/**
 * RVW稿件审查模块 - 临床专业评估服务
 * @module rvw/services/clinicalService
 * 
 * 使用 PromptService 获取 RVW_CLINICAL prompt
 * 返回纯 Markdown 报告（无分数）
 */

import { LLMFactory } from '../../../common/llm/adapters/LLMFactory.js';
import { ModelType } from '../../../common/llm/adapters/types.js';
import { logger } from '../../../common/logging/index.js';
import { prisma } from '../../../config/database.js';
import { getPromptService } from '../../../common/prompt/index.js';
import { composeRvwSystemPrompt, sanitizeRvwBusinessPrompt } from './promptProtocols.js';

export interface ClinicalReviewResult {
  report: string;
  summary: string;
}

/**
 * 临床专业评估
 * @param text 稿件文本
 * @param modelType 模型类型
 * @param userId 用户ID（用于灰度预览判断）
 * @returns 评估结果（Markdown 报告 + 摘要）
 */
export async function reviewClinical(
  text: string,
  modelType: ModelType = 'deepseek-v3',
  userId?: string,
  tenantExpertPrompt?: string | null
): Promise<ClinicalReviewResult> {
  try {
    let businessPrompt = tenantExpertPrompt?.trim() || '';
    let isDraft = false;
    if (!businessPrompt) {
      const promptService = getPromptService(prisma);
      const result = await promptService.get('RVW_CLINICAL', {}, { userId });
      businessPrompt = result.content;
      isDraft = result.isDraft;
    }
    businessPrompt = sanitizeRvwBusinessPrompt('clinical', businessPrompt);

    if (isDraft) {
      logger.info('[RVW:Clinical] 使用 DRAFT 版本 Prompt（调试模式）', { userId });
    }

    const messages = [
      { role: 'system' as const, content: composeRvwSystemPrompt('clinical', businessPrompt) },
      {
        role: 'user' as const,
        content: `请对以下医学稿件进行临床专业评估。\n\n稿件内容如下：\n${text}`,
      },
    ];

    logger.info('[RVW:Clinical] 开始临床专业评估', { modelType });
    const llmAdapter = LLMFactory.getAdapter(modelType);
    const response = await llmAdapter.chat(messages, {
      temperature: 0.3,
      maxTokens: 8000,
    });
    const content = response.content ?? '';
    logger.info('[RVW:Clinical] 评估完成', {
      modelType,
      responseLength: content.length,
    });

    // 优先提取“总体评价”段落作为摘要，提取失败再兜底首段文本
    let summary = '临床专业评估已完成';
    const overallMatch = content.match(/(?:^|\n)\s*(?:#*\s*)?1[\.\、]\s*总体评价[\s\S]*?(?:\n(?:#*\s*)?2[\.\、]\s*详细问题清单与建议|$)/);
    if (overallMatch) {
      const extracted = overallMatch[0]
        .replace(/(?:^|\n)\s*(?:#*\s*)?1[\.\、]\s*总体评价\s*/m, '')
        .trim();
      if (extracted) {
        summary = extracted.substring(0, 200);
      }
    } else {
      const lines = content.split('\n').filter(l => l.trim() && !l.startsWith('#'));
      if (lines.length > 0) {
        summary = lines[0].trim().substring(0, 200);
      }
    }

    return { report: content, summary };
  } catch (error) {
    logger.error('[RVW:Clinical] 临床专业评估失败', {
      error: error instanceof Error ? error.message : 'Unknown error',
      stack: error instanceof Error ? error.stack : undefined,
    });
    throw new Error(`临床专业评估失败: ${error instanceof Error ? error.message : 'Unknown error'}`);
  }
}