fix(worker): refactor and fix issues of worker

src/handlers/fileshdr/async_handlers.go

@@ -0,0 +1,42 @@
+package fileshdr
+
+import (
+	"crypto/sha1"
+	"encoding/json"
+	"fmt"
+	"io"
+
+	"github.com/ihexxa/quickshare/src/worker"
+)
+const MsgTypeSha1 = "sha1"
+
+type Sha1Params struct {
+	FilePath string
+}
+
+func (h *FileHandlers) genSha1(msg worker.IMsg) error {
+	taskInputs := &Sha1Params{}
+	err := json.Unmarshal([]byte(msg.Body()), taskInputs)
+	if err != nil {
+		return fmt.Errorf("fail to unmarshal sha1 msg: %w", err)
+	}
+
+	f, err := h.deps.FS().GetFileReader(taskInputs.FilePath)
+	if err != nil {
+		return fmt.Errorf("fail to get reader: %s", err)
+	}
+
+	hasher := sha1.New()
+	buf := make([]byte, 4096)
+	_, err = io.CopyBuffer(hasher, f, buf)
+	if err != nil {
+		return err
+	}
+
+	sha1Sign := fmt.Sprintf("%x", hasher.Sum(nil))
+	err = h.deps.FileInfos().SetSha1(taskInputs.FilePath, sha1Sign)
+	if err != nil {
+		return fmt.Errorf("fail to set sha1: %s", err)
+	}
+	return nil
+}