package main

import (
	"context"
	"log/slog"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"codespace/internal/api"
	"codespace/internal/process"
	"codespace/internal/service"
	"codespace/internal/workspace"
	"codespace/pkg/config"
	"codespace/pkg/logger"
)

func main() {
	startupLogger := slog.New(slog.NewJSONHandler(os.Stderr, nil))

	cfg, err := config.Load("configs/config.yaml")
	if err != nil {
		startupLogger.Error("failed to load config", "error", err)
		os.Exit(1)
	}

	lg, err := logger.New(cfg.Log)
	if err != nil {
		startupLogger.Error("failed to initialize logger", "error", err)
		os.Exit(1)
	}

	workspaces := workspace.NewLocalManager(cfg.Workspace.Root)
	processes := process.NewManager(cfg.Process.OpenCodeCommand)

	workspaceSvc := service.NewWorkspaceService(workspaces, processes, lg)
	fileSvc := service.NewFileService(workspaces, cfg.File.MaxWriteBytes)
	processSvc := service.NewProcessService(workspaces, processes, lg)

	router := api.NewRouter(workspaceSvc, fileSvc, processSvc, lg, cfg.Gin.Mode)

	server := &http.Server{
		Addr:           cfg.Server.Addr,
		Handler:        router,
		ReadTimeout:    cfg.Server.ReadTimeout,
		WriteTimeout:   cfg.Server.WriteTimeout,
		IdleTimeout:    cfg.Server.IdleTimeout,
		MaxHeaderBytes: cfg.Server.MaxHeaderBytes,
	}

	lg.Info("server starting",
		"addr", cfg.Server.Addr,
		"read_timeout", cfg.Server.ReadTimeout.String(),
		"write_timeout", cfg.Server.WriteTimeout.String(),
		"idle_timeout", cfg.Server.IdleTimeout.String(),
		"max_header_bytes", cfg.Server.MaxHeaderBytes,
	)

	go func() {
		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			lg.Error("server failed", "error", err)
			os.Exit(1)
		}
	}()

	quit := make(chan os.Signal, 1)
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
	<-quit

	lg.Info("server shutting down")
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	if err := server.Shutdown(ctx); err != nil {
		lg.Error("server forced shutdown", "error", err)
		os.Exit(1)
	}
}