34 lines
1.4 KiB
JavaScript
34 lines
1.4 KiB
JavaScript
// @ts-check
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const reg = require("../../matrix/read-registration")
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const userRegex = reg.namespaces.users.map(u => new RegExp(u.regex))
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/**
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* Determine whether an event is the bridged representation of a discord message.
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* Such messages shouldn't be bridged again.
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* @param {string} sender
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*/
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function eventSenderIsFromDiscord(sender) {
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// If it's from a user in the bridge's namespace, then it originated from discord
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// This includes messages sent by the appservice's bot user, because that is what's used for webhooks
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// TODO: It would be nice if bridge system messages wouldn't trigger this check and could be bridged from matrix to discord, while webhook reflections would remain ignored...
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// TODO that only applies to the above todo: But you'd have to watch out for the /icon command, where the bridge bot would set the room avatar, and that shouldn't be reflected into the room a second time.
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if (userRegex.some(x => sender.match(x))) {
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return true
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}
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return false
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}
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/**
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* @param {string} mxc
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* @returns {string?}
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*/
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function getPublicUrlForMxc(mxc) {
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const avatarURLParts = mxc?.match(/^mxc:\/\/([^/]+)\/(\w+)$/)
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if (avatarURLParts) return `https://matrix.cadence.moe/_matrix/media/r0/download/${avatarURLParts[1]}/${avatarURLParts[2]}`
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else return null
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}
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module.exports.eventSenderIsFromDiscord = eventSenderIsFromDiscord
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module.exports.getPublicUrlForMxc = getPublicUrlForMxc
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