Add jukebox_maker web app v1.0

Go web application for filling USB drives with media files.
Runs in Docker on Unraid with /media, /mnt/usb, /config volumes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/api/handlers_config.go

@@ -0,0 +1,41 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+	"sync"
+
+	"jukebox_maker/internal/config"
+)
+
+var cfgMu sync.Mutex
+
+func (s *Server) handleGetConfig(w http.ResponseWriter, r *http.Request) {
+	cfgMu.Lock()
+	cfg := *s.deps.Config
+	cfgMu.Unlock()
+	jsonOK(w, cfg)
+}
+
+func (s *Server) handlePutConfig(w http.ResponseWriter, r *http.Request) {
+	var incoming config.Config
+	if err := json.NewDecoder(r.Body).Decode(&incoming); err != nil {
+		jsonErr(w, http.StatusBadRequest, "invalid JSON: "+err.Error())
+		return
+	}
+	if err := incoming.Validate(); err != nil {
+		jsonErr(w, http.StatusUnprocessableEntity, err.Error())
+		return
+	}
+
+	cfgMu.Lock()
+	*s.deps.Config = incoming
+	cfgMu.Unlock()
+
+	if err := config.Save(s.deps.ConfigPath, s.deps.Config); err != nil {
+		jsonErr(w, http.StatusInternalServerError, "failed to save config: "+err.Error())
+		return
+	}
+
+	jsonOK(w, incoming)
+}

internal/api/handlers_copy.go

@@ -0,0 +1,68 @@
+package api
+
+import (
+	"context"
+	"net/http"
+
+	"jukebox_maker/internal/copier"
+	"jukebox_maker/internal/disk"
+)
+
+func (s *Server) handleCopyStart(w http.ResponseWriter, r *http.Request) {
+	diskInfo := s.deps.Watcher.CurrentDisk()
+	if diskInfo.State != disk.DiskKnown {
+		jsonErr(w, http.StatusUnprocessableEntity, "no known disk connected")
+		return
+	}
+
+	cfg := s.deps.Config
+	var enabledSources []string
+	for _, src := range cfg.Sources {
+		if src.Enabled {
+			enabledSources = append(enabledSources, src.Path)
+		}
+	}
+	if len(enabledSources) == 0 {
+		jsonErr(w, http.StatusUnprocessableEntity, "no sources enabled")
+		return
+	}
+
+	opts := copier.Options{
+		DiskID:         diskInfo.DiskID,
+		MountPath:      diskInfo.MountPath,
+		MediaPath:      s.deps.MediaPath,
+		EnabledSources: enabledSources,
+		ReserveFreeGB:  cfg.ReserveFreeGB,
+		OverwriteMode:  cfg.OverwriteMode,
+		FileSelectMode: cfg.FileSelectMode,
+	}
+
+	taskID, err := s.deps.Copier.Start(context.Background(), opts)
+	if err != nil {
+		switch err.Error() {
+		case "copy already running":
+			jsonErr(w, http.StatusConflict, err.Error())
+		default:
+			jsonErr(w, http.StatusUnprocessableEntity, err.Error())
+		}
+		return
+	}
+
+	w.WriteHeader(http.StatusAccepted)
+	jsonOK(w, map[string]string{"task_id": taskID})
+}
+
+func (s *Server) handleCopyCancel(w http.ResponseWriter, r *http.Request) {
+	s.deps.Copier.Cancel()
+	jsonOK(w, map[string]bool{"ok": true})
+}
+
+func (s *Server) handleTaskGet(w http.ResponseWriter, r *http.Request) {
+	id := r.PathValue("id")
+	t, ok := s.deps.Tasks.Get(id)
+	if !ok {
+		jsonErr(w, http.StatusNotFound, "task not found")
+		return
+	}
+	jsonOK(w, t)
+}

internal/api/handlers_disk.go

@@ -0,0 +1,34 @@
+package api
+
+import (
+	"net/http"
+
+	"jukebox_maker/internal/disk"
+)
+
+func (s *Server) handleDiskStatus(w http.ResponseWriter, r *http.Request) {
+	info := s.deps.Watcher.CurrentDisk()
+
+	type response struct {
+		State        disk.DiskState `json:"state"`
+		DiskID       string         `json:"disk_id"`
+		TotalBytes   int64          `json:"total_bytes"`
+		FreeBytes    int64          `json:"free_bytes"`
+		MountPath    string         `json:"mount_path"`
+		ActiveTaskID string         `json:"active_task_id,omitempty"`
+	}
+
+	resp := response{
+		State:      info.State,
+		DiskID:     info.DiskID,
+		TotalBytes: info.TotalBytes,
+		FreeBytes:  info.FreeBytes,
+		MountPath:  info.MountPath,
+	}
+
+	if t, ok := s.deps.Tasks.ActiveTask(); ok {
+		resp.ActiveTaskID = t.ID
+	}
+
+	jsonOK(w, resp)
+}

internal/api/handlers_sources.go

@@ -0,0 +1,26 @@
+package api
+
+import (
+	"net/http"
+	"os"
+)
+
+func (s *Server) handleSources(w http.ResponseWriter, r *http.Request) {
+	entries, err := os.ReadDir(s.deps.MediaPath)
+	if err != nil {
+		jsonOK(w, map[string][]string{"items": {}})
+		return
+	}
+
+	var items []string
+	for _, e := range entries {
+		if e.IsDir() && e.Name()[0] != '.' {
+			items = append(items, e.Name())
+		}
+	}
+	if items == nil {
+		items = []string{}
+	}
+
+	jsonOK(w, map[string][]string{"items": items})
+}

internal/api/server.go

@@ -0,0 +1,100 @@
+package api
+
+import (
+	"encoding/json"
+	"html/template"
+	"net/http"
+
+	webui "jukebox_maker/web"
+
+	"jukebox_maker/internal/config"
+	"jukebox_maker/internal/copier"
+	"jukebox_maker/internal/task"
+	"jukebox_maker/internal/watcher"
+)
+
+type Deps struct {
+	Config     *config.Config
+	ConfigPath string
+	Watcher    *watcher.Watcher
+	Copier     *copier.Copier
+	Tasks      *task.Store
+	MediaPath  string
+	MountPath  string
+}
+
+type Server struct {
+	deps      Deps
+	dashboard *template.Template
+	settings  *template.Template
+	mux       *http.ServeMux
+}
+
+func New(deps Deps) (*Server, error) {
+	dash, err := template.ParseFS(webui.FS, "templates/layout.html", "templates/dashboard.html")
+	if err != nil {
+		return nil, err
+	}
+	sett, err := template.ParseFS(webui.FS, "templates/layout.html", "templates/settings.html")
+	if err != nil {
+		return nil, err
+	}
+
+	s := &Server{deps: deps, dashboard: dash, settings: sett, mux: http.NewServeMux()}
+	s.routes()
+	return s, nil
+}
+
+func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	s.mux.ServeHTTP(w, r)
+}
+
+func (s *Server) routes() {
+	s.mux.Handle("GET /static/", http.FileServerFS(webui.FS))
+
+	s.mux.HandleFunc("GET /", s.handleDashboard)
+	s.mux.HandleFunc("GET /settings", s.handleSettings)
+
+	s.mux.HandleFunc("GET /health", s.handleHealth)
+	s.mux.HandleFunc("GET /api/disk", s.handleDiskStatus)
+	s.mux.HandleFunc("GET /api/sources", s.handleSources)
+	s.mux.HandleFunc("GET /api/config", s.handleGetConfig)
+	s.mux.HandleFunc("PUT /api/config", s.handlePutConfig)
+	s.mux.HandleFunc("POST /api/copy/start", s.handleCopyStart)
+	s.mux.HandleFunc("POST /api/copy/cancel", s.handleCopyCancel)
+	s.mux.HandleFunc("GET /api/tasks/{id}", s.handleTaskGet)
+}
+
+func (s *Server) handleDashboard(w http.ResponseWriter, r *http.Request) {
+	if r.URL.Path != "/" {
+		http.NotFound(w, r)
+		return
+	}
+	s.render(w, s.dashboard, map[string]any{"Title": "Dashboard", "Page": "dashboard"})
+}
+
+func (s *Server) handleSettings(w http.ResponseWriter, r *http.Request) {
+	s.render(w, s.settings, map[string]any{"Title": "Настройки", "Page": "settings"})
+}
+
+func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {
+	jsonOK(w, map[string]string{"status": "ok"})
+}
+
+func (s *Server) render(w http.ResponseWriter, tmpl *template.Template, data any) {
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	if err := tmpl.ExecuteTemplate(w, "layout", data); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+	}
+}
+
+func jsonOK(w http.ResponseWriter, v any) {
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(v)
+}
+
+func jsonErr(w http.ResponseWriter, code int, msg string) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+	json.NewEncoder(w).Encode(map[string]string{"error": msg})
+}