import {
    BODY_CELL,
    BODY_CELL_HANDLE,
    COLUMN_RESIZER,
    HEADER_CELL,
    ROLE,
} from '@/lib/constants/dom-role';
import { getElementByRole } from '@/lib/utils/dom';

import { selecting } from '@/lib/services/mouse-dwon/selection';
import { columnResize } from '@/lib/services/mouse-dwon/column-resize';
import { dragCalculate } from '@/lib/services/mouse-dwon/drag-calculate';
import { Store } from '@/lib/store';
import { Operator } from '@/lib/operator';
import {log} from "@/lib/utils/log";

export const useMouseDown =
    (store: Store, operators: Record<string, any>) => () => (event: PointerEvent) => {
        log('[event]onMouseDown');
        if (event.button !== 0) return;
        // 列宽改动
        if (COLUMN_RESIZER === (event.target as Element).getAttribute(ROLE)) {
            const headerCol = getElementByRole(event.target as Element, HEADER_CELL);
            event.stopPropagation();
            columnResize(store)(headerCol.id, event.clientX);
            return;
        }
        // 单元格拖拽 自动计算
        if (BODY_CELL_HANDLE === (event.target as Element).getAttribute(ROLE)) {
            const cell = getElementByRole(event.target as Element, BODY_CELL);
            const rowId = cell.getAttribute('row-id');
            const columnId = cell.getAttribute('column-id');
            event.stopPropagation();
            dragCalculate(operators[Operator.calculating])(columnId, rowId);
            return;
        }
        // 选择 编辑时 不允许进行计算
        if (getElementByRole(event.target as Element, BODY_CELL)) {
            const cell = getElementByRole(event.target as Element, BODY_CELL);
            const rowId = cell.getAttribute('row-id');
            const columnId = cell.getAttribute('column-id');
            const pin = cell.getAttribute('pin');

            const currentDBCell = operators[Operator.bodyClick].getDbClickedBodyCell();
            if (
                rowId &&
                columnId &&
                !(
                    rowId === currentDBCell?.rowId &&
                    currentDBCell?.columnId === columnId &&
                    pin === currentDBCell?.pin
                )
            ) {
                event.stopPropagation();
                selecting(operators)(rowId, columnId);
            }
            return;
        }
    };