import type { MenuItem } from "@/src/entities/menu";

export type ParsedStatisticsMenuUrl = {
    categoryFromPath: string | null;
    componentName: string | null;
    rawUrlPath: string;
};

/** 메뉴 `urlPath`에서 통계 화면 카테고리·컴포넌트명을 파싱합니다. */
export function parseStatisticsMenuUrlPath(
    urlPath: string,
): ParsedStatisticsMenuUrl {
    const trimmed = (urlPath ?? "").trim();
    if (!trimmed) {
        return { categoryFromPath: null, componentName: null, rawUrlPath: trimmed };
    }

    let pathPart = trimmed;
    let queryString = "";
    const queryIndex = trimmed.indexOf("?");
    if (queryIndex >= 0) {
        pathPart = trimmed.slice(0, queryIndex);
        queryString = trimmed.slice(queryIndex + 1);
    }

    const tabParam = new URLSearchParams(queryString).get("tab")?.trim() || null;
    const segments = pathPart.replace(/^\/+/, "").split("/").filter(Boolean);

    let categoryFromPath: string | null = null;
    if (segments[0] === "statistics" && segments.length >= 2) {
        categoryFromPath = segments[1] ?? null;
    }

    let componentName = tabParam;
    if (!componentName) {
        if (!pathPart.includes("/") && !queryString) {
            componentName = trimmed;
        } else if (segments.length === 1 && segments[0] !== "statistics") {
            componentName = segments[0] ?? null;
        } else if (segments[0] === "statistics" && segments.length >= 3) {
            componentName = segments[segments.length - 1] ?? null;
        }
    }

    return { categoryFromPath, componentName, rawUrlPath: trimmed };
}

/** 동적 import용 카테고리 폴더명 (`input`, `review` 등) */
export function resolveStatisticsCategory(
    urlPath: string,
    parentEngNm: string,
): string {
    const { categoryFromPath } = parseStatisticsMenuUrlPath(urlPath);
    return categoryFromPath || parentEngNm || "";
}

/** 탭 ID·URL `?tab=` 값 - 컴포넌트 파일명(확장자 제외) */
export function resolveStatisticsTabId(urlPath: string): string {
    const { componentName, rawUrlPath } = parseStatisticsMenuUrlPath(urlPath);
    return componentName || rawUrlPath;
}

/** `@/src/components/statistics/{category}/{Component}` 또는 루트 컴포넌트 경로 */
export function buildStatisticsComponentImportPath(
    urlPath: string,
    parentEngNm: string,
): string {
    const { componentName } = parseStatisticsMenuUrlPath(urlPath);
    const category = resolveStatisticsCategory(urlPath, parentEngNm);
    const name = componentName || urlPath;
    if (!category) {
        return `@/src/components/statistics/${name}`;
    }
    return `@/src/components/statistics/${category}/${name}`;
}

export function menuMatchesStatisticsTabId(
    menu: MenuItem,
    tabId: string,
): boolean {
    if (!tabId) return false;
    if (menu.urlPath === tabId) return true;
    return resolveStatisticsTabId(menu.urlPath) === tabId;
}