package main

import (
	"fmt"
	"log"
	"log/slog"
	"net/http"
	"os"
	"strings"

	"gitea.leeworks.dev/0xwheatyz/gitea-mobile/internal/config"
	"gitea.leeworks.dev/0xwheatyz/gitea-mobile/internal/handlers"
	"gitea.leeworks.dev/0xwheatyz/gitea-mobile/internal/middleware"
)

func main() {
	// Set up structured logging.
	slog.SetDefault(slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
		Level: slog.LevelInfo,
	})))

	cfg, err := config.Load()
	if err != nil {
		log.Fatalf("configuration error: %v", err)
	}

	// Determine if cookies should be marked Secure (disable for local dev).
	secureCookies := !strings.HasPrefix(cfg.ListenAddr, "localhost") &&
		!strings.HasPrefix(cfg.ListenAddr, "127.0.0.1")

	mux := http.NewServeMux()

	// Health endpoint (no auth required).
	mux.HandleFunc("GET /health", func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusOK)
		fmt.Fprintln(w, "ok")
	})

	// Settings handler.
	settingsHandler := &handlers.SettingsHandler{
		SessionSecret: cfg.SessionSecret,
		SecureCookies: secureCookies,
	}
	mux.HandleFunc("/settings", settingsHandler.ServeHTTP)

	// Static file server.
	mux.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static"))))

	// Placeholder dashboard (will be replaced in issue #4/#5).
	mux.HandleFunc("GET /", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/html; charset=utf-8")
		fmt.Fprintln(w, "<h1>Gitea Mobile</h1><p>Dashboard coming soon.</p>")
	})

	// Apply middleware chain: logging -> auth.
	var handler http.Handler = mux
	handler = middleware.Auth(cfg.SessionSecret)(handler)
	handler = middleware.Logging()(handler)

	slog.Info("server starting", "addr", cfg.ListenAddr, "gitea_url", cfg.GiteaURL)
	if err := http.ListenAndServe(cfg.ListenAddr, handler); err != nil {
		log.Fatalf("server error: %v", err)
	}
}