git ssb

1
const { h, when, send, resolve, Value, computed } = require('mutant')
2
const nest = require('depnest')
3
const ssbMentions = require('ssb-mentions')
4
const extend = require('xtend')
5
const addSuggest = require('suggest-box')
6
7
exports.gives = nest('message.html.compose')
8
9
exports.needs = nest({
10
  'about.async.suggest': 'first',
11
  'blob.html.input': 'first',
12
  'channel.async.suggest': 'first',
13
  'emoji.sync': {
14
    names: 'first',
15
    url: 'first'
16
  },
17
  'message.html.confirm': 'first'
18
})
19
20
exports.create = function (api) {
21
  return nest({ 'message.html.compose': compose })
22
23
  function compose ({ shrink = true, meta, prepublish, placeholder = 'Write a message' }, cb) {
24
    var files = []
25
    var filesById = {}
26
    var channelInputFocused = Value(false)
27
    var textAreaFocused = Value(false)
28
    var focused = computed([channelInputFocused, textAreaFocused], (a, b) => a || b)
29
    var hasContent = Value(false)
30
    var getProfileSuggestions = api.about.async.suggest()
31
    var getChannelSuggestions = api.channel.async.suggest()
32
33
    var blurTimeout = null
34
35
    var expanded = computed([shrink, focused, hasContent], (shrink, focused, hasContent) => {
36
      if (!shrink || hasContent) return true
37
38
      return focused
39
    })
40
41
    var channelInput = h('input.channel', {
42
      'ev-input': () => hasContent.set(!!channelInput.value),
43
      'ev-keyup': ev => {
44
        ev.target.value = ev.target.value.replace(/^#*([\w@%&])/, '#$1')
45
      },
46
      'ev-blur': () => {
47
        clearTimeout(blurTimeout)
48
        blurTimeout = setTimeout(() => channelInputFocused.set(false), 200)
49
      },
50
      'ev-focus': send(channelInputFocused.set, true),
51
      placeholder: '#channel (optional)',
52
      value: computed(meta.channel, ch => ch ? '#' + ch : null),
53
      disabled: when(meta.channel, true),
54
      title: when(meta.channel, 'Reply is in same channel as original message')
55
    })
56
57
    var textArea = h('textarea', {
58
      'ev-input': () => hasContent.set(!!textArea.value),
59
      'ev-blur': () => {
60
        clearTimeout(blurTimeout)
61
        blurTimeout = setTimeout(() => textAreaFocused.set(false), 200)
62
      },
63
      'ev-focus': send(textAreaFocused.set, true),
64
      placeholder
65
    })
66
    textArea.publish = publish // TODO: fix - clunky api for the keyboard shortcut to target
67
68
    var warningMessage = Value(null)
69
    var warning = h('section.warning',
70
      { className: when(warningMessage, '-open', '-closed') },
71
      [
72
        h('div.warning', warningMessage),
73
        h('div.close', { 'ev-click': () => warningMessage.set(null) }, 'x')
74
      ]
75
    )
76
    var fileInput = api.blob.html.input(file => {
77
78
      const megabytes = file.size / 1024 / 1024
79
      if (megabytes >= 5) {
80
        const rounded = Math.floor(megabytes*100)/100
81
        warningMessage.set([
82
          h('i.fa.fa-exclamation-triangle'),
83
          h('strong', file.name),
84
          ` is ${rounded}MB - the current limit is 5MB`
85
        ])
86
        return
87
      }
88
89
      files.push(file)
90
      filesById[file.link] = file
91
92
      const pos = textArea.selectionStart
93
      const embed = file.type.match(/^image/) ? '!' : ''
94
      const spacer = embed ? '\n' : ' '
95
      const insertLink = spacer + embed + '[' + file.name + ']' + '(' + file.link + ')' + spacer
96
97
      textArea.value = textArea.value.slice(0, pos) + insertLink + textArea.value.slice(pos)
98
99
      console.log('added:', file)
100
    })
101
102
    fileInput.onclick = () => hasContent.set(true)
103
104
    var publishBtn = h('button', { 'ev-click': publish }, 'Publish')
105
106
    var actions = h('section.actions', [
107
      fileInput,
108
      publishBtn
109
    ])
110
111
    var composer = h('Compose', {
112
      classList: when(expanded, '-expanded', '-contracted')
113
    }, [
114
      channelInput,
115
      textArea,
116
      warning,
117
      actions
118
    ])
119
120
    addSuggest(channelInput, (inputText, cb) => {
121
      if (inputText[0] === '#') {
122
        cb(null, getChannelSuggestions(inputText.slice(1)))
123
      }
124
    }, {cls: 'SuggestBox'})
125
    channelInput.addEventListener('suggestselect', ev => {
126
      channelInput.value = ev.detail.id  // HACK : this over-rides the markdown value
127
    })
128
129
    addSuggest(textArea, (inputText, cb) => {
130
      if (inputText[0] === '@') {
131
        cb(null, getProfileSuggestions(inputText.slice(1)))
132
      } else if (inputText[0] === '#') {
133
        cb(null, getChannelSuggestions(inputText.slice(1)))
134
      } else if (inputText[0] === ':') {
135
        // suggest emojis
136
        var word = inputText.slice(1)
137
        if (word[word.length - 1] === ':') {
138
          word = word.slice(0, -1)
139
        }
140
        word = word.toLowerCase()
141
        // TODO: when no emoji typed, list some default ones
142
143
        const suggestions = api.emoji.sync.names()
144
          .filter(name => ~name.indexOf(word))
145
          .slice(0, 100).map(emoji => {
146
            return {
147
              image: api.emoji.sync.url(emoji),
148
              title: emoji,
149
              subtitle: emoji,
150
              value: ':' + emoji + ':'
151
            }
152
          })
153
154
        cb(null, suggestions)
155
      }
156
    }, {cls: 'SuggestBox'})
157
158
    return composer
159
160
    // scoped
161
162
    function publish () {
163
      publishBtn.disabled = true
164
165
      const channel = channelInput.value.startsWith('#')
166
        ? channelInput.value.substr(1).trim()
167
        : channelInput.value.trim()
168
      const mentions = ssbMentions(textArea.value).map(mention => {
169
        // merge markdown-detected mention with file info
170
        var file = filesById[mention.link]
171
        if (file) {
172
          if (file.type) mention.type = file.type
173
          if (file.size) mention.size = file.size
174
        }
175
        return mention
176
      })
177
178
      var content = extend(resolve(meta), {
179
        text: textArea.value,
180
        channel,
181
        mentions
182
      })
183
184
      if (!channel) delete content.channel
185
      if (!mentions.length) delete content.mentions
186
      if (content.recps && content.recps.length === 0) delete content.recps
187
188
      try {
189
        if (typeof prepublish === 'function') {
190
          content = prepublish(content)
191
        }
192
      } catch (err) {
193
        publishBtn.disabled = false
194
        if (cb) cb(err)
195
        else throw err
196
      }
197
198
      return api.message.html.confirm(content, done)
199
200
      function done (err, msg) {
201
        publishBtn.disabled = false
202
        if (err) throw err
203
        else if (msg) textArea.value = ''
204
        if (cb) cb(err, msg)
205
      }
206
    }
207
  }
208
}
209