将智能家居设备关联到 Google 助理

npm install -g firebase-tools

firebase --version

firebase login

git clone https://github.com/google-home/smarthome-washer.git

cd washer-start
firebase use <firebase-project-id>

firebase init

? Which Firebase CLI features do you want to set up for this directory? Press Space to select features, then
 Enter to confirm your choices.
❯◉ Realtime Database: Configure a security rules file for Realtime Database and (optionally) provision default instance
 ◯ Firestore: Configure security rules and indexes files for Firestore
 ◉ Functions: Configure a Cloud Functions directory and its files
 ◉ Hosting: Configure files for Firebase Hosting and (optionally) set up GitHub Action deploys
 ◯ Hosting: Set up GitHub Action deploys
 ◯ Storage: Configure a security rules file for Cloud Storage
 ◯ Emulators: Set up local emulators for Firebase products
 ◯ Remote Config: Configure a template file for Remote Config
 ◯ Extensions: Set up an empty Extensions manifest

? It seems like you haven't initialized Realtime Database in your project yet. Do you want to set it up?
Yes

? Please choose the location for your default Realtime Database instance:
us-central1

? File database.rules.json already exists. Do you want to overwrite it with the Realtime Database Security Rules for <project-ID>-default-rtdb from the Firebase Console?
No

? Would you like to initialize a new codebase, or overwrite an existing one?
Overwrite

? What language would you like to use to write Cloud Functions?
JavaScript

? Do you want to use ESLint to catch probable bugs and enforce style?
No

? File functions/package.json already exists. Overwrite?
No

? File functions/index.js already exists. Overwrite?
No

? File functions/.gitignore already exists. Overwrite?
No

? Do you want to install dependencies with npm now?
Yes

? What do you want to use as your public directory?
public

? Configure as a single-page app (rewrite all urls to /index.html)?
Yes

? Set up automatic builds and deploys with GitHub?
No

? File public/index.html already exists. Overwrite?
 No

{
  "database": {
    "rules": "database.rules.json"
  },
  "hosting": {
    "public": "public",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  },
    "headers": [{
      "source" : "**/*.@(js|html)",
      "headers" : [ {
        "key" : "Cache-Control",
        "value" : "max-age=0"
      } ]
    }],
  "functions": [
    {
      "source": "functions",
      "codebase": "default",
      "ignore": [
        "node_modules",
        ".git",
        "firebase-debug.log",
        "firebase-debug.*.log",
        "*.local"
      ]
    }
  ]
}

firebase deploy

...

✔ Deploy complete!

Project Console: https://console.firebase.google.com/project/<firebase-project-id>/overview
Hosting URL: https://<firebase-project-id>.web.app

app.onSync((body) => {
  return {
    requestId: body.requestId,
    payload: {
      agentUserId: USER_ID,
      devices: [{
        id: 'washer',
        type: 'action.devices.types.WASHER',
        traits: [
          'action.devices.traits.OnOff',
          'action.devices.traits.StartStop',
          'action.devices.traits.RunCycle',
        ],
        name: {
          defaultNames: ['My Washer'],
          name: 'Washer',
          nicknames: ['Washer'],
        },
        deviceInfo: {
          manufacturer: 'Acme Co',
          model: 'acme-washer',
          hwVersion: '1.0',
          swVersion: '1.0.1',
        },
        willReportState: true,
        attributes: {
          pausable: true,
        },
      }],
    },
  };
});

firebase deploy --only functions

app.onQuery(async (body) => {
  const {requestId} = body;
  const payload = {
    devices: {},
  };
  const queryPromises = [];
  const intent = body.inputs[0];
  for (const device of intent.payload.devices) {
    const deviceId = device.id;
    queryPromises.push(queryDevice(deviceId)
        .then((data) => {
        // Add response to device payload
          payload.devices[deviceId] = data;
        }
        ));
  }
  // Wait for all promises to resolve
  await Promise.all(queryPromises);
  return {
    requestId: requestId,
    payload: payload,
  };
});

const queryFirebase = async (deviceId) => {
  const snapshot = await firebaseRef.child(deviceId).once('value');
  const snapshotVal = snapshot.val();
  return {
    on: snapshotVal.OnOff.on,
    isPaused: snapshotVal.StartStop.isPaused,
    isRunning: snapshotVal.StartStop.isRunning,
  };
};

const queryDevice = async (deviceId) => {
  const data = await queryFirebase(deviceId);
  return {
    on: data.on,
    isPaused: data.isPaused,
    isRunning: data.isRunning,
    currentRunCycle: [{
      currentCycle: 'rinse',
      nextCycle: 'spin',
      lang: 'en',
    }],
    currentTotalRemainingTime: 1212,
    currentCycleRemainingTime: 301,
  };
};

app.onExecute(async (body) => {
  const {requestId} = body;
  // Execution results are grouped by status
  const result = {
    ids: [],
    status: 'SUCCESS',
    states: {
      online: true,
    },
  };

  const executePromises = [];
  const intent = body.inputs[0];
  for (const command of intent.payload.commands) {
    for (const device of command.devices) {
      for (const execution of command.execution) {
        executePromises.push(
            updateDevice(execution, device.id)
                .then((data) => {
                  result.ids.push(device.id);
                  Object.assign(result.states, data);
                })
                .catch(() => functions.logger.error('EXECUTE', device.id)));
      }
    }
  }

  await Promise.all(executePromises);
  return {
    requestId: requestId,
    payload: {
      commands: [result],
    },
  };
});

const updateDevice = async (execution, deviceId) => {
  const {params, command} = execution;
  let state; let ref;
  switch (command) {
    case 'action.devices.commands.OnOff':
      state = {on: params.on};
      ref = firebaseRef.child(deviceId).child('OnOff');
      break;
    case 'action.devices.commands.StartStop':
      state = params.start
      ? {isRunning: true, isPaused: false}
      : {isRunning: false, isPaused: false};
      ref = firebaseRef.child(deviceId).child('StartStop');
      break;
    case 'action.devices.commands.PauseUnpause':
      const data = await queryDevice(deviceId);
      state = (data.isPaused === false && data.isRunning === false)
        ? {isRunning: false, isPaused: false}
        : {isRunning: !params.pause, isPaused: params.pause};
      ref = firebaseRef.child(deviceId).child('StartStop');
      break;
  }

  return ref.update(state)
      .then(() => state);
};

firebase deploy --only functions

exports.reportstate = functions.database.ref('{deviceId}').onWrite(
    async (change, context) => {
      functions.logger.info('Firebase write event triggered Report State');
      const snapshot = change.after.val();

      const requestBody = {
        requestId: 'ff36a3cc', /* Any unique ID */
        agentUserId: USER_ID,
        payload: {
          devices: {
            states: {
              /* Report the current state of our washer */
              [context.params.deviceId]: {
                on: snapshot.OnOff.on,
                isPaused: snapshot.StartStop.isPaused,
                isRunning: snapshot.StartStop.isRunning,
              },
            },
          },
        },
      };

      const res = await homegraph.devices.reportStateAndNotification({
        requestBody,
      });
      functions.logger.info('Report state response:', res.status, res.data);
    });

exports.requestsync = functions.https.onRequest(async (request, response) => {
  response.set('Access-Control-Allow-Origin', '*');
  functions.logger.info(`Request SYNC for user ${USER_ID}`);
  try {
    const res = await homegraph.devices.requestSync({
      requestBody: {
        agentUserId: USER_ID,
      },
    });
    functions.logger.info('Request sync response:', res.status, res.data);
    response.json(res.data);
  } catch (err) {
    functions.logger.error(err);
    response.status(500).send(`Error requesting sync: ${err}`);
  }
});

firebase deploy --only functions