import {getIconByType} from "../../editor/getIcon";
import {removeLoading} from "../ui/initUI";
import {fetchPost} from "../../util/fetch";
import {Constants} from "../../constants";

export const renderBacklink = (protyle: IProtyle, backlinkData: {
    blockPaths: IBreadcrumb[],
    dom: string,
    expand: boolean
}[]) => {
    protyle.block.showAll = true;
    let html = "";
    backlinkData.forEach(item => {
        html += genBreadcrumb(item.blockPaths) + setBacklinkFold(item.dom, item.expand);
    });
    protyle.wysiwyg.element.innerHTML = html;
    removeLoading(protyle);
};

const setBacklinkFold = (html: string, expand: boolean) => {
    const tempDom = document.createElement("template");
    tempDom.innerHTML = html;
    if (tempDom.content.firstElementChild.classList.contains("li")) {
        if (expand) {
            const thirdLiElement = tempDom.content.querySelector(".li .li .li");
            if (thirdLiElement) {
                thirdLiElement.setAttribute("fold", "1");
            }
        } else {
            tempDom.content.firstElementChild.setAttribute("fold", "1");
        }
    } else if (tempDom.content.firstElementChild.getAttribute("data-type") === "NodeHeading") {
        Array.from(tempDom.content.children).forEach((item, index) => {
            if ((expand && index > 2) || (!expand && index > 1)) {
                if ((expand && index === 3) || (!expand && index === 2)) {
                    item.insertAdjacentHTML("beforebegin", "<div style=\"max-width: 100%;justify-content: center;\" contenteditable=\"false\" class=\"protyle-breadcrumb__item\"><svg><use xlink:href=\"#iconMore\"></use></svg></div>");
                }
                item.classList.add("fn__none");
            }
        });
    }
    return tempDom.innerHTML;
};

export const loadBreadcrumb = (element: HTMLElement) => {
    fetchPost("/api/filetree/getDoc", {
        id: element.getAttribute("data-id"),
        size: Constants.SIZE_GET_MAX,
    }, getResponse => {
        element.parentElement.querySelector(".protyle-breadcrumb__item--active").classList.remove("protyle-breadcrumb__item--active");
        element.classList.add("protyle-breadcrumb__item--active");
        let nextElement = element.parentElement.nextElementSibling;
        while (nextElement && !nextElement.classList.contains("protyle-breadcrumb__bar")) {
            const tempElement = nextElement;
            nextElement = nextElement.nextElementSibling;
            tempElement.remove();
        }
        element.parentElement.insertAdjacentHTML("afterend", setBacklinkFold(getResponse.data.content, true));
    });
};

export const getBacklinkHeadingMore = (moreElement: HTMLElement) => {
    let nextElement = moreElement.nextElementSibling;
    while (nextElement && !nextElement.classList.contains("protyle-breadcrumb__bar")) {
        nextElement.classList.remove("fn__none");
        nextElement = nextElement.nextElementSibling;
    }
    moreElement.remove();
};

const genBreadcrumb = (blockPaths: IBreadcrumb[]) => {
    let html = "";
    blockPaths.forEach((item, index) => {
        if (index === 0) {
            return;
        }
        html += `<span class="protyle-breadcrumb__item${index === blockPaths.length - 1 ? " protyle-breadcrumb__item--active" : ""}" data-id="${item.id}">
    <svg class="popover__block" data-id="${item.id}"><use xlink:href="#${getIconByType(item.type, item.subType)}"></use></svg>
    <span class="protyle-breadcrumb__text" title="${item.name}">${item.name}</span>
</span>`;
        if (index !== blockPaths.length - 1) {
            html += '<svg class="protyle-breadcrumb__arrow"><use xlink:href="#iconRight"></use></svg>';
        }
    });
    return `<div contenteditable="false" class="protyle-breadcrumb__bar protyle-breadcrumb__bar--nowrap">${html}</div>`;
};