#!/usr/bin/env node

import path from 'path'
import fs from 'fs'
import WebSocket from 'ws'

const identifier = 'de.lubiland.ts5.hotkeys'

const XDG_CONFIG_HOME = process.env.XDG_CONFIG_HOME ?? path.join(process.env.HOME, '.config')
const configDirectory = path.join(XDG_CONFIG_HOME, 'ts5-hotkeys')
const keyFile = path.join(configDirectory, 'apikey')

fs.readFile(keyFile, 'utf8', (err, data) => {
    if (!err && data) {
        // connect and authentiate with our existing API key
        const apiKey = data

        const ws = new WebSocket('ws://127.0.0.1:5899')

        ws.onopen = event => {
            console.log('Authenticating...')
            ws.send(JSON.stringify(({
                'type': 'auth',
                'payload': {
                    'identifier': identifier,
                    'content': {
                        'apiKey': apiKey
                    }
                }
            })))
        }

        ws.onmessage = event => {
            if (JSON.parse(event.data).type === 'auth') {
                console.log('Triggering button event...')

                const buttonName = process.argv[2]

                let buttonEvent = {
                    "type": "buttonPress",
                    "payload": {
                        "button": buttonName
                    }
                }

                // send key-down and key-up event
                buttonEvent.payload.state = true
                console.log(buttonEvent)
                ws.send(JSON.stringify(buttonEvent))

                buttonEvent.payload.state = false
                console.log(buttonEvent)
                ws.send(JSON.stringify(buttonEvent))


                ws.close()
            }
        }
    } else {
        // connect and do an initial app registration
        const ws = new WebSocket('ws://127.0.0.1:5899')

        ws.onopen = event => {
            console.log('Registering app...')
            ws.send(JSON.stringify(({
                'type': 'auth',
                'payload': {
                    'identifier': identifier,
                    'version': '0.0.1',
                    'name': 'External Hotkeys',
                    'description': 'External Hotkeys',
                    'content': {
                        'apiKey': ''
                    }
                }
            })))
        }

        ws.onmessage = event => {
            if (JSON.parse(event.data).type === 'auth') {
                const apiKey = JSON.parse(event.data).payload.apiKey

                console.log('Writing API key...')
                fs.mkdir(configDirectory, {recursive: true}, (err, path) => {
                    if (!err) {
                        fs.writeFile(keyFile, apiKey, err => {
                            if (err) {
                                throw err
                            }
                        })
                    } else if (err) {
                        throw err
                    }
                })

                ws.close()
            }
        }
    }
})