mirror of
https://git.fightbot.fun/hxuanyu/BingPaper.git
synced 2026-02-15 07:19:33 +08:00
236 lines
7.6 KiB
Go
236 lines
7.6 KiB
Go
package image
|
||
|
||
import (
|
||
"context"
|
||
"errors"
|
||
"fmt"
|
||
"math/rand"
|
||
"time"
|
||
|
||
"BingPaper/internal/config"
|
||
"BingPaper/internal/model"
|
||
"BingPaper/internal/repo"
|
||
"BingPaper/internal/service/fetcher"
|
||
"BingPaper/internal/storage"
|
||
"BingPaper/internal/util"
|
||
|
||
"go.uber.org/zap"
|
||
)
|
||
|
||
var ErrFetchStarted = errors.New("on-demand fetch started")
|
||
|
||
func CleanupOldImages(ctx context.Context) error {
|
||
days := config.GetConfig().Retention.Days
|
||
if days <= 0 {
|
||
return nil
|
||
}
|
||
|
||
threshold := time.Now().AddDate(0, 0, -days).Format("2006-01-02")
|
||
util.Logger.Info("Starting cleanup task", zap.Int("retention_days", days), zap.String("threshold", threshold))
|
||
|
||
var images []model.Image
|
||
if err := repo.DB.Where("date < ?", threshold).Preload("Variants").Find(&images).Error; err != nil {
|
||
util.Logger.Error("Failed to query old images for cleanup", zap.Error(err))
|
||
return err
|
||
}
|
||
|
||
for _, img := range images {
|
||
util.Logger.Info("Deleting old image", zap.String("date", img.Date))
|
||
for _, v := range img.Variants {
|
||
if err := storage.GlobalStorage.Delete(ctx, v.StorageKey); err != nil {
|
||
util.Logger.Warn("Failed to delete storage object", zap.String("key", v.StorageKey), zap.Error(err))
|
||
}
|
||
}
|
||
// 删除关联记录（逻辑外键控制）
|
||
if err := repo.DB.Where("image_id = ?", img.ID).Delete(&model.ImageVariant{}).Error; err != nil {
|
||
util.Logger.Error("Failed to delete variants", zap.Uint("image_id", img.ID), zap.Error(err))
|
||
}
|
||
// 删除主表记录
|
||
if err := repo.DB.Delete(&img).Error; err != nil {
|
||
util.Logger.Error("Failed to delete image", zap.Uint("id", img.ID), zap.Error(err))
|
||
}
|
||
}
|
||
|
||
util.Logger.Info("Cleanup task completed", zap.Int("deleted_count", len(images)))
|
||
return nil
|
||
}
|
||
|
||
func GetTodayImage(mkt string) (*model.Image, error) {
|
||
today := time.Now().Format("2006-01-02")
|
||
util.Logger.Debug("Getting today image", zap.String("mkt", mkt), zap.String("today", today))
|
||
var img model.Image
|
||
tx := repo.DB.Where("date = ?", today)
|
||
if mkt != "" {
|
||
tx = tx.Where("mkt = ?", mkt)
|
||
}
|
||
err := tx.Preload("Variants").First(&img).Error
|
||
if err != nil && mkt != "" && config.GetConfig().API.EnableOnDemandFetch && util.IsValidRegion(mkt) {
|
||
// 如果没找到，尝试异步按需抓取该地区
|
||
util.Logger.Info("Image not found in DB, starting asynchronous on-demand fetch", zap.String("mkt", mkt))
|
||
f := fetcher.NewFetcher()
|
||
go func() {
|
||
_ = f.FetchRegion(context.Background(), mkt)
|
||
}()
|
||
return nil, ErrFetchStarted
|
||
}
|
||
|
||
if err != nil {
|
||
util.Logger.Debug("Today image not found, trying latest image", zap.String("mkt", mkt))
|
||
// 如果今天还是没有，尝试获取最近的一张
|
||
tx = repo.DB.Order("date desc")
|
||
if mkt != "" {
|
||
tx = tx.Where("mkt = ?", mkt)
|
||
}
|
||
err = tx.Preload("Variants").First(&img).Error
|
||
}
|
||
|
||
// 兜底逻辑：如果指定地区没找到，且开启了兜底开关，则尝试获取默认地区的图片
|
||
if err != nil && mkt != "" && config.GetConfig().API.EnableMktFallback {
|
||
defaultMkt := config.GetConfig().GetDefaultMkt()
|
||
util.Logger.Debug("Image not found, trying fallback to default market", zap.String("mkt", mkt), zap.String("defaultMkt", defaultMkt))
|
||
if mkt != defaultMkt {
|
||
return GetTodayImage(defaultMkt)
|
||
}
|
||
return GetTodayImage("")
|
||
}
|
||
|
||
if err == nil {
|
||
util.Logger.Debug("Found image", zap.String("date", img.Date), zap.String("mkt", img.Mkt))
|
||
}
|
||
return &img, err
|
||
}
|
||
|
||
func GetAllRegionsTodayImages() ([]model.Image, error) {
|
||
regions := config.GetConfig().Fetcher.Regions
|
||
if len(regions) == 0 {
|
||
regions = []string{config.GetConfig().GetDefaultMkt()}
|
||
}
|
||
|
||
var images []model.Image
|
||
for _, mkt := range regions {
|
||
img, err := GetTodayImage(mkt)
|
||
if err == nil {
|
||
images = append(images, *img)
|
||
}
|
||
}
|
||
return images, nil
|
||
}
|
||
|
||
func GetRandomImage(mkt string) (*model.Image, error) {
|
||
util.Logger.Debug("Getting random image", zap.String("mkt", mkt))
|
||
var img model.Image
|
||
// SQLite 使用 RANDOM(), MySQL/Postgres 使用 RANDOM() 或 RAND()
|
||
// 简单起见，先查总数再 Offset
|
||
var count int64
|
||
tx := repo.DB.Model(&model.Image{})
|
||
if mkt != "" {
|
||
tx = tx.Where("mkt = ?", mkt)
|
||
}
|
||
tx.Count(&count)
|
||
if count == 0 && mkt != "" && config.GetConfig().API.EnableOnDemandFetch && util.IsValidRegion(mkt) {
|
||
// 如果没找到，尝试异步按需抓取该地区
|
||
util.Logger.Info("No images found in DB for region, starting asynchronous on-demand fetch", zap.String("mkt", mkt))
|
||
f := fetcher.NewFetcher()
|
||
go func() {
|
||
_ = f.FetchRegion(context.Background(), mkt)
|
||
}()
|
||
return nil, ErrFetchStarted
|
||
}
|
||
|
||
if count == 0 {
|
||
return nil, fmt.Errorf("no images found")
|
||
}
|
||
|
||
// 优化随机查询：使用 Offset 代替 ORDER BY RANDOM()
|
||
// 注意：tx 包含了前面的 Where 条件
|
||
offset := rand.Intn(int(count))
|
||
util.Logger.Debug("Random image selection", zap.Int64("total", count), zap.Int("offset", offset))
|
||
err := tx.Preload("Variants").Offset(offset).Limit(1).Find(&img).Error
|
||
|
||
// 兜底逻辑
|
||
if (err != nil || img.ID == 0) && mkt != "" && config.GetConfig().API.EnableMktFallback {
|
||
defaultMkt := config.GetConfig().GetDefaultMkt()
|
||
util.Logger.Debug("Random image not found, trying fallback", zap.String("mkt", mkt), zap.String("defaultMkt", defaultMkt))
|
||
if mkt != defaultMkt {
|
||
return GetRandomImage(defaultMkt)
|
||
}
|
||
return GetRandomImage("")
|
||
}
|
||
|
||
if err == nil && img.ID == 0 {
|
||
return nil, fmt.Errorf("no images found")
|
||
}
|
||
|
||
if err == nil {
|
||
util.Logger.Debug("Found random image", zap.String("date", img.Date), zap.String("mkt", img.Mkt))
|
||
}
|
||
|
||
return &img, err
|
||
}
|
||
|
||
func GetImageByDate(date string, mkt string) (*model.Image, error) {
|
||
util.Logger.Debug("Getting image by date", zap.String("date", date), zap.String("mkt", mkt))
|
||
var img model.Image
|
||
tx := repo.DB.Where("date = ?", date)
|
||
if mkt != "" {
|
||
tx = tx.Where("mkt = ?", mkt)
|
||
}
|
||
err := tx.Preload("Variants").First(&img).Error
|
||
if err != nil && mkt != "" && config.GetConfig().API.EnableOnDemandFetch && util.IsValidRegion(mkt) {
|
||
// 如果没找到，尝试异步按需抓取该地区
|
||
util.Logger.Info("Image not found in DB for date, starting asynchronous on-demand fetch", zap.String("mkt", mkt), zap.String("date", date))
|
||
f := fetcher.NewFetcher()
|
||
go func() {
|
||
_ = f.FetchRegion(context.Background(), mkt)
|
||
}()
|
||
return nil, ErrFetchStarted
|
||
}
|
||
|
||
// 兜底逻辑
|
||
if err != nil && mkt != "" && config.GetConfig().API.EnableMktFallback {
|
||
defaultMkt := config.GetConfig().GetDefaultMkt()
|
||
util.Logger.Debug("Image by date not found, trying fallback", zap.String("date", date), zap.String("mkt", mkt), zap.String("defaultMkt", defaultMkt))
|
||
if mkt != defaultMkt {
|
||
return GetImageByDate(date, defaultMkt)
|
||
}
|
||
return GetImageByDate(date, "")
|
||
}
|
||
|
||
if err == nil {
|
||
util.Logger.Debug("Found image by date", zap.String("date", img.Date), zap.String("mkt", img.Mkt))
|
||
}
|
||
return &img, err
|
||
}
|
||
|
||
func GetImageList(limit int, offset int, month string, mkt string) ([]model.Image, error) {
|
||
util.Logger.Debug("Getting image list", zap.Int("limit", limit), zap.Int("offset", offset), zap.String("month", month), zap.String("mkt", mkt))
|
||
var images []model.Image
|
||
tx := repo.DB.Model(&model.Image{})
|
||
|
||
if month != "" {
|
||
// 增强过滤：确保只处理 YYYY-MM 格式，防止注入或非法字符
|
||
// 这里简单处理：只要不为空就增加 LIKE 过滤
|
||
util.Logger.Debug("Filtering images by month", zap.String("month", month))
|
||
tx = tx.Where("date LIKE ?", month+"%")
|
||
}
|
||
|
||
if mkt != "" {
|
||
tx = tx.Where("mkt = ?", mkt)
|
||
}
|
||
|
||
tx = tx.Order("date desc").Preload("Variants")
|
||
|
||
if limit > 0 {
|
||
tx = tx.Limit(limit)
|
||
}
|
||
if offset > 0 {
|
||
tx = tx.Offset(offset)
|
||
}
|
||
|
||
err := tx.Find(&images).Error
|
||
if err != nil {
|
||
util.Logger.Error("Failed to get image list", zap.Error(err), zap.String("month", month))
|
||
}
|
||
return images, err
|
||
}
|