104 lines
2.5 KiB
JavaScript
104 lines
2.5 KiB
JavaScript
// nip10.ts
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function parse(event) {
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const result = {
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reply: void 0,
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root: void 0,
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mentions: [],
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profiles: [],
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quotes: []
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};
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let maybeParent;
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let maybeRoot;
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for (let i = event.tags.length - 1; i >= 0; i--) {
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const tag = event.tags[i];
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if (tag[0] === "e" && tag[1]) {
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const [_, eTagEventId, eTagRelayUrl, eTagMarker, eTagAuthor] = tag;
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const eventPointer = {
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id: eTagEventId,
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relays: eTagRelayUrl ? [eTagRelayUrl] : [],
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author: eTagAuthor
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};
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if (eTagMarker === "root") {
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result.root = eventPointer;
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continue;
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}
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if (eTagMarker === "reply") {
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result.reply = eventPointer;
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continue;
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}
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if (eTagMarker === "mention") {
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result.mentions.push(eventPointer);
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continue;
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}
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if (!maybeParent) {
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maybeParent = eventPointer;
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} else {
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maybeRoot = eventPointer;
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}
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result.mentions.push(eventPointer);
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continue;
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}
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if (tag[0] === "q" && tag[1]) {
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const [_, eTagEventId, eTagRelayUrl] = tag;
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result.quotes.push({
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id: eTagEventId,
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relays: eTagRelayUrl ? [eTagRelayUrl] : []
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});
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}
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if (tag[0] === "p" && tag[1]) {
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result.profiles.push({
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pubkey: tag[1],
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relays: tag[2] ? [tag[2]] : []
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});
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continue;
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}
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}
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if (!result.root) {
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result.root = maybeRoot || maybeParent || result.reply;
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}
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if (!result.reply) {
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result.reply = maybeParent || result.root;
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}
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;
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[result.reply, result.root].forEach((ref) => {
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if (!ref)
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return;
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let idx = result.mentions.indexOf(ref);
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if (idx !== -1) {
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result.mentions.splice(idx, 1);
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}
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if (ref.author) {
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let author = result.profiles.find((p) => p.pubkey === ref.author);
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if (author && author.relays) {
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if (!ref.relays) {
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ref.relays = [];
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}
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author.relays.forEach((url) => {
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if (ref.relays?.indexOf(url) === -1)
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ref.relays.push(url);
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});
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author.relays = ref.relays;
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}
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}
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});
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result.mentions.forEach((ref) => {
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if (ref.author) {
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let author = result.profiles.find((p) => p.pubkey === ref.author);
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if (author && author.relays) {
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if (!ref.relays) {
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ref.relays = [];
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}
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author.relays.forEach((url) => {
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if (ref.relays.indexOf(url) === -1)
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ref.relays.push(url);
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});
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author.relays = ref.relays;
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}
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}
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});
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return result;
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}
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export {
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parse
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};
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