import { _decorator, Component } from 'cc';

const { ccclass, property } = _decorator;

/**
 * NetworkManager 负责 HTTP REST 与 WebSocket（Nakama Realtime）连接封装。
 */
@ccclass('NetworkManager')
export class NetworkManager extends Component {
    @property
    public baseUrl: string = 'https://api.honghuang.example.com';

    @property
    public wsUrl: string = 'wss://nakama.honghuang.example.com/ws';

    private _token: string = '';
    private _socket: WebSocket | null = null;

    public setToken(token: string): void {
        this._token = token;
    }

    /**
     * GET 请求
     */
    public async get(path: string): Promise<any> {
        return this._request('GET', path, null);
    }

    /**
     * POST 请求
     */
    public async post(path: string, body: any): Promise<any> {
        return this._request('POST', path, body);
    }

    /**
     * DELETE 请求
     */
    public async delete(path: string): Promise<any> {
        return this._request('DELETE', path, null);
    }

    private async _request(method: string, path: string, body: any): Promise<any> {
        const headers: Record<string, string> = {
            'Content-Type': 'application/json',
            'X-Client-Version': '1.0.0',
        };
        if (this._token) {
            headers['Authorization'] = `Bearer ${this._token}`;
        }
        const resp = await fetch(`${this.baseUrl}${path}`, {
            method,
            headers,
            body: body ? JSON.stringify(body) : undefined,
        });
        return resp.json();
    }

    /**
     * 连接 Nakama Realtime Socket
     */
    public connectSocket(): void {
        if (this._socket) {
            return;
        }
        // Nakama 实际连接需要先做 token 握手，此处仅保留接口桩
        this._socket = new WebSocket(`${this.wsUrl}?token=${encodeURIComponent(this._token)}`);
        this._socket.onopen = () => { console.log('Socket opened'); };
        this._socket.onmessage = (ev) => { this._onSocketMessage(ev.data); };
        this._socket.onerror = (ev) => { console.error('Socket error', ev); };
        this._socket.onclose = () => { this._socket = null; };
    }

    public disconnectSocket(): void {
        this._socket?.close();
        this._socket = null;
    }

    public sendSocket(data: any): void {
        if (this._socket && this._socket.readyState === WebSocket.OPEN) {
            this._socket.send(JSON.stringify(data));
        }
    }

    private _onSocketMessage(data: any): void {
        // TODO: 根据 event_type 分发到 EventFeedPanel / EncounterBubble / BattleScene 等
        console.log('Socket message', data);
    }
}