/** * External App URL (must) */ const externalAppUrl = "https://near-test-app.web.app/"; /** * Initial Path (optional but recommended) */ const path = props.path; /** * Initial view height (optional but recommended) */ const initialViewHeight = 500; /** * Initial Payload (optional) - Do not use async data here, it may fail to be ready before sending this initial payload. * If you want to get some data, make a "request" * * Use "useInitialPayload()" hook inside the external app to get this data */ const initialPayload = {}; /** * Request Handlers - Backend. * * - request: payload sent by External App * * - response: method to send the answer back to the External App * * - utils: Utils features like * - promisify: (caller, resolve, reject) * There's no Promisse for some features yet, So this is util for when you need to get cached data using DiscoveryAPI, e.g: * utils.promisify(() => Social.getr(`${context.accountId}/profile`), (res) => console.log(res), (err) => console.log(err)) * * @param {{type: string, payload: {}}} request request with payload sent by External App * @param {(request) => {send: () => void}} response send the answer back to the External App * @param {{promisify:(caller: () => void, resolve: (data) => void, reject: (error) => void)}} utils Utils features like */ const requestHandler = (request, response, Utils) => { switch (request.type) { case "get-room-data": getRoomDataHandler(request, response, Utils); break; case "send-message": sendMessageHandler(request, response); break; case "register-new-room": registerNewRoomHandler(request, response, Utils); break; case "get-rooms-list": getRoomsListHandler(request, response, Utils); break; } }; const getRoomDataHandler = (request, response, Utils) => { const { payload } = request; Utils.promisify( () => Social.index(payload.roomId, "data", { subscribe: true, limit: 100, order: "desc", }), (roomData) => { const roomExists = roomData && roomData.length > 0; if (!roomExists) { response(request).send({ error: "room not found" }); return; } response(request).send({ messages: roomData }); }, (err) => { response(request).send({ error: "internal error" }); } ); }; const sendMessageHandler = (request, response) => { const { payload } = request; if (payload.roomId && payload.message) { // Store message Social.set( { index: { [payload.roomId]: JSON.stringify( { key: "data", value: payload.message, }, undefined, 0 ), }, }, { force: true, onCommit: () => { response(request).send(); }, onCancel: () => { response(request).send({ error: "the action was canceled" }); }, } ); return; } // Error response(request).send({ error: "you must provide the roomId and a message prop", }); }; const registerNewRoomHandler = (request, response, Utils) => { const { roomId } = request.payload; if (!roomId) { response(request).send({ error: "you must provide the roomId prop" }); return; } Utils.promisify( () => Storage.get("app:rooms-list"), (rooms) => { if (rooms.includes(roomId)) { response(request).send({ roomsList: rooms }); return; } // Update the rooms list const updatedRoomsList = [...rooms, roomId]; Storage.set("app:rooms-list", updatedRoomsList); response(request).send({ roomsList: updatedRoomsList }); } ); }; const getRoomsListHandler = (request, response, Utils) => { Utils.promisify( () => Storage.get("app:rooms-list"), (rooms) => { // Send the rooms list response(request).send({ roomsList: rooms || [] }); } ); }; return ( <Widget src={"wendersonpires.near/widget/NearSocialBridgeCore"} props={{ externalAppUrl, path, initialViewHeight, initialPayload, requestHandler, }} /> );