git ssb

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var url = require('url')
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var pull = require('pull-stream')
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var once = pull.once
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var cat = require('pull-cat')
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var paramap = require('pull-paramap')
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var multicb = require('multicb')
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var JsDiff = require('diff')
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var GitRepo = require('pull-git-repo')
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var gitPack = require('pull-git-pack')
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var u = require('../util')
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var paginate = require('../paginate')
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var markdown = require('../markdown')
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var forms = require('../forms')
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var ssbRef = require('ssb-ref')
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var zlib = require('zlib')
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var toPull = require('stream-to-pull-stream')
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var h = require('pull-hyperscript')
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var extend = require('xtend')
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module.exports = function (web) {
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  return new RepoRoutes(web)
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}
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function RepoRoutes(web) {
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  this.web = web
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  this.issues = require('./issues')(this, web)
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  this.pulls = require('./pulls')(this, web)
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}
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var R = RepoRoutes.prototype
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function getRepoObjectString(repo, id, mode, cb) {
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  if (!id) return cb(null, '')
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  if (mode == 0160000) return cb(null,
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    'Subproject commit ' + id)
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  repo.getObjectFromAny(id, function (err, obj) {
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    if (err) return cb(err)
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    u.readObjectString(obj, cb)
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  })
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}
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function ul(props) {
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  return function (read) {
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    return cat([
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      pull.once('<ul' + (props ? ' ' + props : '') + '>'),
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      pull(read, pull.map(function (li) { return '<li>' + li + '</li>' })),
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      pull.once('</ul>')
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    ])
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  }
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}
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/* Repo */
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R.serveRepoPage = function (req, repo, path) {
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  var self = this
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  var defaultBranch = 'master'
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  var query = req._u.query
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  if (query.rev != null) {
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    // Allow navigating revs using GET query param.
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    // Replace the branch in the path with the rev query value
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    path[0] = path[0] || 'tree'
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    path[1] = query.rev
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    req._u.pathname = u.encodeLink([repo.id].concat(path))
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    delete req._u.query.rev
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    delete req._u.search
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    return self.web.serveRedirect(req, url.format(req._u))
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  }
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  // get branch
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  return path[1] ?
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    R_serveRepoPage2.call(self, req, repo, path) :
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    u.readNext(function (cb) {
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      // TODO: handle this in pull-git-repo or ssb-git-repo
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      repo.getSymRef('HEAD', true, function (err, ref) {
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        if (err) return cb(err)
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        repo.resolveRef(ref, function (err, rev) {
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          path[1] = rev ? ref : null
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          cb(null, R_serveRepoPage2.call(self, req, repo, path))
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        })
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      })
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    })
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}
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function R_serveRepoPage2(req, repo, path) {
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  var branch = path[1]
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  var filePath = path.slice(2)
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  switch (path[0]) {
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    case undefined:
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    case '':
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      return this.serveRepoTree(req, repo, branch, [])
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    case 'activity':
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      return this.serveRepoActivity(req, repo, branch)
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    case 'commits':
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      return this.serveRepoCommits(req, repo, branch)
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    case 'commit':
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      return this.serveRepoCommit(req, repo, path[1])
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    case 'tag':
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      return this.serveRepoTag(req, repo, branch, filePath)
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    case 'tree':
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      return this.serveRepoTree(req, repo, branch, filePath)
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    case 'blob':
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      return this.serveRepoBlob(req, repo, branch, filePath)
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    case 'raw':
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      return this.serveRepoRaw(req, repo, branch, filePath)
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    case 'digs':
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      return this.serveRepoDigs(req, repo)
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    case 'fork':
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      return this.serveRepoForkPrompt(req, repo)
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    case 'forks':
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      return this.serveRepoForks(req, repo)
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    case 'issues':
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      switch (path[1]) {
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        case 'new':
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          if (filePath.length == 0)
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            return this.issues.serveRepoNewIssue(req, repo)
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          break
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        default:
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          return this.issues.serveRepoIssues(req, repo, false)
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      }
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    case 'pulls':
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      return this.issues.serveRepoIssues(req, repo, true)
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    case 'compare':
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      return this.pulls.serveRepoCompare(req, repo)
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    case 'comparing':
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      return this.pulls.serveRepoComparing(req, repo)
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    case 'info':
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      switch (path[1]) {
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        case 'refs':
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          return this.serveRepoRefs(req, repo)
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        default:
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          return this.web.serve404(req)
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      }
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    case 'objects':
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      switch (path[1]) {
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        case 'info':
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          switch (path[2]) {
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            case 'packs':
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              return this.serveRepoPacksInfo(req, repo)
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            default:
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              return this.web.serve404(req)
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          }
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        case 'pack':
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          return this.serveRepoPack(req, repo, filePath.join('/'))
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        default:
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          var hash = path[1] + path[2]
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          if (hash.length === 40) {
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            return this.serveRepoObject(req, repo, hash)
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          }
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          return this.web.serve404(req)
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      }
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    case 'HEAD':
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      return this.serveRepoHead(req, repo)
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    default:
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      return this.web.serve404(req)
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  }
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}
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R.serveRepoNotFound = function (req, id, err) {
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  return this.web.serveTemplate(req, req._t('error.RepoNotFound'), 404)
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  (pull.values([
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    '<h2>' + req._t('error.RepoNotFound') + '</h2>',
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    '<p>' + req._t('error.RepoNameNotFound') + '</p>',
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    '<pre>' + u.escape(err.stack) + '</pre>'
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  ]))
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}
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R.renderRepoPage = function (req, repo, page, branch, titleTemplate, body) {
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  var self = this
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  var gitUrl = 'ssb://' + repo.id
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  var host = req.headers.host || '127.0.0.1:7718'
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  var path = '/' + encodeURIComponent(repo.id)
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  var httpUrl = 'http://' + encodeURI(host) + path
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  var digsPath = [repo.id, 'digs']
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  var cloneUrls = '<span class="clone-urls">' +
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    '<select class="custom-dropdown clone-url-protocol" ' +
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     'onchange="this.nextSibling.value=this.value;this.nextSibling.select()">' +
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      '<option selected="selected" value="' + gitUrl + '">SSB</option>' +
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      '<option class="http-clone-url" value="' + httpUrl + '">HTTP</option>' +
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    '</select>' +
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    '<input class="clone-url" readonly="readonly" ' +
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      'value="ssb://' + repo.id + '" size="45" ' +
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      'onclick="this.select()"/>' +
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    '<script>' +
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      'var httpOpt = document.querySelector(".http-clone-url")\n' +
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      'if (location.protocol === "https:") httpOpt.text = "HTTPS"\n' +
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      'httpOpt.value = location.origin + "' + path + '"\n' +
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    '</script>' +
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    '</span>'
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  var done = multicb({ pluck: 1, spread: true })
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  self.web.getRepoName(repo.feed, repo.id, done())
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  self.web.about.getName(repo.feed, done())
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  self.web.getVotes(repo.id, done())
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  if (repo.upstream) {
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    self.web.getRepoName(repo.upstream.feed, repo.upstream.id, done())
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    self.web.about.getName(repo.upstream.feed, done())
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  }
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  return u.readNext(function (cb) {
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    done(function (err, repoName, authorName, votes, upstreamName, upstreamAuthorName) {
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      if (err) return cb(null, self.web.serveError(req, err))
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      var upvoted = votes.upvoters[self.web.myId] > 0
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      var upstreamLink = !repo.upstream ? '' :
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        u.link([repo.upstream])
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      var title = titleTemplate ? titleTemplate
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        .replace(/%\{repo\}/g, repoName)
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        .replace(/%\{author\}/g, authorName)
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        : authorName + '/' + repoName
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      var isPublic = self.web.isPublic
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      var isPrivate = !isPublic //TODO use this with u.when(isPrivate, h())
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      cb(null, self.web.serveTemplate(req, title)(cat([
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        h('div', {class: 'repo-title'}, [
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          h('form', {class: 'right-bar', action: '', method: 'post'}, [
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            h('button', 
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              extend({class: 'btn', name: 'action', value: 'vote'},
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                (isPublic ? {disabled: 'disabled'} : {type: 'submit'})
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              ), [
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                h('i', '✌'),
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                h('span', req._t(!isPublic && upvoted ? 'Undig' : 'Dig'))
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              ]
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            ),
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            (isPublic
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              ? once('')
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              : cat([
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                h('input', {type: 'hidden', name: 'value', value: (upvoted ? '0' : '1')}, []),
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                h('input', {type: 'hidden', name: 'id', value: u.escape(repo.id)}, [])
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              ])
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            ),
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            h('strong', u.link(digsPath, votes.upvotes)),
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            (isPublic
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              ? once('')
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              : h('button', {class: 'btn', type: 'submit', name: 'action', value: 'fork-prompt'}, [
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                  h('i', '⑂'),
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                  once(req._t('Fork'))
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                ])
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            ),
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            h('a', {href: u.encodeLink([repo.id, 'forks']), title: req._t('Forks')}, '+')
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          ]),
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          forms.name(req, !isPublic, repo.id, repoName, 'repo-name', null, req._t('repo.Rename'),
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            h('h2', {class: 'bgslash'}, `${u.link([repo.feed], authorName)} / ${u.link([repo.id], repoName)}`)
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          ),
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        ]),
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        (!repo.upstream
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          ? once('')
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          : h('small', {class: 'bgslash'}, req._t('ForkedFrom', {
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              repo: `${u.link([repo.upstream.feed], upstreamAuthorName)} / ${u.link([repo.upstream.id], upstreamName)}`
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            }))
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        ),
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        u.nav([
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          [[repo.id], req._t('Code'), 'code'],
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          [[repo.id, 'activity'], req._t('Activity'), 'activity'],
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          [[repo.id, 'commits', branch||''], req._t('Commits'), 'commits'],
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          [[repo.id, 'issues'], req._t('Issues'), 'issues'],
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          [[repo.id, 'pulls'], req._t('PullRequests'), 'pulls']
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        ], page, cloneUrls),
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        body
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      ])
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      ))
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    })
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  })
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}
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R.serveEmptyRepo = function (req, repo) {
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  if (repo.feed != this.web.myId)
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    return this.renderRepoPage(req, repo, 'code', null, null, pull.once(
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      '<section>' +
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      '<h3>' + req._t('EmptyRepo') + '</h3>' +
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      '</section>'))
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  var gitUrl = 'ssb://' + repo.id
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  return this.renderRepoPage(req, repo, 'code', null, null, pull.once(
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    '<section>' +
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    '<h3>' + req._t('initRepo.GettingStarted') + '</h3>' +
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    '<h4>' + req._t('initRepo.CreateNew') + '</h4><pre>' +
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    'touch ' + req._t('initRepo.README') + '.md\n' +
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    'git init\n' +
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    'git add ' + req._t('initRepo.README') + '.md\n' +
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    'git commit -m "' + req._t('initRepo.InitialCommit') + '"\n' +
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    'git remote add origin ' + gitUrl + '\n' +
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    'git push -u origin master</pre>\n' +
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    '<h4>' + req._t('initRepo.PushExisting') + '</h4>\n' +
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    '<pre>git remote add origin ' + gitUrl + '\n' +
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    'git push -u origin master</pre>' +
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    '</section>'))
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}
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R.serveRepoTree = function (req, repo, rev, path) {
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  var type = repo.isCommitHash(rev) ? 'Tree' : 'Branch'
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  var title = (path.length ? path.join('/') + ' · ' : '') +
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    '%{author}/%{repo}' +
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    (repo.head == 'refs/heads/' + rev ? '' : '@' + rev)
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  return this.renderRepoPage(req, repo, 'code', rev, title, cat([
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    pull.once('<section class="branch-info light-grey"><form action="" method="get">' +
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      '<h3>' + req._t(type) + ': '),
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    this.revMenu(req, repo, rev),
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    pull.once('</h3></form>'),
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    type == 'Branch' && renderRepoLatest(req, repo, rev),
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    pull.once('</section>'),
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    rev ? cat([
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      pull.once('<section class="files">'),
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      renderRepoTree(req, repo, rev, path),
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      pull.once('</section>'),
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      this.renderRepoReadme(req, repo, rev, path)
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    ]) : this.serveEmptyRepo(req, repo)
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  ]))
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}
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/* Repo activity */
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R.serveRepoActivity = function (req, repo, branch) {
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  var self = this
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  var title = req._t('Activity') + ' · %{author}/%{repo}'
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  return self.renderRepoPage(req, repo, 'activity', branch, title, cat([
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    pull.once('<h3>' + req._t('Activity') + '</h3>'),
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    pull(
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      self.web.ssb.links({
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        dest: repo.id,
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        rel: 'repo',
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        values: true,
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        reverse: true
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      }),
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      pull.asyncMap(renderRepoUpdate.bind(self, req, repo, false))
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    ),
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    u.readOnce(function (cb) {
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      var done = multicb({ pluck: 1, spread: true })
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      self.web.about.getName(repo.feed, done())
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      self.web.getMsg(repo.id, done())
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      done(function (err, authorName, msg) {
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        if (err) return cb(err)
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        self.web.renderFeedItem(req, {
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          key: repo.id,
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          value: msg,
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          authorName: authorName
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        }, cb)
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      })
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    })
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  ]))
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}
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function renderRepoUpdate(req, repo, full, msg, cb) {
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  var c = msg.value.content
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  if (c.type != 'git-update') {
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    return ''
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    // return renderFeedItem(msg, cb)
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    // TODO: render post, issue, pull-request
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  }
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  var branches = []
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  var tags = []
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  if (c.refs) for (var name in c.refs) {
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    var m = name.match(/^refs\/(heads|tags)\/(.*)$/) || [,, name]
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    ;(m[1] == 'tags' ? tags : branches)
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      .push({name: m[2], value: c.refs[name]})
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  }
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  var numObjects = c.objects ? Object.keys(c.objects).length : 0
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  var dateStr = new Date(msg.value.timestamp).toLocaleString(req._locale)
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  this.web.about.getName(msg.value.author, function (err, name) {
363
    if (err) return cb(err)
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    cb(null, '<section class="collapse">' +
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      u.link([msg.key], dateStr) + '<br>' +
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      u.link([msg.value.author], name) + '<br>' +
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      branches.map(function (update) {
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        if (!update.value) {
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          return '<s>' + u.escape(update.name) + '</s><br/>'
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        } else {
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          var commitLink = u.link([repo.id, 'commit', update.value])
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          var branchLink = u.link([repo.id, 'tree', update.name])
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          return branchLink + ' &rarr; <tt>' + commitLink + '</tt><br/>'
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        }
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      }).join('') +
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      tags.map(function (update) {
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        return update.value
379
          ? u.link([repo.id, 'tag', update.value], update.name)
380
          : '<s>' + u.escape(update.name) + '</s>'
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      }).join(', ') +
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      '</section>')
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  })
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}
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/* Repo commits */
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R.serveRepoCommits = function (req, repo, branch) {
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  var query = req._u.query
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  var title = req._t('Commits') + ' · %{author}/%{repo}'
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  return this.renderRepoPage(req, repo, 'commits', branch, title, cat([
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    pull.once('<h3>' + req._t('Commits') + '</h3>'),
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    pull(
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      repo.readLog(query.start || branch),
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      pull.take(20),
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      paramap(repo.getCommitParsed.bind(repo), 8),
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      paginate(
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        !query.start ? '' : function (first, cb) {
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          cb(null, '&hellip;')
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        },
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        pull.map(renderCommit.bind(this, req, repo)),
402
        function (commit, cb) {
403
          cb(null, commit.parents && commit.parents[0] ?
404
            '<a href="?start=' + commit.id + '">' +
405
              req._t('Older') + '</a>' : '')
406
        }
407
      )
408
    )
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  ]))
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}
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function renderCommit(req, repo, commit) {
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  var commitPath = [repo.id, 'commit', commit.id]
414
  var treePath = [repo.id, 'tree', commit.id]
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  return '<section class="collapse">' +
416
    '<strong>' + u.link(commitPath, commit.title) + '</strong><br>' +
417
    '<tt>' + commit.id + '</tt> ' +
418
      u.link(treePath, req._t('Tree')) + '<br>' +
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    u.escape(commit.author.name) + ' &middot; ' +
420
    commit.author.date.toLocaleString(req._locale) +
421
    (commit.separateAuthor ? '<br>' + req._t('CommittedOn', {
422
      name: u.escape(commit.committer.name),
423
      date: commit.committer.date.toLocaleString(req._locale)
424
    }) : '') +
425
    '</section>'
426
}
427
428
/* Branch menu */
429
430
R.formatRevOptions = function (currentName) {
431
  return function (name) {
432
    var htmlName = u.escape(name)
433
    return '<option value="' + htmlName + '"' +
434
      (name == currentName ? ' selected="selected"' : '') +
435
      '>' + htmlName + '</option>'
436
  }
437
}
438
439
R.formatRevType = function(req, type) {
440
  return (
441
    type == 'heads' ? req._t('Branches') :
442
    type == 'tags' ? req._t('Tags') :
443
    type)
444
}
445
446
R.revMenu = function (req, repo, currentName) {
447
  var self = this
448
  return u.readOnce(function (cb) {
449
    repo.getRefNames(function (err, refs) {
450
      if (err) return cb(err)
451
      cb(null, '<select class="custom-dropdown" name="rev" onchange="this.form.submit()">' +
452
        Object.keys(refs).map(function (group) {
453
          return '<optgroup ' +
454
            'label="' + self.formatRevType(req, group) + '">' +
455
            refs[group].map(self.formatRevOptions(currentName)).join('') +
456
            '</optgroup>'
457
        }).join('') +
458
        '</select><noscript> ' +
459
        '<input type="submit" value="' + req._t('Go') + '"/></noscript>')
460
    })
461
  })
462
}
463
464
/* Repo tree */
465
466
function renderRepoLatest(req, repo, rev) {
467
  if (!rev) return pull.empty()
468
  return u.readOnce(function (cb) {
469
    repo.getCommitParsed(rev, function (err, commit) {
470
      if (err) return cb(err)
471
      var commitPath = [repo.id, 'commit', commit.id]
472
      var actor = commit.separateAuthor ? 'author' : 'committer'
473
      var actionKey = actor.slice(0,1).toUpperCase() + actor.slice(1) + 'ReleasedCommit'
474
      cb(null,
475
        '<div class="mt1">' +
476
          '<span>' +
477
            req._t(actionKey, {
478
              name: u.escape(commit[actor].name),
479
              commitName: u.link(commitPath, commit.title)
480
            }) +
481
          '</span>' +
482
          '<tt class="float-right">' +
483
            req._t('LatestOn', {
484
              commitId: commit.id.slice(0, 7),
485
              date: commit[actor].date.toLocaleString(req._locale)
486
            }) +
487
          '</tt>' +
488
        '</div>'
489
      )
490
    })
491
  })
492
}
493
494
// breadcrumbs
495
function linkPath(basePath, path) {
496
  path = path.slice()
497
  var last = path.pop()
498
  return path.map(function (dir, i) {
499
    return u.link(basePath.concat(path.slice(0, i+1)), dir)
500
  }).concat(last).join(' / ')
501
}
502
503
function renderRepoTree(req, repo, rev, path) {
504
  var source =  repo.readDir(rev,path)
505
  var pathLinks = path.length === 0 ? '' :
506
    ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
507
508
  var location = once('')
509
  if (path.length !== 0) {
510
    var link = linkPath([repo.id, 'tree'], [rev].concat(path)) 
511
    location = h('div', {class: 'fileLocation'}, `${req._t('Files')}: ${link}`)
512
  }
513
514
  return cat([
515
    location,
516
    h('table', {class: "files w-100"}, u.sourceMap(source, file =>
517
      h('tr', [
518
        h('td', [
519
          h('i', fileIcon(file))
520
        ]),
521
        h('td', u.link(filePath(file), file.name))
522
      ])
523
    ))
524
  ])
525
526
  function fileIcon(file) {
527
    return fileType(file) === 'tree' ? '📁' : '📄'
528
  }
529
530
  function filePath(file) {
531
    var type = fileType(file)
532
    return [repo.id, type, rev].concat(path, file.name)
533
  }
534
535
  function fileType(file) {
536
    if (file.mode === 040000) return 'tree'
537
    else if (file.mode === 0160000) return 'commit'
538
    else return 'blob'
539
  }
540
}
541
542
/* Repo readme */
543
544
R.renderRepoReadme = function (req, repo, branch, path) {
545
  var self = this
546
  return u.readNext(function (cb) {
547
    pull(
548
      repo.readDir(branch, path),
549
      pull.filter(function (file) {
550
        return /readme(\.|$)/i.test(file.name)
551
      }),
552
      pull.take(1),
553
      pull.collect(function (err, files) {
554
        if (err) return cb(null, pull.empty())
555
        var file = files[0]
556
        if (!file)
557
          return cb(null, pull.once(path.length ? '' :
558
            '<p>' + req._t('NoReadme') + '</p>'))
559
        repo.getObjectFromAny(file.id, function (err, obj) {
560
          if (err) return cb(err)
561
          cb(null, cat([
562
            pull.once('<section class="readme">'),
563
            self.web.renderObjectData(obj, file.name, repo, branch, path),
564
            pull.once('</section>')
565
          ]))
566
        })
567
      })
568
    )
569
  })
570
}
571
572
/* Repo commit */
573
574
R.serveRepoCommit = function (req, repo, rev) {
575
  var self = this
576
  return u.readNext(function (cb) {
577
    repo.getCommitParsed(rev, function (err, commit) {
578
      if (err) return cb(err)
579
      var commitPath = [repo.id, 'commit', commit.id]
580
      var treePath = [repo.id, 'tree', commit.id]
581
      var title = u.escape(commit.title) + ' · ' +
582
        '%{author}/%{repo}@' + commit.id.substr(0, 8)
583
      cb(null, self.renderRepoPage(req, repo, null, rev, title, cat([
584
        pull.once(
585
        '<h3>' + u.link(commitPath,
586
          req._t('CommitRev', {rev: rev})) + '</h3>' +
587
        '<section class="collapse">' +
588
        '<div class="right-bar">' +
589
          u.link(treePath, req._t('BrowseFiles')) +
590
        '</div>' +
591
        '<h4>' + u.linkify(u.escape(commit.title)) + '</h4>' +
592
        (commit.body ? u.linkify(u.pre(commit.body)) : '') +
593
        (commit.separateAuthor ? req._t('AuthoredOn', {
594
          name: u.escape(commit.author.name),
595
          date: commit.author.date.toLocaleString(req._locale)
596
        }) + '<br/>' : '') +
597
        req._t('CommittedOn', {
598
          name: u.escape(commit.committer.name),
599
          date: commit.committer.date.toLocaleString(req._locale)
600
        }) + '<br/>' +
601
        commit.parents.map(function (id) {
602
          return req._t('Parent') + ': ' +
603
            u.link([repo.id, 'commit', id], id)
604
        }).join('<br>') +
605
        '</section>' +
606
        '<section><h3>' + req._t('FilesChanged') + '</h3>'),
607
        // TODO: show diff from all parents (merge commits)
608
        self.renderDiffStat(req, [repo, repo], [commit.parents[0], commit.id]),
609
        pull.once('</section>')
610
      ])))
611
    })
612
  })
613
}
614
615
/* Repo tag */
616
617
R.serveRepoTag = function (req, repo, rev, path) {
618
  var self = this
619
  return u.readNext(function (cb) {
620
    repo.getTagParsed(rev, function (err, tag) {
621
      if (err) {
622
        if (/Expected tag, got commit/.test(err.message)) {
623
          req._u.pathname = u.encodeLink([repo.id, 'commit', rev].concat(path))
624
          return cb(null, self.web.serveRedirect(req, url.format(req._u)))
625
        }
626
        return cb(null, self.web.serveError(req, err))
627
      }
628
629
      var title = req._t('TagName', {
630
        tag: u.escape(tag.tag)
631
      }) + ' · %{author}/%{repo}'
632
      var body = (tag.title + '\n\n' +
633
        tag.body.replace(/-----BEGIN PGP SIGNATURE-----\n[^.]*?\n-----END PGP SIGNATURE-----\s*$/, '')).trim()
634
      var date = tag.tagger.date
635
      cb(null, self.renderRepoPage(req, repo, 'tags', tag.object, title,
636
        pull.once(
637
          '<section class="collapse">' +
638
          '<h3>' + u.link([repo.id, 'tag', rev], tag.tag) + '</h3>' +
639
          req._t('TaggedOn', {
640
            name: u.escape(tag.tagger.name),
641
            date: date && date.toLocaleString(req._locale)
642
          }) + '<br/>' +
643
        u.link([repo.id, tag.type, tag.object]) +
644
        u.linkify(u.pre(body)) +
645
        '</section>')))
646
    })
647
  })
648
}
649
650
651
/* Diff stat */
652
653
R.renderDiffStat = function (req, repos, treeIds) {
654
  if (treeIds.length == 0) treeIds = [null]
655
  var id = treeIds[0]
656
  var lastI = treeIds.length - 1
657
  var oldTree = treeIds[0]
658
  var changedFiles = []
659
  var source = GitRepo.diffTrees(repos, treeIds, true)
660
661
  return cat([
662
    h('table', u.sourceMap(source, item => {
663
      var filename = u.escape(item.filename = item.path.join('/'))
664
      var oldId = item.id && item.id[0]
665
      var newId = item.id && item.id[lastI]
666
      var oldMode = item.mode && item.mode[0]
667
      var newMode = item.mode && item.mode[lastI]
668
      var action =
669
        !oldId && newId ? req._t('action.added') :
670
        oldId && !newId ? req._t('action.deleted') :
671
        oldMode != newMode ? req._t('action.changedMode', {
672
          old: oldMode.toString(8),
673
          new: newMode.toString(8)
674
        }) : req._t('changed')
675
      if (item.id)
676
        changedFiles.push(item)
677
      var blobsPath = item.id[1]
678
        ? [repos[1].id, 'blob', treeIds[1]]
679
        : [repos[0].id, 'blob', treeIds[0]]
680
      var rawsPath = item.id[1]
681
        ? [repos[1].id, 'raw', treeIds[1]]
682
        : [repos[0].id, 'raw', treeIds[0]]
683
      item.blobPath = blobsPath.concat(item.path)
684
      item.rawPath = rawsPath.concat(item.path)
685
      var fileHref = item.id ?
686
        '#' + encodeURIComponent(item.path.join('/')) :
687
        u.encodeLink(item.blobPath)
688
689
      return h('tr', [
690
        h('td', [
691
          h('a', {href: fileHref}, filename)
692
        ]),
693
        h('td', action)
694
      ])
695
    })),
696
    pull(
697
      pull.values(changedFiles),
698
      paramap(function (item, cb) {
699
        var extension = u.getExtension(item.filename)
700
        if (extension in u.imgMimes) {
701
          var filename = u.escape(item.filename)
702
          return cb(null,
703
            '<pre><table class="code">' +
704
            '<tr><th id="' + u.escape(item.filename) + '">' +
705
              filename + '</th></tr>' +
706
            '<tr><td><img src="' + u.encodeLink(item.rawPath) + '"' +
707
            ' alt="' + filename + '"/></td></tr>' +
708
            '</table></pre>')
709
        }
710
        var done = multicb({ pluck: 1, spread: true })
711
        var mode0 = item.mode && item.mode[0]
712
        var modeI = item.mode && item.mode[lastI]
713
        var isSubmodule = (modeI == 0160000)
714
        getRepoObjectString(repos[0], item.id[0], mode0, done())
715
        getRepoObjectString(repos[1], item.id[lastI], modeI, done())
716
        done(function (err, strOld, strNew) {
717
          if (err) return cb(err)
718
          cb(null, htmlLineDiff(req, item.filename, item.filename,
719
            strOld, strNew,
720
            u.encodeLink(item.blobPath), !isSubmodule))
721
        })
722
      }, 4)
723
    )
724
  ])
725
}
726
727
function htmlLineDiff(req, filename, anchor, oldStr, newStr, blobHref,
728
    showViewLink) {
729
  return '<pre><table class="code">' +
730
    '<tr><th colspan=3 id="' + u.escape(anchor) + '">' + filename +
731
    (showViewLink === false ? '' :
732
      '<span class="right-bar">' +
733
        '<a href="' + blobHref + '">' + req._t('View') + '</a> ' +
734
      '</span>') +
735
    '</th></tr>' +
736
    (oldStr.length + newStr.length > 200000
737
      ? '<tr><td class="diff-info">' + req._t('diff.TooLarge') + '<br>' +
738
        req._t('diff.OldFileSize', {bytes: oldStr.length}) + '<br>' +
739
        req._t('diff.NewFileSize', {bytes: newStr.length}) + '</td></tr>'
740
      : tableDiff(oldStr, newStr, filename)) +
741
    '</table></pre>'
742
}
743
744
function tableDiff(oldStr, newStr, filename) {
745
  var diff = JsDiff.structuredPatch('', '', oldStr, newStr)
746
  var groups = diff.hunks.map(function (hunk) {
747
    var oldLine = hunk.oldStart
748
    var newLine = hunk.newStart
749
    var header = '<tr class="diff-hunk-header"><td colspan=2></td><td>' +
750
      '@@ -' + oldLine + ',' + hunk.oldLines + ' ' +
751
      '+' + newLine + ',' + hunk.newLines + ' @@' +
752
      '</td></tr>'
753
    return [header].concat(hunk.lines.map(function (line) {
754
      var s = line[0]
755
      if (s == '\\') return
756
      var html = u.highlight(line, u.getExtension(filename))
757
      var trClass = s == '+' ? 'diff-new' : s == '-' ? 'diff-old' : ''
758
      var lineNums = [s == '+' ? '' : oldLine++, s == '-' ? '' : newLine++]
759
      var id = [filename].concat(lineNums).join('-')
760
      return '<tr id="' + u.escape(id) + '" class="' + trClass + '">' +
761
        lineNums.map(function (num) {
762
          return '<td class="code-linenum">' +
763
            (num ? '<a href="#' + encodeURIComponent(id) + '">' +
764
              num + '</a>' : '') + '</td>'
765
        }).join('') +
766
        '<td class="code-text">' + html + '</td></tr>'
767
    }))
768
  })
769
  return [].concat.apply([], groups).join('')
770
}
771
772
/* An unknown message linking to a repo */
773
774
R.serveRepoSomething = function (req, repo, id, msg, path) {
775
  return this.renderRepoPage(req, repo, null, null, null,
776
    pull.once('<section><h3>' + u.link([id]) + '</h3>' +
777
      u.json(msg) + '</section>'))
778
}
779
780
/* Repo update */
781
782
function objsArr(objs) {
783
  return Array.isArray(objs) ? objs :
784
    Object.keys(objs).map(function (sha1) {
785
      var obj = Object.create(objs[sha1])
786
      obj.sha1 = sha1
787
      return obj
788
    })
789
}
790
791
R.serveRepoUpdate = function (req, repo, id, msg, path) {
792
  var self = this
793
  var raw = req._u.query.raw != null
794
  var title = req._t('Update') + ' · %{author}/%{repo}'
795
796
  if (raw)
797
    return self.renderRepoPage(req, repo, 'activity', null, title, pull.once(
798
      '<a href="?" class="raw-link header-align">' +
799
        req._t('Info') + '</a>' +
800
      '<h3>' + req._t('Update') + '</h3>' +
801
      '<section class="collapse">' +
802
        u.json({key: id, value: msg}) + '</section>'))
803
804
  // convert packs to old single-object style
805
  if (msg.content.indexes) {
806
    for (var i = 0; i < msg.content.indexes.length; i++) {
807
      msg.content.packs[i] = {
808
        pack: {link: msg.content.packs[i].link},
809
        idx: msg.content.indexes[i]
810
      }
811
    }
812
  }
813
814
  var commits = cat([
815
    msg.content.objects && pull(
816
      pull.values(msg.content.objects),
817
      pull.filter(function (obj) { return obj.type == 'commit' }),
818
      paramap(function (obj, cb) {
819
        self.web.getBlob(req, obj.link || obj.key, function (err, readObject) {
820
          if (err) return cb(err)
821
          GitRepo.getCommitParsed({read: readObject}, cb)
822
        })
823
      }, 8)
824
    ),
825
    msg.content.packs && pull(
826
      pull.values(msg.content.packs),
827
      paramap(function (pack, cb) {
828
        var done = multicb({ pluck: 1, spread: true })
829
        self.web.getBlob(req, pack.pack.link, done())
830
        self.web.getBlob(req, pack.idx.link, done())
831
        done(function (err, readPack, readIdx) {
832
          if (err) return cb(self.web.renderError(err))
833
          cb(null, gitPack.decodeWithIndex(repo, readPack, readIdx))
834
        })
835
      }, 4),
836
      pull.flatten(),
837
      pull.asyncMap(function (obj, cb) {
838
        if (obj.type == 'commit')
839
          GitRepo.getCommitParsed(obj, cb)
840
        else
841
          pull(obj.read, pull.drain(null, cb))
842
      }),
843
      pull.filter()
844
    )
845
  ])
846
847
  return self.renderRepoPage(req, repo, 'activity', null, title, cat([
848
    pull.once('<a href="?raw" class="raw-link header-align">' +
849
      req._t('Data') + '</a>' +
850
      '<h3>' + req._t('Update') + '</h3>'),
851
    pull(
852
      pull.once({key: id, value: msg}),
853
      pull.asyncMap(renderRepoUpdate.bind(self, req, repo, true))
854
    ),
855
    (msg.content.objects || msg.content.packs) &&
856
      pull.once('<h3>' + req._t('Commits') + '</h3>'),
857
    pull(commits, pull.map(function (commit) {
858
      return renderCommit(req, repo, commit)
859
    }))
860
  ]))
861
}
862
863
/* Blob */
864
865
R.serveRepoBlob = function (req, repo, rev, path) {
866
  var self = this
867
  return u.readNext(function (cb) {
868
    repo.getFile(rev, path, function (err, object) {
869
      if (err) return cb(null, self.web.serveBlobNotFound(req, repo.id, err))
870
      var type = repo.isCommitHash(rev) ? 'Tree' : 'Branch'
871
      var pathLinks = path.length === 0 ? '' :
872
        ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
873
      var rawFilePath = [repo.id, 'raw', rev].concat(path)
874
      var dirPath = path.slice(0, path.length-1)
875
      var filename = path[path.length-1]
876
      var extension = u.getExtension(filename)
877
      var title = (path.length ? path.join('/') + ' · ' : '') +
878
        '%{author}/%{repo}' +
879
        (repo.head == 'refs/heads/' + rev ? '' : '@' + rev)
880
      cb(null, self.renderRepoPage(req, repo, 'code', rev, title, cat([
881
        pull.once('<section><form action="" method="get">' +
882
          '<h3>' + req._t(type) + ': ' + rev + ' '),
883
        self.revMenu(req, repo, rev),
884
        pull.once('</h3></form>'),
885
        type == 'Branch' && renderRepoLatest(req, repo, rev),
886
        pull.once('</section><section class="collapse">' +
887
          '<h3>' + req._t('Files') + pathLinks + '</h3>' +
888
          '<div>' + object.length + ' bytes' +
889
          '<span class="raw-link">' +
890
            u.link(rawFilePath, req._t('Raw')) + '</span>' +
891
          '</div></section>' +
892
          '<section>'),
893
        extension in u.imgMimes
894
        ? pull.once('<img src="' + u.encodeLink(rawFilePath) +
895
          '" alt="' + u.escape(filename) + '" />')
896
        : self.web.renderObjectData(object, filename, repo, rev, dirPath),
897
        pull.once('</section>')
898
      ])))
899
    })
900
  })
901
}
902
903
/* Raw blob */
904
905
R.serveRepoRaw = function (req, repo, branch, path) {
906
  var self = this
907
  return u.readNext(function (cb) {
908
    repo.getFile(branch, path, function (err, object) {
909
      if (err) return cb(null,
910
        self.web.serveBuffer(404, req._t('error.BlobNotFound')))
911
      var extension = u.getExtension(path[path.length-1])
912
      var contentType = u.imgMimes[extension]
913
      cb(null, pull(object.read, self.web.serveRaw(object.length, contentType)))
914
    })
915
  })
916
}
917
918
/* Digs */
919
920
R.serveRepoDigs = function (req, repo) {
921
  var self = this
922
  return u.readNext(function (cb) {
923
  var title = req._t('Digs') + ' · %{author}/%{repo}'
924
    self.web.getVotes(repo.id, function (err, votes) {
925
      cb(null, self.renderRepoPage(req, repo, null, null, title, cat([
926
        pull.once('<section><h3>' + req._t('Digs') + '</h3>' +
927
          '<div>' + req._t('Total') + ': ' + votes.upvotes + '</div>'),
928
        pull(
929
          pull.values(Object.keys(votes.upvoters)),
930
          paramap(function (feedId, cb) {
931
            self.web.about.getName(feedId, function (err, name) {
932
              if (err) return cb(err)
933
              cb(null, u.link([feedId], name))
934
            })
935
          }, 8),
936
          ul()
937
        ),
938
        pull.once('</section>')
939
      ])))
940
    })
941
  })
942
}
943
944
/* Forks */
945
946
R.getForks = function (repo, includeSelf) {
947
  var self = this
948
  return pull(
949
    cat([
950
      includeSelf && pull.once(repo.id),
951
      // get downstream repos
952
      pull(
953
        self.web.ssb.links({
954
          dest: repo.id,
955
          rel: 'upstream'
956
        }),
957
        pull.map('key')
958
      ),
959
      // look for other repos that previously had pull requests to this one
960
      pull(
961
        self.web.ssb.links({
962
          dest: repo.id,
963
          values: true,
964
          rel: 'project'
965
        }),
966
        pull.filter(function (msg) {
967
          var c = msg && msg.value && msg.value.content
968
          return c && c.type == 'pull-request'
969
        }),
970
        pull.map(function (msg) { return msg.value.content.head_repo })
971
      )
972
    ]),
973
    pull.unique(),
974
    paramap(function (key, cb) {
975
      self.web.ssb.get(key, function (err, value) {
976
        if (err) cb(err)
977
        else cb(null, {key: key, value: value})
978
      })
979
    }, 4),
980
    pull.filter(function (msg) {
981
      var c = msg && msg.value && msg.value.content
982
      return c && c.type == 'git-repo'
983
    }),
984
    paramap(function (msg, cb) {
985
      self.web.getRepoFullName(msg.value.author, msg.key,
986
          function (err, repoName, authorName) {
987
        if (err) return cb(err)
988
        cb(null, {
989
          key: msg.key,
990
          value: msg.value,
991
          repoName: repoName,
992
          authorName: authorName
993
        })
994
      })
995
    }, 8)
996
  )
997
}
998
999
R.serveRepoForks = function (req, repo) {
1000
  var hasForks
1001
  var title = req._t('Forks') + ' · %{author}/%{repo}'
1002
  return this.renderRepoPage(req, repo, null, null, title, cat([
1003
    pull.once('<h3>' + req._t('Forks') + '</h3>'),
1004
    pull(
1005
      this.getForks(repo),
1006
      pull.map(function (msg) {
1007
        hasForks = true
1008
        return '<section class="collapse">' +
1009
          u.link([msg.value.author], msg.authorName) + ' / ' +
1010
          u.link([msg.key], msg.repoName) +
1011
          '<span class="right-bar">' +
1012
          u.timestamp(msg.value.timestamp, req) +
1013
          '</span></section>'
1014
      })
1015
    ),
1016
    u.readOnce(function (cb) {
1017
      cb(null, hasForks ? '' : req._t('NoForks'))
1018
    })
1019
  ]))
1020
}
1021
1022
R.serveRepoForkPrompt = function (req, repo) {
1023
  var title = req._t('Fork') + ' · %{author}/%{repo}'
1024
  return this.renderRepoPage(req, repo, null, null, title, pull.once(
1025
    '<form action="" method="post" onreset="history.back()">' +
1026
    '<h3>' + req._t('ForkRepoPrompt') + '</h3>' +
1027
    '<p>' + u.hiddenInputs({ id: repo.id }) +
1028
    '<button class="btn open" type="submit" name="action" value="fork">' +
1029
      req._t('Fork') +
1030
    '</button>' +
1031
    ' <button class="btn" type="reset">' +
1032
      req._t('Cancel') + '</button>' +
1033
    '</p></form>'
1034
  ))
1035
}
1036
1037
R.serveIssueOrPullRequest = function (req, repo, issue, path, id) {
1038
  return issue.msg.value.content.type == 'pull-request'
1039
    ? this.pulls.serveRepoPullReq(req, repo, issue, path, id)
1040
    : this.issues.serveRepoIssue(req, repo, issue, path, id)
1041
}
1042
1043
function getRepoLastMod(repo, cb) {
1044
  repo.getState(function (err, state) {
1045
    if (err) return cb(err)
1046
    var lastMod = new Date(Math.max.apply(Math, state.refs.map(function (ref) {
1047
      return ref.link.value.timestamp
1048
    }))) || new Date()
1049
    cb(null, lastMod)
1050
  })
1051
}
1052
1053
R.serveRepoRefs = function (req, repo) {
1054
  var self = this
1055
  return u.readNext(function (cb) {
1056
    getRepoLastMod(repo, function (err, lastMod) {
1057
      if (err) return cb(null, self.web.serveError(req, err, 500))
1058
      if (u.ifModifiedSince(req, lastMod)) {
1059
        return cb(null, pull.once([304]))
1060
      }
1061
      repo.getState(function (err, state) {
1062
        if (err) return cb(null, self.web.serveError(req, err, 500))
1063
        var buf = state.refs.sort(function (a, b) {
1064
          return a.name > b.name ? 1 : a.name < b.name ? -1 : 0
1065
        }).map(function (ref) {
1066
          return ref.hash + '\t' + ref.name + '\n'
1067
        }).join('')
1068
        cb(null, pull.values([[200, {
1069
          'Content-Type': 'text/plain; charset=utf-8',
1070
          'Content-Length': Buffer.byteLength(buf),
1071
          'Last-Modified': lastMod.toGMTString()
1072
        }], buf]))
1073
      })
1074
    })
1075
  })
1076
}
1077
1078
R.serveRepoObject = function (req, repo, sha1) {
1079
  var self = this
1080
  if (!/[0-9a-f]{20}/.test(sha1)) return pull.once([401])
1081
  return u.readNext(function (cb) {
1082
    repo.getObjectFromAny(sha1, function (err, obj) {
1083
      if (err) return cb(null, pull.once([404]))
1084
      cb(null, cat([
1085
        pull.once([200, {
1086
          'Content-Type': 'application/x-git-loose-object',
1087
          'Cache-Control': 'max-age=31536000'
1088
        }]),
1089
        pull(
1090
          cat([
1091
            pull.values([obj.type, ' ', obj.length.toString(10), '\0']),
1092
            obj.read
1093
          ]),
1094
          toPull(zlib.createDeflate())
1095
        )
1096
      ]))
1097
    })
1098
  })
1099
}
1100
1101
R.serveRepoHead = function (req, repo) {
1102
  var self = this
1103
  return u.readNext(function (cb) {
1104
    repo.getHead(function (err, name) {
1105
      if (err) return cb(null, pull.once([500]))
1106
      return cb(null, self.web.serveBuffer(200, 'ref: ' + name))
1107
    })
1108
  })
1109
}
1110
1111
R.serveRepoPacksInfo = function (req, repo) {
1112
  var self = this
1113
  return u.readNext(function (cb) {
1114
    getRepoLastMod(repo, function (err, lastMod) {
1115
      if (err) return cb(null, self.web.serveError(req, err, 500))
1116
      if (u.ifModifiedSince(req, lastMod)) {
1117
        return cb(null, pull.once([304]))
1118
      }
1119
      cb(null, cat([
1120
        pull.once([200, {
1121
          'Content-Type': 'text/plain; charset=utf-8',
1122
          'Last-Modified': lastMod.toGMTString()
1123
        }]),
1124
        pull(
1125
          repo.packs(),
1126
          pull.map(function (pack) {
1127
            var sha1 = pack.sha1
1128
            if (!sha1) {
1129
              // make up a sha1 and hope git doesn't notice
1130
              var packId = new Buffer(pack.packId.substr(1, 44), 'base64')
1131
              sha1 = packId.slice(0, 20).toString('hex')
1132
            }
1133
            return 'P pack-' + sha1 + '.pack\n'
1134
          })
1135
        )
1136
      ]))
1137
    })
1138
  })
1139
}
1140
1141
R.serveRepoPack = function (req, repo, name) {
1142
  var m = name.match(/^pack-(.*)\.(pack|idx)$/)
1143
  if (!m) return pull.once([400])
1144
  var hex;
1145
  try {
1146
    hex = new Buffer(m[1], 'hex')
1147
  } catch(e) {
1148
    return pull.once([400])
1149
  }
1150
1151
  var self = this
1152
  return u.readNext(function (cb) {
1153
    pull(
1154
      repo.packs(),
1155
      pull.filter(function (pack) {
1156
        var sha1 = pack.sha1
1157
          ? new Buffer(pack.sha1, 'hex')
1158
          : new Buffer(pack.packId.substr(1, 44), 'base64').slice(0, 20)
1159
        return sha1.equals(hex)
1160
      }),
1161
      pull.take(1),
1162
      pull.collect(function (err, packs) {
1163
        if (err) return console.error(err), cb(null, pull.once([500]))
1164
        if (packs.length < 1) return cb(null, pull.once([404]))
1165
          var pack = packs[0]
1166
1167
        if (m[2] === 'pack') {
1168
          repo.getPackfile(pack.packId, function (err, read) {
1169
            if (err) return cb(err)
1170
            cb(null, pull(read,
1171
              self.web.serveRaw(null, 'application/x-git-packed-objects')
1172
            ))
1173
          })
1174
        }
1175
1176
        if (m[2] === 'idx') {
1177
          repo.getPackIndex(pack.idxId, function (err, read) {
1178
            if (err) return cb(err)
1179
            cb(null, pull(read,
1180
              self.web.serveRaw(null, 'application/x-git-packed-objects-toc')
1181
            ))
1182
          })
1183
        }
1184
      })
1185
    )
1186
  })
1187
}
1188