ENCODING!! and lots of organization

2026-08-19 22:24:17 +00:00 · 2023-09-13 14:50:27 -05:00
parent 2ab90d0146
commit fa0160fc54
37 changed files with 651 additions and 222 deletions
@@ -0,0 +1,56 @@
+const { Parser } = require('binary-parser');
+const Decoders = require('../../decoders');
+
+class InfoPacket {
+  constructor(packet) {
+    this.packet = packet;
+    this.subChunks = [];
+    if (this.packet.has_subchunks) {
+      this.subChunkParser = new Parser().array('chunks', {
+        type: Decoders.Chunk,
+        lengthInBytes: this.packet.data_len,
+      });
+      this.subChunks = this.subChunkParser.parse(this.packet.chunk_data)?.chunks;
+      this.subChunks = this.subChunks.map((subChunk) => {
+        let populatedSubChunk = {};
+        populatedSubChunk.data_len_valid = subChunk.chunk_data.length === subChunk.data_len;
+        switch (subChunk.id) {
+          case 0:
+            populatedSubChunk = {
+              ...subChunk,
+              ...Decoders.PacketHeaderChunk.parse(subChunk.chunk_data),
+            };
+            break;
+          case 1:
+            populatedSubChunk = {
+              ...subChunk,
+              ...Decoders.Info.SystemNameChunk.parse(subChunk.chunk_data),
+            };
+            break;
+          case 2:
+            populatedSubChunk = {
+              ...subChunk,
+              ...Decoders.Info.TrackerListChunk.parse(subChunk.chunk_data),
+            };
+            break;
+          default:
+            populatedSubChunk = {
+              ...subChunk,
+            };
+            break;
+        }
+        return populatedSubChunk;
+      });
+    }
+  }
+
+  getHeaderPacket() {
+    return this.subChunks.find((subChunk) => subChunk.id === 0x0000);
+  }
+
+  getSystemPacket() {
+    return this.subChunks.find((subChunk) => subChunk.id === 0x0001);
+  }
+}
+
+module.exports = InfoPacket;