# CI/CD Workshop
# Copyright (C) 2025 OpenBokeron
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

import json
import random
from datetime import datetime
from pathlib import Path
from typing import Dict, List

DATA_DIR = Path(__file__).resolve().parent.parent / "data"
ITEMS_PER_SECTION = 3


def _load_json(filename: str) -> Dict:
    path = DATA_DIR / filename
    with open(path, encoding="utf-8") as file:
        return json.load(file)


MENU_SOURCE = _load_json("menu_items.json")


def _pick_items(options: List[str], count: int) -> List[str]:
    if count >= len(options):
        return list(options)
    return random.sample(options, count)


def _pick_mains(count: int = ITEMS_PER_SECTION) -> List[str]:
    fish_options = MENU_SOURCE["mains"]["fish"]
    other_options = MENU_SOURCE["mains"]["others"]

    fish_choice = random.choice(fish_options)
    remaining_needed = max(count - 1, 0)

    pool = [item for item in fish_options if item != fish_choice] + other_options
    if remaining_needed > len(pool):
        remaining_needed = len(pool)

    mains = [fish_choice] + _pick_items(pool, remaining_needed)
    random.shuffle(mains)
    return mains

def _pick_garnish() -> List[str]:
    garnish_options = MENU_SOURCE["mains"]["garnish"]

    return _pick_items(garnish_options, 2)


def _build_alternative() -> Dict:
    alternative = MENU_SOURCE.get("alternatives", {})
    return {
        "title": alternative.get("title", "Alternativa"),
        "items": alternative.get("items", []),
        "price": alternative.get("price"),
        "note": alternative.get("note", ""),
    }

def build_menu(items_per_section: int = ITEMS_PER_SECTION) -> Dict:
    today = datetime.now()

    return {
        "day": today.strftime("%A").capitalize(),
        "starters": _pick_items(MENU_SOURCE["starters"], items_per_section),
        "mains": _pick_mains(items_per_section),
        "garnish": _pick_garnish(),
        "desserts": _pick_items(MENU_SOURCE["desserts"], items_per_section),
        "notes": _pick_items(MENU_SOURCE["notes"], 3),
        "menu_price": MENU_SOURCE["university_deal"]["current_price"],
        "university_deal": MENU_SOURCE["university_deal"],
        "espetos_tip": random.choice(MENU_SOURCE["espetos_tips"]),
        "alternative": _build_alternative(),
        "availability": {
            "last_updated": today.isoformat(timespec="seconds"),
        },
    }