package main

import (
	"fmt"
	"os"

	"gopkg.in/ini.v1"
)

func main() {
	ini.PrettyFormat = false
	cfg, err := ini.LoadSources(ini.LoadOptions{
		SpaceBeforeInlineComment: false,
		IgnoreInlineComment:      true,
	}, "my.ini")
	if err != nil {
		fmt.Printf("Fail to read file: %v", err)
		os.Exit(1)
	}
	// Classic read of values, default section can be represented as empty string
	cfg.Section("").Comment = "#include extensions_trigger.conf"
	fmt.Println("App Mode:", cfg.Section("").Key("app_mode").String())
	fmt.Println("Data Path:", cfg.Section("paths").Key("data").String())

	// Let's do some candidate value limitation
	fmt.Println("Server Protocol:",
		cfg.Section("server").Key("protocol").In("http", []string{"http", "https"}))
	// Value read that is not in candidates will be discarded and fall back to given default value
	fmt.Println("Email Protocol:",
		cfg.Section("server").Key("protocol").In("smtp", []string{"imap", "smtp"}))

	// Try out auto-type conversion
	fmt.Printf("Port Number: (%[1]T) %[1]d\n", cfg.Section("server").Key("http_port").MustInt(9999))
	fmt.Printf("Enforce Domain: (%[1]T) %[1]v\n", cfg.Section("server").Key("enforce_domain").MustBool(false))

	// Now, make some changes and save it
	cfg.Section("").Key("app_mode").SetValue("production")
	cfg.SaveTo("my.ini")
}