from telegram import Update, InlineKeyboardButton, InlineKeyboardMarkup
from telegram.ext import ContextTypes
from models import Gates, Users, Role

async def opengate(update: Update, context: ContextTypes.DEFAULT_TYPE, users: Users, gates: Gates):
    assert update.effective_user is not None
    assert update.message is not None

    user_id = str(update.effective_user.id)
    args = context.args
    if not args:
        return await update.message.reply_text("Usage: `/opengate <gate>`")
    gate = args[0]
    gate_name = gates.get_name(gate)
    role = users.get_role(user_id)
    if role in (Role.ADMIN, Role.MEMBER):
        creds = users.get_credentials(user_id)
        if not creds:
            return await update.message.reply_text("Please set your credentials with `/setcredentials` first")
    elif role == Role.GUEST and users.can_open_gate(user_id, gate):
        grantor = users.get_grantor(user_id, gate)
        assert grantor is not None

        creds = users.get_credentials(grantor)
        if not grantor:
            return await update.message.reply_text("No valid grantor available.")
        if not creds:
            return await update.message.reply_text("No valid grantor credentials available.")
        users.update_grant_last_used(user_id, gate)
        try:
            await context.bot.send_message(chat_id=grantor, text=f"Guest {user_id} opened {gate_name}")
        except Exception as e:
            print(f"Failed to notify {grantor} that guest {user_id} opened {gate_name}: {e}")
    else:
        return await update.message.reply_text("Access denied.")

    if gates.open_gate(gate, creds):
        return await update.message.reply_text(f"Gate {gate_name} opened!")
    await update.message.reply_text(f"ERROR: Cannot open gate {gate_name}")

async def open_gate_menu(update: Update, context: ContextTypes.DEFAULT_TYPE, users: Users, gates: Gates):
    assert update.effective_user is not None

    user_id = str(update.effective_user.id)
    granted_gates = users.get_granted_gates(user_id)
    if not granted_gates:
        if update.callback_query:
            await update.callback_query.answer("You have no gates to open.")
        elif update.message:
            return await update.message.reply_text("You have no gates to open.")
    
    if 'all' in granted_gates:
        granted_gates = gates.get_all_gates_id()
    # Show a list of available gates as buttons
    keyboard = []
    for gate_id in granted_gates:
        gate_name = gates.get_name(gate_id)
        assert gate_name is not None
        keyboard.append([InlineKeyboardButton(gate_name, callback_data=f"opengate_{gate_id}")])

    reply_markup = InlineKeyboardMarkup(keyboard)
    if update.callback_query:
        await update.callback_query.answer()
        await update.callback_query.edit_message_text(
            "Select a gate to open:", reply_markup=reply_markup
        )
    elif update.message:
        await update.message.reply_text("Select a gate to open:", reply_markup=reply_markup)

async def handle_gate_open_callback(update: Update, context: ContextTypes.DEFAULT_TYPE, users: Users, gates: Gates):
    assert update.callback_query is not None

    query = update.callback_query
    user_id = str(query.from_user.id)
    data = query.data
    assert data is not None
    if data.startswith("opengate_"):
        gate_id = data[len("opengate_") :]
        gate_name = gates.get_name(gate_id)
        role = users.get_role(user_id)
        if role in (Role.ADMIN, Role.MEMBER):
            creds = users.get_credentials(user_id)
            if not creds:
                await query.answer("Please set your credentials with /setcredentials first", show_alert=True)
                return
        elif role == Role.GUEST and users.can_open_gate(user_id, gate_id):
            grantor = users.get_grantor(user_id, gate_id)
            assert grantor is not None
            creds = users.get_credentials(grantor)
            if not grantor or not creds:
                await query.answer("No valid grantor credentials available.", show_alert=True)
                return
            users.update_grant_last_used(user_id, gate_id)
            try:
                await context.bot.send_message(chat_id=grantor, text=f"Guest {user_id} opened {gate_name}")
            except Exception as e:
                print(f"Failed to notify {grantor} that guest {user_id} opened {gate_name}: {e}")
        else:
            # TODO: guest not working
            await query.answer("Access denied.", show_alert=True)
            return

        if gates.open_gate(gate_id, creds):
            await query.answer(f"Gate {gate_name} opened!", show_alert=True)
            await query.edit_message_text(f"Gate {gate_name} opened!")
        else:
            await query.answer(f"ERROR: Cannot open gate {gate_name}", show_alert=True)
            await query.edit_message_text(f"ERROR: Cannot open gate {gate_name}")