import sys
import requests
import json
import os
import time
import mysql.connector
import logging
from datetime import datetime, timedelta, timezone
from zoneinfo import ZoneInfo

TZ = ZoneInfo('America/Fortaleza')
FULL_SYNC_START = '2024-01-01T00:00:00Z'
POLL_INTERVAL = 300
PAGE_SIZE = 50
STATUSES = [1, 2, 3, 4]

def get_base_dirs():
    exe_dir = os.path.dirname(os.path.abspath(__file__))
    base_dir = os.path.dirname(exe_dir)
    data_dir = os.path.join(base_dir, 'data')
    log_root = os.path.join(base_dir, 'logs')
    return base_dir, data_dir, log_root

BASE_DIR, DATA_DIR, LOG_ROOT = get_base_dirs()
LOG_DIRS = {
    'errors': os.path.join(LOG_ROOT, 'errors'),
    'updates': os.path.join(LOG_ROOT, 'updates'),
    'inserts': os.path.join(LOG_ROOT, 'inserts'),
    'operations': os.path.join(LOG_ROOT, 'operations'),
    'api': os.path.join(LOG_ROOT, 'api'),
}
FLAG_FILE = os.path.join(DATA_DIR, 'flag_fullsync.ok')

os.makedirs(DATA_DIR, exist_ok=True)
for path in LOG_DIRS.values():
    os.makedirs(path, exist_ok=True)

def setup_logger(name, path, level=logging.INFO):
    logger = logging.getLogger(name)
    if logger.hasHandlers():
        return logger
    logger.setLevel(level)
    fmt = logging.Formatter('%(asctime)s [%(levelname)s] %(message)s', '%Y-%m-%d %H:%M:%S')
    fh = logging.FileHandler(path, encoding='utf-8')
    fh.setFormatter(fmt)
    logger.addHandler(fh)
    ch = logging.StreamHandler()
    ch.setFormatter(fmt)
    logger.addHandler(ch)
    return logger

log_ops = setup_logger('operations', os.path.join(LOG_DIRS['operations'], 'operations.log'))
log_err = setup_logger('errors', os.path.join(LOG_DIRS['errors'], 'errors.log'), level=logging.ERROR)
log_upd = setup_logger('updates', os.path.join(LOG_DIRS['updates'], 'updates.log'))
log_ins = setup_logger('inserts', os.path.join(LOG_DIRS['inserts'], 'inserts.log'))
log_api = setup_logger('api', os.path.join(LOG_DIRS['api'], 'api.log'))

def get_db_connection():
    return mysql.connector.connect(
        host=os.getenv('DB_HOST', 'localhost'),
        user=os.getenv('DB_USER', 'root'),
        password=os.getenv('DB_PASS', ''),
        database=os.getenv('DB_NAME', 'bihits')
    )

def parse_iso(dt_str):
    if not dt_str:
        return None
    if dt_str.endswith('Z'):
        dt = datetime.fromisoformat(dt_str[:-1] + '+00:00')
    else:
        dt = datetime.fromisoformat(dt_str)
    return dt.astimezone(timezone.utc)

def get_existing_reservations_map():
    conn = get_db_connection()
    cur = conn.cursor()
    cur.execute("SELECT idReservation, idEntity, dateUp FROM reservations")
    m = { (rid, eid): du for rid, eid, du in cur }
    cur.close(); conn.close()
    return m

def get_existing_details_map():
    conn = get_db_connection()
    cur = conn.cursor()
    cur.execute("SELECT idReservation, idEntityCompany, dateUp FROM reservation_details")
    m = { (rid, eidc): du for rid, eidc, du in cur }
    cur.close(); conn.close()
    return m

def load_cache(path):
    if not os.path.isfile(path):
        return {}
    with open(path, 'r', encoding='utf-8') as f:
        data = json.load(f)
    return data

def save_cache(path, data_dict):
    with open(path, 'w', encoding='utf-8') as f:
        json.dump(list(data_dict.values()), f, ensure_ascii=False, indent=2)

def truncate_tables():
    conn = get_db_connection()
    cur = conn.cursor()
    cur.execute("SET FOREIGN_KEY_CHECKS=0;")
    cur.execute("TRUNCATE TABLE reservation_details;")
    cur.execute("TRUNCATE TABLE reservations;")
    cur.execute("SET FOREIGN_KEY_CHECKS=1;")
    conn.commit()
    cur.close(); conn.close()
    log_ops.info("Tabelas truncadas para full-sync inicial.")

def safe_get(url, headers, params=None, timeout=30):
    delay = 5
    for attempt in range(6):
        try:
            r = requests.get(url, headers=headers, params=params, timeout=timeout)
            log_api.info(f"GET {r.url} → {r.status_code}")
            if r.status_code == 401:
                raise requests.HTTPError('401 Unauthorized')
            if r.status_code == 429:
                log_api.warning(f"429 rate limit, retry em {delay}s")
                time.sleep(delay); delay *= 2; continue
            r.raise_for_status()
            return r
        except requests.HTTPError as he:
            log_err.error(f"HTTPError: {he}")
            if '401' in str(he):
                return None
            time.sleep(delay); delay *= 2
        except Exception as e:
            log_err.error(f"Request error: {e}")
            time.sleep(delay); delay *= 2
    return None

def get_token():
    url = "https://bric-investment.com/BI-HITS/dados/Hits/token/token.php"
    payload = {"username": os.getenv('API_USER'), "password": os.getenv('API_PASS')}
    try:
        r = requests.post(url, data=payload, timeout=30)
        r.raise_for_status()
        text = r.text.strip()
        if text.startswith('Token obtido:'):
            token = text.split(':',1)[1].strip()
        else:
            token = r.json().get('token')
        log_ops.info("Token obtido com sucesso.")
        return token
    except Exception as e:
        log_err.error(f"Erro ao obter token: {e}")
        return None

def fetch_reservations(token, start_date, end_date, type_filter, status):
    url = "https://api.hitspms.net/Datashare/WebCheckinOut/Reservations"
    headers = {
        "Accept": "application/json",
        "X-API-VERSION": "1",
        "X-API-TENANT-NAME": "thecoralbeachresort",
        "X-API-PROPERTY-CODE": "1",
        "X-API-PARTNER-USERID": "0",
        "X-API-LANGUAGE-CODE": "pt-br",
        "X-Client-Id": "THECORALBR",
        "Authorization": f"Bearer {token}"
    }
    page = 0
    results = []
    while True:
        params = {
            "Type": type_filter,
            "Status": status,
            "InitialDate": start_date,
            "FinalDate": end_date,
            "Page": page,
            "Size": PAGE_SIZE
        }
        resp = safe_get(url, headers, params)
        if resp is None:
            return []
        data = resp.json()
        if not data:
            break
        results.extend(data)
        if len(data) < PAGE_SIZE:
            break
        page += 1
        time.sleep(0.5)
    return results

def fetch_reservation_by_id(token, reservation_id):
    url = f"https://api.hitspms.net/Datashare/WebCheckinOut/Reservation/{reservation_id}"
    headers = {
        "Accept": "application/json",
        "X-API-VERSION": "1",
        "X-API-TENANT-NAME": "thecoralbeachresort",
        "X-API-PROPERTY-CODE": "1",
        "X-API-PARTNER-USERID": "0",
        "X-API-LANGUAGE-CODE": "pt-br",
        "X-Client-Id": "THECORALBR",
        "Authorization": f"Bearer {token}"
    }
    resp = safe_get(url, headers)
    if resp and resp.status_code == 200:
        return resp.json()
    return None

def upsert_reservations(res_list):
    existing = get_existing_reservations_map()
    sql = """
    INSERT INTO reservations
      (idReservation,idEntity,name,phone,main,mail,
       zipCode,addressDetails,address,neighborhood,number,city,
       country,stateName,stateCode,federalRegistrationNumber,
       documentType,checkIn,checkOut,dateAdd,dateUp,status,integrator,channel,raw_json)
    VALUES
      (%(idReservation)s,%(idEntity)s,%(name)s,%(phone)s,%(main)s,%(mail)s,
       %(zipCode)s,%(addressDetails)s,%(address)s,%(neighborhood)s,%(number)s,%(city)s,
       %(country)s,%(stateName)s,%(stateCode)s,%(federalRegistrationNumber)s,
       %(documentType)s,%(checkIn)s,%(checkOut)s,%(dateAdd)s,%(dateUp)s,
       %(status)s,%(integrator)s,%(channel)s,%(raw_json)s)
    ON DUPLICATE KEY UPDATE
      name=VALUES(name),phone=VALUES(phone),main=VALUES(main),mail=VALUES(mail),
      zipCode=VALUES(zipCode),addressDetails=VALUES(addressDetails),address=VALUES(address),
      neighborhood=VALUES(neighborhood),number=VALUES(number),city=VALUES(city),
      country=VALUES(country),stateName=VALUES(stateName),stateCode=VALUES(stateCode),
      federalRegistrationNumber=VALUES(federalRegistrationNumber),
      documentType=VALUES(documentType),checkIn=VALUES(checkIn),checkOut=VALUES(checkOut),
      dateUp=VALUES(dateUp),status=VALUES(status),integrator=VALUES(integrator),
      channel=VALUES(channel),raw_json=VALUES(raw_json)
    """
    conn = get_db_connection()
    cur = conn.cursor()
    for r in res_list:
        key = (r['idReservation'], r['idEntity'])
        dt_api = parse_iso(r['dateUp'])
        if key not in existing or dt_api > existing[key]:
            params = {**r, 'raw_json': json.dumps(r, ensure_ascii=False)}
            cur.execute(sql, params)
            if key not in existing:
                log_ins.info(f"[INSERT] reservations {key}")
            else:
                log_upd.info(f"[UPDATE] reservations {key}")
    conn.commit()
    cur.close()
    conn.close()

def upsert_reservation_details(details_list):
    existing = get_existing_details_map()
    sql = """
    INSERT INTO reservation_details
      (idReservation,idEntityCompany,companyName,idRequesterCompany,
       requesterCompanyName,groupName,contactName,contact1,contact2,
       dateAdd,dateUp,creditState,notes,rooms,guests,commissions,
       revenueManagement,raw_json)
    VALUES
      (%(idReservation)s,%(idEntityCompany)s,%(companyName)s,%(idRequesterCompany)s,
       %(requesterCompanyName)s,%(groupName)s,%(contactName)s,%(contact1)s,%(contact2)s,
       %(dateAdd)s,%(dateUp)s,%(creditState)s,%(notes)s,%(rooms)s,%(guests)s,
       %(commissions)s,%(revenueManagement)s,%(raw_json)s)
    ON DUPLICATE KEY UPDATE
      idEntityCompany=VALUES(idEntityCompany),companyName=VALUES(companyName),
      idRequesterCompany=VALUES(idRequesterCompany),
      requesterCompanyName=VALUES(requesterCompanyName),groupName=VALUES(groupName),
      contactName=VALUES(contactName),contact1=VALUES(contact1),contact2=VALUES(contact2),
      dateUp=VALUES(dateUp),creditState=VALUES(creditState),notes=VALUES(notes),
      rooms=VALUES(rooms),guests=VALUES(guests),commissions=VALUES(commissions),
      revenueManagement=VALUES(revenueManagement),raw_json=VALUES(raw_json)
    """
    conn = get_db_connection()
    cur = conn.cursor()
    for d in details_list:
        key = (d['idReservation'], d['idEntityCompany'])
        dt_api = parse_iso(d['dateUp'])
        if key not in existing or dt_api > existing[key]:
            payload = {
                **d,
                'notes': json.dumps(d.get('notes', []), ensure_ascii=False),
                'rooms': json.dumps(d.get('rooms', []), ensure_ascii=False),
                'guests': json.dumps(d.get('guests', []), ensure_ascii=False),
                'commissions': json.dumps(d.get('commissions', []), ensure_ascii=False),
                'revenueManagement': json.dumps(d.get('revenueManagement', {}), ensure_ascii=False),
                'raw_json': json.dumps(d, ensure_ascii=False)
            }
            cur.execute(sql, payload)
            if key not in existing:
                log_ins.info(f"[INSERT] reservation_details {key}")
            else:
                log_upd.info(f"[UPDATE] reservation_details {key}")
    conn.commit()
    cur.close()
    conn.close()

def main():
    path_res = os.path.join(DATA_DIR, 'reservations.json')
    path_det = os.path.join(DATA_DIR, 'reservation_details.json')

    initial_run = not os.path.isfile(FLAG_FILE)
    if initial_run:
        log_ops.info("Primeira execução: iniciando full-sync inicial.")
        truncate_tables()
        open(FLAG_FILE, 'w').close()
        old_res_data = {}
        old_det_data = {}
    else:
        old_res_data = { (r['idReservation'], r['idEntity']): r for r in load_cache(path_res) }
        old_det_data = { (d['idReservation'], d['idEntityCompany']): d for d in load_cache(path_det) }

    if old_res_data:
        last_dateUp = max(parse_iso(r['dateUp']) for r in old_res_data.values())
    else:
        last_dateUp = datetime.fromisoformat(FULL_SYNC_START.replace('Z', '+00:00'))

    while True:
        now_utc = datetime.now(timezone.utc)
        type_filters = [2]
        start_dt = last_dateUp - timedelta(minutes=5)
        start_date = start_dt.strftime('%Y-%m-%dT%H:%M:%SZ')
        end_date = now_utc.strftime('%Y-%m-%dT%H:%M:%SZ')
        log_ops.info(f"Sync window: {start_date} → {end_date}")

        token = get_token()
        if not token:
            log_err.error("Falha ao obter token, pulando ciclo.")
            time.sleep(POLL_INTERVAL)
            continue

        all_api_map_data = {}
        all_api_map_time = {}
        calls = [(t, s) for t in type_filters for s in STATUSES]
        for i, (type_f, status) in enumerate(calls):
            recs = fetch_reservations(token, start_date, end_date, type_f, status)
            if recs is None:
                token = get_token() or token
                continue
            for r in recs:
                key = (r['idReservation'], r['idEntity'])
                dt_api = parse_iso(r['dateUp'])
                if key not in all_api_map_time or dt_api > all_api_map_time[key]:
                    all_api_map_time[key] = dt_api
                    all_api_map_data[key] = r
            if i < len(calls) - 1:
                time.sleep(POLL_INTERVAL)

        to_delete = set(old_res_data.keys()) - set(all_api_map_data.keys())
        if to_delete:
            conn = get_db_connection(); cur = conn.cursor()
            for rid, eid in to_delete:
                cur.execute("DELETE FROM reservation_details WHERE idReservation=%s AND idEntityCompany=%s", (rid, eid))
                cur.execute("DELETE FROM reservations WHERE idReservation=%s AND idEntity=%s", (rid, eid))
                old_res_data.pop((rid, eid), None)
                old_det_data.pop((rid, eid), None)
                log_ops.info(f"[DELETE] reservation {rid},{eid}")
            conn.commit(); cur.close(); conn.close()

        to_fetch = [key for key, dt in all_api_map_time.items()
                    if key not in old_res_data or dt > parse_iso(old_res_data[key]['dateUp'])]

        new_details = []
        for num, key in enumerate(to_fetch, 1):
            rid, eid = key
            log_ops.info(f"[{num}/{len(to_fetch)}] Fetch detail {key}")
            det = fetch_reservation_by_id(token, rid)
            if det is None:
                token = get_token() or token
                det = fetch_reservation_by_id(token, rid)
            if det:
                dkey = (det['idReservation'], det['idEntityCompany'])
                old_det_data[dkey] = det
                new_details.append(det)
                old_res_data[key] = all_api_map_data[key]
            time.sleep(2.2)


        upsert_reservations(list(all_api_map_data.values()))
        upsert_reservation_details(new_details)

        if all_api_map_time:
            last_dateUp = max(all_api_map_time.values())

        save_cache(path_res, old_res_data)
        save_cache(path_det, old_det_data)

        log_ops.info("Ciclo completo, aguardando próximo...")
        time.sleep(POLL_INTERVAL)

if __name__ == '__main__':
    main()
