93 lines
2.5 KiB
JavaScript
93 lines
2.5 KiB
JavaScript
function createWorkSelection({ limit = 50, onChange = () => {} } = {}) {
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const maximum = Number.isInteger(limit) && limit > 0 ? limit : 50;
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let active = false;
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const selected = new Set();
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function identity(item) {
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if (!item) return '';
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const kind = item.is_review ? 'review' : (item.kind || 'work');
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const number = Number.isInteger(item.number) ? item.number : '';
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const notification = Number.isInteger(item.notification_id) ? item.notification_id : '';
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return [kind, item.repository || '', number, notification].join(':');
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}
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function changed() {
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const state = snapshot();
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onChange(state);
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return state;
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}
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function start() {
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active = true;
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selected.clear();
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return changed();
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}
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function cancel() {
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active = false;
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selected.clear();
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return changed();
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}
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function select(item) {
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if (!active) return 'inactive';
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const id = identity(item);
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if (!id) return 'invalid';
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if (selected.has(id)) return 'selected';
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if (selected.size >= maximum) return 'limit';
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selected.add(id);
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changed();
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return 'selected';
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}
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function toggle(item) {
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if (!active) return 'inactive';
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const id = identity(item);
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if (!id) return 'invalid';
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if (selected.has(id)) {
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selected.delete(id);
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changed();
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return 'removed';
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}
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return select(item);
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}
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function selectMany(items) {
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if (!active) return { status: 'inactive', added: 0, count: selected.size, limit: maximum };
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let added = 0;
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let capped = false;
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for (const item of items || []) {
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const id = identity(item);
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if (!id || selected.has(id)) continue;
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if (selected.size >= maximum) {
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capped = true;
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break;
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}
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selected.add(id);
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added += 1;
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}
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changed();
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return { status: capped ? 'limit' : 'selected', added, count: selected.size, limit: maximum };
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}
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function clear() {
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if (!active) return snapshot();
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selected.clear();
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return changed();
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}
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function retain(items) {
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const retained = new Set((items || []).map(identity).filter(Boolean));
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Array.from(selected).forEach(id => { if (!retained.has(id)) selected.delete(id); });
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return changed();
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}
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function snapshot() {
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return { active, count: selected.size, ids: Array.from(selected) };
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}
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return { identity, start, cancel, select, selectMany, clear, toggle, retain, snapshot, limit: maximum };
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}
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if (typeof module !== 'undefined' && module.exports) module.exports = createWorkSelection;
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