Standalone application for fixing play times (#16)

cmd/playfix/main.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"encoding/binary"
+	"log"
+	"os"
+
+	"github.com/g026r/pocket-toolkit/pkg/io"
+)
+
+// Simple application to fix played times & nothing else.
+
+func main() {
+	entries, err := io.LoadEntries(os.DirFS("./"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	p, err := io.LoadPlaytimes(os.DirFS("./"))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	complete := false
+	out, err := os.CreateTemp("", "playtimes_*.bin")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer func() {
+		_ = out.Close()
+		if complete { // Overwrite the original with the temp file if successful; delete it if not.
+			err = os.Rename(out.Name(), "System/Played Games/playtimes.bin")
+		} else {
+			err = os.Remove(out.Name())
+		}
+	}()
+
+	// Write header
+	if err := binary.Write(out, binary.BigEndian, io.PlaytimesHeader); err != nil {
+		log.Fatal(err)
+	}
+	if err := binary.Write(out, binary.LittleEndian, uint32(len(entries))); err != nil {
+		log.Fatal(err)
+	}
+
+	// Write entries in the same order as list.bin
+	for _, e := range entries {
+		tmp := p[e.Sig]
+		tmp.Played = tmp.Played &^ 0xFF000000 // Fix the time. System prefix will get written by WriteTo
+		if err := binary.Write(out, binary.LittleEndian, e.Sig); err != nil {
+			log.Fatal(err)
+		}
+		if _, err := tmp.WriteTo(out); err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	complete = true
+}