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/*
ssb-mentions
Copyright (c) 2016 Dominic Tarr
Copyright (c) 2020 Charles Lehner
Permission is hereby granted, free of charge,
to any person obtaining a copy of this software and
associated documentation files (the "Software"), to
deal in the Software without restriction, including
without limitation the rights to use, copy, modify,
merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom
the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice
shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var ref = require('ssb-ref')
var marked = require('./ssb-marked')
var u = require('../lib/util')
function noop(){}
var onLink = noop
var extractor = new marked.Renderer()
// prevent html from entering into mention labels.
// code taken from ssb-markdown
extractor.code = function(code, lang, escaped) { return escaped ? unquote(code) : code }
extractor.blockquote = function(quote) { return unquote(quote) }
extractor.html = function(html) { return false }
extractor.heading = function(text, level, raw) { return unquote(text)+' ' }
extractor.hr = function() { return ' --- ' }
extractor.br = function() { return ' ' }
extractor.list = function(body, ordered) { return unquote(body) }
extractor.listitem = function(text) { return '- '+unquote(text) }
extractor.paragraph = function(text) { return unquote(text)+' ' }
extractor.table = function(header, body) { return unquote(header + ' ' + body) }
extractor.tablerow = function(content) { return unquote(content) }
extractor.tablecell = function(content, flags) { return unquote(content) }
extractor.strong = function(text) { return unquote(text) }
extractor.em = function(text) { return unquote(text) }
extractor.codespan = function(text) { return unquote(text) }
extractor.del = function(text) { return unquote(text) }
function unquote (text) {
return text.replace(/&/g, '&').replace(/"/g, '"').replace(/'/g, '\'')
}
extractor.mention = function (_, id) {
onLink({target: id})
}
extractor.emoji = function (name) {
onLink({label: name, emoji: true})
}
extractor.hashtag = function (_, hashtag) {
onLink({target: hashtag})
}
extractor.link = function (href, _, text) {
onLink({label: text, target: href, embed: false})
}
extractor.image = function (href, _, text) {
onLink({label: text, target: href, embed: true})
}
function links (s, _onLink) {
if('string' !== typeof s) return
onLink = _onLink
try {
marked(s, {renderer: extractor, emoji: extractor.emoji})
} catch(err) {
console.log(JSON.stringify(s))
throw err
}
onLink = noop
}
module.exports = function (text, opts) {
var bareFeedNames = opts && opts.bareFeedNames
var emoji = opts && opts.emoji
var a = []
links(text, function (link) {
if (link.target && typeof link.target === 'string'
&& link.target.substr(0, 4) === 'ssb:') {
link.target = u.translateFromURI(link.target) || link.target
}
var result = link.target && ref.parseLink(link.target)
if (result) {
result.name = link.label && link.label.replace(/^@/, '')
a.push(result)
} else if(bareFeedNames && link.target && link.target.startsWith('@')) {
a.push({link: link.target[0], name: link.target.substr(1)})
} else if(link.target && link.target.startsWith('#')) {
a.push({link: link.target})
} else if(emoji && link.emoji) {
a.push({emoji: true, name: link.label})
}
})
return a
}
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