package main

import (
	"context"
	"fmt"
	"log"
	"os"
	"os/signal"
	"strconv"
	"syscall"
	"time"

	"git.kling.dev/jared/WorkoutTrackerAPI/internal/database"
	"git.kling.dev/jared/WorkoutTrackerAPI/internal/server"
)

func main() {
	dbHost := os.Getenv("DB_HOST")
	dbPort := os.Getenv("DB_PORT")
	dbUser := os.Getenv("DB_USER")
	dbPassword := os.Getenv("DB_PASSWORD")
	dbName := os.Getenv("DB_NAME")
	webPort := os.Getenv("PORT")

	if dbHost == "" || dbPort == "" || dbUser == "" || dbPassword == "" || dbName == "" {
		log.Fatal("Not all database params are set")
	}
	dbPortParsed, err := strconv.ParseInt(dbPort, 10, 64)
	if err != nil {
		log.Fatal("Unable to parse db port to an int")
	}

	if webPort == "" {
		webPort = "8080"
	}
	webPortParsed, err := strconv.ParseInt(webPort, 10, 64)
	if err != nil {
		log.Fatal("Unable to parse web port to an int")
	}

	dbConn, err := database.NewConnection(database.Config{
		Host:     dbHost,
		Port:     int(dbPortParsed),
		User:     dbUser,
		Password: dbPassword,
		DBName:   dbName,
	})

	if err != nil {
		log.Fatal("Failed to connect to database: ", err)
	}

	defer dbConn.Close()

	jwtSecret := os.Getenv("JWT_SECRET")

	if jwtSecret == "" {
		log.Fatal("Unable to determine the JWT_SECRET")
	}

	s := server.NewServer(dbConn, jwtSecret)

	go func() {
		fmt.Printf("Server listening on port %d\n", webPortParsed)
		webAddr := fmt.Sprintf(":%d", webPortParsed)
		s.Start(webAddr)
	}()

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

	log.Println("Shutting down server...")

	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	if err := s.Shutdown(ctx); err != nil {
		log.Fatal("Server forced to shutdown:", err)
	}

	log.Println("Server exited")
}