import { Request, Response, NextFunction } from "express";
import { setLEDservice, getLEDservice, getAllLEDsservice } from "../services/gpio.service";

// const ledmapping = {"0" : "4", "1" : "2", "3": "22"}


export function setLED(req: Request, res: Response, next: NextFunction) {

    //Get wanted LED and wished value
    const id: string = req.params.id;
    const newValue = req.body["value"];

    if (id == null) {
        res.status(401).json({ "msg": "wrong id" });
        return;
    }

    if (id != "4" && id != "2" && id != "22") {
        res.status(401).json({ "msg": "LED does not exist" });
        return;
    }
    if (newValue == null || !(newValue === 0 || newValue === 1)) {
        res.status(401).json({ "msg": "invalid input" });
        return;
    }

    setLEDservice(id, newValue);
    const value = getLEDservice(id);
    res.status(201).json({id,value});
}

export function getLED(req: Request, res: Response, next: NextFunction) {

    const id: Number = parseInt(req.params.id);

    const value = getLEDservice(id);
    if (value) {
        res.status(200).json({ "led": "on" })
    }
    else {
        res.status(200).json({ "led": "off" });
    }
}

export function getAllLEDs(req: Request, res: Response, next: NextFunction) {
    res.status(200).json({ "leds": getAllLEDsservice() })
}