const rp = require('request-promise')
const Promise = require('bluebird')
const utils = require('./utils')
class Bravia {
	constructor(ip, secret) {
		Object.assign(this, {ip, secret, cmd_cache: {}})
	}
	request(options) {
		options.url = `http://${this.ip}${options.path}`
		options.headers = options.headers || {}
		options.headers['X-Auth-PSK'] = this.secret
		return rp.post(options)
	}
	sendIRCC(ircc) {
		const body = `<?xml version="1.0"?>
	    <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"> <s:Body>
	      <u:X_SendIRCC xmlns:u="urn:schemas-sony-com:service:IRCC:1">
	        <IRCCCode>${ircc}</IRCCCode>
	      </u:X_SendIRCC>
	    </s:Body></s:Envelope>`
	    return this.request({
		    path: '/sony/IRCC', body, headers: {
		      'Content-Type': 'text/xml charset=UTF-8',
		      'SOAPACTION': '"urn:schemas-sony-com:service:IRCC:1#X_SendIRCC"'
		    }
		})
	}
	sendRPC(endpoint, method, ...params) {
		// endpoint \in {system, accessControl, encryption, recording, browser, appControl}
		// "getMethodTypes", "" is a good one to try
		return this.request({
			path: `/sony/${endpoint}`,
			json: true,
			body: {	method, params, id: 1, version: "1.0" }
		})
	}
	lookupCommand(cmd, do_lookup = true) {
		if (this.cmd_cache[cmd]) return Promise.resolve(this.cmd_cache[cmd])
		if(do_lookup) return this.sendRPC("system", "getRemoteControllerInfo").then((body) => {
			body.result[1].forEach(({name, value}) => this.cmd_cache[name] = value)
			return this.lookupCommand(cmd, false)
		})
		else return Promise.reject("command not found")
	}
	sendCommand(cmd) {
		console.log("sending", cmd)
		return typeof cmd === 'number' ? Promise.delay(cmd) :
			Array.isArray(cmd) ? this.sequence(cmd) :
			this.lookupCommand(cmd).then(ircc => this.sendIRCC(ircc))
	}
	sequence([cmd, ...commands]) {
		if (cmd == undefined) return Promise.resolve()
		return this.sendCommand(cmd).then(() => this.sequence(commands))
	}
	delaySequence(cmds, delay=250) {
		this.sequence(utils.alternate(cmds, 250))
	}
}
module.exports = Bravia