package main

import (
	"flag"
	"fmt"
	"gopkg.in/yaml.v3"
	"log"
	"net/http"
	"os"
	"time"

	"riedstra.dev/mitch/go-website/page"
)

var VersionString = ""

func VersionPrint() {
	fmt.Println(VersionString)
	os.Exit(0)
}

func loadConf(fn string) (*App, error) {
	fh, err := os.Open(fn)
	if err != nil {
		return nil, err
	}
	dec := yaml.NewDecoder(fh)

	app := &App{}
	err = dec.Decode(app)
	return app, err
}

func main() {
	fl := flag.NewFlagSet("Website", flag.ExitOnError)
	listen := fl.String("l", "0.0.0.0:8001", "Listening address")
	directory := fl.String("d", ".", "Directory to serve.")
	version := fl.Bool("v", false, "Print the version then exit")
	confFn := fl.String("c", "conf.yml", "Location for the config file")
	verbose := fl.Bool("V", false, "Be more verbose ( dump config, etc ) ")
	fl.StringVar(&page.TimeFormat, "T", page.TimeFormat, "Set the page time format, be careful with this")
	defaultIndexPath := "/reIndex"
	indexPath := fl.String("i", defaultIndexPath,
		"Path in which, when called will rebuild the index and clear the cache")
	_ = fl.Parse(os.Args[1:])

	if *version {
		VersionPrint()
	}

	if err := os.Chdir(*directory); err != nil {
		log.Fatal(err)
	}

	app, err := loadConf(*confFn)
	if err != nil {
		log.Println(err)
		app = &App{}
	}

	if app.ReIndexPath == "" || *indexPath != defaultIndexPath {
		app.ReIndexPath = *indexPath
	}
	if app.StaticDirectory == "" {
		app.StaticDirectory = "static"
	}
	if app.FeedPrefix == "" {
		app.FeedPrefix = FeedPrefixDefault
	}

	if *verbose {
		b, _ := yaml.Marshal(app)
		os.Stderr.Write(b)
	}

	srv := &http.Server{
		Handler:      app,
		Addr:         *listen,
		WriteTimeout: 15 * time.Second,
		ReadTimeout:  15 * time.Second,
	}
	log.Fatal(srv.ListenAndServe())
}