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diff --git a/src/components/emoji_input/suggestor.js b/src/components/emoji_input/suggestor.js
index adaa879e3c..e746dcd764 100644
--- a/src/components/emoji_input/suggestor.js
+++ b/src/components/emoji_input/suggestor.js
@@ -1,131 +1,132 @@
/**
* suggest - generates a suggestor function to be used by emoji-input
* data: object providing source information for specific types of suggestions:
* data.emoji - optional, an array of all emoji available i.e.
* (getters.standardEmojiList + state.instance.customEmoji)
* data.users - optional, an array of all known users
* updateUsersList - optional, a function to search and append to users
*
* Depending on data present one or both (or none) can be present, so if field
* doesn't support user linking you can just provide only emoji.
*/
export default data => {
const emojiCurry = suggestEmoji(data.emoji)
const usersCurry = data.store && suggestUsers(data.store)
return (input, nameKeywordLocalizer) => {
const firstChar = input[0]
if (firstChar === ':' && data.emoji) {
return emojiCurry(input, nameKeywordLocalizer)
}
if (firstChar === '@' && usersCurry) {
return usersCurry(input)
}
return []
}
}
export const suggestEmoji = emojis => (input, nameKeywordLocalizer) => {
const noPrefix = input.toLowerCase().substr(1)
return emojis
.map(emoji => ({ ...emoji, ...nameKeywordLocalizer(emoji) }))
.filter((emoji) => (emoji.names.concat(emoji.keywords)).filter(kw => kw.toLowerCase().match(noPrefix)).length)
.map(k => {
let score = 0
// An exact match always wins
score += Math.max(...k.names.map(name => name.toLowerCase() === noPrefix ? 200 : 0), 0)
// Prioritize custom emoji a lot
score += k.imageUrl ? 100 : 0
// Prioritize prefix matches somewhat
score += Math.max(...k.names.map(kw => kw.toLowerCase().startsWith(noPrefix) ? 10 : 0), 0)
// Sort by length
score -= k.displayText.length
k.score = score
return k
})
.sort((a, b) => {
// Break ties alphabetically
const alphabetically = a.displayText > b.displayText ? 0.5 : -0.5
return b.score - a.score + alphabetically
})
}
export const suggestUsers = ({ dispatch, state }) => {
// Keep some persistent values in closure, most importantly for the
// custom debounce to work. Lodash debounce does not return a promise.
let suggestions = []
let previousQuery = ''
let timeout = null
let cancelUserSearch = null
const userSearch = (query) => dispatch('searchUsers', { query })
const debounceUserSearch = (query) => {
cancelUserSearch && cancelUserSearch()
return new Promise((resolve, reject) => {
timeout = setTimeout(() => {
userSearch(query).then(resolve).catch(reject)
}, 300)
cancelUserSearch = () => {
clearTimeout(timeout)
resolve([])
}
})
}
return async input => {
const noPrefix = input.toLowerCase().substr(1)
if (previousQuery === noPrefix) return suggestions
suggestions = []
previousQuery = noPrefix
// Fetch more and wait, don't fetch if there's the 2nd @ because
// the backend user search can't deal with it.
// Reference semantics make it so that we get the updated data after
// the await.
if (!noPrefix.includes('@')) {
await debounceUserSearch(noPrefix)
}
const newSuggestions = state.users.users.filter(
user =>
- user.screen_name.toLowerCase().startsWith(noPrefix) ||
- user.name.toLowerCase().startsWith(noPrefix)
+ user.screen_name && user.name && (
+ user.screen_name.toLowerCase().startsWith(noPrefix) ||
+ user.name.toLowerCase().startsWith(noPrefix))
).slice(0, 20).sort((a, b) => {
let aScore = 0
let bScore = 0
// Matches on screen name (i.e. user@instance) makes a priority
aScore += a.screen_name.toLowerCase().startsWith(noPrefix) ? 2 : 0
bScore += b.screen_name.toLowerCase().startsWith(noPrefix) ? 2 : 0
// Matches on name takes second priority
aScore += a.name.toLowerCase().startsWith(noPrefix) ? 1 : 0
bScore += b.name.toLowerCase().startsWith(noPrefix) ? 1 : 0
const diff = (bScore - aScore) * 10
// Then sort alphabetically
const nameAlphabetically = a.name > b.name ? 1 : -1
const screenNameAlphabetically = a.screen_name > b.screen_name ? 1 : -1
return diff + nameAlphabetically + screenNameAlphabetically
/* eslint-disable camelcase */
}).map((user) => ({
user,
displayText: user.screen_name_ui,
detailText: user.name,
imageUrl: user.profile_image_url_original,
replacement: '@' + user.screen_name + ' '
}))
/* eslint-enable camelcase */
suggestions = newSuggestions || []
return suggestions
}
}

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