discourse/plugins/chat/assets/javascripts/lib/discourse-markdown/chat-transcript.js

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import I18n from "I18n";
import { performEmojiUnescape } from "pretty-text/emoji";
let customMarkdownCookFn;
const chatTranscriptRule = {
tag: "chat",
replace: function (state, tagInfo, content) {
// shouldn't really happen but we don't want to break rendering if it does
if (!customMarkdownCookFn) {
return;
}
const options = state.md.options.discourse;
const [username, messageIdStart, messageTimeStart] =
(tagInfo.attrs.quote && tagInfo.attrs.quote.split(";")) || [];
const reactions = tagInfo.attrs.reactions;
const multiQuote = !!tagInfo.attrs.multiQuote;
const noLink = !!tagInfo.attrs.noLink;
const channelName = tagInfo.attrs.channel;
const channelId = tagInfo.attrs.channelId;
const channelLink = channelId
? options.getURL(`/chat/channel/${channelId}/-`)
: null;
if (!username || !messageIdStart || !messageTimeStart) {
return;
}
let wrapperDivToken = state.push("div_chat_transcript_wrap", "div", 1);
let wrapperClasses = ["chat-transcript"];
if (!!tagInfo.attrs.chained) {
wrapperClasses.push("chat-transcript-chained");
}
wrapperDivToken.attrs = [["class", wrapperClasses.join(" ")]];
wrapperDivToken.attrs.push(["data-message-id", messageIdStart]);
wrapperDivToken.attrs.push(["data-username", username]);
wrapperDivToken.attrs.push(["data-datetime", messageTimeStart]);
if (reactions) {
wrapperDivToken.attrs.push(["data-reactions", reactions]);
}
if (channelName) {
wrapperDivToken.attrs.push(["data-channel-name", channelName]);
if (multiQuote) {
let metaDivToken = state.push("div_chat_transcript_meta", "div", 1);
metaDivToken.attrs = [["class", "chat-transcript-meta"]];
const channelToken = state.push("html_inline", "", 0);
channelToken.content = I18n.t("chat.quote.original_channel", {
channel: channelName,
channelLink,
});
state.push("div_chat_transcript_meta", "div", -1);
}
}
if (channelId) {
wrapperDivToken.attrs.push(["data-channel-id", channelId]);
}
let userDivToken = state.push("div_chat_transcript_user", "div", 1);
userDivToken.attrs = [["class", "chat-transcript-user"]];
// start: user avatar
let avatarDivToken = state.push(
"div_chat_transcript_user_avatar",
"div",
1
);
avatarDivToken.attrs = [["class", "chat-transcript-user-avatar"]];
// server-side, we need to lookup the avatar from the username
let avatarImg;
if (options.lookupAvatar) {
avatarImg = options.lookupAvatar(username);
}
if (avatarImg) {
const avatarImgToken = state.push("html_inline", "", 0);
avatarImgToken.content = avatarImg;
}
state.push("div_chat_transcript_user_avatar", "div", -1);
// end: user avatar
// start: username
let usernameDivToken = state.push("div_chat_transcript_username", "div", 1);
usernameDivToken.attrs = [["class", "chat-transcript-username"]];
let displayName;
if (options.formatUsername) {
displayName = options.formatUsername(username);
} else {
displayName = username;
}
const usernameToken = state.push("html_inline", "", 0);
usernameToken.content = displayName;
state.push("div_chat_transcript_username", "div", -1);
// end: username
// start: time + link to message
let datetimeDivToken = state.push("div_chat_transcript_datetime", "div", 1);
datetimeDivToken.attrs = [["class", "chat-transcript-datetime"]];
// for some cases, like archiving, we don't want the link to the
// chat message because it will just result in a 404
// also handles the case where the quote doesnt contain
// enough data to build a valid channel/message link
if (noLink || !channelLink) {
let spanToken = state.push("span_open", "span", 1);
spanToken.attrs = [["title", messageTimeStart]];
spanToken.block = false;
spanToken = state.push("span_close", "span", -1);
spanToken.block = false;
} else {
let linkToken = state.push("link_open", "a", 1);
linkToken.attrs = [
["href", `${channelLink}?messageId=${messageIdStart}`],
["title", messageTimeStart],
];
linkToken.block = false;
linkToken = state.push("link_close", "a", -1);
linkToken.block = false;
}
state.push("div_chat_transcript_datetime", "div", -1);
// end: time + link to message
// start: channel link for !multiQuote
if (channelName && !multiQuote) {
let channelLinkToken = state.push("link_open", "a", 1);
channelLinkToken.attrs = [
["class", "chat-transcript-channel"],
["href", channelLink],
];
let inlineTextToken = state.push("html_inline", "", 0);
inlineTextToken.content = `#${channelName}`;
channelLinkToken = state.push("link_close", "a", -1);
channelLinkToken.block = false;
}
// end: channel link for !multiQuote
state.push("div_chat_transcript_user", "div", -1);
let messagesToken = state.push("div_chat_transcript_messages", "div", 1);
messagesToken.attrs = [["class", "chat-transcript-messages"]];
// rendering chat message content with limited markdown rule subset
const token = state.push("html_raw", "", 1);
token.content = customMarkdownCookFn(content);
state.push("html_raw", "", -1);
if (reactions) {
let emojiHtmlCache = {};
let reactionsToken = state.push(
"div_chat_transcript_reactions",
"div",
1
);
reactionsToken.attrs = [["class", "chat-transcript-reactions"]];
reactions.split(";").forEach((reaction) => {
const split = reaction.split(":");
const emoji = split[0];
const usernames = split[1].split(",");
const reactToken = state.push("div_chat_transcript_reaction", "div", 1);
reactToken.attrs = [["class", "chat-transcript-reaction"]];
const emojiToken = state.push("html_inline", "", 0);
if (!emojiHtmlCache[emoji]) {
emojiHtmlCache[emoji] = performEmojiUnescape(`:${emoji}:`, {
getURL: options.getURL,
emojiSet: options.emojiSet,
emojiCDNUrl: options.emojiCDNUrl,
enableEmojiShortcuts: options.enableEmojiShortcuts,
inlineEmoji: options.inlineEmoji,
lazy: true,
});
}
emojiToken.content = `${
emojiHtmlCache[emoji]
} ${usernames.length.toString()}`;
state.push("div_chat_transcript_reaction", "div", -1);
});
state.push("div_chat_transcript_reactions", "div", -1);
}
state.push("div_chat_transcript_messages", "div", -1);
state.push("div_chat_transcript_wrap", "div", -1);
return true;
},
};
export function setup(helper) {
helper.allowList([
"div[class=chat-transcript]",
"div[class=chat-transcript chat-transcript-chained]",
"div.chat-transcript-meta",
"div.chat-transcript-user",
"div.chat-transcript-username",
"div.chat-transcript-user-avatar",
"div.chat-transcript-messages",
"div.chat-transcript-datetime",
"div.chat-transcript-reactions",
"div.chat-transcript-reaction",
"span[title]",
"div[data-message-id]",
"div[data-channel-name]",
"div[data-channel-id]",
"div[data-username]",
"div[data-datetime]",
"a.chat-transcript-channel",
]);
helper.registerOptions((opts, siteSettings) => {
opts.features["chat-transcript"] = !!siteSettings.chat_enabled;
});
helper.registerPlugin((md) => {
if (md.options.discourse.features["chat-transcript"]) {
md.block.bbcode.ruler.push("chat-transcript", chatTranscriptRule);
}
});
helper.buildCookFunction((opts, generateCookFunction) => {
if (!opts.discourse.additionalOptions) {
return;
}
const chatAdditionalOpts = opts.discourse.additionalOptions.chat;
// we need to be able to quote images from chat, but the image rule is usually
// banned for chat messages
const markdownItRules =
chatAdditionalOpts.limited_pretty_text_markdown_rules.concat("image");
generateCookFunction(
{
featuresOverride: chatAdditionalOpts.limited_pretty_text_features,
markdownItRules,
},
(customCookFn) => {
customMarkdownCookFn = customCookFn;
}
);
});
}