package main

import (
	"fmt"
	"os"
	"os/signal"
	"sync"

	"website/internal/log"
	"website/internal/server"

	"github.com/ardanlabs/conf/v3"
	"github.com/pkg/errors"
)

var (
	CommitSHA string
	ShortSHA  string
)

func main() {
	runtimeConfig := server.Config{}
	help, err := conf.Parse("", &runtimeConfig)
	if err != nil {
		if errors.Is(err, conf.ErrHelpWanted) {
			fmt.Println(help)
			os.Exit(1)
		}
		panic("parsing runtime configuration" + err.Error())
	}
	log.Configure(!runtimeConfig.Development)

	if runtimeConfig.Development {
		tmpdir, err := os.MkdirTemp("", "website")
		if err != nil {
			log.Fatal("could not create temporary directory to build website: %v", err)
		}
		runtimeConfig.Root = tmpdir
		defer os.RemoveAll(tmpdir)
	}

	c := make(chan os.Signal, 2)
	signal.Notify(c, os.Interrupt)
	sv, err := server.New(&runtimeConfig)
	if err != nil {
		log.Fatal("error setting up server", "error", err)
	}
	wg := &sync.WaitGroup{}
	wg.Add(1)
	go func() {
		defer wg.Done()
		sig := <-c
		log.Info("signal captured", "sig", sig)
		<-sv.Stop()
		log.Debug("server stopped")
	}()

	sErr := make(chan error)
	wg.Add(1)
	go func() {
		defer wg.Done()
		sErr <- sv.Start()
	}()
	log.Info("server listening", "address", sv.Addr)

	err = <-sErr
	if err != nil {
		// Error starting or closing listener:
		log.Fatal("error", "error", err)
	}
	wg.Wait()
}