'use strict';

const http = require('http');
let globalIP = 'デフォルトのIPアドレス';  // 初期化

// --------------- Helpers that build all of the responses -----------------------

function buildSpeechletResponse(title, output, repromptText, shouldEndSession) {
    return {
        outputSpeech: {
            type: 'PlainText',
            text: output,
        },
        card: {
            type: 'Simple',
            title: `SessionSpeechlet - ${title}`,
            content: `SessionSpeechlet - ${output}`,
        },
        reprompt: {
            outputSpeech: {
                type: 'PlainText',
                text: repromptText,
            },
        },
        shouldEndSession,
    };
}

function buildResponse(sessionAttributes, speechletResponse) {
    return {
        version: '1.0',
        sessionAttributes,
        response: speechletResponse,
    };
}

// --------------- Functions that control the skill's behavior -----------------------

function getWelcomeResponse(callback) {
    const sessionAttributes = {};
    const cardTitle = 'Welcome';
    const speechOutput = "二階の温度を教えてなどと問いかけると、それを答えます。";
    const repromptText = "私はこの部屋を見てるわよっ！何が知りたいのっ！　　　ってかっ";
    const shouldEndSession = false;

    callback(sessionAttributes,
        buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
}

function handleSessionEndRequest(callback) {
    const cardTitle = 'Session Ended';
    const speechOutput = 'Thank you for trying the Alexa Skills Kit sample. Have a nice day!';
    const shouldEndSession = true;

    callback({}, buildSpeechletResponse(cardTitle, speechOutput, null, shouldEndSession));
}

function createLocationAttributes(location) {
    return { location };
}

async function readTemperatureInSession(intent, session, callback) {
    const cardTitle = intent.name;
    const LocationSlot = intent.slots.Location;
    const MeasurementSlot = intent.slots.Measurement;
    let repromptText = '';
    let sessionAttributes = session.attributes || {};
    const shouldEndSession = false;
    let speechOutput = '';
    let body = '';
    const blynkport = '8080';
    let blynkAuthToken;
    let blynkPin;

    // Raspberry PiからのglobalIPを使用
    let location = LocationSlot.value || sessionAttributes.location || '二階';
    sessionAttributes.location = location;

    let ip = sessionAttributes.globalIP || globalIP;

    switch (location) {
        case '二階':
            blynkAuthToken = 't1uC6ciQZrTtNt1wpbmLskRMBvSyi9Lw';
            break;
        case '仏間':
            blynkAuthToken = 'slWRpvQMI-NTHGPb28JBMKIRS7vi4ch2';
            break;
        case '屋根裏':
            blynkAuthToken = 'uwPwuHpaIxEo7t9FRfaCCQ6R4268eEeI';
            break;
        default:
            speechOutput = '指定された場所が見つかりませんでした。';
            repromptText = '他の場所を指定してください。';
            callback(sessionAttributes, buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
            return;
    }

    let measurement = MeasurementSlot.value || '温度';
    switch (measurement) {
        case '何度':
        case '気温':
        case '室温':
        case '温度':
            blynkPin = 'V0';
            break;
        case '湿気':
        case '湿度':
            blynkPin = 'V1';
            break;
        case '大気圧':
        case '気圧':
            blynkPin = 'V2';
            break;
        case '熱中度指数':
        case '熱中度':
        case '暑さ指数':
        case '暑さ度':
        case '暑さ':
            blynkPin = 'V4';
            break;
        default:
            speechOutput = '指定された測定項目が見つかりませんでした。';
            repromptText = '他の測定項目を指定してください。';
            callback(sessionAttributes, buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
            return;
    }

    try {
        console.log(`Sending request to Blynk server with Auth Token: ${blynkAuthToken}, Pin: ${blynkPin}, IP: ${ip}`);

        const httpPromise = new Promise((resolve, reject) => {
            http.get({
                host: ip,
                path: `/${blynkAuthToken}/get/${blynkPin}`,
                port: blynkport,
            }, (response) => {
                response.on('data', (d) => {
                    body += d;
                });
                response.on('end', () => {
                    resolve('Done Sending');
                });
            }).on('error', (e) => {
                reject(e);
            });
        });

        await httpPromise;

        console.log(`Received response from Blynk server: ${body}`);

        const info = parseFloat(JSON.parse(body));
        if (isNaN(info)) {
            speechOutput = '温度の取得に失敗しました。';
            repromptText = 'もう一度お試しください。';
            callback(sessionAttributes, buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
        } else {
            speechOutput = location + 'の ' + measurement + 'は ';
            repromptText = speechOutput;
            switch (measurement) {
                default:
                case '何度':
                case '気温':
                case '室温':
                case '温度':
                    speechOutput += `${info.toFixed(1)}度 です。`;
                    repromptText += `${info.toFixed(1)}℃です。`;
                    break;
                case '湿気':
                case '湿度':
                    speechOutput += `${info.toFixed(1)}パーセント です。`;
                    repromptText += `${info.toFixed(1)}%です。`;
                    break;
                case '大気圧':
                case '気圧':
                    speechOutput += `${info.toFixed(0)}ヘクトパスカル です。`;
                    repromptText += `${info.toFixed(0)}hPaです。`;
                    break;
                case '熱中度指数':
                case '熱中度':
                case '暑さ指数':
                case '暑さ度':
                case '暑さ':
                    let annotation = '';
                    if (info >= 31) {
                        annotation = '危険！　ブラックです。';
                    } else if (info >= 28) {
                        annotation = '厳重警戒！　レッドです。';
                    } else if (info >= 25) {
                        annotation = '警戒！　オレンジです。';
                    } else if (info >= 21) {
                        annotation = '注意です。';
                    }
                    speechOutput += `${info.toFixed(0)}度 です。${annotation}`;
                    repromptText += `${info.toFixed(0)}℃です。${annotation}`;
                    break;
            }
            callback(sessionAttributes, buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
        }
    } catch (error) {
        console.error(`Error: ${error}`);
        speechOutput = '温度の取得中にエラーが発生しました。';
        repromptText = 'もう一度お試しください。';
        callback(sessionAttributes, buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
    }
}

// --------------- Events -----------------------

function onSessionStarted(sessionStartedRequest, session) {
    console.log(`onSessionStarted requestId=${sessionStartedRequest.requestId}, sessionId=${session.sessionId}`);
}

function onLaunch(launchRequest, session, callback) {
    console.log(`onLaunch requestId=${launchRequest.requestId}, sessionId=${session.sessionId}`);
    getWelcomeResponse((sessionAttributes, speechletResponse) => {
        callback(sessionAttributes, speechletResponse);
    });
}

function onIntent(intentRequest, session, callback) {
    console.log(`onIntent requestId=${intentRequest.requestId}, sessionId=${session.sessionId}`);
    const intent = intentRequest.intent;
    const intentName = intentRequest.intent.name;

    if (intentName === 'GetMeasurement') {
        readTemperatureInSession(intent, session, callback);
    } else if (intentName === 'AMAZON.HelpIntent') {
        getWelcomeResponse((sessionAttributes, speechletResponse) => {
            callback(sessionAttributes, speechletResponse);
        });
    } else if (intentName === 'AMAZON.StopIntent' || intentName === 'AMAZON.CancelIntent') {
        handleSessionEndRequest((sessionAttributes, speechletResponse) => {
            callback(sessionAttributes, speechletResponse);
        });
    } else {
        throw new Error('Invalid intent');
    }
}

function onSessionEnded(sessionEndedRequest, session) {
    console.log(`onSessionEnded requestId=${sessionEndedRequest.requestId}, sessionId=${session.sessionId}`);
}

exports.handler = (event, context) => {
    try {
        console.log('Event:', JSON.stringify(event));  // イベント全体をログに記録

        // Initialize session attributes if not present
        if (!event.session.attributes) {
            event.session.attributes = {};
        }

        // グローバルIPアドレスをイベントから取得して設定
        if (event.ip) {
            globalIP = event.ip;
            event.session.attributes.globalIP = globalIP;  // IPをセッション属性に保存
            console.log(`Updated globalIP to: ${globalIP}`);
        } else if (event.session.attributes.globalIP) {
            globalIP = event.session.attributes.globalIP;  // セッション属性からIPを取得
            console.log(`Using globalIP from session attributes: ${globalIP}`);
        } else {
            console.error('IPアドレスが提供されていません。');
        }

        if (event.session && event.session.new) {
            onSessionStarted({ requestId: event.request.requestId }, event.session);
        }
        if (event.request && event.request.type) {
            if (event.request.type === 'LaunchRequest') {
                onLaunch(event.request, event.session, (sessionAttributes, speechletResponse) => {
                    context.succeed(buildResponse(sessionAttributes, speechletResponse));
                    console.log('LaunchRequest succeeded');
                });
            } else if (event.request.type === 'IntentRequest') {
                onIntent(event.request, event.session, (sessionAttributes, speechletResponse) => {
                    context.succeed(buildResponse(sessionAttributes, speechletResponse));
                    console.log('IntentRequest succeeded');
                });
            } else if (event.request.type === 'SessionEndedRequest') {
                onSessionEnded(event.request, event.session);
                context.succeed();
                console.log('SessionEndedRequest succeeded');
            }
        } else {
            console.error('event.request が見つかりません。');
            context.fail('event.request が見つかりません。');
        }
    } catch (e) {
        console.error(`Exception: ${e}`);
        context.fail(`Exception: ${e}`);
    }
};