package app

import (
	"embed"
	"errors"
	"log"
	"os"

	"git.dotya.ml/mirre-mt/pcmt/config"
	"git.dotya.ml/mirre-mt/pcmt/ent"
	"github.com/labstack/echo/v4"
)

type App struct {
	e             *echo.Echo
	logger        *log.Logger
	initialised   bool
	embeds        Embeds
	config        *config.Config
	version       string
	develMode     bool
	jwtkey        string
	encryptionKey string
	dbConnect     string
	db            *ent.Client
}

type Embeds struct {
	templates embed.FS
	assets    embed.FS
}

// Init allows setting App's important fields - once.
func (a *App) Init(version string, conf *config.Config, dbclient *ent.Client) error {
	if !a.initialised {
		e := echo.New()

		a.e = e
		a.logger = log.New(os.Stderr, "*** pcmt:", log.Ldate|log.Ltime|log.Lshortfile)

		a.Logger().Printf("app version: %s", version)
		a.version = version

		a.Logger().Printf("setting app config to %#v", conf)
		a.config = conf
		a.Logger().Printf("app config set to %#v", a.config)

		a.Logger().Print("saving client conn to db")
		a.db = dbclient

		a.initialised = true

		return nil
	}

	return errors.New("ErrAppAlreadyInitialised")
}

// E returns app's *echo.Echo.
func (a *App) E() *echo.Echo {
	return a.e
}

// Logger returns app's *log.Logger.
func (a *App) Logger() *log.Logger {
	return a.logger
}

// SetEmbeds saves the embedded files to application state.
func (a *App) SetEmbeds(templates, assets embed.FS) {
	a.embeds.templates = templates
	a.embeds.assets = assets
}

// SetDevel puts the app in devel mode, which loads browser-sync script in
// templates and expects browser-sync running.
func (a *App) SetDevel() {
	if !a.Config().DevelMode {
		a.Logger().Print("overriding configuration value of DevelMode based on a flag")
		a.Config().DevelMode = true

		return
	}

	a.Logger().Print("setting DevelMode based on a flag")
	a.develMode = true
}

// func (a *App) SetVersion(version string) {
// a.Logger().Printf("setting app version to %s", version)
// a.version = version
// }