#!/usr/bin/env python3
"""
扬州经济技术开发区-通知公告 独立爬虫
站点: kfq.yangzhou.gov.cn
栏目: 通知公告 (tzgg, JPAAS publish-system)
"""

import requests, re, sqlite3, time, sys, json, warnings
warnings.filterwarnings('ignore')
from datetime import datetime, timedelta
import os
import sys as _SYS
_MAX_PG = int(_SYS.argv[1]) if len(_SYS.argv) > 1 and _SYS.argv[1].isdigit() else None
if _MAX_PG is not None:
    print('[AutoPg] max_pages=' + str(_MAX_PG))
# END AUTO PAGES

SEARCH_DB = os.getenv("SEARCH_DB", "/root/search.db")
SITE_NAME = "扬州经开区-通知公告"
DOMAIN = "kfq.yangzhou.gov.cn"

CUTOFF = (datetime.now() - timedelta(days=3*365)).strftime("%Y-%m-%d")
HEADERS = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"}

API_URL = "https://kfq.yangzhou.gov.cn/api-gateway/jpaas-publish-server/front/page/build/unit"
API_PARAMS = {
    "parseType": "bulidstatic",
    "webId": "l3juUa1slUgnLQOQgtJwy",
    "tplSetId": "CU3LRJa5b4SPXybhicnZl",
    "pageType": "column",
    "tagId": "列表列表",
    "editType": "null",
    "pageId": "Lw8wtupr8vbNtGQMW3yCr",
}


def fetch_list(page, page_size=15):
    """获取API列表页"""
    params = dict(API_PARAMS)
    params["paramJson"] = json.dumps({"pageNo": page, "pageSize": page_size})
    for retry in range(3):
        try:
            r = requests.get(API_URL, params=params, headers=HEADERS, timeout=15, verify=False)
            if r.status_code == 200:
                d = r.json()
                html = d.get("data", {}).get("html", "")
                # Parse items
                items = []
                for li in re.findall(r'<li[^>]*>(.*?)</li>', html, re.DOTALL):
                    m = re.search(
                        r'title="([^"]*)"[^>]*href="([^"]+)"[^>]*>([^<]+)</a>\s*<span[^>]*>(\d{4}-\d{2}-\d{2})</span>',
                        li)
                    if m:
                        items.append({
                            "url": "https://" + DOMAIN + m.group(2),
                            "title": m.group(1),
                            "date": m.group(4),
                        })
                # Check total count
                count_m = re.search(r'count="(\d+)"', html)
                total_count = int(count_m.group(1)) if count_m else 0
                return items, total_count
        except Exception as e:
            if retry < 2:
                time.sleep(2)
    return [], 0


def extract_content(html):
    """提取正文 - id=zoom"""
    for pat, tag in [('id="zoom"', 'div'), ('class="contentShow"', 'div')]:
        i = html.find(pat)
        if i < 0:
            continue
        ds = html.rfind(f"<{tag}", 0, i)
        if ds < 0:
            continue
        s = html[ds:]
        d = 0
        for j in range(len(s)):
            if s[j:j+4] == f"<{tag}" and (j+4 >= len(s) or s[j+4] in " >\n\r\t"):
                d += 1
            elif s[j:j+3+len(tag)] == f"</{tag}>":
                d -= 1
                if d == 0:
                    gt = s.find(">", 0, j)
                    c = s[gt+1:j] if gt > 0 else s[7:j]
                    c = re.sub(r'<(script|style)[^>]*>.*?</\1>', '', c, flags=re.DOTALL|re.I)
                    text = re.sub(r'<[^>]+>', '', c).strip()
                    if len(text) > 50:
                        return c.strip()
    return ""


def extract_meta(html):
    """提取标题和日期"""
    title = ""
    tm = re.search(r'<meta[^>]*name="ArticleTitle"[^>]*content="([^"]*)"', html)
    if tm:
        title = tm.group(1)
    if not title:
        ttm = re.search(r'<title>(.*?)<', html)
        if ttm:
            title = ttm.group(1).strip()
    date = ""
    for pm in re.finditer(r'PubDate[^>]*content="([^"]*)"', html):
        d = pm.group(1).strip()
        cm = re.match(r'(\d{4})-(\d{1,2})-(\d{1,2})', d)
        if cm:
            date = f"{cm.group(1)}-{cm.group(2).zfill(2)}-{cm.group(3).zfill(2)}"
            break
    if not date:
        dm = re.search(r'(\d{4}-\d{2}-\d{2})', html)
        if dm:
            date = dm.group(1)
    return title, date


def fetch_url(url):
    for retry in range(3):
        try:
            r = requests.get(url, headers=HEADERS, timeout=30, verify=False)
            if r.status_code == 200:
                r.encoding = "utf-8"
                return r.text
        except Exception as e:
            if retry < 2:
                time.sleep(2)
    return None


def insert_article(url, title, date, content):
    db = sqlite3.connect(SEARCH_DB, timeout=60)
    db.execute("PRAGMA journal_mode=WAL")
    try:
        db.execute(
            "INSERT OR IGNORE INTO gov_raw(site_name,source_url,page_url,title,publish_date,content,summary,status,category) VALUES(?,?,?,?,?,?,?,?,?)",
            (SITE_NAME, url, url, title, date, content, title[:200], "active", "通知公告"))
        affected = db.total_changes
        db.commit()
        if affected:
            db.execute(
                "INSERT OR REPLACE INTO gov_search(rowid,title,site_name,summary) SELECT r.id,r.title,r.site_name,r.summary FROM gov_raw r WHERE r.page_url=? AND r.id NOT IN (SELECT rowid FROM gov_search)",
                (url,))
            db.commit()
        db.close()
        return affected
    except Exception as e:
        db.close()
        print(f"  ❌ DB error: {e}")
        return 0


def run(max_pages=200):
    print(f"\n{'='*50}")
    print(f"🚀 {SITE_NAME}")
    print(f"{'='*50}")

    # 先看API共多少页
    items, total = fetch_list(1)
    if not items:
        print("⚠  API无返回")
        return
    print(f"  共{total}条, 15条/页 = {(total+14)//15}页")
    total_pages = min(max_pages, (total + 14) // 15)

    all_list_items = list(items)
    for pg in range(2, min(total_pages, _MAX_PG or total_pages) + 1):
        its, _ = fetch_list(pg)
        if not its:
            print(f"  第{pg}页: 空 -> 结束")
            break
        all_list_items.extend(its)
        dates = [it["date"] for it in its]
        print(f"  第{pg}页: {len(its)} 条 ({dates[0]} ~ {dates[-1]})")
        # 如果该页最晚日期已经早于3年截断，停止翻页
        if max(dates) < CUTOFF:
            print(f"  该页已全部早于截断日{CUTOFF}，停止翻页")
            break
        time.sleep(0.15)

    print(f"\n📊 API共 {len(all_list_items)} 条")
    new = skip = no_body = err = 0
    for i, item in enumerate(all_list_items, 1):
        if item["date"] and item["date"] < CUTOFF:
            skip += 1
            continue

        html = fetch_url(item["url"])
        if not html:
            err += 1
            continue

        pt, pd = extract_meta(html)
        real_title = pt if pt else item["title"]
        real_date = pd if pd else item["date"]

        if real_date and real_date < CUTOFF:
            skip += 1
            continue

        content = extract_content(html)
        text_len = len(re.sub(r'<[^>]+>', '', content).strip()) if content else 0
        if text_len < 10:
            no_body += 1
            if text_len == 0:
                print(f"  ⚠ 空正文: {real_title[:30]}")
            continue

        if insert_article(item["url"], real_title, real_date, content):
            new += 1
        else:
            skip += 1

        if i % 5 == 0:
            print(f"  ...{i}/{len(all_list_items)}")
        time.sleep(0.3)

    print(f"\n📊 FTS同步...")
    db = sqlite3.connect(SEARCH_DB, timeout=60)
    # QC20260926 去掉手写 gov_search 整站删除(抢锁源; FTS 由 gov_raw 触发器维护) 
    # db.execute("DELETE FROM gov_search WHERE site_name=?", (SITE_NAME,))
    db.execute("INSERT OR REPLACE INTO gov_search(rowid,title,site_name,summary) SELECT rowid,title,site_name,summary FROM gov_raw WHERE site_name=?", (SITE_NAME,))
    db.commit()
    c = db.execute("SELECT COUNT(*) FROM gov_search WHERE site_name=?", (SITE_NAME,))
    cnt = c.fetchone()[0]
    db.close()
    print(f"  FTS: {cnt} 条")
    print(f"\n✅ {SITE_NAME}: 新增{new}, 跳过{skip}, 空正文{no_body}, 错误{err}, FTS共{cnt}条")


if __name__ == "__main__":
    mp = int(sys.argv[1]) if len(sys.argv) > 1 else 200
    run(mp)
