package app

import (
	"bitbucket.org/BlackBroker/heruvym/dal"
	"bitbucket.org/BlackBroker/heruvym/middleware"
	"bitbucket.org/BlackBroker/heruvym/service"
	"bitbucket.org/BlackBroker/heruvym/version"
	"context"
	"errors"
	"fmt"
	"github.com/BlackBroker/trashlog/wrappers/zaptg"
	"github.com/skeris/appInit"
	"github.com/skeris/authService/router"
	"go.uber.org/zap/zapcore"
	"net/http"
	"os"
	"os/signal"
	"syscall"

	"github.com/themakers/hlog"
	"go.uber.org/zap"
)

type App struct {
	err    chan error
	logger *zap.Logger
}

const (
	ENV     = "env"
	DEFAULT = "default"
)

type Options struct {
	MongoURI            string `env:"BB_MONGO_URI" default:"mongodb://localhost:27017"`
	NumberPortLocal     string `env:"BB_PORT" default:"1488"`
	LoggerDevMode       bool   `env:"BB_IS_PROD" default:"false"`
}

var (
	errInvalidOptions = errors.New("invalid options")
)

var _ appInit.CommonApp = (*App)(nil)

type InfoSvcStarted struct{}
type InfoSvcReady struct{}
type InfoSvcShutdown struct{
	Signal string
}
type ErrorStoring struct{
	Err error
	Uri string
}
type ErrorCanNotServe struct{
	Err error
}

var zapOptions = []zap.Option{
	zap.AddCaller(),
	zap.AddCallerSkip(2),
	zap.AddStacktrace(zap.ErrorLevel),
}

func New(ctx context.Context, opts interface{}) (appInit.CommonApp, error) {

	var (
		err       error
		zapLogger *zap.Logger
		errChan   = make(chan error)
		options   Options
		ok        bool
	)

	if options, ok = opts.(Options); !ok {
		return App{}, errInvalidOptions
	}

	if options.LoggerDevMode {
		zapLogger, err = zap.NewDevelopment(zapOptions...)
		if err != nil {
			return nil, err
		}
	} else {
		zapLogger, err = zap.NewProduction(zapOptions...)
		if err != nil {
			return nil, err
		}
	}

	zapLogger = zapLogger.With(
		zap.String("SvcCommit", version.Commit),
		zap.String("SvcVersion", version.Release),
		zap.String("SvcBuildTime", version.BuildTime),
	)

	tl, err := zaptg.NewCore(
		ctx,
		zap.ErrorLevel,
		"1408111289:AAHfWZRiBQRncb2gl2LtU8OeASjfJi4e8YE",
		version.Release,
		version.Commit,
		0,
		-1001230000451,
	)
	if err != nil {
		panic(err)
	}

	zapLogger = zapLogger.WithOptions(zap.WrapCore(func(core zapcore.Core) zapcore.Core {
		return zapcore.NewTee(core, tl)
	}))

	logger    := hlog.New(zapLogger)
	logger.Emit(InfoSvcStarted{})

	apiMux := router.NewRouter(http.NewServeMux())

	database, err := dal.New(
		ctx,
		options.MongoURI,
		"support",
		logger,
		)
	if err != nil {
		return nil, err
	}

	heruvym := service.New(database, logger)

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

	server := &http.Server{
		Handler: http_middleware.Wrap(heruvym.Register(apiMux), zapLogger),
		Addr:    fmt.Sprintf(":%s", options.NumberPortLocal),
	}

	go func() {
		killSignal := <-interrupt
		switch killSignal {
		case os.Interrupt:
			logger.Emit(InfoSvcShutdown{
				Signal: "Interrupt",
			})
		case syscall.SIGTERM:
			logger.Emit(InfoSvcShutdown{
				Signal: "Terminate",
			})
		}

		if err := server.Shutdown(ctx); err != nil {
			panic(err)
		}
	}()

	logger.Emit(InfoSvcStarted{})
	if err := server.ListenAndServe(); err != nil {
		logger.Emit(ErrorCanNotServe{
			Err: err,
		})
		return nil, err
	}

	return &App{
		logger: zapLogger,
		err:    errChan,
	}, nil
}

func (a App) GetLogger() *zap.Logger {
	return a.logger
}

func (a App) GetErr() chan error {
	return a.err
}