59 lines
2.1 KiB
JavaScript
59 lines
2.1 KiB
JavaScript
function mergeChecklistConflict({ baseBody, localBody, remoteBody }) {
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const taskPattern = /^(\s*[-*+]\s+\[)([ xX])(\]\s+)(.*)$/;
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function tasks(body) {
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const entries = [];
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String(body || '').split('\n').forEach((line, lineIndex) => {
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const match = line.match(taskPattern);
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if (!match) return;
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const label = match[4].trim();
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const key = label.replace(/\s+/g, ' ').toLocaleLowerCase();
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if (!key) return;
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entries.push({ key, label, checked: match[2].toLowerCase() === 'x', lineIndex, match });
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});
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return entries;
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}
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function grouped(entries) {
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const result = new Map();
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entries.forEach(entry => result.set(entry.key, [...(result.get(entry.key) || []), entry]));
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return result;
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}
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const base = grouped(tasks(baseBody));
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const local = grouped(tasks(localBody));
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const remoteEntries = tasks(remoteBody);
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const remote = grouped(remoteEntries);
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const changes = [];
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const conflicts = [];
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for (const [key, baseMatches] of base) {
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const localMatches = local.get(key) || [];
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if (baseMatches.length !== 1 || localMatches.length !== 1) continue;
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if (baseMatches[0].checked === localMatches[0].checked) continue;
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const remoteMatches = remote.get(key) || [];
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if (remoteMatches.length !== 1) {
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conflicts.push({
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label: baseMatches[0].label,
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reason: remoteMatches.length ? 'ambiguous' : 'missing',
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});
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continue;
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}
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changes.push({ label: remoteMatches[0].label, checked: localMatches[0].checked });
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}
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if (conflicts.length) return { body: null, changes, conflicts };
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const desired = new Map(changes.map(change => [
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change.label.replace(/\s+/g, ' ').toLocaleLowerCase(), change.checked,
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]));
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const lines = String(remoteBody || '').split('\n');
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remoteEntries.forEach(entry => {
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if (!desired.has(entry.key)) return;
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const marker = desired.get(entry.key) ? 'x' : ' ';
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lines[entry.lineIndex] = entry.match[1] + marker + entry.match[3] + entry.match[4];
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});
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return { body: lines.join('\n'), changes, conflicts: [] };
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}
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if (typeof module !== 'undefined') module.exports = mergeChecklistConflict;
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