package services

import (
	"context"
	"tyapi-server/internal/domains/api/entities"
	repo "tyapi-server/internal/domains/api/repositories"
)

type ApiUserAggregateService interface {
	CreateApiUser(ctx context.Context, apiUserId string) error
	UpdateWhiteList(ctx context.Context, apiUserId string, whiteList []string) error
	AddToWhiteList(ctx context.Context, apiUserId string, entry string) error
	RemoveFromWhiteList(ctx context.Context, apiUserId string, entry string) error
	FreezeApiUser(ctx context.Context, apiUserId string) error
	UnfreezeApiUser(ctx context.Context, apiUserId string) error
	LoadApiUserByUserId(ctx context.Context, apiUserId string) (*entities.ApiUser, error)
	LoadApiUserByAccessId(ctx context.Context, accessId string) (*entities.ApiUser, error)
	SaveApiUser(ctx context.Context, apiUser *entities.ApiUser) error
}

type ApiUserAggregateServiceImpl struct {
	repo repo.ApiUserRepository
}

func NewApiUserAggregateService(repo repo.ApiUserRepository) ApiUserAggregateService {
	return &ApiUserAggregateServiceImpl{repo: repo}
}

func (s *ApiUserAggregateServiceImpl) CreateApiUser(ctx context.Context, apiUserId string) error {
	apiUser, err := entities.NewApiUser(apiUserId)
	if err != nil {
		return err
	}
	if err := apiUser.Validate(); err != nil {
		return err
	}
	return s.repo.Create(ctx, apiUser)
}

func (s *ApiUserAggregateServiceImpl) UpdateWhiteList(ctx context.Context, apiUserId string, whiteList []string) error {
	apiUser, err := s.repo.FindByUserId(ctx, apiUserId)
	if err != nil {
		return err
	}
	apiUser.UpdateWhiteList(whiteList)
	return s.repo.Update(ctx, apiUser)
}

func (s *ApiUserAggregateServiceImpl) AddToWhiteList(ctx context.Context, apiUserId string, entry string) error {
	apiUser, err := s.repo.FindByUserId(ctx, apiUserId)
	if err != nil {
		return err
	}
	err = apiUser.AddToWhiteList(entry)
	if err != nil {
		return err
	}
	return s.repo.Update(ctx, apiUser)
}

func (s *ApiUserAggregateServiceImpl) RemoveFromWhiteList(ctx context.Context, apiUserId string, entry string) error {
	apiUser, err := s.repo.FindByUserId(ctx, apiUserId)
	if err != nil {
		return err
	}
	err = apiUser.RemoveFromWhiteList(entry)
	if err != nil {
		return err
	}
	return s.repo.Update(ctx, apiUser)
}

func (s *ApiUserAggregateServiceImpl) FreezeApiUser(ctx context.Context, apiUserId string) error {
	apiUser, err := s.repo.FindByUserId(ctx, apiUserId)
	if err != nil {
		return err
	}
	apiUser.Freeze()
	return s.repo.Update(ctx, apiUser)
}

func (s *ApiUserAggregateServiceImpl) UnfreezeApiUser(ctx context.Context, apiUserId string) error {
	apiUser, err := s.repo.FindByUserId(ctx, apiUserId)
	if err != nil {
		return err
	}
	apiUser.Unfreeze()
	return s.repo.Update(ctx, apiUser)
}


func (s *ApiUserAggregateServiceImpl) LoadApiUserByAccessId(ctx context.Context, accessId string) (*entities.ApiUser, error) {
	return s.repo.FindByAccessId(ctx, accessId)
}

func (s *ApiUserAggregateServiceImpl) LoadApiUserByUserId(ctx context.Context, apiUserId string) (*entities.ApiUser, error) {
	apiUser, err := s.repo.FindByUserId(ctx, apiUserId)
	if err != nil {
		return nil, err
	}
	
	// 确保WhiteList不为nil
	if apiUser.WhiteList == nil {
		apiUser.WhiteList = []string{}
	}
	
	return apiUser, nil
}

func (s *ApiUserAggregateServiceImpl) SaveApiUser(ctx context.Context, apiUser *entities.ApiUser) error {
	exists, err := s.repo.FindByUserId(ctx, apiUser.UserId)
	if err != nil {
		return err
	}
	if exists != nil {
		// 确保WhiteList不为nil
		if apiUser.WhiteList == nil {
			apiUser.WhiteList = []string{}
		}
		return s.repo.Update(ctx, apiUser)
	} else {
		return s.repo.Create(ctx, apiUser)
	}
}