package member

import (
	"database/sql"
	"sync"
	"testing"
	"time"

	productModel "perms-system-server/internal/model/product"
	memberModel "perms-system-server/internal/model/productmember"
	userModel "perms-system-server/internal/model/user"
	"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"
)

// TC-0213: 正常添加
func TestAddMember_Normal(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()
	now := time.Now().Unix()
	uid := testutil.UniqueId()

	pRes, err := svcCtx.SysProductModel.Insert(ctx, &productModel.SysProduct{
		Code: uid, Name: "test_prod", AppKey: uid, AppSecret: "s1",
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	pId, _ := pRes.LastInsertId()

	uRes, err := svcCtx.SysUserModel.Insert(ctx, &userModel.SysUser{
		Username: uid, Password: testutil.HashPassword("pass123"), Nickname: "nick",
		Avatar: sql.NullString{}, IsSuperAdmin: 2, MustChangePassword: 2,
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	uId, _ := uRes.LastInsertId()

	t.Cleanup(func() {
		testutil.CleanTableByField(ctx, conn, "`sys_product_member`", "productCode", uid)
		testutil.CleanTable(ctx, conn, "`sys_user`", uId)
		testutil.CleanTable(ctx, conn, "`sys_product`", pId)
	})

	logic := NewAddMemberLogic(ctx, svcCtx)
	resp, err := logic.AddMember(&types.AddMemberReq{
		ProductCode: uid,
		UserId:      uId,
		MemberType:  "MEMBER",
	})
	require.NoError(t, err)
	assert.True(t, resp.Id > 0)

	member, err := svcCtx.SysProductMemberModel.FindOne(ctx, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, uid, member.ProductCode)
	assert.Equal(t, uId, member.UserId)
	assert.Equal(t, "MEMBER", member.MemberType)
	assert.Equal(t, int64(1), member.Status)
}

// TC-0214: 产品不存在
func TestAddMember_ProductNotFound(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewAddMemberLogic(ctx, svcCtx)
	_, err := logic.AddMember(&types.AddMemberReq{
		ProductCode: "nonexistent_product_xyz",
		UserId:      1,
		MemberType:  "MEMBER",
	})
	require.Error(t, err)
	ce, ok := err.(*response.CodeError)
	require.True(t, ok)
	assert.Equal(t, 404, ce.Code())
	assert.Equal(t, "产品不存在", ce.Error())
}

// TC-0215: 用户不存在
func TestAddMember_UserNotFound(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()
	now := time.Now().Unix()
	uid := testutil.UniqueId()

	pRes, err := svcCtx.SysProductModel.Insert(ctx, &productModel.SysProduct{
		Code: uid, Name: "test_prod", AppKey: uid, AppSecret: "s1",
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	pId, _ := pRes.LastInsertId()

	t.Cleanup(func() {
		testutil.CleanTable(ctx, conn, "`sys_product`", pId)
	})

	logic := NewAddMemberLogic(ctx, svcCtx)
	_, err = logic.AddMember(&types.AddMemberReq{
		ProductCode: uid,
		UserId:      999999999,
		MemberType:  "MEMBER",
	})
	require.Error(t, err)
	ce, ok := err.(*response.CodeError)
	require.True(t, ok)
	assert.Equal(t, 404, ce.Code())
	assert.Equal(t, "用户不存在", ce.Error())
}

// TC-0216: 已是成员
func TestAddMember_AlreadyMember(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()
	now := time.Now().Unix()
	uid := testutil.UniqueId()

	pRes, err := svcCtx.SysProductModel.Insert(ctx, &productModel.SysProduct{
		Code: uid, Name: "test_prod", AppKey: uid, AppSecret: "s1",
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	pId, _ := pRes.LastInsertId()

	uRes, err := svcCtx.SysUserModel.Insert(ctx, &userModel.SysUser{
		Username: uid, Password: testutil.HashPassword("pass123"), Nickname: "nick",
		Avatar: sql.NullString{}, IsSuperAdmin: 2, MustChangePassword: 2,
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	uId, _ := uRes.LastInsertId()

	mRes, err := svcCtx.SysProductMemberModel.Insert(ctx, &memberModel.SysProductMember{
		ProductCode: uid, UserId: uId, MemberType: "MEMBER",
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	mId, _ := mRes.LastInsertId()

	t.Cleanup(func() {
		testutil.CleanTable(ctx, conn, "`sys_product_member`", mId)
		testutil.CleanTable(ctx, conn, "`sys_user`", uId)
		testutil.CleanTable(ctx, conn, "`sys_product`", pId)
	})

	logic := NewAddMemberLogic(ctx, svcCtx)
	_, err = logic.AddMember(&types.AddMemberReq{
		ProductCode: uid,
		UserId:      uId,
		MemberType:  "ADMIN",
	})
	require.Error(t, err)
	ce, ok := err.(*response.CodeError)
	require.True(t, ok)
	assert.Equal(t, 409, ce.Code())
	assert.Equal(t, "该用户已是该产品成员", ce.Error())
}

// TC-0218: 无效MemberType
func TestAddMember_InvalidMemberType(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()
	now := time.Now().Unix()
	uid := testutil.UniqueId()

	pRes, err := svcCtx.SysProductModel.Insert(ctx, &productModel.SysProduct{
		Code: uid, Name: "test_prod", AppKey: uid, AppSecret: "s1",
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	pId, _ := pRes.LastInsertId()

	uRes, err := svcCtx.SysUserModel.Insert(ctx, &userModel.SysUser{
		Username: uid, Password: testutil.HashPassword("pass123"), Nickname: "nick",
		Avatar: sql.NullString{}, IsSuperAdmin: 2, MustChangePassword: 2,
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	uId, _ := uRes.LastInsertId()

	t.Cleanup(func() {
		testutil.CleanTable(ctx, conn, "`sys_user`", uId)
		testutil.CleanTable(ctx, conn, "`sys_product`", pId)
	})

	logic := NewAddMemberLogic(ctx, svcCtx)
	_, err = logic.AddMember(&types.AddMemberReq{
		ProductCode: uid,
		UserId:      uId,
		MemberType:  "INVALID",
	})
	require.Error(t, err)
	ce, ok := err.(*response.CodeError)
	require.True(t, ok)
	assert.Equal(t, 400, ce.Code())
	assert.Equal(t, "无效的成员类型", ce.Error())
}

// TC-0217: 并发添加
func TestAddMember_ConcurrentSameUserProduct(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()
	now := time.Now().Unix()
	uid := testutil.UniqueId()

	pRes, err := svcCtx.SysProductModel.Insert(ctx, &productModel.SysProduct{
		Code: uid, Name: "concurrent_prod", AppKey: uid, AppSecret: "s1",
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	pId, _ := pRes.LastInsertId()

	uRes, err := svcCtx.SysUserModel.Insert(ctx, &userModel.SysUser{
		Username: uid, Password: testutil.HashPassword("pass123"), Nickname: "nick",
		Avatar: sql.NullString{}, IsSuperAdmin: 2, MustChangePassword: 2,
		Status: 1, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	uId, _ := uRes.LastInsertId()

	t.Cleanup(func() {
		testutil.CleanTableByField(ctx, conn, "`sys_product_member`", "productCode", uid)
		testutil.CleanTable(ctx, conn, "`sys_user`", uId)
		testutil.CleanTable(ctx, conn, "`sys_product`", pId)
	})

	var wg sync.WaitGroup
	results := make(chan error, 2)
	for i := 0; i < 2; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()
			logic := NewAddMemberLogic(ctx, svcCtx)
			_, err := logic.AddMember(&types.AddMemberReq{
				ProductCode: uid,
				UserId:      uId,
				MemberType:  "MEMBER",
			})
			results <- err
		}()
	}
	wg.Wait()
	close(results)

	var errs []error
	for e := range results {
		errs = append(errs, e)
	}
	require.Len(t, errs, 2)

	successCount := 0
	failCount := 0
	for _, e := range errs {
		if e == nil {
			successCount++
		} else {
			failCount++
		}
	}
	assert.Equal(t, 1, successCount, "exactly one goroutine should succeed")
	assert.Equal(t, 1, failCount, "exactly one goroutine should fail (409 or DB duplicate)")
}