feat: initialise project structure with core encoding queue, database models, and web management API

internal/queue/manager.go

@@ -0,0 +1,58 @@
+package queue
+
+import (
+	"log"
+	"sync"
+
+	"goencode/internal/db"
+	"goencode/internal/encoder"
+)
+
+type Manager struct {
+	FFmpegPath   string
+	TempDir      string
+	TriggerChan  chan struct{}
+	StopChan     chan struct{}
+	Broadcast    func(string, interface{})
+	encoder      *encoder.FFmpegManager
+	isProcessing bool
+	mu           sync.Mutex
+}
+
+func NewManager(ffmpegPath, tempDir string, broadcast func(string, interface{})) *Manager {
+	return &Manager{
+		FFmpegPath:  ffmpegPath,
+		TempDir:     tempDir,
+		TriggerChan: make(chan struct{}, 1),
+		StopChan:    make(chan struct{}),
+		Broadcast:   broadcast,
+		encoder:     encoder.NewManager(ffmpegPath),
+	}
+}
+
+func (m *Manager) Start() {
+	// Mark any interrupted processing jobs as failed
+	if err := db.MarkProcessingAsFailed(); err != nil {
+		log.Printf("Failed to mark interrupted jobs: %v", err)
+	}
+
+	go m.workerLoop()
+	m.Trigger() // Initial trigger
+}
+
+func (m *Manager) Stop() {
+	close(m.StopChan)
+}
+
+func (m *Manager) Trigger() {
+	select {
+	case m.TriggerChan <- struct{}{}:
+	default:
+	}
+}
+
+func (m *Manager) NotifySSE(event string, data interface{}) {
+	if m.Broadcast != nil {
+		m.Broadcast(event, data)
+	}
+}