import { PrismaClient } from "@prisma/client";
import { PrismaMariaDb } from "@prisma/adapter-mariadb";
import { Octokit } from "octokit";
import OpenAI from "openai";
import "dotenv/config";

const base = process.env.DATABASE_URL || "mysql://localhost:3306/zhuiguang_ai?charset=utf8mb4";
const sep = base.includes("?") ? "&" : "?";
const connectionString = `${base}${sep}connection_limit=20&pool_timeout=30`;
const adapter = new PrismaMariaDb(connectionString);
const prisma = new PrismaClient({ adapter });

const octokit = new Octokit({ auth: process.env.GITHUB_TOKEN });
const openai = new OpenAI({ apiKey: process.env.DEEPSEEK_API_KEY, baseURL: "https://api.deepseek.com/v1" });

const REVIEW_PROMPT = `你是AI技术资深评测师。请对以下AI开源项目进行五维评测，每个维度1-5分。

评测维度：
- capability：场景与能力（功能覆盖度、场景适配性、输出质量）
- devExp：开发体验（安装便捷度、文档质量、API设计、调试友好度）
- costLicense：成本与许可（开源协议友好度、部署成本、资源消耗）
- community：社区健康（Stars趋势、贡献者数量、Issue响应速度、更新频率）
- performance：性能稳定（推理速度、并发能力、稳定性、可扩展性）

项目信息：
名称：{name}
描述：{description}
GitHub Stars：{stars}
README摘要：{readme}

返回纯JSON：
{
  "capability": 4.5,
  "devExp": 4.0,
  "costLicense": 5.0,
  "community": 4.5,
  "performance": 4.0,
  "overall": 4.4,
  "reviews": {
    "capability": {"score": 4.5, "summary": "一句话总结", "detail": "详细分析"},
    "devExp": {"score": 4.0, "summary": "一句话总结", "detail": "详细分析"},
    "costLicense": {"score": 5.0, "summary": "一句话总结", "detail": "详细分析"},
    "community": {"score": 4.5, "summary": "一句话总结", "detail": "详细分析"},
    "performance": {"score": 4.0, "summary": "一句话总结", "detail": "详细分析"}
  },
  "tags": ["标签1", "标签2"]
}`;

function extractJSON(str) {
  const trimmed = str.trim();
  const codeBlockMatch = trimmed.match(/```(?:json)?\s*([\s\S]*?)```/);
  let jsonStr = codeBlockMatch ? codeBlockMatch[1].trim() : trimmed;
  const braceMatch = jsonStr.match(/\{[\s\S]*\}/);
  if (braceMatch) { try { return JSON.parse(braceMatch[0]); } catch {} }
  return JSON.parse(jsonStr);
}

function extractOwnerRepo(sourceUrl) {
  const match = sourceUrl.match(/github\.com\/([^/]+)\/([^/]+)/);
  if (!match) return null;
  return { owner: match[1], repo: match[2].replace(/\.git$/, "") };
}

async function getReadme(owner, repo) {
  try {
    const { data } = await octokit.rest.repos.getReadme({ owner, repo });
    const content = Buffer.from(data.content, "base64").toString("utf-8");
    return content.substring(0, 3000);
  } catch {
    return "(无法获取README)";
  }
}

async function main() {
  const startTime = new Date();
  const now = new Date();
  const cnOffset = 8 * 60 * 60 * 1000;
  const cnTime = new Date(now.getTime() + cnOffset);
  const today = cnTime.toISOString().split("T")[0];

  console.log(`🔥 [Task6] ${today} 评测最热工具...`);

  const unreviewed = await prisma.skill.findMany({
    where: {
      status: "published",
      sourceUrl: { contains: "github.com" },
      skillReview: null,
    },
    orderBy: [{ githubStars: "desc" }, { viewCount: "desc" }],
    take: 2,
    select: { id: true, name: true, description: true, sourceUrl: true, githubStars: true },
  });

  if (unreviewed.length === 0) {
    console.log("   所有热门技能已有评测，跳过");
    await prisma.taskLog.create({
      data: {
        taskKey: "task6-review-hot",
        taskName: "评测热门技能",
        status: "completed",
        startedAt: startTime,
        finishedAt: new Date(),
        duration: new Date().getTime() - startTime.getTime(),
        result: { reviewed: 0, message: "所有热门技能已有评测" },
      },
    });
    await prisma.$disconnect();
    return;
  }

  console.log(`   待评测: ${unreviewed.map((s) => s.name).join(", ")}`);

  let reviewed = 0;
  let failed = 0;
  const errors = [];

  for (const skill of unreviewed) {
    console.log(`\n   📦 评测: ${skill.name} (${skill.githubStars}⭐)`);

    const parsed = extractOwnerRepo(skill.sourceUrl);
    let readme = "(无README)";
    let stars = skill.githubStars;

    if (parsed) {
      readme = await getReadme(parsed.owner, parsed.repo);
      try {
        const { data } = await octokit.rest.repos.get({ owner: parsed.owner, repo: parsed.repo });
        stars = data.stargazers_count;
      } catch {}
    }

    const prompt = REVIEW_PROMPT
      .replace("{name}", skill.name)
      .replace("{description}", skill.description || "")
      .replace("{stars}", String(stars))
      .replace("{readme}", readme.substring(0, 2000));

    try {
      const completion = await openai.chat.completions.create({
        model: "deepseek-v4-pro",
        messages: [{ role: "user", content: prompt }],
        temperature: 0.3,
      });

      const content = completion.choices[0]?.message?.content;
      if (!content) throw new Error("DeepSeek返回为空");

      const parsed_review = extractJSON(content);
      const scores = [parsed_review.capability, parsed_review.devExp, parsed_review.costLicense, parsed_review.community, parsed_review.performance].filter((s) => typeof s === "number");
      const overall = parsed_review.overall || (scores.length > 0 ? Math.round((scores.reduce((a, b) => a + b, 0) / scores.length) * 10) / 10 : 3.0);

      await prisma.skillReview.create({
        data: {
          skillId: skill.id,
          capability: parsed_review.capability || 3.0,
          devExp: parsed_review.devExp || 3.0,
          costLicense: parsed_review.costLicense || 3.0,
          community: parsed_review.community || 3.0,
          performance: parsed_review.performance || 3.0,
          overall,
          reviews: parsed_review.reviews || {},
          tags: parsed_review.tags || [],
          status: "PUBLISHED",
          reviewedAt: new Date(),
        },
      });

      await prisma.skill.update({
        where: { id: skill.id },
        data: { lastReviewedAt: new Date() },
      });

      reviewed++;
      console.log(`   ✅ 评测完成: overall=${overall}`);
    } catch (e) {
      failed++;
      errors.push(`${skill.name}: ${e.message}`);
      console.error(`   ❌ 评测失败: ${e.message}`);
    }
  }

  const endTime = new Date();
  const duration = endTime.getTime() - startTime.getTime();
  const result = {
    total: unreviewed.length,
    reviewed,
    failed,
    duration: `${(duration / 1000).toFixed(1)}s`,
  };

  console.log(`\n🏁 [Task6] 完成: 评测${reviewed}个, 失败${failed}个`);

  await prisma.taskLog.create({
    data: {
      taskKey: "task6-review-hot",
      taskName: "评测热门技能",
      status: "completed",
      startedAt: startTime,
      finishedAt: endTime,
      duration,
      result,
      error: errors.length > 0 ? errors.slice(0, 5).join("\n") : null,
    },
  });

  await prisma.$disconnect();
}

main().catch(async (e) => {
  console.error("❌ 任务六失败:", e.message);
  if (prisma) {
    try {
      await prisma.taskLog.create({
        data: {
          taskKey: "task6-review-hot",
          taskName: "评测热门技能",
          status: "failed",
          startedAt: new Date(),
          finishedAt: new Date(),
          duration: 0,
          error: e.message,
        },
      });
    } catch {}
    await prisma.$disconnect();
  }
  process.exit(1);
});