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import Vue from 'vue'
import { unescape, flattenDeep } from 'lodash'
import { convertHtml, getTagName, processTextForEmoji, getAttrs } from 'src/services/mini_html_converter/mini_html_converter.service.js'
import { processHtml } from 'src/services/tiny_post_html_processor/tiny_post_html_processor.service.js'
import StillImage from 'src/components/still-image/still-image.vue'
import MentionLink from 'src/components/mention_link/mention_link.vue'
import './rich_content.scss'
export default Vue.component('RichContent', {
name: 'RichContent',
props: {
// Original html content
html: {
required: true,
type: String
},
// Emoji object, as in status.emojis, note the "s" at the end...
emoji: {
required: true,
type: Array
},
// Whether to handle links or not (posts: yes, everything else: no)
handleLinks: {
required: false,
type: Boolean,
default: false
},
// Meme arrows
greentext: {
required: false,
type: Boolean,
default: false
}
},
render (h) {
// Pre-process HTML
const html = this.greentext ? addGreentext(this.html) : this.html
const renderImage = (tag) => {
return <StillImage
{...{ attrs: getAttrs(tag) }}
class="img"
/>
}
const renderMention = (attrs, children, encounteredText) => {
return <MentionLink
url={attrs.href}
content={flattenDeep(children).join('')}
firstMention={!encounteredText}
/>
}
// We stop treating mentions as "first" ones when we encounter
// non-whitespace text
let encounteredText = false
// Processor to use with mini_html_converter
const processItem = (item) => {
// Handle text nodes - just add emoji
if (typeof item === 'string') {
const emptyText = item.trim() === ''
if (emptyText) {
return encounteredText ? item : item.trim()
}
let unescapedItem = unescape(item)
if (!encounteredText) {
unescapedItem = unescapedItem.trimStart()
encounteredText = true
}
if (item.includes(':')) {
return processTextForEmoji(
unescapedItem,
this.emoji,
({ shortcode, url }) => {
return <StillImage
class="emoji img"
src={url}
title={`:${shortcode}:`}
alt={`:${shortcode}:`}
/>
}
)
} else {
return unescapedItem
}
}
// Handle tag nodes
if (Array.isArray(item)) {
const [opener, children] = item
const Tag = getTagName(opener)
switch (Tag) {
case 'img': // replace images with StillImage
return renderImage(opener)
case 'a': // replace mentions with MentionLink
if (!this.handleLinks) break
const attrs = getAttrs(opener)
if (attrs['class'] && attrs['class'].includes('mention')) {
return renderMention(attrs, children, encounteredText)
} else {
attrs.target = '_blank'
return <a {...{ attrs }}>
{ children.map(processItem) }
</a>
}
}
// Render tag as is
if (children !== undefined) {
return <Tag {...{ attrs: getAttrs(opener) }}>
{ children.map(processItem) }
</Tag>
} else {
return <Tag/>
}
}
}
return <span class="RichContent">
{ this.$slots.prefix }
{ convertHtml(html).map(processItem) }
{ this.$slots.suffix }
</span>
}
})
export const addGreentext = (html) => {
try {
if (html.includes('>')) {
// This checks if post has '>' at the beginning, excluding mentions so that @mention >impying works
return processHtml(html, (string) => {
if (
string.includes('>') && string
.replace(/<[^>]+?>/gi, '') // remove all tags
.replace(/@\w+/gi, '') // remove mentions (even failed ones)
.trim()
.startsWith('>')
) {
return `<span class='greentext'>${string}</span>`
} else {
return string
}
})
} else {
return html
}
} catch (e) {
console.error('Failed to process status html', e)
return html
}
}
export const getHeadTailLinks = (html) => {
// Exported object properties
const firstMentions = [] // Mentions that appear in the beginning of post body
const lastTags = [] // Tags that appear at the end of post body
const writtenMentions = [] // All mentions that appear in post body
const writtenTags = [] // All tags that appear in post body
let encounteredText = false
let processingFirstMentions = true
let index = 0 // unique index for vue "tag" property
const getLinkData = (attrs, children, index) => {
return {
index,
url: attrs.href,
hashtag: attrs['data-tag'],
content: flattenDeep(children).join('')
}
}
// Processor to use with mini_html_converter
const processItem = (item) => {
// Handle text nodes - stop treating mentions as "first" when text encountered
if (typeof item === 'string') {
const emptyText = item.trim() === ''
if (emptyText) return
if (!encounteredText) {
encounteredText = true
processingFirstMentions = false
}
// Encountered text? That means tags we've been collectings aren't "last"!
lastTags.splice(0)
return
}
// Handle tag nodes
if (Array.isArray(item)) {
const [opener, children] = item
const Tag = getTagName(opener)
if (Tag !== 'a') return children && children.forEach(processItem)
const attrs = getAttrs(opener)
if (attrs['class']) {
const linkData = getLinkData(attrs, children, index++)
if (attrs['class'].includes('mention')) {
if (processingFirstMentions) {
firstMentions.push(linkData)
}
writtenMentions.push(linkData)
} else if (attrs['class'].includes('hashtag')) {
lastTags.push(linkData)
writtenTags.push(linkData)
}
return // Stop processing, we don't care about link's contents
}
children && children.forEach(processItem)
}
}
convertHtml(html).forEach(processItem)
return { firstMentions, writtenMentions, writtenTags, lastTags }
}
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