package config

import (
	l "log"
	"os"
	"time"

	"example.com/golang-base/internal/log"
)

func Init() Config {
	cfg := New()

	// parse config structure
	cfgInfo, err := getStructInfo(&cfg)
	if err != nil {
		l.Fatalf("Unable to initialize program: %v", err)
	}

	// get command line flags
	if err := cfg.parseFlags(cfgInfo); err != nil {
		l.Fatalf("Unable to initialize program: %v", err)
	}

	// set logging Level
	log.Init("text")
	log.SetNumericLevel(cfg.LogLevel)

	// set timezone & time format
	cfg.TZUTC, _ = time.LoadLocation("UTC")
	cfg.TZLocal, err = time.LoadLocation(cfg.TimeZoneLocal)
	if err != nil {
		log.Error("Unable to parse timezone string", "error", err)
		os.Exit(1)
	}

	// print running config
	printRunningConfig(&cfg, cfgInfo)

	// return configuration
	return cfg
}