feat: 添加块大小配置项

config/viper.go

@@ -10,6 +10,7 @@ import (
 type Config struct {
 	Threads   int   `toml:"threads" mapstructure:"threads"`
 	Workers   int   `toml:"workers" mapstructure:"workers"`
+	ChunkSize int32 `toml:"chunk_size" mapstructure:"chunk_size"`
 
 	Temp     tempConfig     `toml:"temp" mapstructure:"temp"`
 	Log      logConfig      `toml:"log" mapstructure:"log"`
@@ -77,6 +78,7 @@ func Init() {
 
 	viper.SetDefault("threads", 3)
 	viper.SetDefault("workers", 3)
+	viper.SetDefault("chunk_size", 50*1024*1024)
 
 	viper.SetDefault("temp.base_path", "cache/")
 	viper.SetDefault("temp.cache_ttl", 3600)

core/core.go

@@ -28,6 +28,7 @@ func processPendingTask(task types.Task) error {
 	dest, err := message.Download(&telegram.DownloadOptions{
 		FileName:  common.GetCacheFilePath(task.FileName),
 		Threads:   config.Cfg.Threads,
+		ChunkSize: config.Cfg.ChunkSize,
 		// ProgressCallback: func(totalBytes, downloadedBytes int64) {},
 	})
 	if err != nil {