package ui

import (
	"net/http"
	"path/filepath"
)

// Handler serves the workspace launcher UI.
type Handler struct {
	appDir string
}

// NewHandler creates a UI handler that serves the launcher and static assets.
func NewHandler(appDir string) *Handler {
	return &Handler{
		appDir: appDir,
	}
}

// RegisterRoutes mounts the public UI routes on the given mux.
func (h *Handler) RegisterRoutes(mux *http.ServeMux, authGate func(http.Handler) http.Handler) {
	// Static assets (manifest.json, sw.js, icons)
	staticDir := filepath.Join(h.appDir, "static")
	staticHandler := http.FileServer(http.Dir(staticDir))
	mux.Handle("GET /static/", http.StripPrefix("/static", staticHandler))

	// Launcher page — protected by OIDC auth gate
	mux.Handle("GET /", authGate(http.HandlerFunc(h.launcherPage)))
}

// launcherPage renders the main workspace landing page.
func (h *Handler) launcherPage(w http.ResponseWriter, r *http.Request) {
	// Only handle root path, not all paths
	if r.URL.Path != "/" {
		http.NotFound(w, r)
		return
	}

	// Get user info from session (set by auth middleware)
	// For now, render without user name (OIDC provides this later)
	userName := ""

	apps := DefaultApps()
	component := LauncherPage(userName, apps)
	component.Render(r.Context(), w)
}