#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
VZP – zjištění od kdy platí AKTUÁLNÍ STAV pojištění (stav)
---------------------------------------------------------
- vstup: rodné číslo
- porovnává pouze položku: res["stav"]
- hledá změnu: roky → měsíce → týdny → dny
- 1 request / sekunda (tvrdý limit)
- ukládá vše do MySQL (audit)
"""

import sys
import time
import logging
from pathlib import Path
from datetime import date, timedelta

import pymysql

# ==========================================
# PROJECT ROOT
# ==========================================
PROJECT_ROOT = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(PROJECT_ROOT))

from knihovny.vzpb2b_client import VZPB2BClient

# ==========================================
# LOGGING
# ==========================================
logging.basicConfig(
    filename="insurance_status_history.log",
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(message)s",
    encoding="utf-8"
)

console = logging.getLogger("console")
console.setLevel(logging.INFO)
handler = logging.StreamHandler()
handler.setFormatter(logging.Formatter("%(message)s"))
console.addHandler(handler)

def log(msg):
    logging.info(msg)
    console.info(msg)

def log_err(msg):
    logging.error(msg)
    console.error(msg)

# ==========================================
# MYSQL
# ==========================================
mysql = pymysql.connect(
    host="192.168.1.76",
    port=3307,
    user="root",
    password="Vlado9674+",
    database="medevio",
    charset="utf8mb4",
    autocommit=True
)

def save_result(rc, prijmeni, jmeno, k_datu, res, xml):
    sql = """
    INSERT INTO vzp_stav_pojisteni
        (rc, prijmeni, jmeno, k_datu,
         stav, kod_pojistovny, nazev_pojistovny,
         pojisteni_kod, stav_vyrizeni, response_xml)
    VALUES (%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)
    """
    with mysql.cursor() as cur:
        cur.execute(sql, (
            rc,
            prijmeni,
            jmeno,
            k_datu,
            res["stav"],
            res["kodPojistovny"],
            res["nazevPojistovny"],
            res["pojisteniKod"],
            res["stavVyrizeni"],
            xml
        ))

# ==========================================
# RATE LIMITER – 1 req / sec
# ==========================================
_LAST_CALL = 0.0

def vzp_call(func, *args, **kwargs):
    global _LAST_CALL
    now = time.time()
    delta = now - _LAST_CALL
    if delta < 1.1:
        time.sleep(1.1 - delta)
    result = func(*args, **kwargs)
    _LAST_CALL = time.time()
    return result

# ==========================================
# CONFIG
# ==========================================
PFX_PATH = PROJECT_ROOT / "certificates" / "picka.pfx"
PFX_PASSWORD = "Vlado7309208104+"

ENV = "prod"
ICZ = "00000000"
DIC = "00000000"

if not PFX_PATH.exists():
    raise FileNotFoundError(f"PFX not found: {PFX_PATH}")

# ==========================================
# INIT VZP CLIENT
# ==========================================
vzp = VZPB2BClient(
    ENV,
    str(PFX_PATH),
    PFX_PASSWORD,
    icz=ICZ,
    dic=DIC
)

# ==========================================
# INPUT
# ==========================================
rc = input("Zadej rodné číslo (bez /): ").strip()

# jméno jen informativně (pokud existuje historie)
with mysql.cursor(pymysql.cursors.DictCursor) as cur:
    cur.execute("""
        SELECT prijmeni, jmeno
        FROM vzp_stav_pojisteni
        WHERE rc = %s
        ORDER BY k_datu DESC
        LIMIT 1
    """, (rc,))
    row = cur.fetchone()

prijmeni = row["prijmeni"] if row else "?"
jmeno = row["jmeno"] if row else "?"

today = date.today()
log(f"▶ Kontrola STAVU pojištění: {prijmeni} {jmeno} ({rc})")

# ==========================================
# CHECK FUNCTION (STAV)
# ==========================================
def check_at(d: date):
    xml = vzp_call(
        vzp.stav_pojisteni,
        rc=rc,
        k_datu=d.isoformat()
    )
    res = vzp.parse_stav_pojisteni(xml)

    stav = res["stav"]
    log(f"   test {d.isoformat()} → stav={stav}")

    save_result(rc, prijmeni, jmeno, d, res, xml)
    return stav

# ==========================================
# CURRENT STAV
# ==========================================
today_stav = check_at(today)
log(f"✔ Aktuální stav: {today_stav}")

# ==========================================
# 1️⃣ BACKWARD – YEARS
# ==========================================
probe = today
last_same = today

while True:
    probe -= timedelta(days=365)
    if probe.year < today.year - 20:
        break

    if check_at(probe) != today_stav:
        break

    last_same = probe

# ==========================================
# 2️⃣ FORWARD – MONTHS
# ==========================================
probe = probe
while True:
    probe += timedelta(days=30)
    if probe >= last_same:
        break

    if check_at(probe) == today_stav:
        upper = probe
        lower = probe - timedelta(days=30)
        break

# ==========================================
# 3️⃣ FORWARD – WEEKS
# ==========================================
probe = lower
while True:
    probe += timedelta(days=7)
    if probe >= upper:
        break

    if check_at(probe) == today_stav:
        upper = probe
        lower = probe - timedelta(days=7)
        break

# ==========================================
# 4️⃣ FORWARD – DAYS
# ==========================================
probe = lower
while True:
    probe += timedelta(days=1)
    if check_at(probe) == today_stav:
        change_date = probe
        break

# ==========================================
# RESULT
# ==========================================
log("\n✅ VÝSLEDEK")
log(f"Stav '{today_stav}' platí od: {change_date.isoformat()}")

mysql.close()
log("\nDONE.")