"""Skladište za app 'Namaz': izbor lokacije + bundlana lista lokacija.

Bez openai/requests (uvozi ga i admin). Lista lokacija je bundlana (lokacije.json);
id lokacije = indeks u toj listi (kako radi api.vaktija.ba).
"""
import json
import os
import tempfile
import threading
from pathlib import Path

VAKTIJA_CONFIG_PATH = Path(os.environ.get(
    "IDRIZ_VAKTIJA_CONFIG_PATH", str(Path.home() / ".config/idriz/vaktija.json")))

DEFAULT_ID = 77  # Sarajevo
_LOCATIONS_FILE = Path(__file__).with_name("lokacije.json")
_lock = threading.Lock()

try:
    _LOCATIONS: list[str] = json.loads(_LOCATIONS_FILE.read_text(encoding="utf-8"))
except (OSError, json.JSONDecodeError):
    _LOCATIONS = ["Sarajevo"]


def locations() -> list[dict]:
    """Sve lokacije kao [{'id': i, 'naziv': ...}], abecedno po nazivu."""
    return sorted(({"id": i, "naziv": n} for i, n in enumerate(_LOCATIONS)),
                  key=lambda x: x["naziv"].lower())


def valid_id(loc_id: int) -> bool:
    return isinstance(loc_id, int) and 0 <= loc_id < len(_LOCATIONS)


def location_name(loc_id: int) -> str:
    return _LOCATIONS[loc_id] if valid_id(loc_id) else "Sarajevo"


def get_location_id() -> int:
    try:
        data = json.loads(VAKTIJA_CONFIG_PATH.read_text(encoding="utf-8"))
        loc = int(data.get("lokacija_id", DEFAULT_ID))
    except (OSError, ValueError, json.JSONDecodeError):
        return DEFAULT_ID
    return loc if valid_id(loc) else DEFAULT_ID


def set_location_id(loc_id: int) -> int:
    if not valid_id(loc_id):
        loc_id = DEFAULT_ID
    with _lock:
        VAKTIJA_CONFIG_PATH.parent.mkdir(parents=True, exist_ok=True)
        fd, tmp = tempfile.mkstemp(dir=str(VAKTIJA_CONFIG_PATH.parent), suffix=".tmp")
        try:
            with os.fdopen(fd, "w", encoding="utf-8") as f:
                json.dump({"lokacija_id": loc_id}, f, ensure_ascii=False, indent=2)
            os.replace(tmp, VAKTIJA_CONFIG_PATH)
        finally:
            if os.path.exists(tmp):
                os.unlink(tmp)
    return loc_id