#!/usr/bin/env python3
"""
岳阳经济技术开发区 - 通知公告 (yykfq.yueyang.gov.cn)
列表: /28420/28440/default.htm -> default_1.htm ~ default_N.htm 分页
详情: /28420/28440/content_XXXXXXX.html
正文: div.content-wrapper (GB2312编码)
"""
import sys, os, re, time, json
from datetime import datetime, timezone, timedelta
import requests, urllib3
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from crawler_lib import push_to_searchdb, clean_html
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

SITE_NAME = "岳阳经济技术开发区-通知公告"
BASE_URL = "https://yykfq.yueyang.gov.cn"
LIST_DIR = "/28420/28440"
LIST_URL = f"{BASE_URL}{LIST_DIR}/default.htm"
CUTOFF = (datetime.now(timezone.utc) - timedelta(days=365*3)).strftime("%Y-%m-%d")
MAX_PAGES = 5
HEADERS = {"User-Agent": "Mozilla/5.0 (compatible; Googlebot/2.1)", "Accept": "text/html,application/xhtml+xml"}

def fetch(url):
    try:
        r = requests.get(url, headers=HEADERS, timeout=20, verify=False)
        r.encoding = r.apparent_encoding or 'gb2312'
        return r.text
    except Exception as e:
        print(f"  请求失败: {e}")
        return None

def parse_list(html):
    items = []
    for m in re.finditer(r'<a[^>]*href=["\'](content_\d+\.html)["\'][^>]*title=["\']([^"\']*)["\']', html, re.I|re.S):
        href = m.group(1)
        title = m.group(2).strip()
        if title and len(title) > 5:
            items.append((title, f"{BASE_URL}{LIST_DIR}/{href}"))
    if not items:
        for m in re.finditer(r'<a[^>]*href=["\'](content_\d+\.html)["\'][^>]*>(.*?)</a>', html, re.I|re.S):
            href = m.group(1)
            title = re.sub(r'<[^>]+>', '', m.group(2)).strip()
            if title and len(title) > 5:
                items.append((title, f"{BASE_URL}{LIST_DIR}/{href}"))
    return items

def get_page_url(page):
    if page == 1:
        return LIST_URL
    return f"{BASE_URL}{LIST_DIR}/default_{page-1}.htm"

def fetch_detail(url):
    html = fetch(url)
    if not html:
        return "", "", "", []
    title = ""
    m = re.search(r'<meta[^>]*name="ArticleTitle"[^>]*content="([^"]+)"', html)
    if m:
        title = m.group(1).strip()
    if not title:
        m = re.search(r'<title>(.*?)</title>', html, re.I|re.S)
        if m:
            title = re.sub(r'-\s*岳阳经济技术开发区\s*', '', m.group(1)).strip()
            title = re.sub(r'&#\d+;', '', title).strip()
    pub_date = ""
    m = re.search(r'<meta[^>]*name="PubDate"[^>]*content="([^"]+)"', html)
    if m:
        pub_date = m.group(1)[:10]
    if not pub_date:
        m = re.search(r'日期[：:]\s*(\d{4}-\d{1,2}-\d{1,2})', html)
        if m:
            pub_date = m.group(1)
    content = ""
    attachments = []
    m = re.search(r'<div[^>]*class="content-wrapper[^"]*"[^>]*>(.*?)</div>\s*</div>\s*<div', html, re.I|re.S)
    if m and len(m.group(1)) > 50:
        content = m.group(1).strip()
    if not content:
        m = re.search(r'<div[^>]*class="content-wrapper[^"]*"[^>]*>(.*?)</div>', html, re.I|re.S)
        if m and len(m.group(1)) > 50:
            content = m.group(1).strip()
    if content:
        for am in re.finditer(r'<a[^>]*href="([^"]*\.(?:pdf|doc|docx|xls|xlsx|zip|rar))"[^>]*>([^<]+)</a>', content, re.I):
            f_url = am.group(1)
            f_name = re.sub(r'<[^>]+>', '', am.group(2)).strip()
            if f_url.startswith('/'):
                f_url = BASE_URL + f_url
            attachments.append({"name": f_name or f_url.rsplit('/',1)[-1], "url": f_url, "ext": f_url.rsplit('.',1)[-1].lower()})
        content = clean_html(content)
    return title, pub_date, content, attachments

def main():
    incremental = len(sys.argv) > 1 and sys.argv[1] in ('1', '--incremental', '-i')
    print(f"爬取: {SITE_NAME}" + (" [增量]" if incremental else ""))
    results = []
    pages = 1 if incremental else MAX_PAGES
    for page in range(1, pages+1):
        url = get_page_url(page)
        html = fetch(url)
        if not html:
            print(f"  第{page}页: 获取失败")
            break
        items = parse_list(html)
        if not items:
            print(f"  第{page}页: 无列表项")
            if page > 1:
                break
        print(f"  第{page}页: {len(items)} 条")
        for i, (title, url) in enumerate(items):
            print(f"  [{i+1}/{len(items)}] {title[:40]}...", end=" ", flush=True)
            dt, date, content, attachments = fetch_detail(url)
            if date and date < CUTOFF:
                print("过旧")
                continue
            if not content or len(content) < 50:
                print("无正文")
                continue
            final_title = dt or title
            summary = re.sub(r'<[^>]+>', '', content)[:200].strip()
            if not summary:
                summary = final_title[:200]
            attachments_json = json.dumps(attachments, ensure_ascii=False) if attachments else ""
            if attachments:
                print(f"附件:{len(attachments)}个", end=" ")
            results.append({"site_name": SITE_NAME, "title": final_title, "url": url,
                           "content": content, "summary": summary, "pub_date": date or "",
                           "attachments": attachments_json})
            print(f"OK ({len(content)}字)")
            time.sleep(0.5)
    if results:
        for item in results:
            item["source_url"] = item["url"]
        print(f"  [DEBUG] first source_url: {results[0].get('source_url','MISSING')[:80]}")
        print(f"  [DEBUG] total items: {len(results)}")
        push_to_searchdb(results, "yykfq_tzgg")
    print(f"完成! 共 {len(results)} 条")

if __name__ == "__main__":
    main()