import { apiRequest } from '../services/api-request';
import {
    legacyWorksheet,
    memberStats,
    type MemberPage,
} from '../services/member-api';
import tracker from './tracker';

export interface FavoriteRecord {
    _id: string;
    worksheetId: string;
    createdAt: string;
    worksheet?: {
        _id: string;
        title: string;
        subtitle: string;
        category: string;
        subcategory: string;
        path: string;
        ageMin: number;
        ageMax: number;
        difficulty: number;
        previewImg: string;
        tags: string[];
    } | null;
}

/** 收藏操作使用新后端当前账户；调用失败不能向其他用户补发。 */
export async function addFavorite(worksheetId: string): Promise<boolean> {
    try {
        await apiRequest(`/me/favorites/${encodeURIComponent(worksheetId)}`, {
            method: 'PUT',
        });
        tracker.reportFavorite(currentRoute(), worksheetId, true);
        return true;
    } catch {
        return false;
    }
}
export async function removeFavorite(worksheetId: string): Promise<boolean> {
    try {
        await apiRequest(`/me/favorites/${encodeURIComponent(worksheetId)}`, {
            method: 'DELETE',
        });
        tracker.reportFavorite(currentRoute(), worksheetId, false);
        return true;
    } catch {
        return false;
    }
}
export async function getFavoriteList(
    page = 1,
    pageSize = 20,
): Promise<FavoriteRecord[]> {
    const result = await apiRequest<MemberPage>('/me/favorites', {
        data: { page, pageSize },
    });
    return result.items.map((row) => ({
        ...row,
        _id: row.id,
        worksheet: legacyWorksheet(row.worksheet),
    }));
}
export async function getFavoriteCount(): Promise<number> {
    return (await memberStats()).favoriteCount;
}
export async function batchCheckFavorited(
    worksheetIds: string[],
): Promise<Record<string, boolean>> {
    if (!worksheetIds.length) return {};
    return apiRequest('/me/favorites/check', {
        method: 'POST',
        data: { worksheetIds },
    });
}
export async function checkFavorited(worksheetId: string): Promise<boolean> {
    return (await batchCheckFavorited([worksheetId]))[worksheetId] === true;
}

function currentRoute() {
    const pages = getCurrentPages();
    return pages[pages.length - 1]?.route || '';
}