git ssb

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var fs = require('fs')
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var http = require('http')
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var path = require('path')
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var url = require('url')
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var qs = require('querystring')
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var ref = require('ssb-ref')
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var pull = require('pull-stream')
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var ssbGit = require('ssb-git-repo')
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var toPull = require('stream-to-pull-stream')
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var cat = require('pull-cat')
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var Repo = require('pull-git-repo')
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var ssbAbout = require('./about')
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var ssbVotes = require('./votes')
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var marked = require('ssb-marked')
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var asyncMemo = require('asyncmemo')
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var multicb = require('multicb')
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var schemas = require('ssb-msg-schemas')
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var Issues = require('ssb-issues')
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var paramap = require('pull-paramap')
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var blockRenderer = new marked.Renderer()
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blockRenderer.urltransform = function (url) {
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  if (ref.isLink(url))
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    return encodeLink(url)
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  return url
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}
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marked.setOptions({
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  gfm: true,
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  mentions: true,
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  tables: true,
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  breaks: true,
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  pedantic: false,
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  sanitize: true,
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  smartLists: true,
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  smartypants: false,
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  renderer: blockRenderer
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})
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function markdown(text) {
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  if (!text) return ''
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  if (typeof text != 'string') text = String(text)
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  return marked(text)
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}
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function parseAddr(str, def) {
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  if (!str) return def
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  var i = str.lastIndexOf(':')
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  if (~i) return {host: str.substr(0, i), port: str.substr(i+1)}
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  if (isNaN(str)) return {host: str, port: def.port}
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  return {host: def.host, port: str}
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}
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function flattenPath(parts) {
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  return '/' + parts.map(encodeURIComponent).join('/')
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}
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function encodeLink(url) {
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  return '/' + encodeURIComponent(url)
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}
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function link(parts, text, raw) {
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  var href = flattenPath(parts)
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  if (text == null) text = parts[parts.length-1]
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  if (!raw) text = escapeHTML(text)
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  return '<a href="' + escapeHTML(href) + '">' + text + '</a>'
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}
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function timestamp(time) {
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  time = Number(time)
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  var d = new Date(time)
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  return '<span title="' + time + '">' + d.toLocaleString() + '</span>'
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}
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function pre(text) {
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  return '<pre>' + escapeHTML(text) + '</pre>'
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}
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function json(obj) {
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  return pre(JSON.stringify(obj, null, 2))
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}
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function escapeHTML(str) {
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  return String(str)
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    .replace(/&/g, '&amp;')
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    .replace(/</g, '&lt;')
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    .replace(/>/g, '&gt;')
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    .replace(/"/g, '&quot;')
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}
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function escapeHTMLStream() {
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  return pull.map(function (buf) {
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    return escapeHTML(buf.toString('utf8'))
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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(
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        read,
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        pull.map(function (li) {
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          return '<li>' + li + '</li>'
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        })
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      ),
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      pull.once('</ul>')
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    ])
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  }
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}
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function renderNameForm(enabled, id, name, action, inputId, title, header) {
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  if (!inputId) inputId = action
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  return '<form class="petname" action="" method="post">' +
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    (enabled ?
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      '<input type="checkbox" class="name-checkbox" id="' + inputId + '" ' +
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        'onfocus="this.form.name.focus()" />' +
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      '<input name="name" class="name" value="' + escapeHTML(name) + '" ' +
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        'onkeyup="if (event.keyCode == 27) this.form.reset()" />' +
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      '<input type="hidden" name="action" value="' + action + '">' +
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      '<input type="hidden" name="id" value="' +
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        escapeHTML(id) + '">' +
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      '<label class="name-toggle" for="' + inputId + '" ' +
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        'title="' + title + '"><i>✍</i></label> ' +
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      '<input class="btn name-btn" type="submit" value="Rename">' +
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      header :
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      header + '<br clear="all"/>'
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    ) +
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  '</form>'
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}
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function wrap(tag) {
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  return function (read) {
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    return cat([
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      pull.once('<' + tag + '>'),
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      read,
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      pull.once('</' + tag + '>')
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    ])
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  }
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}
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function readNext(fn) {
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  var next
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  return function (end, cb) {
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    if (next) return next(end, cb)
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    fn(function (err, _next) {
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      if (err) return cb(err)
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      next = _next
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      next(null, cb)
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    })
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  }
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}
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function readOnce(fn) {
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  var ended
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  return function (end, cb) {
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    fn(function (err, data) {
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      if (err || ended) return cb(err || ended)
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      ended = true
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      cb(null, data)
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    })
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  }
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}
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function tryDecodeURIComponent(str) {
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  if (!str || (str[0] == '%' && ref.isBlobId(str)))
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    return str
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  try {
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    str = decodeURIComponent(str)
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  } finally {
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    return str
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  }
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}
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function getRepoName(about, ownerId, repoId, cb) {
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  about.getName({
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    owner: ownerId,
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    target: repoId,
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    toString: function () {
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      // hack to fit two parameters into asyncmemo
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      return ownerId + '/' + repoId
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    }
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  }, cb)
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}
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function addAuthorName(about) {
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  return paramap(function (msg, cb) {
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    about.getName(msg.value.author, function (err, authorName) {
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      msg.authorName = authorName
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      cb(err, msg)
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    })
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  }, 8)
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}
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var hasOwnProp = Object.prototype.hasOwnProperty
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function getContentType(filename) {
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  var ext = filename.split('.').pop()
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  return hasOwnProp.call(contentTypes, ext)
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    ? contentTypes[ext]
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    : 'text/plain; charset=utf-8'
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}
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var contentTypes = {
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  css: 'text/css'
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}
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var staticBase = path.join(__dirname, 'static')
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function readReqJSON(req, cb) {
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  pull(
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    toPull(req),
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    pull.collect(function (err, bufs) {
231
      if (err) return cb(err)
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      var data
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      try {
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        data = qs.parse(Buffer.concat(bufs).toString('ascii'))
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      } catch(e) {
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        return cb(e)
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      }
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      cb(null, data)
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    })
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  )
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}
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var msgTypes = {
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  'git-repo': true,
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  'git-update': true,
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  'issue': true
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}
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var refLabels = {
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  heads: 'Branches',
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  tags: 'Tags'
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}
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var imgMimes = {
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  png: 'image/png',
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  jpeg: 'image/jpeg',
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  jpg: 'image/jpeg',
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  gif: 'image/gif',
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  tif: 'image/tiff',
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  svg: 'image/svg+xml',
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  bmp: 'image/bmp'
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}
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var markdownFilenameRegex = /\.md$|\/.markdown$/i
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module.exports = function (opts, cb) {
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  var ssb, reconnect, myId, getRepo, getVotes, getMsg, issues
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  var about = function (id, cb) { cb(null, {name: id}) }
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  var reqQueue = []
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  var isPublic = opts.public
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  var ssbAppname = opts.appname || 'ssb'
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  var addr = parseAddr(opts.listenAddr, {host: 'localhost', port: 7718})
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  http.createServer(onRequest).listen(addr.port, addr.host, onListening)
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  var server = {
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    setSSB: function (_ssb, _reconnect) {
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      _ssb.whoami(function (err, feed) {
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        if (err) throw err
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        ssb = _ssb
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        reconnect = _reconnect
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        myId = feed.id
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        about = ssbAbout(ssb, myId)
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        while (reqQueue.length)
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          onRequest.apply(this, reqQueue.shift())
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        getRepo = asyncMemo(function (id, cb) {
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          getMsg(id, function (err, msg) {
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            if (err) return cb(err)
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            ssbGit.getRepo(ssb, {key: id, value: msg}, {live: true}, cb)
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          })
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        })
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        getVotes = ssbVotes(ssb)
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        getMsg = asyncMemo(ssb.get)
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        issues = Issues.init(ssb)
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      })
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    }
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  }
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  function onListening() {
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    var host = ~addr.host.indexOf(':') ? '[' + addr.host + ']' : addr.host
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    console.log('Listening on http://' + host + ':' + addr.port + '/')
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    cb(null, server)
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  }
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  /* Serving a request */
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  function onRequest(req, res) {
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    console.log(req.method, req.url)
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    if (!ssb) return reqQueue.push(arguments)
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    pull(
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      handleRequest(req),
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      pull.filter(function (data) {
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        if (Array.isArray(data)) {
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          res.writeHead.apply(res, data)
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          return false
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        }
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        return true
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      }),
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      toPull(res)
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    )
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  }
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  function handleRequest(req) {
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    var u = req._u = url.parse(req.url, true)
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    var dirs = u.pathname.slice(1).split(/\/+/).map(tryDecodeURIComponent)
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    var dir = dirs[0]
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    if (req.method == 'POST') {
329
      if (isPublic)
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        return servePlainError(405, 'POST not allowed on public site')
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      return readNext(function (cb) {
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        readReqJSON(req, function (err, data) {
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          if (err) return cb(null, serveError(err, 400))
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          if (!data) return cb(null, serveError(new Error('No data'), 400))
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          switch (data.action) {
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            case 'vote':
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              var voteValue = +data.vote || 0
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              if (!data.id)
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                return cb(null, serveError(new Error('Missing vote id'), 400))
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              var msg = schemas.vote(data.id, voteValue)
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              return ssb.publish(msg, function (err) {
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                if (err) return cb(null, serveError(err))
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                cb(null, serveRedirect(req.url))
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              })
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              return
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          case 'repo-name':
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            if (!data.name)
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              return cb(null, serveError(new Error('Missing name'), 400))
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            if (!data.id)
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              return cb(null, serveError(new Error('Missing id'), 400))
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            var msg = schemas.name(data.id, data.name)
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            return ssb.publish(msg, function (err) {
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              if (err) return cb(null, serveError(err))
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              cb(null, serveRedirect(req.url))
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            })
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          case 'issue-title':
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            if (!data.name)
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              return cb(null, serveError(new Error('Missing name'), 400))
362
            if (!data.id)
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              return cb(null, serveError(new Error('Missing id'), 400))
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            var msg = Issues.schemas.edit(data.id, {title: data.name})
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            return ssb.publish(msg, function (err) {
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              if (err) return cb(null, serveError(err))
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              cb(null, serveRedirect(req.url))
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            })
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          case 'comment':
371
            if (!data.id)
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              return cb(null, serveError(new Error('Missing id'), 400))
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            // TODO: add ref mentions
374
            var msg = schemas.post(data.text, data.id, data.branch || data.id)
375
            if (data.open != null)
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              Issues.schemas.opens(msg, data.id)
377
            if (data.close != null)
378
              Issues.schemas.closes(msg, data.id)
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            return ssb.publish(msg, function (err) {
380
              if (err) return cb(null, serveError(err))
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              cb(null, serveRedirect(req.url))
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            })
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          case 'new-issue':
385
            return issues.new({
386
              project: dir,
387
              title: data.title,
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              text: data.text
389
            }, function (err, issue) {
390
              if (err) return cb(null, serveError(err))
391
              cb(null, serveRedirect(encodeLink(issue.id)))
392
            })
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394
          default:
395
            cb(null, servePlainError(400, 'What are you trying to do?'))
396
          }
397
        })
398
      })
399
    }
400
401
    if (dir == '')
402
      return serveIndex(req)
403
    else if (ref.isBlobId(dir))
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      return serveBlob(req, dir)
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    else if (ref.isMsgId(dir))
406
      return serveMessage(req, dir, dirs.slice(1))
407
    else if (ref.isFeedId(dir))
408
      return serveUserPage(dir)
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    else
410
      return serveFile(req, dirs)
411
  }
412
413
  function serveFile(req, dirs) {
414
    var filename = path.join.apply(path, [staticBase].concat(dirs))
415
    // prevent escaping base dir
416
    if (filename.indexOf(staticBase) !== 0)
417
      return servePlainError(403, '403 Forbidden')
418
419
    return readNext(function (cb) {
420
      fs.stat(filename, function (err, stats) {
421
        cb(null, err ?
422
          err.code == 'ENOENT' ? serve404(req)
423
          : servePlainError(500, err.message)
424
        : 'if-modified-since' in req.headers &&
425
          new Date(req.headers['if-modified-since']) >= stats.mtime ?
426
          pull.once([304])
427
        : stats.isDirectory() ?
428
          servePlainError(403, 'Directory not listable')
429
        : cat([
430
          pull.once([200, {
431
            'Content-Type': getContentType(filename),
432
            'Content-Length': stats.size,
433
            'Last-Modified': stats.mtime.toGMTString()
434
          }]),
435
          toPull(fs.createReadStream(filename))
436
        ]))
437
      })
438
    })
439
  }
440
441
  function servePlainError(code, msg) {
442
    return pull.values([
443
      [code, {
444
        'Content-Length': Buffer.byteLength(msg),
445
        'Content-Type': 'text/plain; charset=utf-8'
446
      }],
447
      msg
448
    ])
449
  }
450
451
  function serve404(req) {
452
    return servePlainError(404, '404 Not Found')
453
  }
454
455
  function serveRedirect(path) {
456
    var msg = '<!doctype><html><head><meta charset=utf-8>' +
457
      '<title>Redirect</title></head>' +
458
      '<body><p><a href="' + path + '">Continue</a></p></body></html>'
459
    return pull.values([
460
      [302, {
461
        'Content-Length': Buffer.byteLength(msg),
462
        'Content-Type': 'text/html',
463
        Location: path
464
      }],
465
      msg
466
    ])
467
  }
468
469
  function renderTry(read) {
470
    var ended
471
    return function (end, cb) {
472
      if (ended) return cb(ended)
473
      read(end, function (err, data) {
474
        if (err === true)
475
          cb(true)
476
        else if (err) {
477
          ended = true
478
          cb(null,
479
            '<h3>' + err.name + '</h3>' +
480
            '<pre>' + escapeHTML(err.stack) + '</pre>')
481
        } else
482
          cb(null, data)
483
      })
484
    }
485
  }
486
487
  function serveTemplate(title, code, read) {
488
    if (read === undefined) return serveTemplate.bind(this, title, code)
489
    return cat([
490
      pull.values([
491
        [code || 200, {
492
          'Content-Type': 'text/html'
493
        }],
494
        '<!doctype html><html><head><meta charset=utf-8>',
495
        '<title>' + escapeHTML(title || 'git ssb') + '</title>',
496
        '<link rel=stylesheet href="/styles.css"/>',
497
        '</head>\n',
498
        '<body>',
499
        '<header>',
500
        '<h1><a href="/">git ssb' +
501
          (ssbAppname != 'ssb' ? ' <sub>' + ssbAppname + '</sub>' : '') +
502
        '</a></h1>',
503
        '</header>',
504
        '<article>']),
505
      renderTry(read),
506
      pull.once('<hr/></article></body></html>')
507
    ])
508
  }
509
510
  function serveError(err, status) {
511
    if (err.message == 'stream is closed')
512
      reconnect()
513
    return pull(
514
      pull.once(
515
        '<h2>' + err.name + '</h3>' +
516
        '<pre>' + escapeHTML(err.stack) + '</pre>'),
517
      serveTemplate(err.name, status || 500)
518
    )
519
  }
520
521
  /* Feed */
522
523
  function renderFeed(feedId) {
524
    var opts = {
525
      reverse: true,
526
      id: feedId
527
    }
528
    return pull(
529
      feedId ? ssb.createUserStream(opts) : ssb.createFeedStream(opts),
530
      pull.filter(function (msg) {
531
        return msg.value.content.type in msgTypes &&
532
          msg.value.timestamp < Date.now()
533
      }),
534
      pull.take(20),
535
      addAuthorName(about),
536
      pull.asyncMap(renderFeedItem)
537
    )
538
  }
539
540
  function renderFeedItem(msg, cb) {
541
    var c = msg.value.content
542
    var msgLink = link([msg.key],
543
      new Date(msg.value.timestamp).toLocaleString())
544
    var author = msg.value.author
545
    var authorLink = link([msg.value.author], msg.authorName)
546
    switch (c.type) {
547
      case 'git-repo':
548
        return getRepoName(about, author, msg.key, function (err, repoName) {
549
          if (err) return cb(err)
550
          var repoLink = link([msg.key], repoName)
551
          cb(null, '<section class="collapse">' + msgLink + '<br>' +
552
            authorLink + ' created repo ' + repoLink + '</section>')
553
        })
554
      case 'git-update':
555
        return getRepoName(about, author, c.repo, function (err, repoName) {
556
          if (err) return cb(err)
557
          var repoLink = link([c.repo], repoName)
558
          cb(null, '<section class="collapse">' + msgLink + '<br>' +
559
            authorLink + ' pushed to ' + repoLink + '</section>')
560
        })
561
      case 'issue':
562
        var issueLink = link([msg.key], c.title)
563
        return cb(null, '<section class="collapse">' + msgLink + '<br>' +
564
          authorLink + ' opened issue ' + issueLink + '</section>')
565
    }
566
  }
567
568
  /* Index */
569
570
  function serveIndex() {
571
    return serveTemplate('git ssb')(renderFeed())
572
  }
573
574
  function serveUserPage(feedId) {
575
    return serveTemplate(feedId)(cat([
576
      readOnce(function (cb) {
577
        about.getName(feedId, function (err, name) {
578
          cb(null, '<h2>' + link([feedId], name) +
579
          '<code class="user-id">' + feedId + '</code></h2>')
580
        })
581
      }),
582
      renderFeed(feedId),
583
    ]))
584
  }
585
586
  /* Message */
587
588
  function serveMessage(req, id, path) {
589
    return readNext(function (cb) {
590
      ssb.get(id, function (err, msg) {
591
        if (err) return cb(null, serveError(err))
592
        var c = msg.content || {}
593
        switch (c.type) {
594
          case 'git-repo':
595
            return getRepo(id, function (err, repo) {
596
              if (err) return cb(null, serveError(err))
597
              cb(null, serveRepoPage(req, Repo(repo), path))
598
            })
599
          case 'git-update':
600
            return getRepo(c.repo, function (err, repo) {
601
              if (err) return cb(null, serveRepoNotFound(c.repo, err))
602
              cb(null, serveRepoUpdate(req, Repo(repo), id, msg, path))
603
            })
604
          case 'issue':
605
            return getRepo(c.project, function (err, repo) {
606
              if (err) return cb(null, serveRepoNotFound(c.project, err))
607
              issues.get(id, function (err, issue) {
608
                if (err) return cb(null, serveError(err))
609
                cb(null, serveRepoIssue(req, Repo(repo), issue, path))
610
              })
611
            })
612
          default:
613
            if (ref.isMsgId(c.repo))
614
              return getRepo(c.repo, function (err, repo) {
615
                if (err) return cb(null, serveRepoNotFound(c.repo, err))
616
                cb(null, serveRepoSomething(req, Repo(repo), id, msg, path))
617
              })
618
            else
619
              return cb(null, serveGenericMessage(req, id, msg, path))
620
        }
621
      })
622
    })
623
  }
624
625
  function serveGenericMessage(req, id, msg, path) {
626
    return serveTemplate(id)(pull.once(
627
      '<section><h2>' + link([id]) + '</h2>' +
628
      json(msg) +
629
      '</section>'))
630
  }
631
632
  /* Repo */
633
634
  function serveRepoPage(req, repo, path) {
635
    var defaultBranch = 'master'
636
    var query = req._u.query
637
638
    if (query.rev != null) {
639
      // Allow navigating revs using GET query param.
640
      // Replace the branch in the path with the rev query value
641
      path[0] = path[0] || 'tree'
642
      path[1] = query.rev
643
      req._u.pathname = flattenPath([repo.id].concat(path))
644
      delete req._u.query.rev
645
      delete req._u.search
646
      return serveRedirect(url.format(req._u))
647
    }
648
649
    var branch = path[1] || defaultBranch
650
    var filePath = path.slice(2)
651
    switch (path[0]) {
652
      case undefined:
653
        return serveRepoTree(repo, branch, [])
654
      case 'activity':
655
        return serveRepoActivity(repo, branch)
656
      case 'commits':
657
        return serveRepoCommits(repo, branch)
658
      case 'commit':
659
        return serveRepoCommit(repo, path[1])
660
      case 'tree':
661
        return serveRepoTree(repo, branch, filePath)
662
      case 'blob':
663
        return serveRepoBlob(repo, branch, filePath)
664
      case 'raw':
665
        return serveRepoRaw(repo, branch, filePath)
666
      case 'digs':
667
        return serveRepoDigs(repo)
668
      case 'issues':
669
        switch (path[1]) {
670
          case '':
671
          case undefined:
672
            return serveRepoIssues(repo, branch, filePath)
673
          case 'new':
674
            if (filePath.length == 0)
675
              return serveRepoNewIssue(repo)
676
        }
677
      default:
678
        return serve404(req)
679
    }
680
  }
681
682
  function serveRepoNotFound(id, err) {
683
    return serveTemplate('Repo not found', 404, pull.values([
684
      '<h2>Repo not found</h2>',
685
      '<p>Repo ' + id + ' was not found</p>',
686
      '<pre>' + escapeHTML(err.stack) + '</pre>',
687
    ]))
688
  }
689
690
  function renderRepoPage(repo, branch, body) {
691
    var gitUrl = 'ssb://' + repo.id
692
    var gitLink = '<input class="clone-url" readonly="readonly" ' +
693
      'value="' + gitUrl + '" size="' + (2 + gitUrl.length) + '" ' +
694
      'onclick="this.select()"/>'
695
    var digsPath = [repo.id, 'digs']
696
697
    var done = multicb({ pluck: 1, spread: true })
698
    getRepoName(about, repo.feed, repo.id, done())
699
    about.getName(repo.feed, done())
700
    getVotes(repo.id, done())
701
702
    return readNext(function (cb) {
703
      done(function (err, repoName, authorName, votes) {
704
        if (err) return cb(null, serveError(err))
705
        var upvoted = votes.upvoters[myId] > 0
706
        cb(null, serveTemplate(repo.id)(cat([
707
          pull.once(
708
            '<div class="repo-title">' +
709
            '<form class="right-bar" action="" method="post">' +
710
              '<button class="btn" ' +
711
              (isPublic ? 'disabled="disabled"' : ' type="submit"') + '>' +
712
                '<i>✌</i> ' + (!isPublic && upvoted ? 'Undig' : 'Dig') +
713
                '</button>' +
714
              (isPublic ? '' : '<input type="hidden" name="vote" value="' +
715
                  (upvoted ? '0' : '1') + '">' +
716
                '<input type="hidden" name="action" value="vote">' +
717
                '<input type="hidden" name="id" value="' +
718
                  escapeHTML(repo.id) + '">') + ' ' +
719
              '<strong>' + link(digsPath, votes.upvotes) + '</strong>' +
720
            '</form>' +
721
            renderNameForm(!isPublic, repo.id, repoName, 'repo-name', null,
722
              'Rename the repo',
723
              '<h2>' + link([repo.feed], authorName) + ' / ' +
724
                link([repo.id], repoName) + '</h2>') +
725
            '</div><div class="repo-nav">' + link([repo.id], 'Code') +
726
              link([repo.id, 'activity'], 'Activity') +
727
              link([repo.id, 'commits', branch || ''], 'Commits') +
728
              link([repo.id, 'issues'], 'Issues') +
729
              gitLink +
730
            '</div>'),
731
          body
732
        ])))
733
      })
734
    })
735
  }
736
737
  function serveRepoTree(repo, rev, path) {
738
    var type = repo.isCommitHash(rev) ? 'Tree' : 'Branch'
739
    return renderRepoPage(repo, rev, cat([
740
      pull.once('<section><form action="" method="get">' +
741
        '<h3>' + type + ': ' + rev + ' '),
742
      revMenu(repo, rev),
743
      pull.once('</h3></form>'),
744
      type == 'Branch' && renderRepoLatest(repo, rev),
745
      pull.once('</section><section>'),
746
      renderRepoTree(repo, rev, path),
747
      pull.once('</section>'),
748
      renderRepoReadme(repo, rev, path)
749
    ]))
750
  }
751
752
  /* Repo activity */
753
754
  function serveRepoActivity(repo, branch) {
755
    return renderRepoPage(repo, branch, cat([
756
      pull.once('<h3>Activity</h3>'),
757
      pull(
758
        ssb.links({
759
          type: 'git-update',
760
          dest: repo.id,
761
          source: repo.feed,
762
          rel: 'repo',
763
          values: true,
764
          reverse: true,
765
          limit: 8
766
        }),
767
        pull.map(renderRepoUpdate.bind(this, repo))
768
      )
769
    ]))
770
  }
771
772
  function renderRepoUpdate(repo, msg, full) {
773
    var c = msg.value.content
774
775
    var refs = c.refs ? Object.keys(c.refs).map(function (ref) {
776
      return {name: ref, value: c.refs[ref]}
777
    }) : []
778
    var numObjects = c.objects ? Object.keys(c.objects).length : 0
779
780
    return '<section class="collapse">' +
781
      link([msg.key], new Date(msg.value.timestamp).toLocaleString()) +
782
      '<br>' +
783
      (numObjects ? 'Pushed ' + numObjects + ' objects<br>' : '') +
784
      refs.map(function (update) {
785
        var name = escapeHTML(update.name)
786
        if (!update.value) {
787
          return 'Deleted ' + name
788
        } else {
789
          var commitLink = link([repo.id, 'commit', update.value])
790
          return name + ' &rarr; ' + commitLink
791
        }
792
      }).join('<br>') +
793
      '</section>'
794
  }
795
796
  /* Repo commits */
797
798
  function serveRepoCommits(repo, branch) {
799
    return renderRepoPage(repo, branch, cat([
800
      pull.once('<h3>Commits</h3>'),
801
      pull(
802
        repo.readLog(branch),
803
        pull.asyncMap(function (hash, cb) {
804
          repo.getCommitParsed(hash, function (err, commit) {
805
            if (err) return cb(err)
806
            var commitPath = [repo.id, 'commit', commit.id]
807
            var treePath = [repo.id, 'tree', commit.id]
808
            cb(null, '<section class="collapse">' +
809
              '<strong>' + link(commitPath, commit.title) + '</strong><br>' +
810
              '<code>' + commit.id + '</code> ' +
811
                link(treePath, 'Tree') + '<br>' +
812
              (commit.separateAuthor ? escapeHTML(commit.author.name) + ' authored on ' + commit.author.date.toLocaleString() + '<br>' : '') +
813
              escapeHTML(commit.committer.name) + ' committed on ' + commit.committer.date.toLocaleString() +
814
              '</section>')
815
          })
816
        })
817
      )
818
    ]))
819
  }
820
821
  /* Repo tree */
822
823
  function revMenu(repo, currentName) {
824
    var currentGroup
825
    return cat([
826
      pull.once('<select name="rev" onchange="this.form.submit()">'),
827
      pull(
828
        repo.refs(),
829
        pull.map(function (ref) {
830
          var m = ref.name.match(/^refs\/([^\/]*)\/(.*)$/) || [,, ref.name]
831
          var group = m[1]
832
          var name = m[2]
833
834
          var optgroup = (group === currentGroup) ? '' :
835
            (currentGroup ? '</optgroup>' : '') +
836
            '<optgroup label="' + (refLabels[group] || group) + '">'
837
          currentGroup = group
838
          var selected = (name == currentName) ? ' selected="selected"' : ''
839
          var htmlName = escapeHTML(name)
840
          return optgroup +
841
            '<option value="' + htmlName + '"' + selected + '>' +
842
              htmlName + '</option>'
843
        })
844
      ),
845
      readOnce(function (cb) {
846
        cb(null, currentGroup ? '</optgroup>' : '')
847
      }),
848
      pull.once('</select> ' +
849
        '<noscript><input type="submit" value="Go" /></noscript>')
850
    ])
851
  }
852
853
  function renderRepoLatest(repo, rev) {
854
    return readOnce(function (cb) {
855
      repo.getCommitParsed(rev, function (err, commit) {
856
        if (err) return cb(err)
857
        var commitPath = [repo.id, 'commit', commit.id]
858
        cb(null,
859
          'Latest: <strong>' + link(commitPath, commit.title) +
860
          '</strong><br>' +
861
          '<code>' + commit.id + '</code><br> ' +
862
          escapeHTML(commit.committer.name) + ' committed on ' +
863
          commit.committer.date.toLocaleString() +
864
          (commit.separateAuthor ? '<br>' +
865
            escapeHTML(commit.author.name) + ' authored on ' +
866
            commit.author.date.toLocaleString() : ''))
867
      })
868
    })
869
  }
870
871
  // breadcrumbs
872
  function linkPath(basePath, path) {
873
    path = path.slice()
874
    var last = path.pop()
875
    return path.map(function (dir, i) {
876
      return link(basePath.concat(path.slice(0, i+1)), dir)
877
    }).concat(last).join(' / ')
878
  }
879
880
  function renderRepoTree(repo, rev, path) {
881
    var pathLinks = path.length === 0 ? '' :
882
      ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
883
    return cat([
884
      pull.once('<h3>Files' + pathLinks + '</h3>'),
885
      pull(
886
        repo.readDir(rev, path),
887
        pull.map(function (file) {
888
          var type = (file.mode === 040000) ? 'tree' :
889
            (file.mode === 0160000) ? 'commit' : 'blob'
890
          if (type == 'commit')
891
            return ['<span title="git commit link">🖈</span>', '<span title="' + escapeHTML(file.id) + '">' + escapeHTML(file.name) + '</span>']
892
          var filePath = [repo.id, type, rev].concat(path, file.name)
893
          return ['<i>' + (type == 'tree' ? '📁' : '📄') + '</i>',
894
            link(filePath, file.name)]
895
        }),
896
        table('class="files"')
897
      )
898
    ])
899
  }
900
901
  /* Repo readme */
902
903
  function renderRepoReadme(repo, branch, path) {
904
    return readNext(function (cb) {
905
      pull(
906
        repo.readDir(branch, path),
907
        pull.filter(function (file) {
908
          return /readme(\.|$)/i.test(file.name)
909
        }),
910
        pull.take(1),
911
        pull.collect(function (err, files) {
912
          if (err) return cb(null, pull.empty())
913
          var file = files[0]
914
          if (!file)
915
            return cb(null, pull.once(path.length ? '' : '<p>No readme</p>'))
916
          repo.getObjectFromAny(file.id, function (err, obj) {
917
            if (err) return cb(err)
918
            cb(null, cat([
919
              pull.once('<section><h4>' + escapeHTML(file.name) + '</h4><hr/>'),
920
              markdownFilenameRegex.test(file.name) ?
921
                readOnce(function (cb) {
922
                  pull(obj.read, pull.collect(function (err, bufs) {
923
                    if (err) return cb(err)
924
                    var buf = Buffer.concat(bufs, obj.length)
925
                    cb(null, markdown(buf.toString()))
926
                  }))
927
                })
928
              : cat([
929
                pull.once('<pre>'),
930
                pull(obj.read, escapeHTMLStream()),
931
                pull.once('</pre>')
932
              ]),
933
              pull.once('</section>')
934
            ]))
935
          })
936
        })
937
      )
938
    })
939
  }
940
941
  /* Repo commit */
942
943
  function serveRepoCommit(repo, rev) {
944
    return renderRepoPage(repo, rev, cat([
945
      pull.once('<h3>Commit ' + rev + '</h3>'),
946
      readOnce(function (cb) {
947
        repo.getCommitParsed(rev, function (err, commit) {
948
          if (err) return cb(err)
949
          var commitPath = [repo.id, 'commit', commit.id]
950
          var treePath = [repo.id, 'tree', commit.tree]
951
          cb(null,
952
            '<p><strong>' + link(commitPath, commit.title) +
953
              '</strong></p>' +
954
            pre(commit.body) +
955
            '<p>' +
956
            (commit.separateAuthor ? escapeHTML(commit.author.name) +
957
              ' authored on ' + commit.author.date.toLocaleString() + '<br>'
958
              : '') +
959
            escapeHTML(commit.committer.name) + ' committed on ' +
960
              commit.committer.date.toLocaleString() + '</p>' +
961
            '<p>' + commit.parents.map(function (id) {
962
              return 'Parent: ' + link([repo.id, 'commit', id], id)
963
            }).join('<br>') + '</p>' +
964
            '<p>' +
965
              (commit.tree ? 'Tree: ' + link(treePath) : 'No tree') +
966
            '</p>')
967
        })
968
      })
969
    ]))
970
  }
971
972
  /* An unknown message linking to a repo */
973
974
  function serveRepoSomething(req, repo, id, msg, path) {
975
    return renderRepoPage(repo, null,
976
      pull.once('<section><h3>' + link([id]) + '</h3>' +
977
        json(msg) + '</section>'))
978
  }
979
980
  /* Repo update */
981
982
  function objsArr(objs) {
983
    return Array.isArray(objs) ? objs :
984
      Object.keys(objs).map(function (sha1) {
985
        var obj = Object.create(objs[sha1])
986
        obj.sha1 = sha1
987
        return obj
988
      })
989
  }
990
991
  function serveRepoUpdate(req, repo, id, msg, path) {
992
    var raw = req._u.query.raw != null
993
994
    // convert packs to old single-object style
995
    if (msg.content.indexes) {
996
      for (var i = 0; i < msg.content.indexes.length; i++) {
997
        msg.content.packs[i] = {
998
          pack: {link: msg.content.packs[i].link},
999
          idx: msg.content.indexes[i]
1000
        }
1001
      }
1002
    }
1003
1004
    return renderRepoPage(repo, null, pull.once(
1005
      (raw ? '<a href="?" class="raw-link header-align">Info</a>' :
1006
        '<a href="?raw" class="raw-link header-align">Data</a>') +
1007
      '<h3>Update</h3>' +
1008
      (raw ? '<section class="collapse">' + json(msg) + '</section>' :
1009
        renderRepoUpdate(repo, {key: id, value: msg}, true) +
1010
        (msg.content.objects ? '<h3>Objects</h3>' +
1011
          objsArr(msg.content.objects).map(renderObject).join('\n') : '') +
1012
        (msg.content.packs ? '<h3>Packs</h3>' +
1013
          msg.content.packs.map(renderPack).join('\n') : ''))))
1014
  }
1015
1016
  function renderObject(obj) {
1017
    return '<section class="collapse">' +
1018
      obj.type + ' ' + link([obj.link], obj.sha1) + '<br>' +
1019
      obj.length + ' bytes' +
1020
      '</section>'
1021
  }
1022
1023
  function renderPack(info) {
1024
    return '<section class="collapse">' +
1025
      (info.pack ? 'Pack: ' + link([info.pack.link]) + '<br>' : '') +
1026
      (info.idx ? 'Index: ' + link([info.idx.link]) : '') + '</section>'
1027
  }
1028
1029
  /* Blob */
1030
1031
  function serveRepoBlob(repo, rev, path) {
1032
    return readNext(function (cb) {
1033
      repo.getFile(rev, path, function (err, object) {
1034
        if (err) return cb(null, serveBlobNotFound(repo.id, err))
1035
        var type = repo.isCommitHash(rev) ? 'Tree' : 'Branch'
1036
        var pathLinks = path.length === 0 ? '' :
1037
          ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
1038
        var rawFilePath = [repo.id, 'raw', rev].concat(path)
1039
        var filename = path[path.length-1]
1040
        var extension = filename.split('.').pop()
1041
        cb(null, renderRepoPage(repo, rev, cat([
1042
          pull.once('<section><form action="" method="get">' +
1043
            '<h3>' + type + ': ' + rev + ' '),
1044
          revMenu(repo, rev),
1045
          pull.once('</h3></form>'),
1046
          type == 'Branch' && renderRepoLatest(repo, rev),
1047
          pull.once('</section><section class="collapse">' +
1048
            '<h3>Files' + pathLinks + '</h3>' +
1049
            '<div>' + object.length + ' bytes' +
1050
            '<span class="raw-link">' + link(rawFilePath, 'Raw') + '</span>' +
1051
            '</div></section>' +
1052
            '<section>'),
1053
          extension in imgMimes
1054
          ? pull.once('<img src="' + escapeHTML(flattenPath(rawFilePath)) +
1055
            '" alt="' + escapeHTML(filename) + '" />')
1056
          : markdownFilenameRegex.test(filename)
1057
          ? pull(object.read, escapeHTMLStream(), pull.map(markdown))
1058
          : pull(object.read, escapeHTMLStream(), wrap('pre')),
1059
          pull.once('</section>')
1060
        ])))
1061
      })
1062
    })
1063
  }
1064
1065
  function serveBlobNotFound(repoId, err) {
1066
    return serveTemplate(400, 'Blob not found', pull.values([
1067
      '<h2>Blob not found</h2>',
1068
      '<p>Blob in repo ' + link([repoId]) + ' was not found</p>',
1069
      '<pre>' + escapeHTML(err.stack) + '</pre>'
1070
    ]))
1071
  }
1072
1073
  /* Raw blob */
1074
1075
  function serveRepoRaw(repo, branch, path) {
1076
    return readNext(function (cb) {
1077
      repo.getFile(branch, path, function (err, object) {
1078
        if (err) return cb(null, servePlainError(404, 'Blob not found'))
1079
        var extension = path[path.length-1].split('.').pop()
1080
        var contentType = imgMimes[extension]
1081
        cb(null, pull(object.read, serveRaw(object.length, contentType)))
1082
      })
1083
    })
1084
  }
1085
1086
  function serveRaw(length, contentType) {
1087
    var inBody
1088
    var headers = {
1089
      'Content-Type': contentType || 'text/plain; charset=utf-8',
1090
      'Cache-Control': 'max-age=31536000'
1091
    }
1092
    if (length != null)
1093
      headers['Content-Length'] = length
1094
    return function (read) {
1095
      return function (end, cb) {
1096
        if (inBody) return read(end, cb)
1097
        if (end) return cb(true)
1098
        cb(null, [200, headers])
1099
        inBody = true
1100
      }
1101
    }
1102
  }
1103
1104
  function serveBlob(req, key) {
1105
    return readNext(function (cb) {
1106
      ssb.blobs.want(key, function (err, got) {
1107
        if (err) cb(null, serveError(err))
1108
        else if (!got) cb(null, serve404(req))
1109
        else cb(null, serveRaw()(ssb.blobs.get(key)))
1110
      })
1111
    })
1112
  }
1113
1114
  /* Digs */
1115
1116
  function serveRepoDigs(repo) {
1117
    return readNext(function (cb) {
1118
      getVotes(repo.id, function (err, votes) {
1119
        cb(null, renderRepoPage(repo, '', cat([
1120
          pull.once('<section><h3>Digs</h3>' +
1121
            '<div>Total: ' + votes.upvotes + '</div>'),
1122
          pull(
1123
            pull.values(Object.keys(votes.upvoters)),
1124
            pull.asyncMap(function (feedId, cb) {
1125
              about.getName(feedId, function (err, name) {
1126
                if (err) return cb(err)
1127
                cb(null, link([feedId], name))
1128
              })
1129
            }),
1130
            ul()
1131
          ),
1132
          pull.once('</section>')
1133
        ])))
1134
      })
1135
    })
1136
  }
1137
1138
  /* Issues */
1139
1140
  function serveRepoIssues(repo, issueId, path) {
1141
    var numIssues = 0
1142
    return renderRepoPage(repo, '', cat([
1143
      pull.once(
1144
        (isPublic ? '' :
1145
          '<div class="right-bar">' + link([repo.id, 'issues', 'new'],
1146
            '<button class="btn">&plus; New Issue</button>', true) +
1147
          '</div>') +
1148
        '<h3>Issues</h3>'),
1149
      pull(
1150
        issues.createFeedStream({ project: repo.id }),
1151
        pull.map(function (issue) {
1152
          numIssues++
1153
          return '<section class="collapse">' +
1154
            '<a href="' + encodeLink(issue.id) + '">' +
1155
              escapeHTML(issue.title) +
1156
              '<span class="issue-info">' +
1157
                new Date(issue.created_at).toLocaleString() +
1158
              '</span>' +
1159
            '</a>' +
1160
            '</section>'
1161
        })
1162
      ),
1163
      readOnce(function (cb) {
1164
        cb(null, numIssues > 0 ? '' : '<p>No issues</p>')
1165
      })
1166
    ]))
1167
  }
1168
1169
  /* New Issue */
1170
1171
  function serveRepoNewIssue(repo, issueId, path) {
1172
    return renderRepoPage(repo, '', pull.once(
1173
      '<h3>New Issue</h3>' +
1174
      '<section><form class="new-issue" action="" method="post">' +
1175
      '<input type="hidden" name="action" value="new-issue">' +
1176
      '<p><input class="wide-input" name="title" placeholder="Issue Title" size="69" /></p>' +
1177
      '<p><textarea class="wide-input" name="text" placeholder="Description" rows="12" cols="69"></textarea></p>' +
1178
      '<button type="submit" class="btn">Create</button>' +
1179
      '</form></section>'))
1180
  }
1181
1182
  /* Issue */
1183
1184
  function serveRepoIssue(req, repo, issue, path) {
1185
    var isAuthor = (myId == issue.author) || (myId == repo.feed)
1186
    return renderRepoPage(repo, null, cat([
1187
      pull.once(
1188
        renderNameForm(!isPublic, issue.id, issue.title, 'issue-title', null,
1189
          'Rename the issue',
1190
          '<h3>' + issue.title + '</h3>') +
1191
        '<code>' + issue.id + '</code>' +
1192
        '<section class="collapse">' +
1193
        (issue.open
1194
          ? '<strong class="issue-status open">Open</strong>'
1195
          : '<strong class="issue-status closed">Closed</strong>')),
1196
      readOnce(function (cb) {
1197
        about.getName(issue.author, function (err, authorName) {
1198
          if (err) return cb(err)
1199
          var authorLink = link([issue.author], authorName)
1200
          cb(null,
1201
            authorLink + ' opened this issue on ' + timestamp(issue.created_at) +
1202
            '<hr/>' +
1203
            markdown(issue.text) +
1204
            '</section>')
1205
        })
1206
      }),
1207
      // render posts and edits
1208
      pull(
1209
        ssb.links({
1210
          dest: issue.id,
1211
          values: true
1212
        }),
1213
        pull.unique('key'),
1214
        addAuthorName(about),
1215
        pull.map(function (msg) {
1216
          var authorLink = link([msg.value.author], msg.authorName)
1217
          var msgTimeLink = link([msg.key],
1218
            new Date(msg.value.timestamp).toLocaleString())
1219
          var c = msg.value.content
1220
          switch (c.type) {
1221
            case 'post':
1222
              if (c.root == issue.id) {
1223
                var changed = issues.isStatusChanged(msg, issue)
1224
                return '<section class="collapse">' +
1225
                  authorLink +
1226
                  (changed == null ? '' : ' ' + (
1227
                    changed ? 'reopened this issue' : 'closed this issue')) +
1228
                  ' &middot; ' + msgTimeLink +
1229
                  markdown(c.text) +
1230
                  '</section>'
1231
              } else {
1232
                var text = c.text || (c.type + ' ' + msg.key)
1233
                return '<section class="collapse mention-preview">' +
1234
                  authorLink + ' mentioned this issue in ' +
1235
                  link([msg.key], String(text).substr(0, 140)) +
1236
                  '</section>'
1237
              }
1238
            case 'issue-edit':
1239
              return '<section class="collapse">' +
1240
                (c.title == null ? '' :
1241
                  authorLink + ' renamed this issue to <q>' +
1242
                  escapeHTML(c.title) + '</q>') +
1243
                  ' &middot; ' + msgTimeLink +
1244
                '</section>'
1245
            default:
1246
              return '<section class="collapse">' +
1247
                authorLink +
1248
                ' &middot; ' + msgTimeLink +
1249
                json(c) +
1250
                '</section>'
1251
          }
1252
        })
1253
      ),
1254
      pull.once(isPublic ? '' : '<section><form action="" method="post">' +
1255
        '<input type="hidden" name="action" value="comment">' +
1256
        '<input type="hidden" name="id" value="' + issue.id + '">' +
1257
        '<textarea name="text" class="wide-input" rows="6" cols="69"></textarea>' +
1258
        (isAuthor ?
1259
          '<input type="submit" class="btn"' +
1260
          ' name="' + (issue.open ? 'close' : 'open') + '"' +
1261
          ' value="' + (issue.open ? 'Close issue' : 'Reopen issue') + '"' +
1262
          '/>' : '') +
1263
        '<input type="submit" class="btn open" value="Comment" />' +
1264
      '</form></section>')
1265
    ]))
1266
  }
1267
1268
}
1269