from fastapi import APIRouter, HTTPException, Query
from pathlib import Path
import os
from datetime import datetime, date

router = APIRouter(prefix="/api/articles", tags=["articles"])

PROJECT_ROOT = Path('/root/openclaw-workspace/projects/yu-zhi-ran')

@router.get("/drafts")
def list_drafts(publish_date: str = None):
    """列出指定日期的草稿文件（三平台）"""
    if not publish_date:
        publish_date = date.today().isoformat()
    base_dir = PROJECT_ROOT / "automation" / "data" / "releases" / publish_date
    if not base_dir.exists():
        raise HTTPException(status_code=404, detail="No releases for this date")
    
    platforms = ["zhihu", "wechat", "xiaohongshu"]
    result = {}
    for p in platforms:
        path = base_dir / p
        if path.exists():
            files = sorted([f.name for f in path.glob("*.html") if f.is_file()])
            result[p] = files
        else:
            result[p] = []
    return {"date": publish_date, "files": result}

@router.get("/{topic_id}/preview")
def preview_article(topic_id: str, platform: str = "zhihu", publish_date: str = None):
    """预览某选题的HTML内容"""
    if not publish_date:
        publish_date = date.today().isoformat()
    filename = f"{platform}_{topic_id}_{platform}.html"
    file_path = PROJECT_ROOT / "automation" / "data" / "releases" / publish_date / platform / filename
    # DEBUG
    print(f"[DEBUG] file_path={file_path}, exists={file_path.exists()}")
    if not file_path.exists():
        raise HTTPException(status_code=404, detail=f"Article not found: {file_path}")
    content = file_path.read_text(encoding='utf-8')
    return {"topic_id": topic_id, "platform": platform, "html": content}

@router.get("/optimization-report")
def get_optimization_report(publish_date: str = None):
    """获取合规优化报告"""
    if not publish_date:
        publish_date = date.today().isoformat()
    report_path = PROJECT_ROOT / "automation" / "data" / "drafts" / publish_date / "optimization_report.json"
    if not report_path.exists():
        raise HTTPException(status_code=404, detail="No optimization report for this date")
    report = report_path.read_text(encoding='utf-8')
    import json
    return json.loads(report)