git ssb

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var url = require('url')
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var pull = require('pull-stream')
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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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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 table(props) {
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  return function (read) {
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    return cat([
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      pull.once('<table' + (props ? ' ' + props : '') + '>'),
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      pull(
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        read,
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        pull.map(function (row) {
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          return row ? '<tr>' + row.map(function (cell) {
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            return '<td>' + cell + '</td>'
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          }).join('') + '</tr>' : ''
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        })
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      ),
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      pull.once('</table>')
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    ])
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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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    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 gitLink = '<input class="clone-url" readonly="readonly" ' +
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    'value="' + gitUrl + '" size="45" ' +
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    'onclick="this.select()"/>'
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  var digsPath = [repo.id, 'digs']
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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,
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        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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      cb(null, self.web.serveTemplate(req, title)(cat([
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        pull.once(
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          '<div class="repo-title">' +
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          '<form class="right-bar" action="" method="post">' +
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            '<button class="btn" name="action" value="vote" ' +
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            (isPublic ? 'disabled="disabled"' : ' type="submit"') + '>' +
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              '<i>✌</i> ' + req._t(!isPublic && upvoted ? 'Undig' : 'Dig') +
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              '</button>' +
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            (isPublic ? '' : '<input type="hidden" name="value" value="' +
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                (upvoted ? '0' : '1') + '">' +
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              '<input type="hidden" name="id" value="' +
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                u.escape(repo.id) + '">') + ' ' +
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            '<strong>' + u.link(digsPath, votes.upvotes) + '</strong> ' +
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            (isPublic ? '' : '<button class="btn" type="submit" ' +
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                ' name="action" value="fork-prompt">' +
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              '<i>⑂</i> ' + req._t('Fork') +
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              '</button>') + ' ' +
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            u.link([repo.id, 'forks'], '+', false, ' title="' +
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              req._t('Forks') + '"') +
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          '</form>' +
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          forms.name(req, !isPublic, repo.id, repoName, 'repo-name',
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            null, req._t('repo.Rename'),
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            '<h2 class="bgslash">' + u.link([repo.feed], authorName) + ' / ' +
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              u.link([repo.id], repoName) + '</h2>') +
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          '</div>' +
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          (repo.upstream ? '<small class="bgslash">' + req._t('ForkedFrom', {
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            repo: u.link([repo.upstream.feed], upstreamAuthorName) + '/' +
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              u.link([repo.upstream.id], upstreamName)
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          }) + '</small>' : '') +
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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, gitLink)),
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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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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><form action="" method="get">' +
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      '<h3>' + req._t(type) + ': ' + rev + ' '),
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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>'),
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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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        source: repo.feed,
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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.map(renderRepoUpdate.bind(self, req, repo))
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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, msg, full) {
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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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  return '<section class="collapse">' +
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    u.link([msg.key], dateStr) + '<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
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        ? u.link([repo.id, 'tag', update.value], update.name)
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        : '<s>' + u.escape(update.name) + '</s>'
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    }).join(', ') +
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    '</section>'
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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)),
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        function (commit, cb) {
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          cb(null, commit.parents && commit.parents[0] ?
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            '<a href="?start=' + commit.id + '">' +
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              req._t('Older') + '</a>' : '')
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        }
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      )
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    )
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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]
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  var treePath = [repo.id, 'tree', commit.id]
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  return '<section class="collapse">' +
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    '<strong>' + u.link(commitPath, commit.title) + '</strong><br>' +
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    '<tt>' + commit.id + '</tt> ' +
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      u.link(treePath, req._t('Tree')) + '<br>' +
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    u.escape(commit.author.name) + ' &middot; ' +
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    commit.author.date.toLocaleString(req._locale) +
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    (commit.separateAuthor ? '<br>' + req._t('CommittedOn', {
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      name: u.escape(commit.committer.name),
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      date: commit.committer.date.toLocaleString(req._locale)
378
    }) : '') +
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    '</section>'
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}
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/* Branch menu */
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R.formatRevOptions = function (currentName) {
385
  return function (name) {
386
    var htmlName = u.escape(name)
387
    return '<option value="' + htmlName + '"' +
388
      (name == currentName ? ' selected="selected"' : '') +
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      '>' + htmlName + '</option>'
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  }
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}
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R.formatRevType = function(req, type) {
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  return (
395
    type == 'heads' ? req._t('Branches') :
396
    type == 'tags' ? req._t('Tags') :
397
    type)
398
}
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R.revMenu = function (req, repo, currentName) {
401
  var self = this
402
  return u.readOnce(function (cb) {
403
    repo.getRefNames(function (err, refs) {
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      if (err) return cb(err)
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      cb(null, '<select name="rev" onchange="this.form.submit()">' +
406
        Object.keys(refs).map(function (group) {
407
          return '<optgroup ' +
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            'label="' + self.formatRevType(req, group) + '">' +
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            refs[group].map(self.formatRevOptions(currentName)).join('') +
410
            '</optgroup>'
411
        }).join('') +
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        '</select><noscript> ' +
413
        '<input type="submit" value="' + req._t('Go') + '"/></noscript>')
414
    })
415
  })
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}
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/* Repo tree */
419
420
function renderRepoLatest(req, repo, rev) {
421
  if (!rev) return pull.empty()
422
  return u.readOnce(function (cb) {
423
    repo.getCommitParsed(rev, function (err, commit) {
424
      if (err) return cb(err)
425
      var commitPath = [repo.id, 'commit', commit.id]
426
      cb(null,
427
        req._t('Latest') + ': ' +
428
        '<strong>' + u.link(commitPath, commit.title) + '</strong><br/>' +
429
        '<tt>' + commit.id + '</tt><br/> ' +
430
        req._t('CommittedOn', {
431
          name: u.escape(commit.committer.name),
432
          date: commit.committer.date.toLocaleString(req._locale)
433
        }) +
434
        (commit.separateAuthor ? '<br/>' + req._t('AuthoredOn', {
435
          name: u.escape(commit.author.name),
436
          date: commit.author.date.toLocaleString(req._locale)
437
        }) : ''))
438
    })
439
  })
440
}
441
442
// breadcrumbs
443
function linkPath(basePath, path) {
444
  path = path.slice()
445
  var last = path.pop()
446
  return path.map(function (dir, i) {
447
    return u.link(basePath.concat(path.slice(0, i+1)), dir)
448
  }).concat(last).join(' / ')
449
}
450
451
function renderRepoTree(req, repo, rev, path) {
452
  var pathLinks = path.length === 0 ? '' :
453
    ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
454
  return cat([
455
    pull.once('<h3>' + req._t('Files') + pathLinks + '</h3>'),
456
    pull(
457
      repo.readDir(rev, path),
458
      pull.map(function (file) {
459
        var type = (file.mode === 040000) ? 'tree' :
460
          (file.mode === 0160000) ? 'commit' : 'blob'
461
        if (type == 'commit')
462
          return [
463
            '<span title="' + req._t('gitCommitLink') + '">🖈</span>',
464
            '<span title="' + u.escape(file.id) + '">' +
465
              u.escape(file.name) + '</span>']
466
        var filePath = [repo.id, type, rev].concat(path, file.name)
467
        return ['<i>' + (type == 'tree' ? '📁' : '📄') + '</i>',
468
          u.link(filePath, file.name)]
469
      }),
470
      table('class="files"')
471
    )
472
  ])
473
}
474
475
/* Repo readme */
476
477
R.renderRepoReadme = function (req, repo, branch, path) {
478
  var self = this
479
  return u.readNext(function (cb) {
480
    pull(
481
      repo.readDir(branch, path),
482
      pull.filter(function (file) {
483
        return /readme(\.|$)/i.test(file.name)
484
      }),
485
      pull.take(1),
486
      pull.collect(function (err, files) {
487
        if (err) return cb(null, pull.empty())
488
        var file = files[0]
489
        if (!file)
490
          return cb(null, pull.once(path.length ? '' :
491
            '<p>' + req._t('NoReadme') + '</p>'))
492
        repo.getObjectFromAny(file.id, function (err, obj) {
493
          if (err) return cb(err)
494
          cb(null, cat([
495
            pull.once('<section><h4><a name="readme">' +
496
              u.escape(file.name) + '</a></h4><hr/>'),
497
            self.web.renderObjectData(obj, file.name, repo, branch, path),
498
            pull.once('</section>')
499
          ]))
500
        })
501
      })
502
    )
503
  })
504
}
505
506
/* Repo commit */
507
508
R.serveRepoCommit = function (req, repo, rev) {
509
  var self = this
510
  return u.readNext(function (cb) {
511
    repo.getCommitParsed(rev, function (err, commit) {
512
      if (err) return cb(err)
513
      var commitPath = [repo.id, 'commit', commit.id]
514
      var treePath = [repo.id, 'tree', commit.id]
515
      var title = u.escape(commit.title) + ' · ' +
516
        '%{author}/%{repo}@' + commit.id.substr(0, 8)
517
      cb(null, self.renderRepoPage(req, repo, null, rev, title, cat([
518
        pull.once(
519
        '<h3>' + u.link(commitPath,
520
          req._t('CommitRev', {rev: rev})) + '</h3>' +
521
        '<section class="collapse">' +
522
        '<div class="right-bar">' +
523
          u.link(treePath, req._t('BrowseFiles')) +
524
        '</div>' +
525
        '<h4>' + u.linkify(u.escape(commit.title)) + '</h4>' +
526
        (commit.body ? u.linkify(u.pre(commit.body)) : '') +
527
        (commit.separateAuthor ? req._t('AuthoredOn', {
528
          name: u.escape(commit.author.name),
529
          date: commit.author.date.toLocaleString(req._locale)
530
        }) + '<br/>' : '') +
531
        req._t('CommittedOn', {
532
          name: u.escape(commit.committer.name),
533
          date: commit.committer.date.toLocaleString(req._locale)
534
        }) + '<br/>' +
535
        commit.parents.map(function (id) {
536
          return req._t('Parent') + ': ' +
537
            u.link([repo.id, 'commit', id], id)
538
        }).join('<br>') +
539
        '</section>' +
540
        '<section><h3>' + req._t('FilesChanged') + '</h3>'),
541
        // TODO: show diff from all parents (merge commits)
542
        self.renderDiffStat(req, [repo, repo], [commit.parents[0], commit.id]),
543
        pull.once('</section>')
544
      ])))
545
    })
546
  })
547
}
548
549
/* Repo tag */
550
551
R.serveRepoTag = function (req, repo, rev, path) {
552
  var self = this
553
  return u.readNext(function (cb) {
554
    repo.getTagParsed(rev, function (err, tag) {
555
      if (err) {
556
        if (/Expected tag, got commit/.test(err.message)) {
557
          req._u.pathname = u.encodeLink([repo.id, 'commit', rev].concat(path))
558
          return cb(null, self.web.serveRedirect(req, url.format(req._u)))
559
        }
560
        return cb(null, self.web.serveError(req, err))
561
      }
562
563
      var title = req._t('TagName', {
564
        tag: u.escape(tag.tag)
565
      }) + ' · %{author}/%{repo}'
566
      var body = (tag.title + '\n\n' +
567
        tag.body.replace(/-----BEGIN PGP SIGNATURE-----\n[^.]*?\n-----END PGP SIGNATURE-----\s*$/, '')).trim()
568
      var date = tag.tagger.date
569
      cb(null, self.renderRepoPage(req, repo, 'tags', tag.object, title,
570
        pull.once(
571
          '<section class="collapse">' +
572
          '<h3>' + u.link([repo.id, 'tag', rev], tag.tag) + '</h3>' +
573
          req._t('TaggedOn', {
574
            name: u.escape(tag.tagger.name),
575
            date: date && date.toLocaleString(req._locale)
576
          }) + '<br/>' +
577
        u.link([repo.id, tag.type, tag.object]) +
578
        u.linkify(u.pre(body)) +
579
        '</section>')))
580
    })
581
  })
582
}
583
584
585
/* Diff stat */
586
587
R.renderDiffStat = function (req, repos, treeIds) {
588
  if (treeIds.length == 0) treeIds = [null]
589
  var id = treeIds[0]
590
  var lastI = treeIds.length - 1
591
  var oldTree = treeIds[0]
592
  var changedFiles = []
593
  return cat([
594
    pull(
595
      GitRepo.diffTrees(repos, treeIds, true),
596
      pull.map(function (item) {
597
        var filename = u.escape(item.filename = item.path.join('/'))
598
        var oldId = item.id && item.id[0]
599
        var newId = item.id && item.id[lastI]
600
        var oldMode = item.mode && item.mode[0]
601
        var newMode = item.mode && item.mode[lastI]
602
        var action =
603
          !oldId && newId ? req._t('action.added') :
604
          oldId && !newId ? req._t('action.deleted') :
605
          oldMode != newMode ? req._t('action.changedMode', {
606
            old: oldMode.toString(8),
607
            new: newMode.toString(8)
608
          }) : req._t('changed')
609
        if (item.id)
610
          changedFiles.push(item)
611
        var blobsPath = item.id[1]
612
          ? [repos[1].id, 'blob', treeIds[1]]
613
          : [repos[0].id, 'blob', treeIds[0]]
614
        var rawsPath = item.id[1]
615
          ? [repos[1].id, 'raw', treeIds[1]]
616
          : [repos[0].id, 'raw', treeIds[0]]
617
        item.blobPath = blobsPath.concat(item.path)
618
        item.rawPath = rawsPath.concat(item.path)
619
        var fileHref = item.id ?
620
          '#' + encodeURIComponent(item.path.join('/')) :
621
          u.encodeLink(item.blobPath)
622
        return ['<a href="' + fileHref + '">' + filename + '</a>', action]
623
      }),
624
      table()
625
    ),
626
    pull(
627
      pull.values(changedFiles),
628
      paramap(function (item, cb) {
629
        var extension = u.getExtension(item.filename)
630
        if (extension in u.imgMimes) {
631
          var filename = u.escape(item.filename)
632
          return cb(null,
633
            '<pre><table class="code">' +
634
            '<tr><th id="' + u.escape(item.filename) + '">' +
635
              filename + '</th></tr>' +
636
            '<tr><td><img src="' + u.encodeLink(item.rawPath) + '"' +
637
            ' alt="' + filename + '"/></td></tr>' +
638
            '</table></pre>')
639
        }
640
        var done = multicb({ pluck: 1, spread: true })
641
        var mode0 = item.mode && item.mode[0]
642
        var modeI = item.mode && item.mode[lastI]
643
        var isSubmodule = (modeI == 0160000)
644
        getRepoObjectString(repos[0], item.id[0], mode0, done())
645
        getRepoObjectString(repos[1], item.id[lastI], modeI, done())
646
        done(function (err, strOld, strNew) {
647
          if (err) return cb(err)
648
          cb(null, htmlLineDiff(req, item.filename, item.filename,
649
            strOld, strNew,
650
            u.encodeLink(item.blobPath), !isSubmodule))
651
        })
652
      }, 4)
653
    )
654
  ])
655
}
656
657
function htmlLineDiff(req, filename, anchor, oldStr, newStr, blobHref,
658
    showViewLink) {
659
  return '<pre><table class="code">' +
660
    '<tr><th colspan=3 id="' + u.escape(anchor) + '">' + filename +
661
    (showViewLink === false ? '' :
662
      '<span class="right-bar">' +
663
        '<a href="' + blobHref + '">' + req._t('View') + '</a> ' +
664
      '</span>') +
665
    '</th></tr>' +
666
    (oldStr.length + newStr.length > 200000
667
      ? '<tr><td class="diff-info">' + req._t('diff.TooLarge') + '<br>' +
668
        req._t('diff.OldFileSize', {bytes: oldStr.length}) + '<br>' +
669
        req._t('diff.NewFileSize', {bytes: newStr.length}) + '</td></tr>'
670
      : tableDiff(oldStr, newStr, filename)) +
671
    '</table></pre>'
672
}
673
674
function tableDiff(oldStr, newStr, filename) {
675
  var diff = JsDiff.structuredPatch('', '', oldStr, newStr)
676
  var groups = diff.hunks.map(function (hunk) {
677
    var oldLine = hunk.oldStart
678
    var newLine = hunk.newStart
679
    var header = '<tr class="diff-hunk-header"><td colspan=2></td><td>' +
680
      '@@ -' + oldLine + ',' + hunk.oldLines + ' ' +
681
      '+' + newLine + ',' + hunk.newLines + ' @@' +
682
      '</td></tr>'
683
    return [header].concat(hunk.lines.map(function (line) {
684
      var s = line[0]
685
      if (s == '\\') return
686
      var html = u.highlight(line, u.getExtension(filename))
687
      var trClass = s == '+' ? 'diff-new' : s == '-' ? 'diff-old' : ''
688
      var lineNums = [s == '+' ? '' : oldLine++, s == '-' ? '' : newLine++]
689
      var id = [filename].concat(lineNums).join('-')
690
      return '<tr id="' + u.escape(id) + '" class="' + trClass + '">' +
691
        lineNums.map(function (num) {
692
          return '<td class="code-linenum">' +
693
            (num ? '<a href="#' + encodeURIComponent(id) + '">' +
694
              num + '</a>' : '') + '</td>'
695
        }).join('') +
696
        '<td class="code-text">' + html + '</td></tr>'
697
    }))
698
  })
699
  return [].concat.apply([], groups).join('')
700
}
701
702
/* An unknown message linking to a repo */
703
704
R.serveRepoSomething = function (req, repo, id, msg, path) {
705
  return this.renderRepoPage(req, repo, null, null, null,
706
    pull.once('<section><h3>' + u.link([id]) + '</h3>' +
707
      u.json(msg) + '</section>'))
708
}
709
710
/* Repo update */
711
712
function objsArr(objs) {
713
  return Array.isArray(objs) ? objs :
714
    Object.keys(objs).map(function (sha1) {
715
      var obj = Object.create(objs[sha1])
716
      obj.sha1 = sha1
717
      return obj
718
    })
719
}
720
721
R.serveRepoUpdate = function (req, repo, id, msg, path) {
722
  var self = this
723
  var raw = req._u.query.raw != null
724
  var title = req._t('Update') + ' · %{author}/%{repo}'
725
726
  if (raw)
727
    return self.renderRepoPage(req, repo, 'activity', null, title, pull.once(
728
      '<a href="?" class="raw-link header-align">' +
729
        req._t('Info') + '</a>' +
730
      '<h3>' + req._t('Update') + '</h3>' +
731
      '<section class="collapse">' +
732
        u.json({key: id, value: msg}) + '</section>'))
733
734
  // convert packs to old single-object style
735
  if (msg.content.indexes) {
736
    for (var i = 0; i < msg.content.indexes.length; i++) {
737
      msg.content.packs[i] = {
738
        pack: {link: msg.content.packs[i].link},
739
        idx: msg.content.indexes[i]
740
      }
741
    }
742
  }
743
744
  var commits = cat([
745
    msg.content.objects && pull(
746
      pull.values(msg.content.objects),
747
      pull.filter(function (obj) { return obj.type == 'commit' }),
748
      paramap(function (obj, cb) {
749
        self.web.getBlob(req, obj.link || obj.key, function (err, readObject) {
750
          if (err) return cb(err)
751
          GitRepo.getCommitParsed({read: readObject}, cb)
752
        })
753
      }, 8)
754
    ),
755
    msg.content.packs && pull(
756
      pull.values(msg.content.packs),
757
      paramap(function (pack, cb) {
758
        var done = multicb({ pluck: 1, spread: true })
759
        self.web.getBlob(req, pack.pack.link, done())
760
        self.web.getBlob(req, pack.idx.link, done())
761
        done(function (err, readPack, readIdx) {
762
          if (err) return cb(self.web.renderError(err))
763
          cb(null, gitPack.decodeWithIndex(repo, readPack, readIdx))
764
        })
765
      }, 4),
766
      pull.flatten(),
767
      pull.asyncMap(function (obj, cb) {
768
        if (obj.type == 'commit')
769
          GitRepo.getCommitParsed(obj, cb)
770
        else
771
          pull(obj.read, pull.drain(null, cb))
772
      }),
773
      pull.filter()
774
    )
775
  ])
776
777
  return self.renderRepoPage(req, repo, 'activity', null, title, cat([
778
    pull.once('<a href="?raw" class="raw-link header-align">' +
779
      req._t('Data') + '</a>' +
780
      '<h3>' + req._t('Update') + '</h3>' +
781
      renderRepoUpdate(req, repo, {key: id, value: msg}, true)),
782
    (msg.content.objects || msg.content.packs) &&
783
      pull.once('<h3>' + req._t('Commits') + '</h3>'),
784
    pull(commits, pull.map(function (commit) {
785
      return renderCommit(req, repo, commit)
786
    }))
787
  ]))
788
}
789
790
/* Blob */
791
792
R.serveRepoBlob = function (req, repo, rev, path) {
793
  var self = this
794
  return u.readNext(function (cb) {
795
    repo.getFile(rev, path, function (err, object) {
796
      if (err) return cb(null, self.web.serveBlobNotFound(req, repo.id, err))
797
      var type = repo.isCommitHash(rev) ? 'Tree' : 'Branch'
798
      var pathLinks = path.length === 0 ? '' :
799
        ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
800
      var rawFilePath = [repo.id, 'raw', rev].concat(path)
801
      var dirPath = path.slice(0, path.length-1)
802
      var filename = path[path.length-1]
803
      var extension = u.getExtension(filename)
804
      var title = (path.length ? path.join('/') + ' · ' : '') +
805
        '%{author}/%{repo}' +
806
        (repo.head == 'refs/heads/' + rev ? '' : '@' + rev)
807
      cb(null, self.renderRepoPage(req, repo, 'code', rev, title, cat([
808
        pull.once('<section><form action="" method="get">' +
809
          '<h3>' + req._t(type) + ': ' + rev + ' '),
810
        self.revMenu(req, repo, rev),
811
        pull.once('</h3></form>'),
812
        type == 'Branch' && renderRepoLatest(req, repo, rev),
813
        pull.once('</section><section class="collapse">' +
814
          '<h3>' + req._t('Files') + pathLinks + '</h3>' +
815
          '<div>' + object.length + ' bytes' +
816
          '<span class="raw-link">' +
817
            u.link(rawFilePath, req._t('Raw')) + '</span>' +
818
          '</div></section>' +
819
          '<section>'),
820
        extension in u.imgMimes
821
        ? pull.once('<img src="' + u.encodeLink(rawFilePath) +
822
          '" alt="' + u.escape(filename) + '" />')
823
        : self.web.renderObjectData(object, filename, repo, rev, dirPath),
824
        pull.once('</section>')
825
      ])))
826
    })
827
  })
828
}
829
830
/* Raw blob */
831
832
R.serveRepoRaw = function (req, repo, branch, path) {
833
  var self = this
834
  return u.readNext(function (cb) {
835
    repo.getFile(branch, path, function (err, object) {
836
      if (err) return cb(null,
837
        self.web.serveBuffer(404, req._t('error.BlobNotFound')))
838
      var extension = u.getExtension(path[path.length-1])
839
      var contentType = u.imgMimes[extension]
840
      cb(null, pull(object.read, self.web.serveRaw(object.length, contentType)))
841
    })
842
  })
843
}
844
845
/* Digs */
846
847
R.serveRepoDigs = function (req, repo) {
848
  var self = this
849
  return u.readNext(function (cb) {
850
  var title = req._t('Digs') + ' · %{author}/%{repo}'
851
    self.web.getVotes(repo.id, function (err, votes) {
852
      cb(null, self.renderRepoPage(req, repo, null, null, title, cat([
853
        pull.once('<section><h3>' + req._t('Digs') + '</h3>' +
854
          '<div>' + req._t('Total') + ': ' + votes.upvotes + '</div>'),
855
        pull(
856
          pull.values(Object.keys(votes.upvoters)),
857
          paramap(function (feedId, cb) {
858
            self.web.about.getName(feedId, function (err, name) {
859
              if (err) return cb(err)
860
              cb(null, u.link([feedId], name))
861
            })
862
          }, 8),
863
          ul()
864
        ),
865
        pull.once('</section>')
866
      ])))
867
    })
868
  })
869
}
870
871
/* Forks */
872
873
R.getForks = function (repo, includeSelf) {
874
  var self = this
875
  return pull(
876
    cat([
877
      includeSelf && pull.once(repo.id),
878
      // get downstream repos
879
      pull(
880
        self.web.ssb.links({
881
          dest: repo.id,
882
          rel: 'upstream'
883
        }),
884
        pull.map('key')
885
      ),
886
      // look for other repos that previously had pull requests to this one
887
      pull(
888
        self.web.ssb.links({
889
          dest: repo.id,
890
          values: true,
891
          rel: 'project'
892
        }),
893
        pull.filter(function (msg) {
894
          var c = msg && msg.value && msg.value.content
895
          return c && c.type == 'pull-request'
896
        }),
897
        pull.map(function (msg) { return msg.value.content.head_repo })
898
      )
899
    ]),
900
    pull.unique(),
901
    paramap(function (key, cb) {
902
      self.web.ssb.get(key, function (err, value) {
903
        if (err) cb(err)
904
        else cb(null, {key: key, value: value})
905
      })
906
    }, 4),
907
    pull.filter(function (msg) {
908
      var c = msg && msg.value && msg.value.content
909
      return c && c.type == 'git-repo'
910
    }),
911
    paramap(function (msg, cb) {
912
      self.web.getRepoFullName(msg.value.author, msg.key,
913
          function (err, repoName, authorName) {
914
        if (err) return cb(err)
915
        cb(null, {
916
          key: msg.key,
917
          value: msg.value,
918
          repoName: repoName,
919
          authorName: authorName
920
        })
921
      })
922
    }, 8)
923
  )
924
}
925
926
R.serveRepoForks = function (req, repo) {
927
  var hasForks
928
  var title = req._t('Forks') + ' · %{author}/%{repo}'
929
  return this.renderRepoPage(req, repo, null, null, title, cat([
930
    pull.once('<h3>' + req._t('Forks') + '</h3>'),
931
    pull(
932
      this.getForks(repo),
933
      pull.map(function (msg) {
934
        hasForks = true
935
        return '<section class="collapse">' +
936
          u.link([msg.value.author], msg.authorName) + ' / ' +
937
          u.link([msg.key], msg.repoName) +
938
          '<span class="right-bar">' +
939
          u.timestamp(msg.value.timestamp, req) +
940
          '</span></section>'
941
      })
942
    ),
943
    u.readOnce(function (cb) {
944
      cb(null, hasForks ? '' : req._t('NoForks'))
945
    })
946
  ]))
947
}
948
949
R.serveRepoForkPrompt = function (req, repo) {
950
  var title = req._t('Fork') + ' · %{author}/%{repo}'
951
  return this.renderRepoPage(req, repo, null, null, title, pull.once(
952
    '<form action="" method="post" onreset="history.back()">' +
953
    '<h3>' + req._t('ForkRepoPrompt') + '</h3>' +
954
    '<p>' + u.hiddenInputs({ id: repo.id }) +
955
    '<button class="btn open" type="submit" name="action" value="fork">' +
956
      req._t('Fork') +
957
    '</button>' +
958
    ' <button class="btn" type="reset">' +
959
      req._t('Cancel') + '</button>' +
960
    '</p></form>'
961
  ))
962
}
963
964
R.serveIssueOrPullRequest = function (req, repo, issue, path, id) {
965
  return issue.msg.value.content.type == 'pull-request'
966
    ? this.pulls.serveRepoPullReq(req, repo, issue, path, id)
967
    : this.issues.serveRepoIssue(req, repo, issue, path, id)
968
}
969