"""REST API – board webhook receiver and JSON relay control."""
from datetime import datetime
from flask import Blueprint, request, jsonify, abort, current_app
from flask_login import login_required

from app import db, socketio
from app.models.board import Board
from app.services import workflow_engine
from app.services.board_service import poll_board

api_bp = Blueprint("api", __name__)


# ── webhook endpoint (boards POST input events here) ──────────────────────────

@api_bp.route("/webhook/<int:board_id>", methods=["POST"])
def webhook(board_id: int):
    board = db.session.get(Board, board_id)
    if board is None:
        abort(404)

    data = request.get_json(silent=True) or {}
    input_num = data.get("input")
    state = data.get("state")

    if input_num is None or state is None:
        return jsonify({"error": "missing input or state"}), 400

    # Update cached input state
    states = board.input_states
    states[f"input_{input_num}"] = bool(state)
    board.input_states = states
    board.is_online = True
    board.last_seen = datetime.utcnow()
    db.session.commit()

    # Let the workflow engine decide what to do
    workflow_engine.process_input_event(board_id, int(input_num), bool(state))

    # Push live update to all connected clients immediately
    socketio.emit("board_update", {
        "board_id": board_id,
        "is_online": True,
        "input_states": board.input_states,
        "relay_states": board.relay_states,
    })

    return jsonify({"status": "ok"})


# ── Manual ping / status check ───────────────────────────────────────────────

@api_bp.route("/boards/<int:board_id>/ping", methods=["POST"])
@login_required
def ping_board(board_id: int):
    """Trigger an immediate poll for any board (online or offline).

    Called by the 'Check Status' button in the UI.  The poll result is both
    returned as JSON *and* broadcast via socket.io so all open tabs update.
    """
    db.get_or_404(Board, board_id)  # 404 if unknown
    poll_board(current_app._get_current_object(), board_id)
    board = db.session.get(Board, board_id)
    return jsonify({
        "board_id": board.id,
        "is_online": board.is_online,
        "relay_states": board.relay_states,
        "input_states": board.input_states,
        "last_seen": board.last_seen.isoformat() if board.last_seen else None,
    })


# ── JSON relay status ─────────────────────────────────────────────────────────

@api_bp.route("/boards/<int:board_id>/relays")
def relay_states(board_id: int):
    board = db.get_or_404(Board, board_id)
    return jsonify({
        "board_id": board.id,
        "name": board.name,
        "is_online": board.is_online,
        "relay_states": board.relay_states,
        "input_states": board.input_states,
    })


# ── JSON board list ───────────────────────────────────────────────────────────

@api_bp.route("/boards")
def board_list():
    boards = Board.query.order_by(Board.name).all()
    return jsonify([
        {
            "id": b.id,
            "name": b.name,
            "board_type": b.board_type,
            "host": b.host,
            "port": b.port,
            "is_online": b.is_online,
            "last_seen": b.last_seen.isoformat() if b.last_seen else None,
            "relay_states": b.relay_states,
            "input_states": b.input_states,
        }
        for b in boards
    ])