// config.go

//

// This file implements the configuration part for when you need the API

// key to modify things in the Mastodon configuration and manage measurements.

package gondole

import (

	"fmt"

	"io/ioutil"

	"os"

	"path/filepath"

	"strings"

	"github.com/naoina/toml"

)

/*

Assume the application is registered if $HOME/.config/<gondole>/config.toml already exist

 */

const (

	DefaultName = "config.toml"

)

// Config holds our parameters

type Config struct {

	ID           int64

	Name         string

	BearerToken  string

}

// Check the parameter for either tag or filename

func checkName(file string) (str string) {

	// Full path, MUST have .toml

	if bfile := []byte(file); bfile[0] == '/' {

		if !strings.HasSuffix(file, ".toml") {

			str = ""

		} else {

			str = file

		}

		return

	}

	// If ending with .toml, take it literally

	if strings.HasSuffix(file, ".toml") {

		str = file

		return

	}

	// Check for tag

	if !strings.HasSuffix(file, ".toml") {

		// file must be a tag so add a "."

		str = filepath.Join(os.Getenv("HOME"),

			fmt.Sprintf(".%s", file),

			"config.toml")

	}

	return

}

// LoadConfig reads a file as a TOML document and return the structure

func LoadConfig(name, redirectURL string) (c *Config, err error) {

	c = new(Config)

	sFile := filepath.Join(os.Getenv("HOME"),

		".config",

		"gondole",

		DefaultName,

	)

	// Check if there is any config file

	if _, err := os.Stat(sFile); err != nil {

		// No config file is no error

	} else {

		// Read it

		buf, err := ioutil.ReadFile(sFile)

		if err != nil {

			return c, fmt.Errorf("Can not read %s", sFile)

		}

		err = toml.Unmarshal(buf, &c)

		if err != nil {

			return c, fmt.Errorf("Error parsing toml %s: %v",

				sFile, err)

		}

	}

	return c, nil

}

func WriteConfig(c * Config) (err error) {

	sc, err := toml.Marshal(c)

	if err != nil {

	}

	err = ioutil.WriteFile(filepath.Join(os.Getenv("HOME"), ".config", "gondole", DefaultName), sc, 0600)

	return

}