package system

import (
	"context"
	"encoding/json"
	"errors"
	"time"

	"management/internal/erpserver/model/dto"
	"management/internal/erpserver/model/system"
	"management/internal/erpserver/service"
	v1 "management/internal/erpserver/service/v1"
	"management/internal/pkg/know"
	"management/internal/pkg/know/pearadmin"

	"gorm.io/gorm"
)

type configService struct {
	*service.Service
	repo system.ConfigRepository
}

func NewConfigService(service *service.Service, repo system.ConfigRepository) v1.ConfigService {
	return &configService{
		Service: service,
		repo:    repo,
	}
}

func (s *configService) Create(ctx context.Context, obj *system.Config) error {
	return s.repo.Create(ctx, obj)
}

func (s *configService) Update(ctx context.Context, obj *system.Config) error {
	return s.repo.Update(ctx, obj)
}

func (s *configService) Get(ctx context.Context, id int32) (*system.Config, error) {
	return s.repo.Get(ctx, id)
}

func (s *configService) List(ctx context.Context, q dto.SearchDto) ([]*system.Config, int64, error) {
	return s.repo.List(ctx, q)
}

func (s *configService) Pear(ctx context.Context) (*dto.PearConfig, error) {
	// 判断redis是否存储
	key := know.GetManageKey(ctx, know.PearAdmin)
	bs, err := s.Redis.GetBytes(ctx, key)
	if err == nil {
		var res *dto.PearConfig
		if err := json.Unmarshal(bs, &res); err == nil {
			return res, nil
		}
	}

	conf, err := s.repo.GetByKey(ctx, pearadmin.PearKey)
	if err != nil {
		return nil, err
	}

	var pear dto.PearConfig
	if err := json.Unmarshal([]byte(conf.Value), &pear); err != nil {
		return nil, err
	}

	_ = s.Redis.Set(ctx, key, conf.Value, time.Hour*6)
	return &pear, nil
}

func (s *configService) RefreshCache(ctx context.Context, key string) error {
	return s.Redis.Del(ctx, key)
}

func (s *configService) ResetPear(ctx context.Context) error {
	b, err := json.Marshal(pearadmin.PearJson)
	if err != nil {
		return err
	}

	conf, err := s.repo.GetByKey(ctx, pearadmin.PearKey)
	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
		return err
	}

	if errors.Is(err, gorm.ErrRecordNotFound) {
		// create
		conf = &system.Config{
			Key:   pearadmin.PearKey,
			Value: string(b),
		}
		err = s.Create(ctx, conf)
		if err != nil {
			return err
		}
	} else {
		// update
		conf.Value = string(b)
		conf.UpdatedAt = time.Now()
		err = s.Update(ctx, conf)
		if err != nil {
			return err
		}
	}

	return nil
}