88 lines
2.0 KiB
TypeScript
88 lines
2.0 KiB
TypeScript
import { Transform } from "stream";
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const registerLevels = {
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none: 0,
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portal: 1,
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segaid: 2,
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};
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export class Encoder extends Transform {
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constructor() {
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super({
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readableObjectMode: true,
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writableObjectMode: true,
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});
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}
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static init(length) {
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const buf = Buffer.alloc(length);
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buf.writeUInt16LE(0xa13e, 0x0000); // Magic?
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buf.writeUInt16LE(0x3087, 0x0002); // ???
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buf.writeUInt16LE(length, 0x0006);
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return buf;
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}
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_transform(chunk, encoding, callback) {
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console.log("Aimedb: Encode", chunk);
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let buf;
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switch (chunk.cmd) {
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case "hello":
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buf = Encoder.init(0x0020);
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buf.writeUInt16LE(0x0065, 0x0004); // cmd code
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buf.writeUInt16LE(chunk.status, 0x0008);
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break;
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case "campaign":
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// Still figuring this out...
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buf = Encoder.init(0x0200);
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buf.writeUInt16LE(0x000c, 0x0004); // cmd code
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buf.writeUInt16LE(chunk.status, 0x0008);
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// Campaign array starts at 0x20
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// Element size is 0xA0
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break;
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case "lookup":
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// -1 aime id means card is not registered
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// register level does not seem to matter
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buf = Encoder.init(0x0130);
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buf.writeUInt16LE(0x0010, 0x0004); // cmd code
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buf.writeUInt16LE(chunk.status, 0x0008);
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buf.writeInt32LE(chunk.aimeId || -1, 0x0020);
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buf.writeUInt8(registerLevels[chunk.registerLevel], 0x0024);
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break;
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case "register":
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buf = Encoder.init(0x0030);
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buf.writeUInt16LE(0x0006, 0x0004); // cmd code
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buf.writeUInt16LE(chunk.status, 0x0008);
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buf.writeInt32LE(chunk.aimeId, 0x0020);
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break;
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case "log":
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buf = Encoder.init(0x0020);
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buf.writeUInt16LE(0x000a, 0x0004); // cmd code
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buf.writeUInt16LE(chunk.status, 0x0008);
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break;
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default:
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return callback(new Error(`Unimplemented response: ${chunk.cmd}`));
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}
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console.log("Aimedb: Send", buf);
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return callback(null, buf);
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}
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}
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