"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.leaveCoupleCallable = void 0;
const functions = __importStar(require("firebase-functions"));
const admin = __importStar(require("firebase-admin"));
/**
 * HTTPS callable that atomically unlinks a couple.
 *
 * The client cannot do this directly because Firestore rules prevent a user
 * from writing the partner's user document. The Admin SDK bypasses those rules.
 *
 * Steps:
 *  1. Verify the caller is a member of their current couple.
 *  2. Clear coupleId on both user docs (batch — atomic).
 *  3. Recursively delete the couple doc and all its subcollections.
 *
 * The existing onCoupleLeave Firestore trigger fires after step 2 and handles
 * partner notification, so we don't duplicate that here.
 */
exports.leaveCoupleCallable = functions.https.onCall(async (_data, context) => {
    var _a, _b, _c, _d;
    const callerId = (_a = context.auth) === null || _a === void 0 ? void 0 : _a.uid;
    if (!callerId) {
        throw new functions.https.HttpsError('unauthenticated', 'Must be signed in.');
    }
    const db = admin.firestore();
    const userDoc = await db.collection('users').doc(callerId).get();
    const coupleId = (_b = userDoc.data()) === null || _b === void 0 ? void 0 : _b.coupleId;
    if (!coupleId) {
        // Already unpaired — idempotent success.
        return { success: true };
    }
    const coupleRef = db.collection('couples').doc(coupleId);
    const coupleDoc = await coupleRef.get();
    if (!coupleDoc.exists) {
        // Couple doc gone — just clear caller's field.
        await db.collection('users').doc(callerId).update({ coupleId: null });
        return { success: true };
    }
    const userIds = ((_d = (_c = coupleDoc.data()) === null || _c === void 0 ? void 0 : _c.userIds) !== null && _d !== void 0 ? _d : []);
    if (!userIds.includes(callerId)) {
        throw new functions.https.HttpsError('permission-denied', 'Not a member of this couple.');
    }
    // Clear coupleId for all members atomically.
    const batch = db.batch();
    for (const uid of userIds) {
        batch.update(db.collection('users').doc(uid), { coupleId: null });
    }
    await batch.commit();
    // Recursively delete the couple document and every subcollection beneath it.
    await db.recursiveDelete(coupleRef);
    console.log(`[leaveCoupleCallable] user ${callerId} left couple ${coupleId}`);
    return { success: true };
});
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