// main.go - Main application
package main

import (
	"encoding/json"
	"flag"
	"fmt"
	"os"
	"os/signal"
	"syscall"
	"time"
)

func main() {
	var (
		location = flag.String("place", "Helsinki", "Location for the forecast")
		tuiMode  = flag.Bool("tui", true, "Run in TUI mode")
		jsonMode = flag.Bool("json", false, "Output as JSON")
		days     = flag.Int("days", 1, "Number of days to forecast (1-3)")
		refresh  = flag.Int("refresh", 0, "Refresh interval in minutes (0 for no refresh)")
	)
	flag.Parse()

	// Get initial forecast
	client := NewFMIClient()
	response, err := client.GetForecast(*location)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
		os.Exit(1)
	}

	// JSON output mode
	if *jsonMode {
		jsonData, err := json.MarshalIndent(response, "", "  ")
		if err != nil {
			fmt.Fprintf(os.Stderr, "Error marshaling JSON: %v\n", err)
			os.Exit(1)
		}
		fmt.Println(string(jsonData))
		return
	}

	// TUI mode
	if *tuiMode {
		model := NewModel(response, *location, *days)
		if *refresh > 0 {
			model.SetRefreshInterval(time.Duration(*refresh) * time.Minute)
		}

		// Handle interrupts
		sigChan := make(chan os.Signal, 1)
		signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
		go func() {
			<-sigChan
			model.Quit()
		}()

		// Run the TUI
		if err := model.Run(); err != nil {
			fmt.Fprintf(os.Stderr, "Error running TUI: %v\n", err)
			os.Exit(1)
		}
	}
}