#!/usr/bin/env python3
"""crawl_xuancheng_sthjj.py - 宣城市生态环境局-公示公告

站点: https://sthjj.xuancheng.gov.cn/News/showList/43279/page_1.html
CMS: 宣城生态环境 (UTF-8, Vue分页组件)
列表: ul.listright-box 下 li > span[YYYY-MM-DD] + a[title=标题](href=/News/show/ID.html)
分页: /News/showList/43279/page_N.html (每页20条, 共121页2413条)
详情: <title> 标题 + div#zoom 正文
"""
import sys, os, requests, re, argparse
from datetime import datetime, timedelta

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from crawler_lib import push_to_searchdb

CUTOFF = (datetime.now() - timedelta(days=365*3)).strftime('%Y-%m-%d')
SITE_NAME = '宣城市生态环境局-公示公告'
HEADERS = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/120.0'}
BASE = 'https://sthjj.xuancheng.gov.cn'
LIST_PATH = '/News/showList/43279'

def fetch_list(page_idx):
    url = f'{BASE}{LIST_PATH}/page_{page_idx}.html'
    try:
        r = requests.get(url, timeout=(5, 15), headers=HEADERS, verify=False)
        r.encoding = 'utf-8'
    except:
        return []
    items = re.findall(
        r'<span>\[(\d{4}-\d{2}-\d{2})\]</span>\s*<a href="(/News/show/\d+\.html)" title="([^"]*)"',
        r.text, re.DOTALL
    )
    results = []
    for pd, href, title in items:
        title = re.sub(r'\s+', '', title).strip()
        if len(title) < 4:
            continue
        url = BASE + href
        results.append({'url': url, 'pub_date': pd, 'title': title})
    return results

def fetch_detail(url):
    for _attempt in range(2):
        try:
            r = requests.get(url, timeout=(5, 15), headers=HEADERS, verify=False)
            r.encoding = 'utf-8'
            break
        except:
            r = None
    if r is None:
        return '', ''
    title = ''
    m = re.search(r'<title>\s*([^<]+?)\s*</title>', r.text, re.DOTALL)
    if m:
        title = re.sub(r'\s+', '', m.group(1)).strip()
        title = re.split(r'[-–—|_]', title)[0].strip()
    content = ''
    m = re.search(r'id="zoom"[^>]*>(.*?)</div>', r.text, re.DOTALL)
    if m:
        content = m.group(1).strip()
    if not content.strip():
        m = re.search(r'class="[^"]*content[^"]*"[^>]*>(.*?)</div>', r.text, re.DOTALL)
        if m:
            content = m.group(1).strip()
    content = re.sub(r'src="(?!https?://|//)(/[^"]+)"', lambda mm: f'src="{BASE}{mm.group(1)}"', content)
    return title, content

def run(max_pages=5):
    records = []
    seen = set()
    for pg in range(max_pages):
        items = fetch_list(pg + 1)
        if not items:
            print(f"  Page {pg+1}: 0 items (stop)")
            break
        print(f"  Page {pg+1}: {len(items)} items")
        for it in items:
            if it['pub_date'] and it['pub_date'] < CUTOFF:
                continue
            if it['url'] in seen:
                continue
            seen.add(it['url'])
            title, content = fetch_detail(it['url'])
            if not title:
                title = it['title']
            if not content.strip():
                continue
            records.append({
                'title': title, 'url': it['url'], 'source_url': it['url'],
                'pub_date': it['pub_date'],
                'site_name': SITE_NAME, 'content': content, 'summary': '',
            })
    print(f"  Total: {len(records)} items")
    valid = [r for r in records if r['content'].strip()]
    if valid:
        push_to_searchdb(valid, "xuancheng_sthjj")
    return len(valid)

if __name__ == '__main__':
    ap = argparse.ArgumentParser()
    ap.add_argument('--pages', type=int, default=5)
    args = ap.parse_args()
    cnt = run(max_pages=args.pages)
    print(f"Done: {cnt} records")