typescript rewrite

client/src/network.ts

@@ -0,0 +1,55 @@
+interface Packet {
+    getId(): string
+    getData(): string
+}
+
+function createPacket(id: string, ...params: string[]): Packet {
+    return {
+        getId: () => id,
+        getData: () => params.join("\n"),
+    } 
+}
+
+function fromPacket(data: string): Packet {
+    return createPacket(data[0], ...data.slice(1).split("\n"))
+}
+
+class Connection {
+    private socket: WebSocket
+    private on_packet: (packet: Packet) => {}
+    private on_close: (error: string | null) => {}
+
+    constructor(
+        socket: WebSocket, 
+        on_packet: (packet: Packet) => {}, 
+        on_close: (error: string | null) => {}
+    ) {
+        this.socket = socket
+        this.on_packet = on_packet
+        this.on_close = on_close
+
+        this.socket.onmessage = this._on_message
+        this.socket.onclose = this._on_close
+        this.socket.onerror = this._on_error
+    }
+
+    private _on_message(event: MessageEvent) {
+        this.on_packet(fromPacket(event.data))
+    }
+
+    private _on_close(event: CloseEvent) {
+        this.on_close(null)
+    }
+
+    private _on_error(event: Event) {
+        this.on_close(event.toString())
+    }
+
+    close() {
+        this.socket.close()
+    }
+
+    send(packet: Packet) {
+        this.socket.send(packet.getId()+packet.getData())
+    }
+}