package main

import (
	"context"
	"fmt"
	"net"
	"os"

	v1 "git.badhouseplants.net/softplayer/softplayer-backend/api/v1"
	"git.badhouseplants.net/softplayer/softplayer-backend/internal/helpers/email"
	"git.badhouseplants.net/softplayer/softplayer-go-proto/pkg/accounts"
	applications_proto "git.badhouseplants.net/softplayer/softplayer-go-proto/pkg/applications"
	email_proto "git.badhouseplants.net/softplayer/softplayer-go-proto/pkg/email"
	"git.badhouseplants.net/softplayer/softplayer-go-proto/pkg/environments"
	"github.com/alecthomas/kong"
	"github.com/go-logr/logr"
	"github.com/go-logr/zapr"
	"go.uber.org/zap"
	"google.golang.org/grpc"
	"google.golang.org/grpc/reflection"
	ctrl "sigs.k8s.io/controller-runtime"
)

type Serve struct {
	Port         int64  `short:"p" env:"SOFTPLAYER_PORT" default:"4020"`
	Host         string `env:"SOFTPLAYER_HOST" default:"0.0.0.0"`
	HashCost     int16  `env:"SOFTPLAYER_HASH_COST" default:"1"`
	Reflection   bool   `env:"SOFTPLAYER_REFLECTION" default:"false"`
	DevMode      bool   `env:"SOFTPLAYER_DEV_MODE" default:"false"`
	SmtpHost     string `env:"SOFTPLAYER_SMTP_HOST"`
	SmtpPort     string `env:"SOFTPLAYER_SMTP_PORT" default:"587"`
	SmtpFrom     string `env:"SOFTPLAYER_SMTP_FROM" default:"overlord@badhouseplants.net"`
	SmtpPassword string `env:"SOFTPLAYER_SMTP_PASSWORD"`
	DownloadDir  string `env:"SOFTPLAYER_DOWNLOAD_DIR" default:"/tmp/softplayer"`
}

var CLI struct {
	Serve Serve `cmd:"" help:"Start the grpc server"`
}

func main() {
	ctx := kong.Parse(&CLI)
	switch ctx.Command() {
	case "serve":
		if err := server(CLI.Serve); err != nil {
			panic(err)
		}
	default:
		panic(ctx.Command())
	}
}

func server(params Serve) error {
	// Make sure the download dir exists
	var log logr.Logger

	zapLog, err := zap.NewDevelopment()
	if err != nil {
		panic(fmt.Sprintf("who watches the watchmen (%v)?", err))
	}
	log = zapr.NewLogger(zapLog)

	if err := os.MkdirAll(params.DownloadDir, 0777); err != nil {
		log.Error(err, "Coulnd't create a download dir")
		return err
	}

	// Init a logger

	controller, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{})
	if err != nil {
		log.Error(err, "Coulnd't start a kube manager")
		return err
	}

	// TODO: Handle the error
	go func() {
		if err := controller.Start(context.Background()); err != nil {
			panic(err)
		}
	}()

	emailConfig := email.EmailConf{
		From:     params.SmtpFrom,
		Password: params.SmtpPassword,
		SmtpHost: params.SmtpHost,
		SmtpPort: params.SmtpPort,
	}

	address := fmt.Sprintf("%s:%d", params.Host, params.Port)
	lis, err := net.Listen("tcp", address)
	if err != nil {
		return err
	}
	grpcServer := grpc.NewServer()
	if params.Reflection {
		reflection.Register(grpcServer)
	}

	environments.RegisterEnvironmentsServer(grpcServer, v1.NewapiGrpcImpl(controller, log))
	accounts.RegisterAccountsServer(grpcServer, v1.NewAccountRPCImpl(controller, params.HashCost, &emailConfig, params.DevMode))
	email_proto.RegisterEmailValidationServer(grpcServer, v1.InitEmailServer(controller, &emailConfig, params.DevMode))
	applications_proto.RegisterApplicationsServer(grpcServer, v1.NewApplicationsGrpcImpl(controller, log))

	if err := grpcServer.Serve(lis); err != nil {
		return err
	}

	return nil
}