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

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

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"})


# ── 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
    ])