package services

import (
	"errors"
	"go.uber.org/zap"
	"goalfymax-admin/internal/models"
	"goalfymax-admin/internal/storage"
	"goalfymax-admin/pkg/utils"
)

// UserLevelConfigService 用户等级配置服务接口
type UserLevelConfigService interface {
	Create(req *models.UserLevelConfigCreateRequest) (*models.UserLevelConfig, error)
	GetByID(id uint) (*models.UserLevelConfig, error)
	Update(id uint, req *models.UserLevelConfigUpdateRequest) (*models.UserLevelConfig, error)
	Delete(id uint) error
	List(req *models.UserLevelConfigListRequest) ([]models.UserLevelConfig, int64, error)
	UpdateStatus(id uint, status int) error
	GetAll() ([]models.UserLevelConfig, error)
}

type userLevelConfigService struct {
	storage storage.UserLevelConfigStorage
	logger  *utils.Logger
}

// NewUserLevelConfigService 创建用户等级配置服务实例
func NewUserLevelConfigService(storage storage.UserLevelConfigStorage, logger *utils.Logger) UserLevelConfigService {
	return &userLevelConfigService{
		storage: storage,
		logger:  logger,
	}
}

// Create 创建用户等级配置
func (s *userLevelConfigService) Create(req *models.UserLevelConfigCreateRequest) (*models.UserLevelConfig, error) {
	// 检查等级代码是否已存在
	_, err := s.storage.GetByLevelCode(req.LevelCode)
	if err == nil {
		return nil, errors.New("等级代码已存在")
	}

	// 创建配置
	config := &models.UserLevelConfig{
		LevelName:      req.LevelName,
		LevelCode:      req.LevelCode,
		ProjectLimit:   req.ProjectLimit,
		CoderVMLimit:   req.CoderVMLimit,
		BrowserVMLimit: req.BrowserVMLimit,
		ProcessLimit:   req.ProcessLimit,
		Description:    req.Description,
		SortOrder:      req.SortOrder,
		Status:         1, // 默认启用
	}

	err = s.storage.Create(config)
	if err != nil {
		s.logger.Error("创建用户等级配置失败", zap.Error(err))
		return nil, errors.New("创建用户等级配置失败")
	}

	s.logger.Info("用户等级配置创建成功", zap.String("level_name", config.LevelName))
	return config, nil
}

// GetByID 根据ID获取用户等级配置
func (s *userLevelConfigService) GetByID(id uint) (*models.UserLevelConfig, error) {
	return s.storage.GetByID(id)
}

// Update 更新用户等级配置
func (s *userLevelConfigService) Update(id uint, req *models.UserLevelConfigUpdateRequest) (*models.UserLevelConfig, error) {
	// 获取配置信息
	config, err := s.storage.GetByID(id)
	if err != nil {
		return nil, errors.New("配置不存在")
	}

	// 更新字段
	config.LevelName = req.LevelName
	config.ProjectLimit = req.ProjectLimit
	config.CoderVMLimit = req.CoderVMLimit
	config.BrowserVMLimit = req.BrowserVMLimit
	config.ProcessLimit = req.ProcessLimit
	config.Description = req.Description
	config.SortOrder = req.SortOrder

	// 保存更新
	err = s.storage.Update(config)
	if err != nil {
		s.logger.Error("更新用户等级配置失败", zap.Error(err))
		return nil, errors.New("更新用户等级配置失败")
	}

	s.logger.Info("用户等级配置更新成功", zap.Uint("id", id))
	return config, nil
}

// Delete 删除用户等级配置
func (s *userLevelConfigService) Delete(id uint) error {
	// 检查配置是否存在
	_, err := s.storage.GetByID(id)
	if err != nil {
		return errors.New("配置不存在")
	}

	// 删除配置
	err = s.storage.Delete(id)
	if err != nil {
		s.logger.Error("删除用户等级配置失败", zap.Error(err))
		return errors.New("删除用户等级配置失败")
	}

	s.logger.Info("用户等级配置删除成功", zap.Uint("id", id))
	return nil
}

// List 获取用户等级配置列表
func (s *userLevelConfigService) List(req *models.UserLevelConfigListRequest) ([]models.UserLevelConfig, int64, error) {
	return s.storage.List(req)
}

// UpdateStatus 更新状态
func (s *userLevelConfigService) UpdateStatus(id uint, status int) error {
	// 检查配置是否存在
	_, err := s.storage.GetByID(id)
	if err != nil {
		return errors.New("配置不存在")
	}

	// 更新状态
	err = s.storage.UpdateStatus(id, status)
	if err != nil {
		s.logger.Error("更新用户等级配置状态失败", zap.Error(err))
		return errors.New("更新用户等级配置状态失败")
	}

	s.logger.Info("用户等级配置状态更新成功", zap.Uint("id", id), zap.Int("status", status))
	return nil
}

// GetAll 获取所有用户等级配置
func (s *userLevelConfigService) GetAll() ([]models.UserLevelConfig, error) {
	return s.storage.GetAll()
}