50 lines
1.2 KiB
TypeScript
50 lines
1.2 KiB
TypeScript
const ENVELOPE_PREFIX = /^\[([^\]]+)\]\s*/;
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const ENVELOPE_CHANNELS = [
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"WebChat",
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"WhatsApp",
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"Telegram",
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"Signal",
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"Slack",
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"Discord",
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"Google Chat",
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"iMessage",
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"Teams",
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"Matrix",
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"Zalo",
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"Zalo Personal",
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"BlueBubbles",
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];
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const MESSAGE_ID_LINE = /^\s*\[message_id:\s*[^\]]+\]\s*$/i;
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function looksLikeEnvelopeHeader(header: string): boolean {
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if (/\d{4}-\d{2}-\d{2}T\d{2}:\d{2}Z\b/.test(header)) {
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return true;
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}
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if (/\d{4}-\d{2}-\d{2} \d{2}:\d{2}\b/.test(header)) {
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return true;
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}
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return ENVELOPE_CHANNELS.some((label) => header.startsWith(`${label} `));
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}
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export function stripEnvelope(text: string): string {
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const match = text.match(ENVELOPE_PREFIX);
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if (!match) {
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return text;
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}
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const header = match[1] ?? "";
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if (!looksLikeEnvelopeHeader(header)) {
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return text;
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}
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return text.slice(match[0].length);
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}
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export function stripMessageIdHints(text: string): string {
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if (!text.includes("[message_id:")) {
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return text;
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}
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const lines = text.split(/\r?\n/);
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const filtered = lines.filter((line) => !MESSAGE_ID_LINE.test(line));
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return filtered.length === lines.length ? text : filtered.join("\n");
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}
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