package main

import (
	"context"
	"embed"
	"fmt"
	"log"
	"os"
	"os/signal"
	"strconv"
	"strings"

	"github.com/getsentry/sentry-go"
	"github.com/joho/godotenv"
	"gorm.io/driver/postgres"
	"gorm.io/gorm"

	"github.com/rjNemo/rentease/config"
	"github.com/rjNemo/rentease/internal/auth"
	"github.com/rjNemo/rentease/internal/booking"
	"github.com/rjNemo/rentease/internal/calendar"
	"github.com/rjNemo/rentease/internal/pdf"
	"github.com/rjNemo/rentease/internal/server"
)

//go:embed assets
var static embed.FS

func main() {
	ctx := context.Background()
	_ = godotenv.Load()

	if err := run(ctx, os.Getenv); err != nil {
		fmt.Fprintf(os.Stderr, "%s\n", err)
		os.Exit(1)
	}
}

func run(c context.Context, getEnv func(string) string) error {
	ctx, cancel := signal.NotifyContext(c, os.Interrupt)
	defer cancel()

	// init sentry
	if err := sentry.Init(sentry.ClientOptions{
		Dsn:                getEnv("SENTRY_DSN"),
		EnableTracing:      true,
		TracesSampleRate:   1.0,
		ProfilesSampleRate: 1.0,
	}); err != nil {
		return fmt.Errorf("error initializing sentry %s", err)
	}

	// init database
	db, err := gorm.Open(postgres.Open(getEnv("DATABASE_URL")), &gorm.Config{})
	if err != nil {
		return fmt.Errorf("error connecting to the database %s", err)
	}

	// build booking service
	err = db.AutoMigrate(&booking.Booking{}, &booking.BookingRequest{}, &booking.Item{})
	if err != nil {
		return fmt.Errorf("error migrating the database %s", err)
	}

	// build pdf service
	ps, err := pdf.NewPdfService(
		getEnv("HTMLDOCS_PROJECT_ID"),
		getEnv("HTMLDOCS_REPORT_PROJECT_ID"),
		getEnv("HTMLDOCS_URL"),
		getEnv("HTMLDOCS_KEY"),
	)
	if err != nil {
		return fmt.Errorf("error starting pdf service %s", err)
	}

	// build authentication service
	as, err := auth.NewService(
		getEnv("SESSION_SECRET"),
		getEnv("ADMIN"),
		getEnv("ADMIN_SECRET"),
		getEnv("API_KEY"),
	)
	if err != nil {
		return fmt.Errorf("error starting auth service %s", err)
	}

	// build calendar service
	cs, err := calendar.NewService(
		ctx,
		getEnv("CALENDAR_CREDENTIALS"),
		calendar.WithCalendar("T2", getEnv("CALENDAR_ID_T2")),
		calendar.WithCalendar("T3", getEnv("CALENDAR_ID_T3")),
	)
	if err != nil {
		log.Fatalf("error starting calendar service %s", err)
	}

	// starting server
	p := getEnv("PORT")
	port, err := strconv.Atoi(p)
	if err != nil {
		return fmt.Errorf("error parsing PORT env %s", err)
	}

	ogs := getEnv("ORIGINS")
	origins := strings.Split(ogs, ",")

	srv, err := server.New(
		booking.NewService(db), // TODO: should validate the booking service building
		as,
		ps,
		cs,
		config.NewHost(), // TODO: move to the database at some point
		server.WithPort(port),
		server.WithFileSystem(static),
		server.WithDebug(strings.ToLower(getEnv("DEBUG")) == "true"),
		server.WithSecretKey(getEnv("SECRET_KEY")),
		server.WithOrigins(origins),
	)
	if err != nil {
		return fmt.Errorf("error starting server %s", err)
	}

	srv.Start(ctx)
	return nil
}