// Used to define and load this application's specific configuration
package config

import (
	"gopkg.in/yaml.v2"
	"io/ioutil"
	"os"
	"os/exec"
)

type Config struct {
	SteamRepositories []string `yaml:"SteamRepositories"`
	DefaultRepository string   `yaml:"DefaultRepository"`
	Listen            string
}

var configFilename string = "steam-export.yml"

// By default it reads 'config.yml' in the current directory
func LoadConfig() (*Config, error) {
	c := &Config{}
	err := c.ReadDefaultConfig()
	return c, err
}

func (c *Config) ReadConfig(cfg string) error {
	contents, err := ioutil.ReadFile(cfg)
	if err != nil {
		return err
	}
	return yaml.Unmarshal([]byte(contents), c)
}

func checkConfigFile(cf string) error {
	// Check if our config file exists, or create it
	if _, err := os.Stat(cf); err != nil {
		if f, err := os.Create(cf); err != nil {
			return err
		} else {
			f.WriteString(`
---
listen: 0.0.0.0:9413
# Repositories that you want to expose on the web server
SteamRepositories:
  # We're ideally looking for the full path to the steamapps folder
  # On windows you're going to escape the slashes
  - "C:\\Program Files (x86)\\Steam\\steamapps"
  # - "/usr/mitch/SteamGames/steamapps"

# This defaults to:
#  Only change this if your default Steam library is different than the Steam default
# DefaultRepository: "/usr/mitch/SteamGames/steamapps"
# DefaultRepository: "Z:\\SteamGames\\steamapps"
`)
			f.Close()
		}
	}
	return nil
}

func (c *Config) ReadDefaultConfig() error {
	if err := c.ReadConfig(configFilename); err != nil {
		if err = checkConfigFile(fn); err != nil {
			return err
		}
		return c.ReadConfig(fn)
	}
	return nil
}

func EditDefaultConfig(e string) error {
	if e != "" {
		editor = e
	}

	if _, err := os.Stat(configFilename); err != nil {
		if _, err := os.Stat(fn); err != nil {
			return err
		}
		c := exec.Command(editor, fn)
		c.Stdout = os.Stdout
		c.Stdin = os.Stdin
		c.Stderr = os.Stderr
		return c.Run()
	}
	cmd := exec.Command(editor, configFilename)
	return cmd.Run()

}