"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.dedupeUsersByEmail = dedupeUsersByEmail;
const drive_1 = require("../services/drive");
/**
 * Scans cached users. For every email that appears more than once,
 * keeps the OLDEST account (lowest id / earliest createdAt) and queues
 * the rest for deletion (cache + Drive sync). Returns a summary.
 */
async function dedupeUsersByEmail() {
    const users = await (0, drive_1.getAllUsers)();
    const records = [];
    for (const u of users) {
        if (!u.email)
            continue;
        const folderId = await (0, drive_1.getUserFolder)(u.username);
        if (folderId)
            records.push({ folderId, data: u });
    }
    const groups = new Map();
    for (const r of records) {
        const key = r.data.email.trim().toLowerCase();
        if (!groups.has(key))
            groups.set(key, []);
        groups.get(key).push(r);
    }
    const removed = [];
    for (const [email, list] of groups) {
        if (list.length <= 1)
            continue;
        list.sort((a, b) => {
            const ta = a.data.createdAt ?? a.data.id;
            const tb = b.data.createdAt ?? b.data.id;
            return ta - tb;
        });
        const toDelete = list.slice(1);
        for (const dup of toDelete) {
            try {
                await (0, drive_1.deleteUserFolder)(dup.folderId);
                removed.push({ email, username: dup.data.username });
                console.log(`[dedupe] removed duplicate ${dup.data.username} (${email})`);
            }
            catch (e) {
                console.error(`[dedupe] failed to delete ${dup.data.username}:`, e.message);
            }
        }
    }
    return { scanned: records.length, duplicatesRemoved: removed.length, removed };
}