// 防止屏蔽，所以用base64编码并直接扔文件里
const sensitiveWordsConfig = {
    mask: "*",
    mask_word: "",
    words: [
        "5Lmg6L+R5bmz",
        "6IOh6ZSm5rab",
        "5rGf5rO95rCR",
        "5rip5a625a6d",
        "5p2O5YWL5by6",
        "5p2O6ZW/5pil",
        "5q+b5rO95Lic",
        "6YKT5bCP5bmz",
        "5ZGo5oGp5p2l",
        "6ams5YWL5oCd",
        "56S+5Lya5Li75LmJ",
        "5YWx5Lqn5YWa",
        "5YWx5Lqn5Li75LmJ",
        "5aSn6ZmG5a6Y5pa5",
        "5YyX5Lqs5pS/5p2D",
        "5Lit5Y2O5bid5Zu9",
        "5Lit5Zu95pS/5bqc",
        "5YWx54uX",
        "5YWt5Zub5LqL5Lu2",
        "5aSp5a6J6Zeo",
        "5YWt5Zub",
        "5pS/5rK75bGA5bi45aeU",
        "5Lik5Lya",
        "5YWx6Z2S5Zui",
        "5a2m5r2u",
        "5YWr5Lmd",
        "5LqM5Y2B5aSn",
        "5rCR6L+b5YWa",
        "5Y+w54us",
        "5Y+w5rm+54us56uL",
        "5Y+w5rm+5Zu9",
        "5Zu95rCR5YWa",
        "5Y+w5rm+5rCR5Zu9",
        "5Lit5Y2O5rCR5Zu9",
        "cG9ybmh1Yg==",
        "UG9ybmh1Yg==",
        "W1l5XW91W1BwXW9ybg==",
        "cG9ybg==",
        "UG9ybg==",
        "W1h4XVtWdl1pZGVvcw==",
        "W1JyXWVkW1R0XXViZQ==",
        "W1h4XVtIaF1hbXN0ZXI=",
        "W1NzXXBhbmtbV3ddaXJl",
        "W1NzXXBhbmtbQmJdYW5n",
        "W1R0XXViZTg=",
        "W1l5XW91W0pqXWl6eg==",
        "W0JiXXJhenplcnM=",
        "W05uXWF1Z2h0eVsgXT9bQWFdbWVyaWNh",
        "5L2c54ix",
        "5YGa54ix",
        "5oCn5Lqk",
        "5oCn54ix",
        "6Ieq5oWw",
        "6Zi06IyO",
        "5rer5aaH",
        "6IKb5Lqk",
        "5Lqk6YWN",
        "5oCn5YWz57O7",
        "5oCn5rS75Yqo",
        "6Imy5oOF",
        "6Imy5Zu+",
        "5rap5Zu+",
        "6KO45L2T",
        "5bCP56m0",
        "5rer6I2h",
        "5oCn54ix",
        "57+75aKZ",
        "VlBO",
        "56eR5a2m5LiK572R",
        "5oyC5qKv5a2Q",
        "R0ZX"
    ],
    encoding: "base64",
    original_count: 71
}

/**
 * 敏感词过滤结果接口
 */
interface FilterResult {
    /** 是否包含敏感词 */
    hasSensitiveWords: boolean;
    /** 检测到的敏感词列表 */
    detectedWords: string[];
    /** 过滤后的文本（敏感词被替换） */
    filteredText: string;
    /** 原始文本 */
    originalText: string;
    /** 是否需要跳转到被捕页面 */
    shouldRedirectToArrested: boolean;
}

/**
 * 敏感词配置接口
 */
interface SensitiveWordsConfig {
    mask: string;
    mask_word: string;
    words: string[];
    encoding?: string;
    original_count?: number;
}

/**
 * 敏感词过滤器类
 */
export class SensitiveWordFilter {
    private sensitiveWords: string[] = [];
    private config: SensitiveWordsConfig | null = null;
    private isInitialized: boolean = false;

    constructor() {
        this.config = sensitiveWordsConfig;
        this.initialize();
    }

    /**
     * 初始化敏感词列表
     */
    async initialize(): Promise<boolean> {
        try {
            if (!this.config || !this.config.words) {
                throw new Error('配置文件格式错误');
            }

            // 如果是编码后的文件，需要解码
            if (this.config.encoding === 'base64') {
                this.sensitiveWords = this.config.words.map(word =>
                    Buffer.from(word, 'base64').toString('utf8')
                );
            } else {
                this.sensitiveWords = [...this.config.words];
            }

            this.isInitialized = true;
            console.log(`✅ 敏感词过滤器初始化成功，加载了 ${this.sensitiveWords.length} 个敏感词`);
            return true;
        } catch (error) {
            console.error('❌ 初始化敏感词过滤器失败:', error);
            return false;
        }
    }

    /**
     * 检查文本中是否包含敏感词
     */
    checkText(text: string): FilterResult {
        if (!this.isInitialized) {
            throw new Error('过滤器未初始化，请先调用 initialize() 方法');
        }

        const detectedWords: string[] = [];
        let filteredText = text;

        // 检查每个敏感词
        for (const word of this.sensitiveWords) {
            // 处理正则表达式格式的敏感词
            const isRegex = word.includes('[') || word.includes('(') || word.includes('|');

            if (isRegex) {
                try {
                    const regex = new RegExp(word, 'gi');
                    const matches = text.match(regex);
                    if (matches) {
                        matches.forEach(match => {
                            if (!detectedWords.includes(match)) {
                                detectedWords.push(match);
                            }
                        });
                        // 替换敏感词
                        filteredText = filteredText.replace(regex, this.getMaskString());
                    }
                } catch (regexError) {
                    console.error('正则表达式格式错误:', regexError);
                    // 如果正则表达式格式错误，按普通字符串处理
                    if (text.toLowerCase().includes(word.toLowerCase())) {
                        detectedWords.push(word);
                        filteredText = this.replaceSensitiveWord(filteredText, word);
                    }
                }
            } else {
                // 普通字符串匹配（忽略大小写）
                if (text.toLowerCase().includes(word.toLowerCase())) {
                    detectedWords.push(word);
                    filteredText = this.replaceSensitiveWord(filteredText, word);
                }
            }
        }

        const hasSensitiveWords = detectedWords.length > 0;

        return {
            hasSensitiveWords,
            detectedWords,
            filteredText,
            originalText: text,
            shouldRedirectToArrested: hasSensitiveWords
        };
    }

    /**
     * 替换敏感词
     */
    private replaceSensitiveWord(text: string, word: string): string {
        if (!this.config) return text;

        const regex = new RegExp(word, 'gi');

        if (this.config.mask_word && this.config.mask_word.trim() !== '') {
            // 如果设置了完整替换词，用它替换整个敏感词
            return text.replace(regex, this.config.mask_word);
        } else {
            // 否则用mask字符替换敏感词的每个字符
            return text.replace(regex, (match) => this.config!.mask.repeat(match.length));
        }
    }

    /**
     * 获取遮罩字符串
     */
    private getMaskString(): (match: string) => string {
        return (match: string) => {
            if (this.config?.mask_word && this.config.mask_word.trim() !== '') {
                return this.config.mask_word;
            } else {
                return (this.config?.mask || '*').repeat(match.length);
            }
        };
    }

    /**
     * 批量检查文本数组
     */
    checkTextArray(texts: string[]): FilterResult[] {
        return texts.map(text => this.checkText(text));
    }

    /**
     * 检查文本并决定是否跳转
     */
    async checkAndRedirect(text: string, redirectCallback?: () => void): Promise<FilterResult> {
        const result = this.checkText(text);

        if (result.shouldRedirectToArrested) {
            console.warn(`🚨 检测到敏感词: ${result.detectedWords.join(', ')}`);

            if (redirectCallback) {
                redirectCallback();
            } else {
                // 如果在浏览器环境中
                if (typeof window !== 'undefined' && window.location) {
                    window.location.href = '/arrested';
                } else {
                    console.log('🚨 应该跳转到 /arrested 页面');
                }
            }
        }

        return result;
    }
}

/**
 * 创建默认的敏感词过滤器实例
 */
export const createSensitiveWordFilter = (): SensitiveWordFilter => {
    return new SensitiveWordFilter();
};


/**
 * 快速检查并跳转函数
 */
export const quickCheck = async (
    text: string
): Promise<FilterResult> => {
    const filter = createSensitiveWordFilter();
    return filter.checkText(text);
};


export default SensitiveWordFilter;