package config

import (
	"encoding/json"
	"os"
)

type GeneralConfig struct {
	UserAgent          string `json:"userAgent"`
	FetchMessagesLimit int    `json:"fetchMessagesLimit"`
	Mouse              bool   `json:"mouse"`
	Notifications      bool   `json:"notifications"`
}

type KeybindingsConfig struct {
	FocusGuildsList         []string `json:"focusGuildsList"`
	FocusChannelsTreeView   []string `json:"focusChannelsTreeView"`
	FocusMessagesTextView   []string `json:"focusMessagesTextView"`
	FocusMessageInputField  []string `json:"focusMessageInputField"`
	FocusMessageActionsList []string `json:"focusMessageActionsList"`

	SelectPreviousMessage []string `json:"selectPreviousMessage"`
	SelectNextMessage     []string `json:"selectNextMessage"`
	SelectFirstMessage    []string `json:"selectFirstMessage"`
	SelectLastMessage     []string `json:"selectLastMessage"`
}

type Config struct {
	Keybindings KeybindingsConfig `json:"keybindings"`
	General     GeneralConfig     `json:"general"`
}

func New() *Config {
	return &Config{
		General: GeneralConfig{
			UserAgent:          "Mozilla/5.0 (X11; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0",
			FetchMessagesLimit: 50,
			Mouse:              true,
			Notifications:      true,
		},
		Keybindings: KeybindingsConfig{
			FocusGuildsList:         []string{"Alt+Rune[g]"},
			FocusChannelsTreeView:   []string{"Alt+Rune[t]"},
			FocusMessagesTextView:   []string{"Alt+Rune[m]"},
			FocusMessageInputField:  []string{"Alt+Rune[i]"},
			FocusMessageActionsList: []string{"Alt+Rune[a]"},

			SelectPreviousMessage: []string{"Up"},
			SelectNextMessage:     []string{"Down"},
			SelectFirstMessage:    []string{"Home"},
			SelectLastMessage:     []string{"End"},
		},
	}
}

func (c *Config) Load() {
	configPath, err := os.UserConfigDir()
	if err != nil {
		panic(err)
	}

	configPath += "/discordo.json"
	f, err := os.OpenFile(configPath, os.O_CREATE|os.O_RDWR, os.ModePerm)
	if err != nil {
		panic(err)
	}

	fi, err := f.Stat()
	if err != nil {
		panic(err)
	}
	// If the size of the file is zero (the file is empty), write the default configuration to the file.
	if fi.Size() == 0 {
		e := json.NewEncoder(f)
		e.SetIndent("", "\t")

		c = New()
		err = e.Encode(c)
		if err != nil {
			panic(err)
		}
	} else {
		err = json.NewDecoder(f).Decode(c)
		if err != nil {
			panic(err)
		}
	}
}