# ==========================================
# crawlers/sun_wms.py - Sun-WMS 크롤러 (6호기)
# ==========================================

import requests
import re
import time
from .base import create_session, safe_float

def fetch_data(plant_info):
    """
    Sun-WMS 발전소 데이터 수집
    """
    plant_id = plant_info.get('id', 'sunwms-06')
    auth = plant_info.get('auth', {})
    system = plant_info.get('system', {})
    company_name = plant_info.get('company_name', '태양과바람')
    plant_name = plant_info.get('name', '6호기')
    
    payload_id = auth.get('payload_id', '')
    payload_pw = auth.get('payload_pw', '')
    login_url = system.get('login_url', '')
    data_url = system.get('data_url', '')
    
    session = create_session()
    
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/120.0.0.0 Safari/537.36',
        'Referer': 'http://tb6.sun-wms.com/public/main/login.php',
        'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
    }

    # 1. 로그인
    login_data = {
        'act': 'loginChk',
        'user_id': payload_id,
        'user_pass': payload_pw
    }

    try:
        res = session.post(login_url, data=login_data, headers=headers)
        if res.status_code != 200:
            return []
    except Exception as e:
        print(f"❌ {plant_name} 접속 에러: {e}")
        return []

    # 2. 데이터 요청
    try:
        timestamp = int(time.time() * 1000)
        res = session.get(f"{data_url}?time={timestamp}", headers=headers)
        res.encoding = 'euc-kr'
        
        content = res.text
        
        match_kw = re.search(r"id=['\"]cur_power['\"].*?value=['\"]([^'\"]+)['\"]", content)
        curr_kw = float(match_kw.group(1)) if match_kw else 0.0
        
        match_today = re.search(r"id=['\"]today_power['\"].*?value=['\"]([^'\"]+)['\"]", content)
        today_kwh = float(match_today.group(1)) if match_today else 0.0
        
        status = "🟢 정상" if curr_kw > 0 else "💤 대기"
        
        return [{
            'id': plant_id,
            'name': f'{company_name} {plant_name}',
            'kw': curr_kw,
            'today': today_kwh,
            'status': status
        }]

    except Exception as e:
        print(f"❌ {plant_name} 에러: {e}")
        return []


def fetch_history_hourly(plant_info, start_date, end_date):
    """
    Sun-WMS 발전소의 시간대별 과거 데이터 수집
    
    실제 엔드포인트: /public/statics/statics.php
    파라미터: tab01=0&tab02=1&tab03=2&tord=1&s_day=YYYY-MM-DD
    """
    from datetime import datetime, timedelta
    
    results = []
    plant_id = plant_info.get('id', 'sunwms-06')
    auth = plant_info.get('auth', {})
    system = plant_info.get('system', {})
    plant_name = plant_info.get('name', '6호기')
    
    payload_id = auth.get('payload_id', '')
    payload_pw = auth.get('payload_pw', '')
    login_url = system.get('login_url', '')
    
    # base_url 추출
    base_url = system.get('base_url', '')
    if not base_url and 'http' in login_url:
        base_url = login_url.split('/public')[0]
    
    statics_url = system.get('statics_url', f"{base_url}/public/statics/statics.php")
    
    session = create_session()
    
    print(f"\n{'='*60}")
    print(f"[Sun-WMS History] {plant_name} ({start_date} ~ {end_date})")
    print(f"{'='*60}")
    
    headers = {
        'User-Agent': 'Mozilla/5.0',
        'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
    }
    
    login_data = {'act': 'loginChk', 'user_id': payload_id, 'user_pass': payload_pw}
    
    try:
        res = session.post(login_url, data=login_data, headers=headers)
        if res.status_code == 200:
            print("  ✓ Login successful")
        else:
            print("  ✗ Login failed")
            return results
    except Exception as e:
        print(f"  ✗ Login error: {e}")
        return results
    
    # 날짜 반복
    current_date = datetime.strptime(start_date, '%Y-%m-%d')
    end_dt = datetime.strptime(end_date, '%Y-%m-%d')
    
    while current_date <= end_dt:
        date_str = current_date.strftime('%Y-%m-%d')
        
        # 실제 확인된 시간별 엔드포인트
        params = {
            'tab01': '0',
            'tab02': '1',
            'tab03': '2',
            'tord': '1',
            's_day': date_str
        }
        
        try:
            res = session.get(statics_url, params=params, headers=headers, timeout=10)
            res.encoding = 'euc-kr'
            
            if res.status_code == 200:
                data = res.json()
                # 시간별 데이터 파싱
                hourly_data = data.get('data', []) or data.get('list', [])
                
                if isinstance(hourly_data, list) and len(hourly_data) > 0:
                    print(f"  ✓ Found {len(hourly_data)} hourly records")
                    
                    for item in hourly_data:
                        hour = str(item.get('hour', item.get('time', '00'))).zfill(2)
                        generation_kwh = safe_float(item.get('generation', item.get('kwh', 0)))
                        current_kw = safe_float(item.get('power', item.get('kw', 0)))
                        
                        timestamp = f"{date_str} {hour}:00:00"
                        
                        results.append({
                            'plant_id': plant_id,
                            'timestamp': timestamp,
                            'generation_kwh': generation_kwh,
                            'current_kw': current_kw
                        })
                else:
                    print(f"  ⚠ No data for {date_str}")
            else:
                print(f"  ✗ HTTP {res.status_code}")
                
        except Exception as e:
            print(f"  ✗ Error: {e}")
        
        current_date += timedelta(days=1)
    
    print(f"\n{'='*60}")
    print(f"[Total] Collected {len(results)} hourly records")
    print(f"{'='*60}\n")
    
    return results


def fetch_history_daily(plant_info, start_date, end_date):
    """
    Sun-WMS 발전소의 일별 과거 데이터 수집
    
    실제 엔드포인트: /public/statics/statics.php
    파라미터: tab01=0&tab02=2&tab03=2&tord=2&s_day=YYYY-MM-DD&e_day=YYYY-MM-DD
    """
    from datetime import datetime
    
    results = []
    plant_id = plant_info.get('id', 'sunwms-06')
    auth = plant_info.get('auth', {})
    system = plant_info.get('system', {})
    plant_name = plant_info.get('name', '6호기')
    
    payload_id = auth.get('payload_id', '')
    payload_pw = auth.get('payload_pw', '')
    login_url = system.get('login_url', '')
    
    # base_url 추출
    base_url = system.get('base_url', '')
    if not base_url and 'http' in login_url:
        base_url = login_url.split('/public')[0]
    
    statics_url = system.get('statics_url', f"{base_url}/public/statics/statics.php")
    
    session = create_session()
    
    print(f"\n{'='*60}")
    print(f"[Sun-WMS Daily] {plant_name} ({start_date} ~ {end_date})")
    print(f"{'='*60}")
    
    headers = {
        'User-Agent': 'Mozilla/5.0',
        'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
    }
    
    login_data = {'act': 'loginChk', 'user_id': payload_id, 'user_pass': payload_pw}
    
    try:
        res = session.post(login_url, data=login_data, headers=headers)
        if res.status_code == 200:
            print("  ✓ Login successful")
        else:
            print("  ✗ Login failed")
            return results
    except Exception as e:
        print(f"  ✗ Login error: {e}")
        return results
    
    # 실제 확인된 일별 엔드포인트
    params = {
        'tab01': '0',
        'tab02': '2',
        'tab03': '2',
        'tord': '2',
        's_day': start_date,
        'e_day': end_date
    }
    
    try:
        res = session.get(statics_url, params=params, headers=headers, timeout=10)
        res.encoding = 'euc-kr'
        
        if res.status_code == 200:
            data = res.json()
            # 일별 데이터 파싱
            daily_data = data.get('data', []) or data.get('list', [])
            
            if isinstance(daily_data, list) and len(daily_data) > 0:
                for item in daily_data:
                    date_str = item.get('date', item.get('day', ''))
                    generation_kwh = safe_float(item.get('generation', item.get('kwh', 0)))
                    current_kw = safe_float(item.get('power', item.get('kw', 0)))
                    
                    results.append({
                        'plant_id': plant_id,
                        'date': date_str,
                        'generation_kwh': generation_kwh,
                        'current_kw': current_kw
                    })
                    print(f"  ✓ {date_str}: {generation_kwh:.2f}kWh")
    except Exception as e:
        print(f"  ✗ Error: {e}")
    
    print(f"[Total] Collected {len(results)} daily records\n")
    return results


def fetch_history_monthly(plant_info, start_month, end_month):
    """
    Sun-WMS 발전소의 월별 과거 데이터 수집
    
    실제 엔드포인트: /public/statics/statics.php
    파라미터: tab01=0&tab02=3&tab03=2&tord=3&s_day=YYYY-MM&e_day=YYYY-MM
    """
    from datetime import datetime
    from dateutil.relativedelta import relativedelta
    
    results = []
    plant_id = plant_info.get('id', 'sunwms-06')
    auth = plant_info.get('auth', {})
    system = plant_info.get('system', {})
    plant_name = plant_info.get('name', '6호기')
    
    payload_id = auth.get('payload_id', '')
    payload_pw = auth.get('payload_pw', '')
    login_url = system.get('login_url', '')
    
    # base_url 추출
    base_url = system.get('base_url', '')
    if not base_url and 'http' in login_url:
        base_url = login_url.split('/public')[0]
    
    statics_url = system.get('statics_url', f"{base_url}/public/statics/statics.php")
    
    session = create_session()
    
    print(f"\n{'='*60}")
    print(f"[Sun-WMS Monthly] {plant_name} ({start_month} ~ {end_month})")
    print(f"{'='*60}")
    
    headers = {
        'User-Agent': 'Mozilla/5.0',
        'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
    }
    
    login_data = {'act': 'loginChk', 'user_id': payload_id, 'user_pass': payload_pw}
    
    try:
        res = session.post(login_url, data=login_data, headers=headers)
        if res.status_code == 200:
            print("  ✓ Login successful")
        else:
            print("  ✗ Login failed")
            return results
    except Exception as e:
        print(f"  ✗ Login error: {e}")
        return results
    
    # 실제 확인된 월별 엔드포인트
    params = {
        'tab01': '0',
        'tab02': '3',
        'tab03': '2',
        'tord': '3',
        's_day': start_month,
        'e_day': end_month
    }
    
    try:
        res = session.get(statics_url, params=params, headers=headers, timeout=10)
        res.encoding = 'euc-kr'
        
        if res.status_code == 200:
            data = res.json()
            # 월별 데이터 파싱
            monthly_data = data.get('data', []) or data.get('list', [])
            
            if isinstance(monthly_data, list) and len(monthly_data) > 0:
                for item in monthly_data:
                    month_str = item.get('month', item.get('date', ''))
                    generation_kwh = safe_float(item.get('generation', item.get('kwh', item.get('monthTotal', 0))))
                    
                    results.append({
                        'plant_id': plant_id,
                        'month': month_str[:7] if len(month_str) >= 7 else month_str,
                        'generation_kwh': generation_kwh
                    })
                    print(f"  ✓ {month_str[:7]}: {generation_kwh:.1f}kWh")
    except Exception as e:
        print(f"  ✗ Error: {e}")
    
    print(f"[Total] Collected {len(results)} monthly records\n")
    return results