git ssb

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const renderer = require('ssb-markdown')
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const fs = require('fs')
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const h = require('mutant/h')
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const ref = require('ssb-ref')
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exports.needs = {
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  blob_url: 'first',
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  emoji_url: 'first'
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}
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exports.gives = {
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  markdown: true,
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  mcss: true
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}
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exports.create = function (api) {
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  return {
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    markdown,
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    mcss: () => fs.readFileSync(__filename.replace(/js$/, 'mcss'), 'utf8')
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  }
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  function markdown (content) {
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    if('string' === typeof content)
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      content = {text: content}
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    //handle patchwork style mentions.
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    var mentions = {}
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    if(Array.isArray(content.mentions))
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      content.mentions.forEach(function (link) {
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        if(link.name) mentions["@"+link.name] = link.link
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      })
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    var md = h('Markdown')
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    md.innerHTML = renderer.block(content.text, {
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      emoji: renderEmoji,
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      toUrl: (id) => {
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        if(ref.isBlob(id)) return api.blob_url(id)
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        return '#'+(mentions[id]?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) {
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    var url = api.emoji_url(emoji)
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    if (!url) return ':' + emoji + ':'
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    return '<img src="' + encodeURI(url) + '"'
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      + ' alt=":' + escape(emoji) + ':"'
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      + ' title=":' + escape(emoji) + ':"'
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      + ' class="emoji">'
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  }
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}
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