package repository

import (
	"backend/pkg/library/errs/code"
	"backend/pkg/permission/domain"
	"context"
	"errors"
	"go.mongodb.org/mongo-driver/v2/mongo/options"
	"time"

	"backend/pkg/library/errs"
	"backend/pkg/library/mongo"
	"backend/pkg/permission/domain/entity"
	"backend/pkg/permission/domain/repository"

	"github.com/zeromicro/go-zero/core/stores/cache"
	"github.com/zeromicro/go-zero/core/stores/mon"
	"go.mongodb.org/mongo-driver/v2/bson"
	mongodriver "go.mongodb.org/mongo-driver/v2/mongo"
)

type ClientRepositoryParam struct {
	Conf      *mongo.Conf
	CacheConf cache.CacheConf
	DBOpts    []mon.Option
	CacheOpts []cache.Option
}

type ClientRepository struct {
	DB mongo.DocumentDBWithCacheUseCase
}

// NewClientRepository 創建客戶端倉庫實例
func NewClientRepository(param ClientRepositoryParam) repository.ClientRepository {
	e := entity.Client{}
	documentDB, err := mongo.MustDocumentDBWithCache(
		param.Conf,
		e.CollectionName(),
		param.CacheConf,
		param.DBOpts,
		param.CacheOpts,
	)
	if err != nil {
		panic(err)
	}

	return &ClientRepository{
		DB: documentDB,
	}
}

func (repo *ClientRepository) Create(ctx context.Context, client *entity.Client) error {
	now := time.Now()
	client.CreateTime = now
	client.UpdateTime = now
	id := bson.NewObjectID()
	client.ID = id
	rk := domain.GeClientRedisKey(id.Hex())
	_, err := repo.DB.InsertOne(ctx, rk, client)
	if err != nil {
		// 檢查是否為重複鍵錯誤
		if mongodriver.IsDuplicateKeyError(err) {
			return errs.ResourceAlreadyExist(client.ClientID)
		}

		return errs.DBErrorWithScope(code.CloudEPPermission, err.Error())
	}

	return nil
}

func (repo *ClientRepository) GetByID(ctx context.Context, id string) (*entity.Client, error) {
	var client entity.Client
	objID, err := bson.ObjectIDFromHex(id)
	if err != nil {
		return nil, err
	}
	rk := domain.GeClientRedisKey(objID.Hex())
	err = repo.DB.FindOne(ctx, rk, &client, bson.M{"_id": objID})
	if err != nil {
		if errors.Is(err, mongodriver.ErrNoDocuments) {
			return nil, errs.ResourceNotFoundWithScope(
				code.CloudEPPermission,
				domain.FailedToGetByID,
				"failed to get client by id")
		}

		return nil, errs.DBErrorWithScope(code.CloudEPPermission, err.Error())
	}

	return &client, nil
}

func (repo *ClientRepository) GetByClientID(ctx context.Context, clientID string) (*entity.Client, error) {
	var client entity.Client
	rk := domain.GeClientRedisKey(clientID)
	err := repo.DB.FindOne(ctx, rk, &client, bson.M{"client_id": clientID})
	if err != nil {
		if errors.Is(err, mongodriver.ErrNoDocuments) {
			return nil, errs.ResourceNotFoundWithScope(
				code.CloudEPPermission,
				domain.FailedToGetByClientID,
				"failed to get client by client id")
		}

		return nil, errs.DBErrorWithScope(code.CloudEPPermission, err.Error())
	}

	return &client, nil
}

func (repo *ClientRepository) Update(ctx context.Context, id string, client *entity.Client) error {
	client.UpdateTime = time.Now()
	objID, err := bson.ObjectIDFromHex(id)
	if err != nil {
		return err
	}
	update := bson.M{
		"$set": bson.M{
			"name":        client.Name,
			"secret":      client.Secret,
			"status":      client.Status,
			"update_time": client.UpdateTime,
		},
	}
	gc, err := repo.GetByID(ctx, id)
	if err != nil {
		return err
	}
	rk := domain.GeClientRedisKey(objID.Hex())
	_, err = repo.DB.UpdateOne(ctx, rk, bson.M{"_id": objID}, update)
	if err != nil {
		return errs.DBErrorWithScope(code.CloudEPPermission, err.Error())
	}

	rk = domain.GeClientRedisKey(gc.ClientID)
	err = repo.DB.DelCache(ctx, rk)
	if err != nil {
		return err
	}

	return nil
}

func (repo *ClientRepository) Delete(ctx context.Context, id string) error {
	objID, err := bson.ObjectIDFromHex(id)
	if err != nil {
		return err
	}
	gc, err := repo.GetByID(ctx, id)
	if err != nil {
		return err
	}

	rk := domain.GeClientRedisKey(gc.ClientID)
	err = repo.DB.DelCache(ctx, rk)
	if err != nil {
		return err
	}

	rk = domain.GeClientRedisKey(objID.Hex())
	_, err = repo.DB.DeleteOne(ctx, rk, bson.M{"_id": objID})
	if err != nil {
		return errs.DBErrorWithScope(code.CloudEPPermission, err.Error())
	}

	return nil
}

func (repo *ClientRepository) List(ctx context.Context, filter repository.ClientFilter) ([]*entity.Client, error) {
	query := bson.M{}

	if filter.Status != nil {
		query["status"] = *filter.Status
	}

	var clients []*entity.Client
	err := repo.DB.GetClient().Find(ctx, query, &clients,
		options.Find().SetLimit(int64(filter.Limit)),
		options.Find().SetSkip(int64(filter.Skip)),
	)

	if err != nil {
		return nil, errs.DBErrorWithScope(code.CloudEPPermission, err.Error())
	}

	return clients, nil
}

// Index20241226001UP 創建索引
func (repo *ClientRepository) Index20241226001UP(ctx context.Context) (*mongodriver.Cursor, error) {
	repo.DB.PopulateIndex(ctx, "client_id", 1, true)
	repo.DB.PopulateIndex(ctx, "status", 1, false)

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