import { useState, useMemo, type ComponentType } from "react";
import { useEditorStore, type ToolType } from "@/pages/editor/store/editorStore";
import Input from "@/components/Input";
import Button from "@/components/Button";
import Select from "@/components/Select";
import {
    Link,
    ArrowCircleRight,
    ArrowCircleLeft,
    DocumentText,
    ArrowLeft,
    ArrowRight,
    Add,
} from "iconsax-react";
import { clx } from "@/helpers/utils";

type LinkType = "link" | "nextPage" | "prevPage" | "page" | "firstPage" | "lastPrev";

const linkTypesConfig: Record<
    LinkType,
    { icon: ComponentType<{ size?: number; color?: string }>; label: string }
> = {
    link: { icon: Link, label: "لینک" },
    nextPage: { icon: ArrowCircleRight, label: "صفحه بعدی" },
    prevPage: { icon: ArrowCircleLeft, label: "صفحه قبلی" },
    page: { icon: DocumentText, label: "صفحه" },
    firstPage: { icon: ArrowLeft, label: "اولین صفحه" },
    lastPrev: { icon: ArrowRight, label: "آخرین صفحه" },
};

const internalLinkUrls: Partial<Record<LinkType, string>> = {
    nextPage: "page://next",
    prevPage: "page://prev",
    firstPage: "page://first",
    lastPrev: "page://last",
};

const LinkInput = () => {
    const [selectedLinkType, setSelectedLinkType] = useState<LinkType>("link");
    const [linkUrl, setLinkUrl] = useState("");
    const [linkTitle, setLinkTitle] = useState("");
    const [targetPageNumber, setTargetPageNumber] = useState("");
    const pages = useEditorStore((state) => state.pages);

    const linkTypes = useMemo(
        () =>
            (Object.entries(linkTypesConfig) as [LinkType, typeof linkTypesConfig[LinkType]][])
                .map(([type, config]) => ({
                    type,
                    ...config,
                })),
        []
    );

    const pageOptions = useMemo(
        () =>
            pages.map((page, index) => ({
                value: String(index + 1),
                label: page.name || `صفحه ${index + 1}`,
            })),
        [pages]
    );

    const selectedLinkConfig = linkTypesConfig[selectedLinkType];
    const selectedPage = targetPageNumber
        ? pageOptions.find((page) => page.value === targetPageNumber)
        : undefined;
    const resolvedLinkUrl =
        selectedLinkType === "link"
            ? linkUrl.trim()
            : internalLinkUrls[selectedLinkType] ?? (targetPageNumber ? `page://${targetPageNumber}` : "");
    const defaultLinkText =
        selectedLinkType === "link"
            ? resolvedLinkUrl
            : selectedLinkType === "page"
                ? selectedPage?.label || selectedLinkConfig.label
                : selectedLinkConfig.label;
    const isAddDisabled =
        selectedLinkType === "link"
            ? !linkUrl.trim()
            : selectedLinkType === "page" && !targetPageNumber;

    const handleAddLink = () => {
        if (!resolvedLinkUrl) return;

        const newLink = {
            id: `link-${Date.now()}`,
            type: "link" as ToolType,
            x: 100,
            y: 100,
            text: linkTitle.trim() || defaultLinkText,
            linkUrl: resolvedLinkUrl,
            fontSize: 24,
            fill: "#0000ff",
            fontWeight: "normal",
        };
        const { addObject, setSelectedObjectId, setTool } = useEditorStore.getState();
        addObject(newLink);
        setSelectedObjectId(newLink.id);
        setTool("select");
        setLinkUrl("");
        setLinkTitle("");
        setTargetPageNumber("");
    };

    return (
        <div className="space-y-6">
            <h2 className="text-lg font-semibold text-right">لینک ها</h2>

            <div className="grid grid-cols-2 gap-3">
                {linkTypes.map((item) => {
                    const isSelected = selectedLinkType === item.type;
                    const Icon = item.icon;
                    return (
                        <button
                            key={item.type}
                            onClick={() => setSelectedLinkType(item.type)}
                            className={clx(
                                "flex flex-col items-center justify-center gap-2 p-4 rounded-xl bg-gray-50 border transition-colors shadow-sm",
                                isSelected
                                    ? "border-black border-2"
                                    : "border-gray-200 hover:border-gray-300"
                            )}
                        >
                            <Icon size={20} color="black" />
                            <span className="text-xs text-black">{item.label}</span>
                        </button>
                    );
                })}
            </div>

            <div className="space-y-4">
                <div className="space-y-2">
                    <h3 className="text-sm font-medium text-right">عنوان لینک</h3>
                    <Input
                        value={linkTitle}
                        onChange={(e) => setLinkTitle(e.target.value)}
                        placeholder="عنوان لینک"
                    />
                </div>
                {selectedLinkType === "link" ? (
                    <div className="space-y-2">
                        <h3 className="text-sm font-medium text-right">لینک</h3>
                        <Input
                            value={linkUrl}
                            onChange={(e) => setLinkUrl(e.target.value)}
                            placeholder="https://example.com"
                            onEnter={handleAddLink}
                        />
                    </div>
                ) : null}
                {selectedLinkType === "page" ? (
                    <div className="space-y-2">
                        <h3 className="text-sm font-medium text-right">انتخاب صفحه</h3>
                        <Select
                            value={targetPageNumber}
                            onChange={(e) => setTargetPageNumber(e.target.value)}
                            placeholder="صفحه مقصد را انتخاب کنید"
                            items={pageOptions}
                        />
                    </div>
                ) : null}
                <Button
                    onClick={handleAddLink}
                    disabled={isAddDisabled}
                    className="w-full"
                    leftIcon={<Add size={20} color="white" />}
                >
                    افزودن
                </Button>
            </div>
        </div>
    );
};

export default LinkInput;