-- ============================================================
-- 修复脚本：为有多设备但无家庭组的用户补建家庭组
-- 影响用户数：30
-- 每个用户：2 个设备，0 个家庭组
-- 执行前请先备份！
-- ============================================================

-- ============================================================
-- Step 0: 确认受影响数据（只读，不做任何修改）
-- ============================================================
SELECT
    d.user_id,
    COUNT(*) as device_count,
    GROUP_CONCAT(d.id ORDER BY d.id) as device_ids
FROM user_device d
LEFT JOIN user_family_member fm ON fm.user_id = d.user_id AND fm.status = 1
WHERE d.enabled = 1 AND fm.id IS NULL
GROUP BY d.user_id
HAVING device_count > 1
ORDER BY d.user_id;

-- 预期结果：30 行

-- ============================================================
-- Step 1: 为每个用户创建 user_family（家庭组）
-- owner_user_id = user_id, max_members = 2, status = 1(active)
-- ============================================================
INSERT INTO user_family (owner_user_id, max_members, status, created_at, updated_at)
SELECT
    d.user_id,
    2,                          -- max_members = 2（当前都是 2 设备）
    1,                          -- status = active
    MIN(d.created_at),          -- 用最早设备的创建时间
    NOW()
FROM user_device d
LEFT JOIN user_family_member fm ON fm.user_id = d.user_id AND fm.status = 1
LEFT JOIN user_family f ON f.owner_user_id = d.user_id AND f.deleted_at IS NULL
WHERE d.enabled = 1
  AND fm.id IS NULL             -- 没有 active 家庭成员记录
  AND f.id IS NULL              -- 没有已存在的家庭
GROUP BY d.user_id
HAVING COUNT(*) > 1;

-- 预期影响：30 行

-- ============================================================
-- Step 2: 为每个用户创建 user_family_member（owner 身份）
-- role = 1(owner), status = 1(active), join_source = 'data_fix'
-- ============================================================
INSERT INTO user_family_member (family_id, user_id, role, status, join_source, joined_at, created_at, updated_at)
SELECT
    f.id,                       -- 刚创建的 family_id
    f.owner_user_id,            -- user_id
    1,                          -- role = owner
    1,                          -- status = active
    'data_fix',                 -- 标记来源，方便追溯
    f.created_at,               -- joined_at = family 创建时间
    NOW(),
    NOW()
FROM user_family f
LEFT JOIN user_family_member fm ON fm.user_id = f.owner_user_id AND fm.status = 1
WHERE fm.id IS NULL             -- 还没有 active 家庭成员记录
  AND f.deleted_at IS NULL
  AND f.owner_user_id IN (
    -- 只处理我们目标用户
    SELECT d.user_id
    FROM user_device d
    WHERE d.enabled = 1
    GROUP BY d.user_id
    HAVING COUNT(*) > 1
  );

-- 预期影响：30 行

-- ============================================================
-- Step 3: 验证修复结果
-- ============================================================

-- 3a. 确认所有多设备用户都有了家庭组
SELECT
    d.user_id,
    COUNT(DISTINCT d.id) as device_count,
    f.id as family_id,
    f.max_members,
    fm.role,
    fm.status as member_status,
    fm.join_source
FROM user_device d
JOIN user_family f ON f.owner_user_id = d.user_id AND f.deleted_at IS NULL
JOIN user_family_member fm ON fm.user_id = d.user_id AND fm.status = 1
WHERE d.enabled = 1
  AND fm.join_source = 'data_fix'
GROUP BY d.user_id, f.id, f.max_members, fm.role, fm.status, fm.join_source
ORDER BY d.user_id;

-- 预期结果：30 行，每行 device_count=2, role=1, member_status=1

-- 3b. 确认没有遗漏（多设备无家庭组的用户应该为 0）
SELECT COUNT(*) as remaining_orphans
FROM (
    SELECT d.user_id
    FROM user_device d
    LEFT JOIN user_family_member fm ON fm.user_id = d.user_id AND fm.status = 1
    WHERE d.enabled = 1 AND fm.id IS NULL
    GROUP BY d.user_id
    HAVING COUNT(*) > 1
) orphans;

-- 预期结果：0