#!/usr/bin/env python3
"""crawl_chaozhou_gsgg.py - 潮州市人民政府-公示公告 (静态p.over1 + 详情div.info)"""
import sys, os, requests, re
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 = '潮州市-公示公告'
HEADERS = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/120.0'}
BASE = 'https://www.chaozhou.gov.cn/zwgk/gsgg'

def fetch_urls_from_page(page_num):
    if page_num == 0:
        url = BASE + '/'
    else:
        url = f'{BASE}/index_{page_num + 1}.html'
    try:
        r = requests.get(url, timeout=(5, 15), headers=HEADERS, verify=False)
        r.encoding = 'utf-8'
    except:
        return []
    items = re.findall(
        r'<a href="([^"]+)"[^>]*>\s*<p class="over1">.*?<span>(.*?)</span>.*?</p>\s*<b>(\d{4}-\d{2}-\d{2})</b>',
        r.text, re.DOTALL
    )
    results = []
    for href, title, pub_date in items:
        if href.startswith('http'):
            full_url = href
        elif href.startswith('/'):
            full_url = 'https://www.chaozhou.gov.cn' + href
        elif href.startswith('./'):
            full_url = BASE + href[1:]
        else:
            full_url = BASE + '/' + href
        results.append({'url': full_url, 'pub_date': pub_date, 'title': title})
    return results

def fetch_detail(url):
    for _attempt in range(3):
        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'<h2[^>]*>(.*?)</h2>', r.text, re.DOTALL)
    if m:
        title = re.sub(r'<[^>]+>', '', m.group(1)).strip()
    if not title:
        m = re.search(r'<title>([^<]*)</title>', r.text, re.DOTALL)
        if m:
            title = re.sub(r'<[^>]+>', '', m.group(1)).strip()
            title = re.sub(r'\s*[-_|].*$', '', title).strip()
    content = ''
    idx = r.text.find('<div class="info">')
    if idx > 0:
        start = idx + len('<div class="info">')
        depth = 1
        pos = start
        while pos < len(r.text) and depth > 0:
            if r.text[pos:pos+4] == '<div':
                depth += 1
                pos += 4
            elif r.text[pos:pos+6] == '</div>':
                depth -= 1
                pos += 6
            else:
                pos += 1
        content = r.text[start:pos-6].strip()
    return title, content

def run(incremental=False):
    records = []
    seen = set()
    max_pages = 1 if incremental else 30
    for pg in range(max_pages):
        items = fetch_urls_from_page(pg)
        if not items:
            break
        print(f"  Page {pg+1}: {len(items)} items")
        for it in items:
            if it['pub_date'] < CUTOFF:
                continue
            if it['url'] in seen:
                continue
            seen.add(it['url'])
            title, content = fetch_detail(it['url'])
            if not title or not content.strip():
                continue
            records.append({
                'title': title,
                '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, "chaozhou_gsgg")
    return len(valid)

if __name__ == '__main__':
    inc = '--incremental' in sys.argv
    cnt = run(incremental=inc)
    print(f"Done: {cnt} records")