add version and ID (filehash)

main.go

@@ -1,8 +1,10 @@
 package main
 
 import (
+	"crypto/sha256"
 	"encoding/json"
 	"fmt"
+	"io"
 	"io/fs"
 	"log"
 	"net/http"
@@ -72,14 +74,19 @@ func getLineageOSROMs(romDirectory string) ([]LineageOSROM, error) {
 			return nil
 		}
 
+		fileHash, err := hashFile(d.Name())
+		if err != nil {
+			log.Printf("ingore zip file '%s', failed to get sha256 hash: %v", d.Name(), err)
+		}
+
 		lineageOSROM := LineageOSROM{
 			Datetime: int(fInfo.ModTime().Unix()),
 			Filename: d.Name(),
-			ID:       "TBD",
+			ID:       fileHash,
 			Romtype:  "nightly",
 			Size:     int(fInfo.Size()),
 			URL:      fmt.Sprintf("https://lineageos-ota.deadbeef.codes/public/%s", d.Name()),
-			Version:  "TBD",
+			Version:  splitName[1],
 		}
 
 		lineageOSROMs = append(lineageOSROMs, lineageOSROM)
@@ -114,3 +121,18 @@ func lineageOSROMListHandler(w http.ResponseWriter, r *http.Request) {
 
 	w.Write(b)
 }
+
+func hashFile(filename string) (string, error) {
+	f, err := os.Open(filename)
+	if err != nil {
+		return "", fmt.Errorf("failed to open file '%s': %v: ", filename, err)
+	}
+	defer f.Close()
+
+	h := sha256.New()
+	if _, err := io.Copy(h, f); err != nil {
+		return "", fmt.Errorf("failed to copy data from file to hash function: %v", err)
+	}
+
+	return string(h.Sum(nil)), nil
+}