package pub

import (
	"context"
	"errors"
	"fmt"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"github.com/zeromicro/go-zero/core/stores/redis"
	"github.com/zeromicro/go-zero/core/stores/sqlx"
	"go.uber.org/mock/gomock"
	"golang.org/x/crypto/bcrypt"
	permModel "perms-system-server/internal/model/perm"
	productModel "perms-system-server/internal/model/product"
	"perms-system-server/internal/response"
	"perms-system-server/internal/testutil"
	"perms-system-server/internal/testutil/mocks"
	"perms-system-server/internal/types"
	"testing"
	"time"
)

func insertSyncTestProduct(t *testing.T, ctx context.Context, code, appKey, appSecret string, status int64) (int64, func()) {
	t.Helper()
	svcCtx := newTestSvcCtx()
	conn := testutil.GetTestSqlConn()
	now := time.Now().Unix()
	hashedSecret, err := bcrypt.GenerateFromPassword([]byte(appSecret), bcrypt.MinCost)
	require.NoError(t, err)
	res, err := svcCtx.SysProductModel.Insert(ctx, &productModel.SysProduct{
		Code:       code,
		Name:       code,
		AppKey:     appKey,
		AppSecret:  string(hashedSecret),
		Status:     status,
		CreateTime: now,
		UpdateTime: now,
	})
	require.NoError(t, err)
	id, _ := res.LastInsertId()
	cleanup := func() {
		testutil.CleanTable(ctx, conn, "`sys_product`", id)
	}
	return id, cleanup
}

// TC-0036: 全部新增
func TestSyncPerms_AllNew(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	conn := testutil.GetTestSqlConn()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)
	t.Cleanup(func() { testutil.CleanTableByField(ctx, conn, "`sys_perm`", "productCode", pc) })

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms: []types.SyncPermItem{
			{Code: "perm_a", Name: "Perm A", Remark: "remark a"},
			{Code: "perm_b", Name: "Perm B"},
			{Code: "perm_c", Name: "Perm C"},
		},
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Equal(t, int64(3), resp.Added)
	assert.Equal(t, int64(0), resp.Updated)
	assert.Equal(t, int64(0), resp.Disabled)
}

// TC-0037: 更新已有(名称变更)
func TestSyncPerms_UpdateExisting(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	conn := testutil.GetTestSqlConn()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()
	now := time.Now().Unix()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)

	permRes, err := svcCtx.SysPermModel.Insert(ctx, &permModel.SysPerm{
		ProductCode: pc, Name: "Old Name", Code: "upd_code", Remark: "old remark", Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	permId, _ := permRes.LastInsertId()
	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_perm`", permId) })

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms: []types.SyncPermItem{
			{Code: "upd_code", Name: "New Name", Remark: "new remark"},
		},
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Equal(t, int64(0), resp.Added)
	assert.Equal(t, int64(1), resp.Updated)
	assert.Equal(t, int64(0), resp.Disabled)

	updated, err := svcCtx.SysPermModel.FindOne(ctx, permId)
	require.NoError(t, err)
	assert.Equal(t, "New Name", updated.Name)
	assert.Equal(t, "new remark", updated.Remark)
	assert.Equal(t, int64(1), updated.Status)
}

// TC-0038: 无变化
func TestSyncPerms_NoChanges(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	conn := testutil.GetTestSqlConn()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()
	now := time.Now().Unix()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)

	permRes, err := svcCtx.SysPermModel.Insert(ctx, &permModel.SysPerm{
		ProductCode: pc, Name: "Same Name", Code: "same_code", Remark: "same remark", Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	permId, _ := permRes.LastInsertId()
	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_perm`", permId) })

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms: []types.SyncPermItem{
			{Code: "same_code", Name: "Same Name", Remark: "same remark"},
		},
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Equal(t, int64(0), resp.Added)
	assert.Equal(t, int64(0), resp.Updated)
	assert.Equal(t, int64(0), resp.Disabled)
}

// TC-0039: 禁用权限重启
func TestSyncPerms_ReEnableDisabled(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	conn := testutil.GetTestSqlConn()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()
	now := time.Now().Unix()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)

	permRes, err := svcCtx.SysPermModel.Insert(ctx, &permModel.SysPerm{
		ProductCode: pc, Name: "Disabled Perm", Code: "dis_code", Remark: "", Status: 2, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	permId, _ := permRes.LastInsertId()
	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_perm`", permId) })

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms: []types.SyncPermItem{
			{Code: "dis_code", Name: "Disabled Perm"},
		},
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Equal(t, int64(0), resp.Added)
	assert.Equal(t, int64(1), resp.Updated)

	reEnabled, err := svcCtx.SysPermModel.FindOne(ctx, permId)
	require.NoError(t, err)
	assert.Equal(t, int64(1), reEnabled.Status)
}

// TC-0040: 移除不在列表的权限
func TestSyncPerms_DisableNotInList(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	conn := testutil.GetTestSqlConn()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()
	now := time.Now().Unix()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)

	keepCode := testutil.UniqueId()
	removeCode := testutil.UniqueId()

	keepRes, err := svcCtx.SysPermModel.Insert(ctx, &permModel.SysPerm{
		ProductCode: pc, Name: "Keep", Code: keepCode, Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	keepId, _ := keepRes.LastInsertId()

	removeRes, err := svcCtx.SysPermModel.Insert(ctx, &permModel.SysPerm{
		ProductCode: pc, Name: "Remove", Code: removeCode, Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	removeId, _ := removeRes.LastInsertId()

	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_perm`", keepId, removeId) })

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms: []types.SyncPermItem{
			{Code: keepCode, Name: "Keep"},
		},
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Equal(t, int64(0), resp.Added)
	assert.Equal(t, int64(1), resp.Disabled)

	disabled, err := svcCtx.SysPermModel.FindOne(ctx, removeId)
	require.NoError(t, err)
	assert.Equal(t, int64(2), disabled.Status)

	kept, err := svcCtx.SysPermModel.FindOne(ctx, keepId)
	require.NoError(t, err)
	assert.Equal(t, int64(1), kept.Status)
}

// TC-0041: 空perms数组应被拒绝
func TestSyncPerms_EmptyPermsRejected(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms:     []types.SyncPermItem{},
	})
	require.Nil(t, resp)
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Contains(t, codeErr.Error(), "权限列表不能为空")
}

// TC-0043: appKey无效
func TestSyncPerms_InvalidAppKey(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    "nonexistent_key_" + testutil.UniqueId(),
		AppSecret: "whatever",
		Perms:     []types.SyncPermItem{{Code: "x", Name: "x"}},
	})
	require.Nil(t, resp)
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 401, codeErr.Code())
	assert.Equal(t, "无效的appKey", codeErr.Error())
}

// TC-0044: appSecret错误
func TestSyncPerms_WrongAppSecret(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: "wrong_secret",
		Perms:     []types.SyncPermItem{{Code: "x", Name: "x"}},
	})
	require.Nil(t, resp)
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 401, codeErr.Code())
	assert.Equal(t, "appSecret验证失败", codeErr.Error())
}

// TC-0045: 产品已禁用
func TestSyncPerms_ProductDisabled(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 2)
	t.Cleanup(cleanProduct)

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms:     []types.SyncPermItem{{Code: "x", Name: "x"}},
	})
	require.Nil(t, resp)
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 403, codeErr.Code())
	assert.Equal(t, "产品已被禁用", codeErr.Error())
}

// TC-0046: 大批量(1000条)
func TestSyncPerms_LargeBatch1000(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	conn := testutil.GetTestSqlConn()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)
	t.Cleanup(func() { testutil.CleanTableByField(ctx, conn, "`sys_perm`", "productCode", pc) })

	perms := make([]types.SyncPermItem, 1000)
	for i := 0; i < 1000; i++ {
		perms[i] = types.SyncPermItem{
			Code: fmt.Sprintf("batch_%s_%d", pc, i),
			Name: fmt.Sprintf("Perm_%d", i),
		}
	}

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms:     perms,
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Equal(t, int64(1000), resp.Added)
	assert.Equal(t, int64(0), resp.Updated)
	assert.Equal(t, int64(0), resp.Disabled)
}

// TC-0047: 重复code去重
func TestSyncPerms_DeduplicateCodes(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	conn := testutil.GetTestSqlConn()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)
	t.Cleanup(func() { testutil.CleanTableByField(ctx, conn, "`sys_perm`", "productCode", pc) })

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms: []types.SyncPermItem{
			{Code: "dup_code", Name: "Perm First"},
			{Code: "dup_code", Name: "Perm Duplicate"},
			{Code: "unique_code", Name: "Unique"},
		},
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Equal(t, int64(2), resp.Added, "重复code应被去重，只添加2条")
}

// TC-0042: 验证disabled返回值
func TestSyncPerms_VerifyDisabledCount(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	conn := testutil.GetTestSqlConn()
	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()
	now := time.Now().Unix()

	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)

	var permIds []int64
	for i := 0; i < 5; i++ {
		res, err := svcCtx.SysPermModel.Insert(ctx, &permModel.SysPerm{
			ProductCode: pc, Name: fmt.Sprintf("p%d", i), Code: fmt.Sprintf("code_%s_%d", pc, i),
			Status: 1, CreateTime: now, UpdateTime: now,
		})
		require.NoError(t, err)
		id, _ := res.LastInsertId()
		permIds = append(permIds, id)
	}
	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_perm`", permIds...) })

	logic := NewSyncPermsLogic(ctx, svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey:    appKey,
		AppSecret: appSecret,
		Perms: []types.SyncPermItem{
			{Code: fmt.Sprintf("code_%s_0", pc), Name: "p0"},
			{Code: fmt.Sprintf("code_%s_1", pc), Name: "p1"},
		},
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Equal(t, int64(0), resp.Added)
	assert.Equal(t, int64(3), resp.Disabled)
}

func TestSyncPerms_LockByCodeTxNotFound_MapsToHTTP404(t *testing.T) {
	ctrl := gomock.NewController(t)
	defer ctrl.Finish()

	hashedSecret, err := bcrypt.GenerateFromPassword([]byte("m2_secret"), bcrypt.MinCost)
	require.NoError(t, err)

	mockProduct := mocks.NewMockSysProductModel(ctrl)
	mockProduct.EXPECT().FindOneByAppKey(gomock.Any(), "m2_key").
		Return(&productModel.SysProduct{
			Id: 1, Code: "m2_prod", AppKey: "m2_key",
			AppSecret: string(hashedSecret), Status: 1,
		}, nil)
	// 关键：tx 内 LockByCodeTx 拿到 ErrNotFound → service 返回 SyncPermsError{Code:404, "产品不存在"}。
	mockProduct.EXPECT().LockByCodeTx(gomock.Any(), gomock.Any(), "m2_prod").
		Return((*productModel.SysProduct)(nil), sqlx.ErrNotFound)

	mockPerm := mocks.NewMockSysPermModel(ctrl)
	mockPerm.EXPECT().TransactCtx(gomock.Any(), gomock.Any()).
		DoAndReturn(func(ctx context.Context, fn func(context.Context, sqlx.Session) error) error {
			return fn(ctx, nil)
		})

	svcCtx := mocks.NewMockServiceContext(mocks.MockModels{Product: mockProduct, Perm: mockPerm})

	logic := NewSyncPermsLogic(context.Background(), svcCtx)
	resp, err := logic.SyncPerms(&types.SyncPermsReq{
		AppKey: "m2_key", AppSecret: "m2_secret",
		Perms: []types.SyncPermItem{{Code: "p1", Name: "P1"}},
	})

	assert.Nil(t, resp)
	require.Error(t, err, "tx 内产品消失必须返回错误")

	var ce *response.CodeError
	require.ErrorAs(t, err, &ce,
		"必须映射成 response.CodeError 结构化错误，不能透传 SyncPermsError 原文")
	assert.Equal(t, 404, ce.Code(),
		"SyncPermsError{Code:404} 必须落到 HTTP 404 分支；若仍是 500 说明 syncPermsLogic 的 switch 缺少 404 case")
	assert.Equal(t, "产品不存在", ce.Error(), "保留原始语义文案")
}

// TC-0980（负值域对称）：未映射的 se.Code（例如 500）依旧走 default，原样透传，不得被误收进 404。
// 防御未来有人想"把所有 SyncPermsError 都按 404 处理"的随手改动。
func TestSyncPerms_UnmappedSyncPermsErrCode_StillFallsThroughDefault(t *testing.T) {
	ctrl := gomock.NewController(t)
	defer ctrl.Finish()

	hashedSecret, err := bcrypt.GenerateFromPassword([]byte("m2_secret"), bcrypt.MinCost)
	require.NoError(t, err)

	mockProduct := mocks.NewMockSysProductModel(ctrl)
	mockProduct.EXPECT().FindOneByAppKey(gomock.Any(), "m2_key2").
		Return(&productModel.SysProduct{
			Id: 1, Code: "m2_prod2", AppKey: "m2_key2",
			AppSecret: string(hashedSecret), Status: 1,
		}, nil)
	// LockByCodeTx 拿到的行必须 Status=1 才能继续进入 diff 逻辑
	mockProduct.EXPECT().LockByCodeTx(gomock.Any(), gomock.Any(), "m2_prod2").
		Return(&productModel.SysProduct{Id: 1, Code: "m2_prod2", Status: 1}, nil)

	mockPerm := mocks.NewMockSysPermModel(ctrl)
	mockPerm.EXPECT().FindMapByProductCodeWithTx(gomock.Any(), gomock.Any(), "m2_prod2").
		Return(nil, assertAnyErr("internal storage bug"))
	mockPerm.EXPECT().TransactCtx(gomock.Any(), gomock.Any()).
		DoAndReturn(func(ctx context.Context, fn func(context.Context, sqlx.Session) error) error {
			return fn(ctx, nil)
		})

	svcCtx := mocks.NewMockServiceContext(mocks.MockModels{Product: mockProduct, Perm: mockPerm})

	logic := NewSyncPermsLogic(context.Background(), svcCtx)
	_, err = logic.SyncPerms(&types.SyncPermsReq{
		AppKey: "m2_key2", AppSecret: "m2_secret",
		Perms: []types.SyncPermItem{{Code: "p1", Name: "P1"}},
	})

	require.Error(t, err)
	var se *SyncPermsError
	require.ErrorAs(t, err, &se, "未映射 code 走 default，原 SyncPermsError 被原样透传")
	assert.Equal(t, 500, se.Code, "500 必须保持 500 原语义，不得被误归类为 404")
	var ce *response.CodeError
	assert.False(t, assert.ObjectsAreEqual(err, ce),
		"500 分支绝不能被映射成 response.CodeError{Code:404}")
}

// assertAnyErr 构造任意错误，用来模拟 tx 内非业务分支错误。
func assertAnyErr(msg string) error {
	return &localErr{s: msg}
}

type localErr struct{ s string }

func (e *localErr) Error() string { return e.s }

func primeProductIndex(t *testing.T, rds *redis.Redis, cachePrefix, productCode string) string {
	t.Helper()
	idxKey := fmt.Sprintf("%s:ud:idx:p:%s", cachePrefix, productCode)
	canary := fmt.Sprintf("%s:ud:probe:%s", cachePrefix, testutil.UniqueId())
	_, err := rds.Sadd(idxKey, canary)
	require.NoError(t, err, "SAdd 到 productIndexKey 失败，Redis 不可用，测试前置条件失败")
	members, err := rds.Smembers(idxKey)
	require.NoError(t, err)
	require.Contains(t, members, canary, "primeProductIndex: canary 必须先出现在集合里")
	return idxKey
}

// TC-1064: 纯新增不触发 CleanByProduct
func TestSyncPerms_PureAddDoesNotTriggerCleanByProduct(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	cfg := testutil.GetTestConfig()
	rds := redis.MustNewRedis(cfg.CacheRedis.Nodes[0].RedisConf)
	conn := testutil.GetTestSqlConn()

	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()
	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)
	t.Cleanup(func() { testutil.CleanTableByField(ctx, conn, "`sys_perm`", "productCode", pc) })

	idxKey := primeProductIndex(t, rds, cfg.CacheRedis.KeyPrefix, pc)
	t.Cleanup(func() { _, _ = rds.Del(idxKey) })

	result, err := ExecuteSyncPerms(ctx, svcCtx, appKey, appSecret, []SyncPermItem{
		{Code: "r11_4_add_a", Name: "A"},
		{Code: "r11_4_add_b", Name: "B"},
		{Code: "r11_4_add_c", Name: "C"},
	})
	require.NoError(t, err)
	require.NotNil(t, result)
	assert.Equal(t, int64(3), result.Added)
	assert.Equal(t, int64(0), result.Updated)
	assert.Equal(t, int64(0), result.Disabled)

	// 纯新增路径：CleanByProduct 不得被调用，索引集合必须仍保留 canary。
	exists, err := rds.Exists(idxKey)
	require.NoError(t, err)
	assert.True(t, exists,
		"added=3 / updated=0 / disabled=0 属于纯新增，不得触发 CleanByProduct；"+
			"productIndexKey 若被删除说明 SyncPerms 仍在走全产品清缓存路径，回归：会把该产品"+
			"所有在线用户下一次请求同时打穿回 DB")
}

// TC-1065: updated > 0 时必须触发 CleanByProduct
func TestSyncPerms_UpdateTriggersCleanByProduct(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	cfg := testutil.GetTestConfig()
	rds := redis.MustNewRedis(cfg.CacheRedis.Nodes[0].RedisConf)
	conn := testutil.GetTestSqlConn()

	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()
	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)
	t.Cleanup(func() { testutil.CleanTableByField(ctx, conn, "`sys_perm`", "productCode", pc) })

	// 第一次同步：纯新增，为随后的 update 打底；这次不触发 Clean，CleanByProduct 仍然可被后续触发。
	_, err := ExecuteSyncPerms(ctx, svcCtx, appKey, appSecret, []SyncPermItem{
		{Code: "r11_4_upd", Name: "OldName"},
	})
	require.NoError(t, err)

	idxKey := primeProductIndex(t, rds, cfg.CacheRedis.KeyPrefix, pc)
	t.Cleanup(func() { _, _ = rds.Del(idxKey) })

	// 第二次同步：同一 Code 改 Name → updated=1。
	result, err := ExecuteSyncPerms(ctx, svcCtx, appKey, appSecret, []SyncPermItem{
		{Code: "r11_4_upd", Name: "NewName"},
	})
	require.NoError(t, err)
	require.NotNil(t, result)
	assert.Equal(t, int64(1), result.Updated,
		"前置：同名 Code 改 Name 必须 updated=1，否则后续断言失去意义")

	exists, err := rds.Exists(idxKey)
	require.NoError(t, err)
	assert.False(t, exists,
		"updated>0 必须触发 CleanByProduct；若 canary 仍在，说明 Logic 把"+
			"updated 情况也误归入'纯新增'分支，已存在 UD 缓存中的旧 perms 将长期对外返回")
}

// TC-1066: disabled > 0 时必须触发 CleanByProduct
func TestSyncPerms_DisableTriggersCleanByProduct(t *testing.T) {
	ctx := context.Background()
	svcCtx := newTestSvcCtx()
	cfg := testutil.GetTestConfig()
	rds := redis.MustNewRedis(cfg.CacheRedis.Nodes[0].RedisConf)
	conn := testutil.GetTestSqlConn()

	pc := testutil.UniqueId()
	appKey := testutil.UniqueId()
	appSecret := testutil.UniqueId()
	_, cleanProduct := insertSyncTestProduct(t, ctx, pc, appKey, appSecret, 1)
	t.Cleanup(cleanProduct)
	t.Cleanup(func() { testutil.CleanTableByField(ctx, conn, "`sys_perm`", "productCode", pc) })

	// 先注入两个 perm。
	_, err := ExecuteSyncPerms(ctx, svcCtx, appKey, appSecret, []SyncPermItem{
		{Code: "r11_4_keep", Name: "K"},
		{Code: "r11_4_drop", Name: "D"},
	})
	require.NoError(t, err)

	idxKey := primeProductIndex(t, rds, cfg.CacheRedis.KeyPrefix, pc)
	t.Cleanup(func() { _, _ = rds.Del(idxKey) })

	// 第二次只同步 r11_4_keep，r11_4_drop 会被 DisableNotInCodesWithTx 置 disabled。
	result, err := ExecuteSyncPerms(ctx, svcCtx, appKey, appSecret, []SyncPermItem{
		{Code: "r11_4_keep", Name: "K"},
	})
	require.NoError(t, err)
	assert.Equal(t, int64(1), result.Disabled,
		"前置：第二次只同步 keep，drop 必须被 disabled=1")

	exists, err := rds.Exists(idxKey)
	require.NoError(t, err)
	assert.False(t, exists,
		"disabled>0 必须触发 CleanByProduct，否则已缓存的 UD.perms 里仍挂着"+
			"已禁用权限，权限网关会把不再有效的权限判为 allow，产生权限残留")
}

func TestExecuteSyncPerms_DeduplicatesRequest(t *testing.T) {
	ctrl := gomock.NewController(t)
	t.Cleanup(ctrl.Finish)

	hashedSecret, err := bcrypt.GenerateFromPassword([]byte("s"), bcrypt.MinCost)
	require.NoError(t, err)

	mockProduct := mocks.NewMockSysProductModel(ctrl)
	mockProduct.EXPECT().FindOneByAppKey(gomock.Any(), "ak").
		Return(&productModel.SysProduct{
			Id: 1, Code: "pc_dedup", AppKey: "ak", AppSecret: string(hashedSecret), Status: 1,
		}, nil)
	// LockByCodeTx 拿到的行必须 Status=1
	mockProduct.EXPECT().LockByCodeTx(gomock.Any(), gomock.Any(), "pc_dedup").
		Return(&productModel.SysProduct{Id: 1, Code: "pc_dedup", Status: 1}, nil)

	mockPerm := mocks.NewMockSysPermModel(ctrl)
	mockPerm.EXPECT().FindMapByProductCodeWithTx(gomock.Any(), gomock.Any(), "pc_dedup").
		Return(map[string]*permModel.SysPerm{}, nil)

	var captured []*permModel.SysPerm
	mockPerm.EXPECT().TransactCtx(gomock.Any(), gomock.Any()).
		DoAndReturn(func(ctx context.Context, fn func(context.Context, sqlx.Session) error) error {
			return fn(ctx, nil)
		})
	mockPerm.EXPECT().BatchInsertWithTx(gomock.Any(), nil, gomock.Any()).
		DoAndReturn(func(ctx context.Context, s sqlx.Session, items []*permModel.SysPerm) error {
			captured = items
			return nil
		})
	// 去重后 codes 只剩一个，DisableNotInCodesWithTx 用去重后的集合做 NOT IN。
	mockPerm.EXPECT().DisableNotInCodesWithTx(gomock.Any(), nil, "pc_dedup", []string{"dup_code"}, gomock.Any()).
		Return(int64(0), nil)

	svcCtx := mocks.NewMockServiceContext(mocks.MockModels{
		Product: mockProduct, Perm: mockPerm,
	})

	result, err := ExecuteSyncPerms(context.Background(), svcCtx, "ak", "s", []SyncPermItem{
		{Code: "dup_code", Name: "A"},
		{Code: "dup_code", Name: "A-again"},
		{Code: "dup_code", Name: "A-yet-again"},
	})
	require.NoError(t, err)
	require.NotNil(t, result)

	require.Len(t, captured, 1, "入参内 code 重复必须去重为 1 条，避免自撞 1062")
	assert.Equal(t, "dup_code", captured[0].Code)
	assert.Equal(t, "A", captured[0].Name,
		"去重策略应稳定到首次出现，使行为可预测")
}

func newBaseProductMock(ctrl *gomock.Controller, code string) *mocks.MockSysProductModel {
	hashed, _ := bcrypt.GenerateFromPassword([]byte("s"), bcrypt.MinCost)
	m := mocks.NewMockSysProductModel(ctrl)
	m.EXPECT().FindOneByAppKey(gomock.Any(), "ak").
		Return(&productModel.SysProduct{
			Id: 1, Code: code, AppKey: "ak", AppSecret: string(hashed), Status: 1,
		}, nil)
	return m
}

// TC-0843:  契约 —— 正常路径下 LockByCodeTx 必须先于 FindMapByProductCodeWithTx，
// 且两者均在同一个 tx session 内被调用。
func TestExecuteSyncPerms_LockBeforeMapReadInTx(t *testing.T) {
	ctrl := gomock.NewController(t)
	t.Cleanup(ctrl.Finish)

	productMock := newBaseProductMock(ctrl, "pc_tx_order")
	permMock := mocks.NewMockSysPermModel(ctrl)

	// 关键点 1：TransactCtx 必须真的传入一个 tx session，并把所有子调用都发生在其中。
	permMock.EXPECT().TransactCtx(gomock.Any(), gomock.Any()).
		DoAndReturn(func(ctx context.Context, fn func(context.Context, sqlx.Session) error) error {
			return fn(ctx, nil) // nil session 只是 mock 占位
		})

	// 关键点 2：gomock 的 Call.After 强制 LockByCodeTx 先于 FindMapByProductCodeWithTx 执行。
	// 顺序反过来的话 gomock 会在 Finish 时报错。
	// 事务内复核 Status 必须 Status=1，否则走 403 分支不写 perm
	lockCall := productMock.EXPECT().LockByCodeTx(gomock.Any(), gomock.Any(), "pc_tx_order").
		Return(&productModel.SysProduct{Id: 1, Code: "pc_tx_order", Status: 1}, nil)

	permMock.EXPECT().FindMapByProductCodeWithTx(gomock.Any(), gomock.Any(), "pc_tx_order").
		Return(map[string]*permModel.SysPerm{}, nil).
		After(lockCall)

	// 一条简单的 INSERT + DisableNotIn 让流程走完；非本 TC 的主断言。
	permMock.EXPECT().BatchInsertWithTx(gomock.Any(), nil, gomock.Any()).Return(nil)
	permMock.EXPECT().DisableNotInCodesWithTx(gomock.Any(), nil, "pc_tx_order", []string{"x"}, gomock.Any()).
		Return(int64(0), nil)

	svcCtx := mocks.NewMockServiceContext(mocks.MockModels{Product: productMock, Perm: permMock})

	result, err := ExecuteSyncPerms(context.Background(), svcCtx, "ak", "s",
		[]SyncPermItem{{Code: "x", Name: "X"}})
	require.NoError(t, err)
	require.NotNil(t, result)
	assert.Equal(t, int64(1), result.Added, "lock 在 tx 内就位后应当能正常写入")
}

// TC-0844:  分支 —— tx 内 LockByCodeTx 返回 sqlx.ErrNotFound（产品在 tx 开启后被删），
// 必须映射为 SyncPermsError{Code:404, Message:"产品不存在"}，而非 500。
func TestExecuteSyncPerms_LockNotFound_Maps404(t *testing.T) {
	ctrl := gomock.NewController(t)
	t.Cleanup(ctrl.Finish)

	productMock := newBaseProductMock(ctrl, "pc_tx_gone")
	permMock := mocks.NewMockSysPermModel(ctrl)

	permMock.EXPECT().TransactCtx(gomock.Any(), gomock.Any()).
		DoAndReturn(func(ctx context.Context, fn func(context.Context, sqlx.Session) error) error {
			return fn(ctx, nil)
		})

	productMock.EXPECT().LockByCodeTx(gomock.Any(), gomock.Any(), "pc_tx_gone").
		Return(nil, sqlx.ErrNotFound)

	// 关键：锁失败后绝不能继续走 FindMapByProductCodeWithTx / BatchInsertWithTx。
	// gomock 默认严格模式会在 Finish 时报 "unexpected call"，所以不为这些方法登记任何期望即可。

	svcCtx := mocks.NewMockServiceContext(mocks.MockModels{Product: productMock, Perm: permMock})
	result, err := ExecuteSyncPerms(context.Background(), svcCtx, "ak", "s",
		[]SyncPermItem{{Code: "x", Name: "X"}})

	assert.Nil(t, result)
	require.Error(t, err)

	var se *SyncPermsError
	require.True(t, errors.As(err, &se), "锁不到产品行必须产出 *SyncPermsError")
	assert.Equal(t, 404, se.Code,
		"tx 开启后 LockByCodeTx=ErrNotFound 意味着产品行在 tx 中不可见，应当返回 404 而非 500")
	assert.Contains(t, se.Message, "产品不存在",
		"文案应当能让调用方人眼秒懂是什么错误")
}

// TC-0845:  容错 —— tx 内 LockByCodeTx 冒出非 NotFound 的通用错误（driver/conn 异常），
// 必须被事务回滚并被外层包裹为 SyncPermsError（500 级），而非原始 driver 错误直接冒出去。
func TestExecuteSyncPerms_LockGenericError_WrappedAs500(t *testing.T) {
	ctrl := gomock.NewController(t)
	t.Cleanup(ctrl.Finish)

	productMock := newBaseProductMock(ctrl, "pc_tx_boom")
	permMock := mocks.NewMockSysPermModel(ctrl)

	permMock.EXPECT().TransactCtx(gomock.Any(), gomock.Any()).
		DoAndReturn(func(ctx context.Context, fn func(context.Context, sqlx.Session) error) error {
			return fn(ctx, nil)
		})

	boom := errors.New("driver: connection lost")
	productMock.EXPECT().LockByCodeTx(gomock.Any(), gomock.Any(), "pc_tx_boom").
		Return(nil, boom)
	// 锁失败后同样不应调用后续方法。

	svcCtx := mocks.NewMockServiceContext(mocks.MockModels{Product: productMock, Perm: permMock})
	result, err := ExecuteSyncPerms(context.Background(), svcCtx, "ak", "s",
		[]SyncPermItem{{Code: "x", Name: "X"}})

	assert.Nil(t, result)
	require.Error(t, err)

	var se *SyncPermsError
	require.True(t, errors.As(err, &se), "底层错误必须被包成 *SyncPermsError，防止 driver 错误直接上抛")
	assert.Equal(t, 500, se.Code,
		"非 NotFound 的 DB 错误应当 fail-close 为 500，让接入方区别于 404/409")
	assert.NotContains(t, se.Message, "connection lost",
		"对外文案不能泄露原始 driver 错误（避免信息披露）")
}