package user

import (
	"errors"
	"testing"
	"time"

	permModel "perms-system-server/internal/model/perm"
	"perms-system-server/internal/response"
	"perms-system-server/internal/svc"
	"perms-system-server/internal/testutil"
	"perms-system-server/internal/testutil/ctxhelper"
	"perms-system-server/internal/types"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func insertTestPerm(t *testing.T, svcCtx *svc.ServiceContext, productCode string) int64 {
	t.Helper()
	now := time.Now().Unix()
	res, err := svcCtx.SysPermModel.Insert(ctxhelper.SuperAdminCtx(), &permModel.SysPerm{
		ProductCode: productCode,
		Name:        "perm_" + testutil.UniqueId(),
		Code:        "code_" + testutil.UniqueId(),
		Status:      1,
		CreateTime:  now,
		UpdateTime:  now,
	})
	require.NoError(t, err)
	id, _ := res.LastInsertId()
	return id
}

// TC-0165: 正常ALLOW
func TestSetUserPerms_Allow(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	userId := insertTestUser(t, ctx, username, testutil.HashPassword("pass"))
	mId := insertTestMember(t, svcCtx, "test_product", userId)

	p1 := insertTestPerm(t, svcCtx, "test_product")
	p2 := insertTestPerm(t, svcCtx, "test_product")

	t.Cleanup(func() {
		testutil.CleanTableByField(ctx, conn, "`sys_user_perm`", "userId", userId)
		testutil.CleanTable(ctx, conn, "`sys_product_member`", mId)
		testutil.CleanTable(ctx, conn, "`sys_user`", userId)
		testutil.CleanTable(ctx, conn, "`sys_perm`", p1, p2)
	})

	logic := NewSetUserPermsLogic(ctx, svcCtx)
	err := logic.SetUserPerms(&types.SetPermsReq{
		UserId: userId,
		Perms: []types.UserPermItem{
			{PermId: p1, Effect: "ALLOW"},
			{PermId: p2, Effect: "ALLOW"},
		},
	})
	require.NoError(t, err)

	perms, err := svcCtx.SysUserPermModel.FindByUserId(ctx, userId)
	require.NoError(t, err)
	assert.Len(t, perms, 2)
	for _, p := range perms {
		assert.Equal(t, "ALLOW", p.Effect)
	}
}

// TC-0167: DENY权限
func TestSetUserPerms_Deny(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	userId := insertTestUser(t, ctx, username, testutil.HashPassword("pass"))
	mId := insertTestMember(t, svcCtx, "test_product", userId)

	p1 := insertTestPerm(t, svcCtx, "test_product")

	t.Cleanup(func() {
		testutil.CleanTableByField(ctx, conn, "`sys_user_perm`", "userId", userId)
		testutil.CleanTable(ctx, conn, "`sys_product_member`", mId)
		testutil.CleanTable(ctx, conn, "`sys_user`", userId)
		testutil.CleanTable(ctx, conn, "`sys_perm`", p1)
	})

	logic := NewSetUserPermsLogic(ctx, svcCtx)
	err := logic.SetUserPerms(&types.SetPermsReq{
		UserId: userId,
		Perms: []types.UserPermItem{
			{PermId: p1, Effect: "DENY"},
		},
	})
	require.NoError(t, err)

	perms, err := svcCtx.SysUserPermModel.FindByUserId(ctx, userId)
	require.NoError(t, err)
	require.Len(t, perms, 1)
	assert.Equal(t, "DENY", perms[0].Effect)
	assert.Equal(t, p1, perms[0].PermId)
}

// TC-0166: 用户不存在
func TestSetUserPerms_UserNotFound(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewSetUserPermsLogic(ctx, svcCtx)
	err := logic.SetUserPerms(&types.SetPermsReq{
		UserId: 999999999,
		Perms: []types.UserPermItem{
			{PermId: 1, Effect: "ALLOW"},
		},
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 404, codeErr.Code())
	assert.Equal(t, "用户不存在", codeErr.Error())
}

// TC-0168: 清空权限
func TestSetUserPerms_EmptyPerms_ClearsAll(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	userId := insertTestUser(t, ctx, username, testutil.HashPassword("pass"))
	mId := insertTestMember(t, svcCtx, "test_product", userId)

	p1 := insertTestPerm(t, svcCtx, "test_product")

	t.Cleanup(func() {
		testutil.CleanTableByField(ctx, conn, "`sys_user_perm`", "userId", userId)
		testutil.CleanTable(ctx, conn, "`sys_product_member`", mId)
		testutil.CleanTable(ctx, conn, "`sys_user`", userId)
		testutil.CleanTable(ctx, conn, "`sys_perm`", p1)
	})

	logic := NewSetUserPermsLogic(ctx, svcCtx)
	err := logic.SetUserPerms(&types.SetPermsReq{
		UserId: userId,
		Perms: []types.UserPermItem{
			{PermId: p1, Effect: "ALLOW"},
		},
	})
	require.NoError(t, err)

	err = logic.SetUserPerms(&types.SetPermsReq{
		UserId: userId,
		Perms:  []types.UserPermItem{},
	})
	require.NoError(t, err)

	perms, err := svcCtx.SysUserPermModel.FindByUserId(ctx, userId)
	require.NoError(t, err)
	assert.Empty(t, perms)
}

// TC-0169: 无效Effect值
func TestSetUserPerms_InvalidEffect(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	userId := insertTestUser(t, ctx, username, testutil.HashPassword("pass"))
	mId := insertTestMember(t, svcCtx, "test_product", userId)
	t.Cleanup(func() {
		testutil.CleanTable(ctx, conn, "`sys_product_member`", mId)
		testutil.CleanTable(ctx, conn, "`sys_user`", userId)
	})

	logic := NewSetUserPermsLogic(ctx, svcCtx)
	err := logic.SetUserPerms(&types.SetPermsReq{
		UserId: userId,
		Perms: []types.UserPermItem{
			{PermId: 1, Effect: "INVALID"},
		},
	})
	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(), "effect值无效")
}

// TC-0170: PermId不存在
func TestSetUserPerms_PermNotExists(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	userId := insertTestUser(t, ctx, username, testutil.HashPassword("pass"))
	mId := insertTestMember(t, svcCtx, "test_product", userId)
	t.Cleanup(func() {
		testutil.CleanTable(ctx, conn, "`sys_product_member`", mId)
		testutil.CleanTable(ctx, conn, "`sys_user`", userId)
	})

	logic := NewSetUserPermsLogic(ctx, svcCtx)
	err := logic.SetUserPerms(&types.SetPermsReq{
		UserId: userId,
		Perms: []types.UserPermItem{
			{PermId: 999999999, Effect: "ALLOW"},
		},
	})
	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(), "无效的权限ID")
}

// TC-0171: 权限不属于当前产品
func TestSetUserPerms_PermBelongsToOtherProduct(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	userId := insertTestUser(t, ctx, username, testutil.HashPassword("pass"))
	mId := insertTestMember(t, svcCtx, "test_product", userId)

	otherPerm := insertTestPerm(t, svcCtx, "other_product")

	t.Cleanup(func() {
		testutil.CleanTable(ctx, conn, "`sys_product_member`", mId)
		testutil.CleanTable(ctx, conn, "`sys_user`", userId)
		testutil.CleanTable(ctx, conn, "`sys_perm`", otherPerm)
	})

	logic := NewSetUserPermsLogic(ctx, svcCtx)
	err := logic.SetUserPerms(&types.SetPermsReq{
		UserId: userId,
		Perms: []types.UserPermItem{
			{PermId: otherPerm, Effect: "ALLOW"},
		},
	})
	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(), "其他产品的权限")
}

// TC-0172: 目标用户不是当前产品成员时拒绝设置权限(L-5修复验证)
func TestSetUserPerms_NonMemberRejected(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	userId := insertTestUser(t, ctx, username, testutil.HashPassword("pass"))
	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", userId) })

	logic := NewSetUserPermsLogic(ctx, svcCtx)
	err := logic.SetUserPerms(&types.SetPermsReq{
		UserId: userId,
		Perms:  []types.UserPermItem{},
	})
	require.Error(t, err)

	var codeErr2 *response.CodeError
	require.True(t, errors.As(err, &codeErr2))
	assert.Equal(t, 400, codeErr2.Code())
	assert.Contains(t, codeErr2.Error(), "不是当前产品的成员")
}