/* istanbul ignore file */
/* eslint-disable */
const MIN_BUFFER_SIZE = 3;
const littleEndian = true;
import PARAM from './constants';
import { busyQueue, apsBusyQueue } from './driver';
import { Request, ReceivedDataResponse, DataStateResponse, Command, ParamMac, ParamPanId, ParamNwkAddr, ParamExtPanId, ParamChannel, ParamChannelMask, ParamPermitJoin, ParamNetworkKey, gpDataInd } from './constants';
import * as Events from '../../events';
import {ZclFrame} from '../../../zcl';
import Debug from 'debug';
const debug = Debug('zigbee-herdsman:deconz:frameParser');

interface lastReceivedGpInd {
    srcId: number;
    commandId: number;
    frameCounter: number;
}

var lastReceivedGpInd = {srcId: 0, commandId: 0, frameCounter: 0};
var events = require('events');
var frameParserEvents = new events.EventEmitter();
module.exports.frameParserEvents = frameParserEvents;

function parseReadParameterResponse(view: DataView) : Command {
    const parameterId = view.getUint8(7);

    switch (parameterId) {
        case PARAM.PARAM.Network.MAC:
            const mac: ParamMac = view.getBigUint64(8, littleEndian).toString(16);
            let result = mac;
            while (result.length < 16) {
                result = "0" + result;
            }
            result = "0x" + result;
            debug(`MAC: ${result}`);
            return result;
        case PARAM.PARAM.Network.PAN_ID:
            const panId: ParamPanId = view.getUint16(8, littleEndian);
            debug('PANID: ' + panId.toString(16));
            return panId;
        case PARAM.PARAM.Network.NWK_ADDRESS:
            const nwkAddr: ParamNwkAddr = view.getUint16(8, littleEndian);
            debug('NWKADDR: ' + nwkAddr.toString(16));
            return nwkAddr;
        case PARAM.PARAM.Network.EXT_PAN_ID:
            const extPanId: ParamExtPanId = view.getBigUint64(8, littleEndian).toString(16);
            let res = extPanId;
            while (res.length < 16) {
                res = "0" + res;
            }
            res = "0x" + res;
            debug(`EXT_PANID: ${res}`);
            return res;
        case PARAM.PARAM.Network.APS_EXT_PAN_ID:
            const apsExtPanId: ParamExtPanId = view.getBigUint64(8, littleEndian).toString(16);
            let resAEPID = apsExtPanId;
            while (resAEPID.length < 16) {
                resAEPID = "0" + resAEPID;
            }
            resAEPID = "0x" + resAEPID;
            debug(`APS_EXT_PANID: ${resAEPID}`);
            return resAEPID;
        case PARAM.PARAM.Network.NETWORK_KEY:
            const networkKey1 = view.getBigUint64(9).toString(16);
            let res1 = networkKey1;
            while (res1.length < 16) {
                res1 = "0" + res1;
            }
            const networkKey2 = view.getBigUint64(17).toString(16);
            let res2 = networkKey2;
            while (res2.length < 16) {
                res2 = "0" + res2;
            }
            debug('NETWORK_KEY: hidden');
            return "0x"+res1+res2;
        case PARAM.PARAM.Network.CHANNEL:
            const channel: ParamChannel = view.getUint8(8);
            debug('CHANNEL: ' + channel);
            return channel;
        case PARAM.PARAM.Network.CHANNEL_MASK:
            const chMask: ParamChannelMask = view.getUint32(8, littleEndian);
            debug('CHANNELMASK: ' + chMask.toString(16));
            return chMask;
        case PARAM.PARAM.Network.PERMIT_JOIN:
            const permitJoin: ParamPermitJoin = view.getUint8(8);
            debug('PERMIT_JOIN: ' + permitJoin);
            return permitJoin;
        case PARAM.PARAM.Network.WATCHDOG_TTL:
            const ttl: ParamPermitJoin = view.getUint32(8);
            debug('WATCHDOG_TTL: ' + ttl);
            return ttl;
        default:
            //throw new Error(`unknown parameter id ${parameterId}`);
            debug(`unknown parameter id ${parameterId}`);
            return null;
    }
}

function parseReadFirmwareResponse(view : DataView) : number[] {
    const fw = [view.getUint8(5), view.getUint8(6), view.getUint8(7), view.getUint8(8)];
    debug("read firmware version response - version: " + fw);
    return fw;
}

function parseDeviceStateResponse(view : DataView) : number {
    const flag = view.getUint8(5);
    debug("device state: " + flag.toString(2));
    frameParserEvents.emit('receivedDataNotification', flag);
    return flag;
}

function parseChangeNetworkStateResponse(view : DataView) : number {
    const status = view.getUint8(2);
    const state = view.getUint8(5);
    debug("change network state - status: " + status + " new state: " + state);
    return state;
}

function parseQuerySendDataStateResponse(view : DataView) : object {

    const response: DataStateResponse = {};
    let buf2, buf3;

    response.commandId = view.getUint8(0);
    response.seqNr = view.getUint8(1);
    response.status = view.getUint8(2);

    if (response.status != 0) {
        debug("DATA_CONFIRM RESPONSE - seqNr.: " + response.seqNr + " status: " + response.status);
        return null;
    }

    response.frameLength = 7;
    response.payloadLength = view.getUint16(5, littleEndian);
    response.deviceState = view.getUint8(7);
    response.requestId = view.getUint8(8);

    response.destAddrMode = view.getUint8(9);

    let destAddr = "";
    if (response.destAddrMode === 0x03) {
        let res = view.getBigUint64(10, littleEndian).toString(16);
        while (res.length < 16) {
            res = "0" + res;
        }
        response.destAddr64 = res;
        buf2 = view.buffer.slice(18, view.buffer.byteLength);
        destAddr = response.destAddr64;
    } else {
        response.destAddr16 = view.getUint16(10, littleEndian);
        buf2 = view.buffer.slice(12, view.buffer.byteLength);
        destAddr = response.destAddr16.toString(16);
    }
    if (response.destAddrMode === 0x02 || response.destAddrMode === 0x03) {
        response.destEndpoint = view.getUint8(view.byteLength - 7);
    }

    response.srcEndpoint = view.getUint8(view.byteLength - 6);
    response.confirmStatus = view.getInt8(view.byteLength - 5);

    let newStatus = response.deviceState.toString(2);
    for (let l = 0; l <= (8 - newStatus.length); l++) {
        newStatus = "0" + newStatus;
    }

    // resolve send data request promise
    const i = apsBusyQueue.findIndex((r: Request) => (r.request && r.request.requestId === response.requestId));
    if (i < 0) {
        return;
    }

    let string = "";
    for (let u = 0; u < apsBusyQueue.length; u++) {
        const re: Request = apsBusyQueue[u];
        string += re.seqNumber;
        string += ",";
    }

    const req: Request = apsBusyQueue[i];

    // TODO timeout (at driver.ts)
    if (response.confirmStatus !== 0) {
        // reject if status is not SUCCESS
        //debug("REJECT APS_REQUEST - request id: " + response.requestId + " confirm status: " + response.confirmStatus);
        req.reject(response.confirmStatus);
    } else {
        //debug("RESOLVE APS_REQUEST - request id: " + response.requestId + " confirm status: " + response.confirmStatus);
        req.resolve(response.confirmStatus);
    }

    //remove from busyqueue
    apsBusyQueue.splice(i, 1);

    debug("DATA_CONFIRM RESPONSE - destAddr: 0x" + destAddr + " request id: " + response.requestId + " confirm status: " + response.confirmStatus);
    frameParserEvents.emit('receivedDataNotification', response.deviceState);
/*
    const zclPayload: ZclDataPayload = {
        frame: ZclFrame;
        endpoint: number;
        linkquality: number;
        groupID: number;
    }
*/
    return response;
}

function parseReadReceivedDataResponse(view : DataView) : object {
    // min 28 bytelength
    const response: ReceivedDataResponse = {};
    let buf2, buf3;

    response.commandId = view.getUint8(0);
    response.seqNr = view.getUint8(1);
    response.status = view.getUint8(2);

    if (response.status != 0) {
        debug("DATA_INDICATION RESPONSE - seqNr.: " + response.seqNr + " status: " + response.status);
        return null;
    }

    response.frameLength = view.getUint16(3, littleEndian);
    response.payloadLength = view.getUint16(5, littleEndian);
    response.deviceState = view.getUint8(7);
    response.destAddrMode = view.getUint8(8);

    let destAddr = "";
    if (response.destAddrMode === 0x03) {
        let res = view.getBigUint64(9, littleEndian).toString(16);
        while (res.length < 16) {
            res = "0" + res;
        }
        response.destAddr64 = res;
        buf2 = view.buffer.slice(17, view.buffer.byteLength);
        destAddr = response.destAddr64;
    } else {
        response.destAddr16 = view.getUint16(9, littleEndian);
        buf2 = view.buffer.slice(11, view.buffer.byteLength);
        destAddr = response.destAddr16.toString(16);
    }

    view = new DataView(buf2);
    response.destEndpoint = view.getUint8(0);
    response.srcAddrMode = view.getUint8(1);

    let srcAddr = "";
    if (response.srcAddrMode === 0x02 || response.srcAddrMode === 0x04) {
        response.srcAddr16 = view.getUint16(2, littleEndian)
        buf3 = view.buffer.slice(4, view.buffer.byteLength);
        srcAddr = response.srcAddr16.toString(16);
    }

    if (response.srcAddrMode === 0x03 || response.srcAddrMode === 0x04) {
        let res = view.getBigUint64(2, littleEndian).toString(16);
        while (res.length < 16) {
            res = "0" + res;
        }
        response.srcAddr64 = res;
        buf3 = view.buffer.slice(10, view.buffer.byteLength);
        srcAddr = response.srcAddr64;
    }

    view = new DataView(buf3);
    response.srcEndpoint = view.getUint8(0);
    response.profileId = view.getUint16(1, littleEndian);
    response.clusterId = view.getUint16(3, littleEndian);
    response.asduLength = view.getUint16(5, littleEndian);

    let payload = [];
    let i = 0;
    for (let u = 7; u < (response.asduLength + 7); u++) {
        payload[i] = view.getUint8(u);
        i++;
    }

    response.asduPayload = payload;
    response.lqi = view.getUint8(view.byteLength - 6);
    response.rssi = view.getInt8(view.byteLength - 1);

    let newStatus = response.deviceState.toString(2);
    for (let l = 0; l <= (8 - newStatus.length); l++) {
        newStatus = "0" + newStatus;
    }

    debug("DATA_INDICATION RESPONSE - seqNr. " + response.seqNr + " srcAddr: 0x" + srcAddr + " destAddr: 0x" + destAddr + " profile id: 0x" + response.profileId.toString(16) + " cluster id: 0x" + response.clusterId.toString(16));
    debug("response payload: " + payload);
    frameParserEvents.emit('receivedDataPayload', response);
    frameParserEvents.emit('receivedDataNotification', response.deviceState);
    return response;
}

function parseEnqueueSendDataResponse(view : DataView) : number {
    const status = view.getUint8(2);
    const requestId = view.getUint8(8);
    const deviceState = view.getUint8(7);
    debug("DATA_REQUEST RESPONSE - request id: " + requestId + " status: " + status);
    frameParserEvents.emit('receivedDataNotification', deviceState);
    return deviceState;
}

function parseWriteParameterResponse(view : DataView) : number {
    const parameterId = view.getUint8(7);
    debug(`write parameter response - parameter id: ${parameterId} - status: ${view.getUint8(2)}`);
    return parameterId;
}

function parseReceivedDataNotification(view : DataView) : number {
    const deviceState = view.getUint8(5);
    debug("DEVICE_STATE changed: " + deviceState.toString(2));
    frameParserEvents.emit('receivedDataNotification', deviceState);
    return deviceState;
}

function parseGreenPowerDataIndication(view : DataView) : object {
    const ind: gpDataInd = {};
    ind.seqNr = view.getUint8(1);

    console.log(view);
    if (view.byteLength < 30) {
        debug("GP data notification");
        ind.id = 0x00; // 0 = notification, 4 = commissioning
        ind.rspId = 0x01; // 1 = pairing, 2 = commissioning
        ind.options = 0; view.getUint16(7, littleEndian); // frame ctrl field(7) ext.fcf(8)
        ind.srcId = view.getUint32(9, littleEndian);
        ind.frameCounter = view.getUint32(13, littleEndian);
        ind.commandId = view.getUint8(17);
        ind.commandFrameSize = view.byteLength - 18 - 6; // cut 18 from begin and 4 (sec mic) and 2 from end (cfc)

        let payload = [];
        let i = 0;
        for (let u = 18; u < (ind.commandFrameSize + 18); u++) {
            payload[i] = view.getUint8(u);
            i++;
        }
        ind.commandFrame = payload;
    } else {
        debug("GP commissioning notification");
        ind.id = 0x04; // 0 = notification, 4 = commissioning
        ind.rspId = 0x01; // 1 = pairing, 2 = commissioning
        ind.options = view.getUint16(14, littleEndian); // opt(14) ext.opt(15)
        ind.srcId = view.getUint32(8, littleEndian);
        ind.frameCounter = view.getUint32(36, littleEndian);
        ind.commandId = view.getUint8(12);
        ind.commandFrameSize = view.byteLength - 13 - 2; // cut 13 from begin and 2 from end (cfc)

        let payload = [];
        let i = 0;
        for (let u = 13; u < (ind.commandFrameSize + 13); u++) {
            payload[i] = view.getUint8(u);
            i++;
        }
        ind.commandFrame = payload;
    }

    if (!(lastReceivedGpInd.srcId === ind.srcId &&
          lastReceivedGpInd.commandId === ind.commandId &&
          lastReceivedGpInd.frameCounter === ind.frameCounter)) {

        lastReceivedGpInd.srcId = ind.srcId;
        lastReceivedGpInd.commandId = ind.commandId;
        lastReceivedGpInd.frameCounter = ind.frameCounter;
        //debug(`GP_DATA_INDICATION - src id: ${ind.srcId} cmd id: ${ind.commandId} frameCounter: ${ind.frameCounter}`);
        debug(`GP_DATA_INDICATION - src id: 0x${ind.srcId.toString(16)} cmd id: 0x${ind.commandId.toString(16)} frameCounter: 0x${ind.frameCounter.toString(16)}`);
        frameParserEvents.emit('receivedGreenPowerIndication', ind);
    }
    return ind;
}

function parseMacPollCommand(view : DataView) : number {
    //debug("Received command MAC_POLL");
    return 28;
}

function parseBeaconRequest(view : DataView) : number {
    debug("Received Beacon Request");
    return 31;
}

function parseUnknownCommand(view : DataView) : number {
    const id = view.getUint8(0);
    debug(`received unknown command - id ${id}`);
    return id;
}
function getParserForCommandId(id: Number) : Function {
    switch (id) {
        case PARAM.PARAM.FrameType.ReadParameter:
            return parseReadParameterResponse;
        case PARAM.PARAM.FrameType.WriteParameter:
            return parseWriteParameterResponse;
        case PARAM.PARAM.FrameType.ReadFirmwareVersion:
            return parseReadFirmwareResponse;
        case PARAM.PARAM.FrameType.ReadDeviceState:
            return parseDeviceStateResponse;
        case PARAM.PARAM.APS.DATA_INDICATION:
            return parseReadReceivedDataResponse;
        case PARAM.PARAM.APS.DATA_REQUEST:
            return parseEnqueueSendDataResponse;
        case PARAM.PARAM.APS.DATA_CONFIRM:
            return parseQuerySendDataStateResponse;
        case PARAM.PARAM.FrameType.DeviceStateChanged:
            return parseReceivedDataNotification;
        case PARAM.PARAM.NetworkState.CHANGE_NETWORK_STATE:
            return parseChangeNetworkStateResponse;
        case PARAM.PARAM.FrameType.GreenPowerDataInd:
            return parseGreenPowerDataIndication;
        case 28:
            return parseMacPollCommand;
        case 31:
            return parseBeaconRequest;
        default:
            return parseUnknownCommand;
            //throw new Error(`unknown command id ${id}`);
    }
}

async function processFrame(frame: Uint8Array) : Promise<void> {
    const [seqNumber, status, command, commandId] = await parseFrame(frame);
    //debug(`process frame with seq: ${seqNumber} status: ${status}`);

    let queue = busyQueue;

    if (commandId === PARAM.PARAM.APS.DATA_INDICATION ||
        commandId === PARAM.PARAM.APS.DATA_REQUEST ||
        commandId === PARAM.PARAM.APS.DATA_CONFIRM ) {
        queue = apsBusyQueue;
    }

    const i = queue.findIndex((r: Request) => r.seqNumber === seqNumber);
    if (i < 0) {
        return;
    }

    const req: Request = queue[i];

    if (commandId === PARAM.PARAM.APS.DATA_REQUEST) {
        // if confirm is true resolve request only when data confirm arrives
        // TODO only return if a confirm was requested. if no confirm needed: go ahead
        //if (req.confirm === true) {
            return;
        //}
    }

    if (status !== 0) {
        // reject if status is not SUCCESS
        //debug("REJECT REQUEST");
        req.reject({status});
    } else {
        //debug("RESOLVE REQUEST");
        req.resolve(command);
    }
    //remove from busyqueue
    queue.splice(i, 1);
}

function parseFrame(frame: Uint8Array) : [number, number, Command, number] {

    if (frame.length < MIN_BUFFER_SIZE) {
        throw new Error("received frame size to small");
    }

    const view = new DataView(frame.buffer);
    const commandId = view.getUint8(0);
    const seqNumber = view.getUint8(1);
    const status = view.getUint8(2);
    const frameLength = view.getUint16(3, littleEndian);
    const payloadLength = view.getUint16(5, littleEndian);
    // todo check framelength, payloadlength < x
    const parser = getParserForCommandId(commandId);

    return [seqNumber, status, parser(view), commandId];

}

export default processFrame;