git ssb

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const renderer = require('ssb-markdown')
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const h = require('mutant/h')
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const ref = require('ssb-ref')
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const nest = require('depnest')
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var htmlEscape = require('html-escape')
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exports.needs = nest({
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  'blob.sync.url': 'first',
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  'emoji.sync.url': 'first'
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})
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exports.gives = nest('message.html.markdown')
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exports.create = function (api) {
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  return nest('message.html.markdown', markdown)
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  function markdown (content) {
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    if (typeof content === 'string') { content = {text: content} }
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    // handle patchwork style mentions and custom emoji.
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    var mentions = {}
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    var emojiMentions = {}
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    if (Array.isArray(content.mentions)) {
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      content.mentions.forEach(function (link) {
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        if (link && link.name && link.link) {
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          if (link.emoji) emojiMentions[link.name] = link.link
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          else mentions['@' + link.name] = link.link
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        }
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      })
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    }
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    var md = h('div', {className: 'Markdown'})
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    md.innerHTML = renderer.block(content.text, {
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      emoji: (emoji) => {
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        var url = emojiMentions[emoji]
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          ? api.blob.sync.url(emojiMentions[emoji])
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          : api.emoji.sync.url(emoji)
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        return renderEmoji(emoji, url)
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      },
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      toUrl: (id) => {
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        if (ref.isBlob(id)) return api.blob.sync.url(id)
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        return mentions[id] || id
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      },
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      imageLink: (id) => id
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    })
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    return md
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  }
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  function renderEmoji (emoji, url) {
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    if (!url) return ':' + emoji + ':'
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    return `
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      <img
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        src="${htmlEscape(url)}"
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        alt=":${htmlEscape(emoji)}:"
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        title=":${htmlEscape(emoji)}:"
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        class="emoji"
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      >
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    `
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  }
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}
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