package gui

import (
	"encoding/json"
	"os"
	"path/filepath"
)

type Configuration struct {
	Host        string `json:"host"`
	Port        uint64 `json:"port"`
	Password    string `json:"password"`
	IsConnected bool   `json:"connected"`
	Panel       string `json:"panel"`
	SortField   string `json:"sortField"`
	SortDesc    bool   `json:"sortDesc"`
	ItemSize    int    `json:"itemSize"`
}

func readConfig(config *Configuration) error {
	filename, filenameErr := getConfigFile()
	if filenameErr != nil {
		return filenameErr
	}

	file, fileErr := os.Open(filename)
	if fileErr != nil {
		return fileErr
	}
	defer file.Close()

	return json.NewDecoder(file).Decode(config)
}

func writeConfig(config *Configuration) error {
	filename, filenameErr := getConfigFile()
	if filenameErr != nil {
		return filenameErr
	}

	file, fileErr := os.Create(filename)
	if fileErr != nil {
		return fileErr
	}
	defer file.Close()

	encoder := json.NewEncoder(file)
	encoder.SetIndent("", "\t")

	return encoder.Encode(&config)
}

func getConfigFile() (string, error) {
	configDir, configDirErr := getConfigDir()
	if configDirErr != nil {
		return "", configDirErr
	}

	createErr := ensureConfigDirExists(configDir)
	if createErr != nil {
		return "", createErr
	}

	return filepath.Join(configDir, "config.json"), nil
}

func ensureConfigDirExists(folder string) error {
	return os.MkdirAll(folder, 0o750)
}

func getConfigDir() (string, error) {
	configDir, configDirErr := os.UserConfigDir()
	if configDirErr != nil {
		return "", configDirErr
	}

	return filepath.Join(configDir, "mcg"), nil
}