package repository

import (
	"context"
	"time"

	"code.30cm.net/digimon/app-cloudep-permission-server/pkg/domain/entity"
	"code.30cm.net/digimon/app-cloudep-permission-server/pkg/domain/repository"
	mgo "code.30cm.net/digimon/library-go/mongo"
	"github.com/zeromicro/go-zero/core/stores/mon"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/bson/primitive"
	"go.mongodb.org/mongo-driver/mongo"
)

type RolePermissionRepositoryParam struct {
	Conf   *mgo.Conf
	DBOpts []mon.Option
}

type RolePermissionRepository struct {
	DB mgo.DocumentDBUseCase
}

func NewRolePermissionRepository(param RoleRepositoryParam) repository.RolePermissionRepository {
	e := entity.RolePermission{}
	db, err := mgo.NewDocumentDB(param.Conf, e.Collection(), param.DBOpts...)
	if err != nil {
		panic(err)
	}

	return &RolePermissionRepository{
		DB: db,
	}
}

func (repo *RolePermissionRepository) Get(ctx context.Context, roleID string) ([]*entity.RolePermission, error) {
	var result []*entity.RolePermission
	err := repo.DB.GetClient().Find(ctx, &result, bson.M{"role_id": roleID})
	if err != nil {
		return nil, err
	}

	return result, nil
}

func (repo *RolePermissionRepository) GetByPermissionID(ctx context.Context, permissionIDs []string) ([]*entity.RolePermission, error) {
	var result []*entity.RolePermission // 修正 []*entity.RolePermission -> []entity.RolePermission

	filter := bson.M{
		"permission_id": bson.M{"$in": permissionIDs}, // 使用 $in 運算子來匹配多個 permission_id
	}

	err := repo.DB.GetClient().Find(ctx, &result, filter)
	if err != nil {
		return nil, err
	}

	return result, nil
}

func (repo *RolePermissionRepository) Create(ctx context.Context, roles []entity.RolePermission) error {
	if len(roles) == 0 {
		return nil // 如果 roles 是空的，則不執行任何操作
	}

	now := time.Now().UTC().UnixNano()

	// 將 []entity.RolePermission 轉換為 []interface{}
	roleInterfaces := make([]any, 0, len(roles))
	for i := range roles {
		if roles[i].ID.IsZero() {
			roles[i].ID = primitive.NewObjectID()
			roles[i].CreateAt = now
			roles[i].UpdateAt = now
		}
		roleInterfaces = append(roleInterfaces, roles[i])
	}

	_, err := repo.DB.GetClient().InsertMany(ctx, roleInterfaces)

	return err
}

func (repo *RolePermissionRepository) Delete(ctx context.Context, roleID string, permissions []string) error {
	if len(permissions) == 0 {
		return nil // 如果 permissions 為空，則不執行刪除操作
	}

	filter := bson.M{
		"role_id":       roleID,
		"permission_id": bson.M{"$in": permissions}, // 使用 $in 刪除多個 permission_id
	}

	_, err := repo.DB.GetClient().DeleteMany(ctx, filter)
	if err != nil {
		return err
	}

	return nil
}

func (repo *RolePermissionRepository) Index20250225UP(ctx context.Context) (*mongo.Cursor, error) {
	repo.DB.PopulateMultiIndex(ctx, []string{
		"role_id",
		"permission_id",
	}, []int32{1, 1}, true)

	repo.DB.PopulateIndex(ctx, "role_id", 1, false)
	repo.DB.PopulateIndex(ctx, "permission_id", 1, false)

	return repo.DB.GetClient().Indexes().List(ctx)
}