import { getWebMcpTool } from './webMcpService';

export interface WebMcpChatTemplate {
    toolName?: string;
    label: string;
    pattern: RegExp;
    examples: string[];
    requiresConfirmation: boolean;
    parse: (match: RegExpMatchArray) => Record<string, unknown>;
}

const template = (
    toolName: string | undefined,
    label: string,
    pattern: RegExp,
    examples: string[],
    parse: (match: RegExpMatchArray) => Record<string, unknown>
): WebMcpChatTemplate => ({
    toolName,
    label,
    pattern,
    examples,
    parse,
    requiresConfirmation: toolName ? Boolean(getWebMcpTool(toolName)?.requiresConfirmation) : false,
});

export const webMcpChatTemplates: ReadonlyArray<WebMcpChatTemplate> = [
    template('list_documents', '列出我的文档', /^列出(?:我的|当前用户的)?文档$/, ['列出我的文档'], () => ({})),
    template('open_document', '打开文档', /^(?:打开|查看)\s+(.+?)\s+文档$/, ['查看 doc-abc123 文档'], (match) => ({ documentId: match[1] })),
    template('get_document', '读取文档', /^读取文档\s+(\S+)$/, ['读取文档 doc-abc123'], (match) => ({ documentId: match[1] })),
    template('search_document', '搜索文档', /^搜索文档\s+(\S+)\s+(.+)$/, ['搜索文档 doc-abc123 WebMCP'], (match) => ({ documentId: match[1], query: match[2] })),
    template('get_block', '读取文档块', /^读取文档块\s+(\S+)\s+(\S+)$/, ['读取文档块 doc-abc123 block-p-50'], (match) => ({ documentId: match[1], blockId: match[2] })),
    template('get_document_toc', '查看文档目录', /^查看文档目录\s+(\S+)$/, ['查看文档目录 doc-abc123'], (match) => ({ documentId: match[1] })),
    template('get_document_stats', '查看文档统计', /^查看文档统计\s+(\S+)$/, ['查看文档统计 doc-abc123'], (match) => ({ documentId: match[1] })),
    template('list_export_records', '查看我的导出记录', /^查看我的导出记录$/, ['查看我的导出记录'], () => ({})),
    template('insert_block', '向文档插入段落', /^向文档\s+(\S+)\s+插入段落：(.+)$/, ['向文档 doc-abc123 插入段落：新增内容'], (match) => ({ documentId: match[1], type: 'paragraph', content: match[2] })),
    template('update_block', '更新文档块', /^更新文档块\s+(\S+)\s+(\S+)\s+为：(.+)$/, ['更新文档块 doc-abc123 block-p-50 为：新内容'], (match) => ({ documentId: match[1], blockId: match[2], content: match[3] })),
    template('delete_block', '删除文档块', /^删除文档块\s+(\S+)\s+(\S+)$/, ['删除文档块 doc-abc123 block-p-50'], (match) => ({ documentId: match[1], blockId: match[2] })),
    template('export_document', '导出文档', /^导出文档\s+(\S+)\s+为\s*Word$/i, ['导出文档 doc-abc123 为 Word'], (match) => ({ documentId: match[1] })),
    template('download_export_record', '下载导出记录', /^下载导出记录\s+(\S+)$/, ['下载导出记录 export-abc123'], (match) => ({ recordId: match[1] })),
];

export const webMcpTemplateHelp = (): string =>
    webMcpChatTemplates
        .map((item) => `${item.label}：${item.examples.join('；')}${item.requiresConfirmation ? '（需要确认）' : ''}`)
        .join('\n');

export const matchWebMcpChatTemplate = (content: string): { template: WebMcpChatTemplate; input: Record<string, unknown> } | null => {
    const normalized = content.trim().replace(/^调用\s*WebMCP\s*/i, '');
    for (const item of webMcpChatTemplates) {
        const match = normalized.match(item.pattern);
        if (match) return { template: item, input: item.parse(match) };
    }
    return null;
};

export const getWebMcpChatTemplates = (): ReadonlyArray<WebMcpChatTemplate> => webMcpChatTemplates;