package service

import (
	"context"
	"time"

	"github.com/topfans/backend/gateway/repository"
	"github.com/topfans/backend/pkg/models"
)

// SyncVersionRequest uniCloud 同步请求体
// 注：定义在 service 包（而非 controller 包），避免 controller ↔ service 循环依赖
type SyncVersionRequest struct {
	Android *PlatformVersionInfo `json:"android"`
	IOS     *PlatformVersionInfo `json:"ios"`
}

// PlatformVersionInfo 单个平台的版本信息
type PlatformVersionInfo struct {
	URL     string `json:"url"     binding:"required"`
	Version string `json:"version"`
	Type    string `json:"type"    binding:"required,oneof=native_app wgt"`
}

// appDownloadRepo 下载配置仓库接口（仅暴露 service 层需要的两个方法）
type appDownloadRepo interface {
	FindByType(ctx context.Context, pkgType string) ([]models.AppDownloadConfig, error)
	UpsertAll(ctx context.Context, configs []models.AppDownloadConfig) error
}

// AppDownloadService App下载页业务逻辑
type AppDownloadService struct {
	repo appDownloadRepo
}

// NewAppDownloadService 构造函数
func NewAppDownloadService(repo *repository.AppDownloadRepository) *AppDownloadService {
	return &AppDownloadService{repo: repo}
}

// GetAllNativeApp 获取所有 native_app 类型的下载配置
func (s *AppDownloadService) GetAllNativeApp(ctx context.Context) ([]models.AppDownloadConfig, error) {
	return s.repo.FindByType(ctx, models.AppPackageTypeNativeApp)
}

// SyncVersion 同步版本信息（upsert）
func (s *AppDownloadService) SyncVersion(ctx context.Context, req *SyncVersionRequest) error {
	now := time.Now().UnixMilli()
	var configs []models.AppDownloadConfig

	if req.Android != nil {
		configs = append(configs, models.AppDownloadConfig{
			Platform:    "android",
			Type:        req.Android.Type,
			DownloadURL: req.Android.URL,
			Version:     req.Android.Version,
			UpdatedAt:   now,
		})
	}
	if req.IOS != nil {
		configs = append(configs, models.AppDownloadConfig{
			Platform:    "ios",
			Type:        req.IOS.Type,
			DownloadURL: req.IOS.URL,
			Version:     req.IOS.Version,
			UpdatedAt:   now,
		})
	}

	return s.repo.UpsertAll(ctx, configs)
}