add: add encoder, mover, watcher, and logger packages

internal/watcher/watcher.go

@@ -0,0 +1,66 @@
+package watcher
+
+import (
+	"fmt"
+	"path/filepath"
+	"time"
+
+	"videnc-vibe/pkg/types"
+)
+
+type Watcher struct {
+	inputDir string
+	interval time.Duration
+}
+
+func New(inputDir string, intervalSeconds int) *Watcher {
+	interval := time.Duration(intervalSeconds) * time.Second
+	if interval < 10*time.Second {
+		interval = 10 * time.Second
+	}
+	if interval > 30*time.Second {
+		interval = 30 * time.Second
+	}
+	return &Watcher{
+		inputDir: inputDir,
+		interval: interval,
+	}
+}
+
+func (w *Watcher) Start(processFn func(string) error, done chan struct{}) {
+	ticker := time.NewTicker(w.interval)
+	defer ticker.Stop()
+
+	w.scanAndProcess(processFn)
+
+	for {
+		select {
+		case <-done:
+			return
+		case <-ticker.C:
+			w.scanAndProcess(processFn)
+		}
+	}
+}
+
+func (w *Watcher) scanAndProcess(processFn func(string) error) {
+	files, err := filepath.Glob(filepath.Join(w.inputDir, "*.mkv"))
+	if err != nil {
+		fmt.Printf("Error scanning input directory: %v\n", err)
+		return
+	}
+
+	for _, file := range files {
+		if err := processFn(file); err != nil {
+			fmt.Printf("Error processing %s: %v\n", file, err)
+		}
+	}
+}
+
+func DetectMediaType(width, height int) types.MediaType {
+	pixels := width * height
+	if pixels < 600000 {
+		return types.MediaTypeDVD
+	}
+	return types.MediaTypeBluRay
+}