/*
------------------------------------------------------------------------------------------------------------------------
####### main ####### Copyright (c) 2021 mls-361 #################################################### MIT License #######
------------------------------------------------------------------------------------------------------------------------
*/

package main

import (
	"os"
	"os/signal"
	"sync"
	"syscall"
	"time"

	"forge.chapril.org/mls-361/application"
	"forge.chapril.org/mls-361/errors"

	"forge.chapril.org/armen/armen/internal/api"
	"forge.chapril.org/armen/armen/internal/cmdline"
	"forge.chapril.org/armen/armen/internal/components"
	"forge.chapril.org/armen/armen/internal/config"
	"forge.chapril.org/armen/armen/internal/crypto"
	"forge.chapril.org/armen/armen/internal/demo"
	"forge.chapril.org/armen/armen/internal/logger"
	"forge.chapril.org/armen/armen/internal/model"
	"forge.chapril.org/armen/armen/internal/router"
	"forge.chapril.org/armen/armen/internal/server"
	"forge.chapril.org/armen/armen/internal/storage"
)

var (
	_version string
	_builtAt string
)

func createComponents(app components.Application) (components.Logger, components.Server, error) {
	config, err := config.Load(app)
	if err != nil {
		return nil, nil, errors.WithMessage(err, "config") /////////////////////////////////////////////////////////////
	}

	logger, err := logger.Build(app, config)
	if err != nil {
		return nil, nil, errors.WithMessage(err, "logger") /////////////////////////////////////////////////////////////
	}

	crypto, err := crypto.Build(app)
	if err != nil {
		return nil, nil, errors.WithMessage(err, "crypto") /////////////////////////////////////////////////////////////
	}

	storage, err := storage.Build(app, config, logger, crypto)
	if err != nil {
		return nil, nil, errors.WithMessage(err, "storage") ////////////////////////////////////////////////////////////
	}

	model, err := model.Build(logger, storage)
	if err != nil {
		return nil, nil, errors.WithMessage(err, "model") //////////////////////////////////////////////////////////////
	}

	if err := demo.Build(app, logger, model); err != nil {
		return nil, nil, errors.WithMessage(err, "demo") ///////////////////////////////////////////////////////////////
	}

	router := router.Build(logger)

	server, err := server.Build(config, logger, router)
	if err != nil {
		return nil, nil, errors.WithMessage(err, "server") /////////////////////////////////////////////////////////////
	}

	api.Build(logger, router, model)

	return logger, server, nil
}

func waitEnd(server components.Server) (*sync.WaitGroup, chan struct{}) {
	endCh := make(chan struct{})
	group := new(sync.WaitGroup)

	group.Add(1)

	go func() { //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
		defer group.Done()
		defer server.Stop()

		sigCh := make(chan os.Signal, 1)
		defer close(sigCh)

		signal.Notify(sigCh, os.Interrupt, syscall.SIGABRT, syscall.SIGQUIT, syscall.SIGTERM)

		select {
		case <-sigCh:
		case <-endCh:
		}
	}()

	return group, endCh
}

func run() error {
	app := application.New("armen", _version, _builtAt)

	if end, err := cmdline.Parse(app); end || err != nil {
		return app.OnError(err)
	}

	logger, server, err := createComponents(app)
	if err != nil {
		return app.OnError(err)
	}

	logger.Info( //:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
		"BEGIN",
		"id", app.ID(),
		"name", app.Name(),
		"version", app.Version(),
		"builtAt", app.BuiltAt().Format("2006-01-02 15:04:05"),
		"pid", os.Getpid(),
	)

	group, endCh := waitEnd(server)

	demo.Start()

	err = server.Start()

	close(endCh)

	demo.Stop()

	group.Wait()

	logger.Info( //:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
		"END",
		"uptime", time.Since(app.StartedAt()).Round(time.Second).String(),
	)

	return app.OnError(err)
}

func main() {
	if run() != nil {
		os.Exit(1)
	}
}

/*
######################################################################################################## @(°_°)@ #######
*/