package web

import (
	"fmt"
	"net/http"

	"github.com/spf13/viper"
	"go.uber.org/zap"
)

type configObj struct {
	logger   *zap.Logger
	port     int
	imageDir string
}

var config = configObj{}

// Run starts up the webserver part of hasshelper. It writes to exitch if
// the webserver ends unexpectedly. Config values will be read from viper.
func Run(rootLogger *zap.Logger, exitch chan bool) {
	config.logger = rootLogger.Named("web")
	config.port = viper.GetInt("webserver_port")
	config.imageDir = viper.GetString("image_dir")

	http.Handle("/img/", http.StripPrefix("/img", imageHandler()))
	http.HandleFunc("/randimg/", randomImageFunc)
	var logger = config.logger.Sugar()

	logger.Infow("Webserver startup",
		"port", config.port,
		"imageDir", config.imageDir)

	addr := fmt.Sprintf(":%d", config.port)

	if err := http.ListenAndServe(addr, nil); err != nil {
		logger.Errorf("Webserver fatal error: %s", err)
	} else {
		logger.Info("webserver shutting down")
	}
	exitch <- true
}