package repository

import (
	"context"
	"database/sql/driver"
	"git.sch9.ru/new_gate/ms-auth/pkg/utils"
	"github.com/DATA-DOG/go-sqlmock"
	"github.com/jmoiron/sqlx"
	"github.com/stretchr/testify/require"
	"go.uber.org/zap"
	"testing"
	"time"

	"git.sch9.ru/new_gate/ms-auth/internal/models"
)

func TestUsersRepository_CreateUser(t *testing.T) {
	t.Parallel()

	db, mock, err := sqlmock.New(sqlmock.QueryMatcherOption(sqlmock.QueryMatcherEqual))
	require.NoError(t, err)
	defer db.Close()

	sqlxDB := sqlx.NewDb(db, "sqlmock")
	defer sqlxDB.Close()

	userRepo := NewUserRepository(sqlxDB, zap.NewNop())

	t.Run("valid user creation", func(t *testing.T) {
		rows := sqlmock.NewRows([]string{"id"}).AddRow(1)

		user := &models.User{
			Username: utils.AsStringP("testuser"),
			Password: utils.AsStringP("testpassword"),
			Email:    utils.AsStringP("test@example.com"),
			Role:     AsRoleP(models.RoleAdmin),
		}

		mock.ExpectQuery(sqlxDB.Rebind(createUser)).WithArgs(
			user.Username,
			AnyString{},
			user.Email,
			AnyTime{},
			user.Role,
		).WillReturnRows(rows)

		_, err = userRepo.CreateUser(context.Background(), user)
		require.NoError(t, err)
	})

	// TODO: add more tests
	// invalid username
	// invalid password
	// invalid email
	// invalid role
	// password hashing error
	// database query error
	// database scan error
	// etc
}

func TestUsersRepository_ReadUserById(t *testing.T) {
	t.Parallel()

	db, mock, err := sqlmock.New(sqlmock.QueryMatcherOption(sqlmock.QueryMatcherEqual))
	require.NoError(t, err)
	defer db.Close()

	sqlxDB := sqlx.NewDb(db, "sqlmock")
	defer sqlxDB.Close()

	userRepo := NewUserRepository(sqlxDB, zap.NewNop())

	t.Run("valid user read", func(t *testing.T) {
		user := &models.User{
			Id:        utils.AsInt32P(1),
			Username:  utils.AsStringP("testuser"),
			Password:  utils.AsStringP("testpassword"),
			Email:     utils.AsStringP("test@example.com"),
			ExpiresAt: utils.AsTimeP(time.Now().Add(1 * time.Hour)),
			CreatedAt: utils.AsTimeP(time.Now()),
			UpdatedAt: utils.AsTimeP(time.Now()),
			Role:      AsRoleP(models.RoleAdmin),
		}

		rows := sqlmock.NewRows(
			[]string{
				"id",
				"username",
				"hashed_pwd",
				"email",
				"expires_at",
				"created_at",
				"updated_at",
				"role",
			}).AddRow(
			*user.Id,
			*user.Username,
			*user.Password,
			*user.Email,
			*user.ExpiresAt,
			*user.CreatedAt,
			*user.UpdatedAt,
			*user.Role,
		)

		mock.ExpectQuery(sqlxDB.Rebind(readUserById)).WithArgs(
			*user.Id,
		).WillReturnRows(rows)

		readUser, err := userRepo.ReadUserById(context.Background(), *user.Id)
		require.NoError(t, err)
		require.Equal(t, user, readUser)
	})
}

func TestUsersRepository_UpdateUser(t *testing.T) {
	t.Parallel()

	db, mock, err := sqlmock.New(sqlmock.QueryMatcherOption(sqlmock.QueryMatcherEqual))
	require.NoError(t, err)
	defer db.Close()

	sqlxDB := sqlx.NewDb(db, "sqlmock")
	defer sqlxDB.Close()

	userRepo := NewUserRepository(sqlxDB, zap.NewNop())

	t.Run("valid user update", func(t *testing.T) {
		user := &models.User{
			Id:        utils.AsInt32P(1),
			Username:  utils.AsStringP("testuser"),
			Password:  utils.AsStringP("testpassword"),
			Email:     utils.AsStringP("test@example.com"),
			ExpiresAt: utils.AsTimeP(time.Now().Add(1 * time.Hour)),
			Role:      AsRoleP(models.RoleAdmin),
		}

		require.NoError(t, err)

		mock.ExpectExec(sqlxDB.Rebind(updateUser)).
			WithArgs(
				*user.Username,
				AnyString{},
				*user.Email,
				*user.ExpiresAt,
				*user.Role,
				*user.Id,
			).WillReturnResult(sqlmock.NewResult(1, 1))

		err = userRepo.UpdateUser(context.Background(), user)
		require.NoError(t, err)
	})

	// TODO: add more tests
}

func TestUsersRepository_DeleteUser(t *testing.T) {
	t.Parallel()

	db, mock, err := sqlmock.New(sqlmock.QueryMatcherOption(sqlmock.QueryMatcherEqual))
	require.NoError(t, err)
	defer db.Close()

	sqlxDB := sqlx.NewDb(db, "sqlmock")
	defer sqlxDB.Close()

	userRepo := NewUserRepository(sqlxDB, zap.NewNop())

	t.Run("valid user deletion", func(t *testing.T) {
		user := &models.User{
			Id: utils.AsInt32P(1),
		}

		mock.ExpectExec(sqlxDB.Rebind(deleteUser)).WithArgs(*user.Id).WillReturnResult(sqlmock.NewResult(1, 1))

		err = userRepo.DeleteUser(context.Background(), *user.Id)
		require.NoError(t, err)
	})

	// TODO: add more tests
}

func AsRoleP(r models.Role) *models.Role {
	return &r
}

type AnyTime struct{}

// Match satisfies sqlmock.Argument interface
func (a AnyTime) Match(v driver.Value) bool {
	_, ok := v.(time.Time)
	return ok
}

type AnyString struct{}

func (a AnyString) Match(v driver.Value) bool {
	_, ok := v.(string)
	return ok
}