// src/debug/apiDebugger.js
/**
 * API 调试工具
 * 生产环境临时调试使用，后期可整体删除 src/debug/ 目录
 */

import axios from 'axios';
import { getApiBase } from '@utils/apiConfig';

class ApiDebugger {
    constructor() {
        this.requestLog = [];
        this.maxLogSize = 100;
        this.isLogging = true;
    }

    /**
     * 初始化 Axios 拦截器
     */
    init() {
        // 请求拦截器
        axios.interceptors.request.use(
            (config) => {
                if (this.isLogging) {
                    const logEntry = {
                        type: 'request',
                        timestamp: new Date().toISOString(),
                        method: config.method.toUpperCase(),
                        url: config.url,
                        baseURL: config.baseURL,
                        fullURL: this._getFullURL(config),
                        headers: config.headers,
                        data: config.data,
                        params: config.params,
                    };

                    this._addLog(logEntry);

                    console.log(
                        `%c[API Request] ${logEntry.method} ${logEntry.fullURL}`,
                        'color: #2196F3; font-weight: bold;',
                        {
                            headers: config.headers,
                            data: config.data,
                            params: config.params,
                        }
                    );
                }
                return config;
            },
            (error) => {
                console.error('[API Request Error]', error);
                return Promise.reject(error);
            }
        );

        // 响应拦截器
        axios.interceptors.response.use(
            (response) => {
                if (this.isLogging) {
                    const logEntry = {
                        type: 'response',
                        timestamp: new Date().toISOString(),
                        method: response.config.method.toUpperCase(),
                        url: response.config.url,
                        fullURL: this._getFullURL(response.config),
                        status: response.status,
                        statusText: response.statusText,
                        headers: response.headers,
                        data: response.data,
                    };

                    this._addLog(logEntry);

                    console.log(
                        `%c[API Response] ${logEntry.method} ${logEntry.fullURL} - ${logEntry.status}`,
                        'color: #4CAF50; font-weight: bold;',
                        {
                            status: response.status,
                            data: response.data,
                            headers: response.headers,
                        }
                    );
                }
                return response;
            },
            (error) => {
                if (this.isLogging) {
                    const logEntry = {
                        type: 'error',
                        timestamp: new Date().toISOString(),
                        method: error.config?.method?.toUpperCase() || 'UNKNOWN',
                        url: error.config?.url || 'UNKNOWN',
                        fullURL: error.config ? this._getFullURL(error.config) : 'UNKNOWN',
                        status: error.response?.status,
                        statusText: error.response?.statusText,
                        message: error.message,
                        data: error.response?.data,
                    };

                    this._addLog(logEntry);

                    console.error(
                        `%c[API Error] ${logEntry.method} ${logEntry.fullURL}`,
                        'color: #F44336; font-weight: bold;',
                        {
                            status: error.response?.status,
                            message: error.message,
                            data: error.response?.data,
                        }
                    );
                }
                return Promise.reject(error);
            }
        );

        console.log('%c[API Debugger] Initialized', 'color: #FF9800; font-weight: bold;');
    }

    /**
     * 获取完整 URL
     */
    _getFullURL(config) {
        const baseURL = config.baseURL || '';
        const url = config.url || '';
        const fullURL = baseURL + url;

        // 添加查询参数
        if (config.params) {
            const params = new URLSearchParams(config.params).toString();
            return params ? `${fullURL}?${params}` : fullURL;
        }

        return fullURL;
    }

    /**
     * 添加日志
     */
    _addLog(entry) {
        this.requestLog.unshift(entry);
        if (this.requestLog.length > this.maxLogSize) {
            this.requestLog = this.requestLog.slice(0, this.maxLogSize);
        }
    }

    /**
     * 获取所有日志
     */
    getLogs(type = 'all') {
        if (type === 'all') {
            return this.requestLog;
        }
        return this.requestLog.filter((log) => log.type === type);
    }

    /**
     * 清空日志
     */
    clearLogs() {
        this.requestLog = [];
        console.log('[API Debugger] Logs cleared');
    }

    /**
     * 导出日志为 JSON
     */
    exportLogs() {
        const blob = new Blob([JSON.stringify(this.requestLog, null, 2)], {
            type: 'application/json',
        });
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = url;
        a.download = `api-logs-${Date.now()}.json`;
        a.click();
        URL.revokeObjectURL(url);
        console.log('[API Debugger] Logs exported');
    }

    /**
     * 打印日志统计
     */
    printStats() {
        const stats = {
            total: this.requestLog.length,
            requests: this.requestLog.filter((log) => log.type === 'request').length,
            responses: this.requestLog.filter((log) => log.type === 'response').length,
            errors: this.requestLog.filter((log) => log.type === 'error').length,
        };

        console.table(stats);
        return stats;
    }

    /**
     * 手动发送 API 请求（测试用）
     */
    async testRequest(method, endpoint, data = null, config = {}) {
        const apiBase = getApiBase();
        const url = `${apiBase}${endpoint}`;

        console.log(`[API Debugger] Testing ${method.toUpperCase()} ${url}`);

        try {
            const response = await axios({
                method,
                url,
                data,
                ...config,
            });

            console.log('[API Debugger] Test succeeded:', response.data);
            return response.data;
        } catch (error) {
            console.error('[API Debugger] Test failed:', error);
            throw error;
        }
    }

    /**
     * 开启/关闭日志记录
     */
    toggleLogging(enabled) {
        this.isLogging = enabled;
        console.log(`[API Debugger] Logging ${enabled ? 'enabled' : 'disabled'}`);
    }

    /**
     * 获取最近的错误
     */
    getRecentErrors(count = 10) {
        return this.requestLog.filter((log) => log.type === 'error').slice(0, count);
    }

    /**
     * 按 URL 过滤日志
     */
    getLogsByURL(urlPattern) {
        return this.requestLog.filter((log) => log.url && log.url.includes(urlPattern));
    }

    /**
     * 按状态码过滤日志
     */
    getLogsByStatus(status) {
        return this.requestLog.filter((log) => log.status === status);
    }
}

// 导出单例
export const apiDebugger = new ApiDebugger();
export default apiDebugger;