import {matchHotKey} from "../../util/hotKey";
import {deleteRow, selectRow} from "./row";
import {cellScrollIntoView, popTextCell, updateCellsValue} from "./cell";
import {avContextmenu} from "./action";
import {hasClosestByClassName} from "../../util/hasClosest";
import {Constants} from "../../../constants";

export const avKeydown = (event: KeyboardEvent, nodeElement: HTMLElement, protyle: IProtyle) => {
    if (!nodeElement.classList.contains("av") || !window.siyuan.menus.menu.element.classList.contains("fn__none")) {
        return false;
    }
    if (event.isComposing) {
        return true;
    }
    // 避免浏览器默认快捷键
    if (matchHotKey("⌘B", event) || matchHotKey("⌘I", event) || matchHotKey("⌘U", event)) {
        event.preventDefault();
        return true;
    }
    const selectCellElement = nodeElement.querySelector(".av__cell--select") as HTMLElement;
    if (selectCellElement) {
        const rowElement = hasClosestByClassName(selectCellElement, "av__row");
        if (!rowElement) {
            return false;
        }
        if (event.key === "Backspace" || event.key === "Delete") {
            updateCellsValue(protyle, nodeElement, undefined, Array.from(nodeElement.querySelectorAll(".av__cell--active, .av__cell--select")));
            event.preventDefault();
            return true;
        }
        // 复制、粘贴
        if (!event.ctrlKey && !event.metaKey) {
            nodeElement.querySelectorAll(".av__cell--active").forEach(item => {
                item.classList.remove("av__cell--active");
                item.querySelector(".av__drag-fill")?.remove();
            });
        }
        if (event.key === "Escape") {
            selectCellElement.classList.remove("av__cell--select");
            selectRow(rowElement.querySelector(".av__firstcol"), "select");
            event.preventDefault();
            return true;
        }
        if (event.key === "Enter") {
            popTextCell(protyle, [selectCellElement]);
            event.preventDefault();
            return true;
        }
        let newCellElement;
        if (event.key === "ArrowLeft" || matchHotKey("⇧⇥", event)) {
            const previousRowElement = rowElement.previousElementSibling;
            if (selectCellElement.previousElementSibling && !selectCellElement.previousElementSibling.classList.contains("av__firstcol")) {
                if (selectCellElement.previousElementSibling.classList.contains("av__cell")) {
                    newCellElement = selectCellElement.previousElementSibling;
                } else {
                    newCellElement = selectCellElement.previousElementSibling.lastElementChild;
                }
            } else if (previousRowElement && !previousRowElement.classList.contains("av__row--header")) {
                const previousCellElements = previousRowElement.querySelectorAll(".av__cell");
                newCellElement = previousCellElements[previousCellElements.length - 1];
            }
            if (newCellElement) {
                selectCellElement.classList.remove("av__cell--select");
                newCellElement.classList.add("av__cell--select");
                cellScrollIntoView(nodeElement, newCellElement, false);
            }
            event.preventDefault();
            return true;
        }
        if (event.key === "ArrowRight" || matchHotKey("⇥", event)) {
            const nextRowElement = rowElement.nextElementSibling;
            if (selectCellElement.nextElementSibling && selectCellElement.nextElementSibling.classList.contains("av__cell")) {
                newCellElement = selectCellElement.nextElementSibling;
            } else if (!selectCellElement.nextElementSibling && selectCellElement.parentElement.nextElementSibling) {
                newCellElement = selectCellElement.parentElement.nextElementSibling;
            } else if (nextRowElement && !nextRowElement.classList.contains("av__row--footer")) {
                newCellElement = nextRowElement.querySelector(".av__cell");
            }
            if (newCellElement) {
                selectCellElement.classList.remove("av__cell--select");
                newCellElement.classList.add("av__cell--select");
                cellScrollIntoView(nodeElement, newCellElement, false);
            }
            event.preventDefault();
            return true;
        }
        if (event.key === "ArrowUp") {
            const previousRowElement = rowElement.previousElementSibling;
            if (previousRowElement && !previousRowElement.classList.contains("av__row--header")) {
                newCellElement = previousRowElement.querySelector(`.av__cell[data-col-id="${selectCellElement.dataset.colId}"]`);
            }
            if (newCellElement) {
                selectCellElement.classList.remove("av__cell--select");
                newCellElement.classList.add("av__cell--select");
                cellScrollIntoView(nodeElement, newCellElement);
            }
            event.preventDefault();
            return true;
        }
        if (event.key === "ArrowDown") {
            const nextRowElement = rowElement.nextElementSibling;
            if (nextRowElement && !nextRowElement.classList.contains("av__row--footer")) {
                newCellElement = nextRowElement.querySelector(`.av__cell[data-col-id="${selectCellElement.dataset.colId}"]`);
            }
            if (newCellElement) {
                selectCellElement.classList.remove("av__cell--select");
                newCellElement.classList.add("av__cell--select");
                cellScrollIntoView(nodeElement, newCellElement);
            }
            event.preventDefault();
            return true;
        }

        if (!Constants.KEYCODELIST[event.keyCode] ||
            (Constants.KEYCODELIST[event.keyCode].length === 1 &&
                !event.metaKey && !event.ctrlKey &&
                !["⇧", "⌃", "⌥", "⌘"].includes(Constants.KEYCODELIST[event.keyCode]))) {
            if (!selectCellElement.style.backgroundColor) {
                popTextCell(protyle, [selectCellElement]);
            } else {
                event.preventDefault();
            }
            return true;
        }
    }
    const selectRowElements = nodeElement.querySelectorAll(".av__row--select:not(.av__row--header)");
    if (selectRowElements.length > 0) {
        if (matchHotKey("⌘/", event)) {
            event.stopPropagation();
            event.preventDefault();
            avContextmenu(protyle, selectRowElements[0] as HTMLElement, {
                x: nodeElement.querySelector(".layout-tab-bar").getBoundingClientRect().left,
                y: selectRowElements[0].getBoundingClientRect().bottom
            });
            return true;
        }
        if (event.key === "Escape") {
            event.preventDefault();
            selectRow(selectRowElements[0].querySelector(".av__firstcol"), "unselectAll");
            return true;
        }
        if (event.key === "Backspace") {
            event.preventDefault();
            deleteRow(nodeElement, protyle);
            return true;
        }
        if (event.key === "Enter") {
            selectRow(selectRowElements[0].querySelector(".av__firstcol"), "unselectAll");
            popTextCell(protyle, [selectRowElements[0].querySelector(".av__cell")]);
            event.preventDefault();
            return true;
        }
        // TODO event.shiftKey
        if (event.key === "ArrowUp") {
            const previousRowElement = selectRowElements[0].previousElementSibling;
            selectRow(selectRowElements[0].querySelector(".av__firstcol"), "unselectAll");
            if (previousRowElement && !previousRowElement.classList.contains("av__row--header")) {
                selectRow(previousRowElement.querySelector(".av__firstcol"), "select");
                cellScrollIntoView(nodeElement, previousRowElement);
            } else {
                nodeElement.classList.add("protyle-wysiwyg--select");
            }
            event.preventDefault();
            return true;
        }
        if (event.key === "ArrowDown") {
            const nextRowElement = selectRowElements[selectRowElements.length - 1].nextElementSibling;
            selectRow(selectRowElements[0].querySelector(".av__firstcol"), "unselectAll");
            if (nextRowElement && !nextRowElement.classList.contains("av__row--util")) {
                selectRow(nextRowElement.querySelector(".av__firstcol"), "select");
                cellScrollIntoView(nodeElement, nextRowElement);
            } else {
                nodeElement.classList.add("protyle-wysiwyg--select");
            }
            event.preventDefault();
            return true;
        }
    }
    return false;
};