/**
 * ItemHold plugin
 *
 * @copyright Rafal Pospiech <https://neuronet.io>
 * @author    Rafal Pospiech <neuronet.io@gmail.com>
 * @package   gantt-schedule-timeline-calendar
 * @license   AGPL-3.0 (https://github.com/neuronetio/gantt-schedule-timeline-calendar/blob/master/LICENSE)
 * @link      https://github.com/neuronetio/gantt-schedule-timeline-calendar
 */
function ItemHold(options = {}) {
    let api;
    const defaultOptions = {
        time: 1000,
        movementThreshold: 2,
        action(element, data) { }
    };
    options = Object.assign(Object.assign({}, defaultOptions), options);
    const holding = {};
    const pointer = { x: 0, y: 0 };
    function onPointerDown(item, element, event) {
        if (typeof holding[item.id] === 'undefined') {
            const normalized = api.normalizePointerEvent(event);
            holding[item.id] = { x: normalized.x, y: normalized.y };
            event.stopPropagation();
            event.preventDefault();
            setTimeout(() => {
                if (typeof holding[item.id] !== 'undefined') {
                    let exec = true;
                    const xMovement = Math.abs(holding[item.id].x - pointer.x);
                    const yMovement = Math.abs(holding[item.id].y - pointer.y);
                    if (xMovement > options.movementThreshold) {
                        exec = false;
                    }
                    if (yMovement > options.movementThreshold) {
                        exec = false;
                    }
                    delete holding[item.id];
                    if (exec) {
                        options.action(element, item);
                    }
                }
            }, options.time);
        }
    }
    function onPointerUp(itemId) {
        if (typeof holding[itemId] !== 'undefined') {
            delete holding[itemId];
        }
    }
    function action(element, data) {
        function elementPointerDown(event) {
            onPointerDown(data.item, element, event);
        }
        element.addEventListener('mousedown', elementPointerDown);
        element.addEventListener('touchstart', elementPointerDown);
        function pointerUp() {
            onPointerUp(data.item.id);
        }
        document.addEventListener('mouseup', pointerUp);
        document.addEventListener('touchend', pointerUp);
        function onPointerMove(event) {
            const normalized = api.normalizePointerEvent(event);
            pointer.x = normalized.x;
            pointer.y = normalized.y;
        }
        document.addEventListener('mousemove', onPointerMove);
        document.addEventListener('touchmove', onPointerMove);
        return {
            update(element, changedData) {
                data = changedData;
            },
            destroy(element, data) {
                document.removeEventListener('mouseup', onPointerUp);
                document.removeEventListener('mousemove', onPointerMove);
                element.removeEventListener('mousedown', elementPointerDown);
                document.removeEventListener('touchend', onPointerUp);
                document.removeEventListener('touchmove', onPointerMove);
                element.removeEventListener('touchstart', elementPointerDown);
            }
        };
    }
    return function initialize(vido) {
        api = vido.api;
        vido.state.update('config.actions.chart-timeline-items-row-item', actions => {
            actions.push(action);
            return actions;
        });
    };
}

export default ItemHold;