// This file is part of the happyDomain (R) project.
// Copyright (c) 2020-2024 happyDomain
// Authors: Pierre-Olivier Mercier, et al.
//
// This program is offered under a commercial and under the AGPL license.
// For commercial licensing, contact us at <contact@happydomain.org>.
//
// For AGPL licensing:
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package main

import (
	"fmt"
	"log"
	"math/rand"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/fatih/color"

	"git.happydns.org/happyDomain/api"
	"git.happydns.org/happyDomain/config"
	"git.happydns.org/happyDomain/internal/app"
	"git.happydns.org/happyDomain/storage"

	_ "git.happydns.org/happyDomain/services/providers/google"

	_ "git.happydns.org/happyDomain/storage/leveldb"
)

var (
	Version = "custom-build"
)

func main() {
	var err error

	api.HDVersion = api.Version{
		Version: Version,
	}

	log.Println("This is happyDomain", Version)
	rand.Seed(time.Now().UTC().UnixNano())

	// Disabled colors in dnscontrol corrections
	color.NoColor = true

	// Load and parse options
	var opts *config.Options
	if opts, err = config.ConsolidateConfig(); err != nil {
		log.Fatal(err)
	}

	// Initialize storage
	if s, ok := storage.StorageEngines[opts.StorageEngine]; !ok {
		log.Fatal(fmt.Sprintf("Nonexistent storage engine: %q, please select one of: %v", opts.StorageEngine, storage.GetStorageEngines()))
	} else {
		log.Println("Opening database...")
		if store, err := s(); err != nil {
			log.Fatal("Could not open the database: ", err)
		} else {
			defer store.Close()
			storage.MainStore = store
		}
	}

	if opts.NoAuth {
		log.Println("WARNING: NoAuth option must be used for testing or private use behind another restriction/authentication method.")
	}

	log.Println("Performing database migrations...")
	if err = storage.MainStore.DoMigration(); err != nil {
		log.Fatal("Could not migrate database: ", err)
	}

	// Prepare graceful shutdown
	interrupt := make(chan os.Signal, 1)
	signal.Notify(interrupt, os.Interrupt, syscall.SIGTERM)

	var adminSrv *app.Admin
	if opts.AdminBind != "" {
		adminSrv := app.NewAdmin(opts)
		go adminSrv.Start()
	}

	a := app.NewApp(opts)
	go a.Start()

	// Wait shutdown signal
	<-interrupt

	log.Println("Stopping the service...")
	a.Stop()
	if adminSrv != nil {
		adminSrv.Stop()
	}
	log.Println("Stopped")
}