import { getUser } from './auth';

export interface FavoriteRecord {
    _id: string;
    userId: 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;
}

/**
 * 添加收藏
 */
export async function addFavorite(worksheetId: string): Promise<boolean> {
    try {
        await getUser(); // 确保已登录
        const res = await wx.cloud.callFunction({
            name: 'userFavorites',
            data: { action: 'add', worksheetId },
        });
        const result = (res?.result as any) || {};
        return result.code === 0;
    } catch (e) {
        console.error('addFavorite failed', e);
        return false;
    }
}

/**
 * 取消收藏
 */
export async function removeFavorite(worksheetId: string): Promise<boolean> {
    try {
        await getUser();
        const res = await wx.cloud.callFunction({
            name: 'userFavorites',
            data: { action: 'remove', worksheetId },
        });
        const result = (res?.result as any) || {};
        return result.code === 0;
    } catch (e) {
        console.error('removeFavorite failed', e);
        return false;
    }
}

/**
 * 获取收藏列表
 */
export async function getFavoriteList(
    page = 1,
    pageSize = 20,
): Promise<FavoriteRecord[]> {
    try {
        await getUser();
        const res = await wx.cloud.callFunction({
            name: 'userFavorites',
            data: { action: 'list', page, pageSize },
        });
        const result = (res?.result as any) || {};
        return result.code === 0 ? result.data || [] : [];
    } catch (e) {
        console.error('getFavoriteList failed', e);
        return [];
    }
}

/**
 * 获取当前用户收藏总数
 */
export async function getFavoriteCount(): Promise<number> {
    try {
        await getUser();
        const res = await wx.cloud.callFunction({
            name: 'userFavorites',
            data: { action: 'count' },
        });
        const result = (res?.result as any) || {};
        return result.code === 0 ? Number(result.data?.count || 0) : 0;
    } catch (e) {
        console.error('getFavoriteCount failed', e);
        return 0;
    }
}

/**
 * 检查是否已收藏
 */
export async function checkFavorited(worksheetId: string): Promise<boolean> {
    try {
        await getUser();
        const res = await wx.cloud.callFunction({
            name: 'userFavorites',
            data: { action: 'check', worksheetId },
        });
        const result = (res?.result as any) || {};
        return result.code === 0 && result.data?.favorited;
    } catch (e) {
        console.error('checkFavorited failed', e);
        return false;
    }
}

/**
 * 批量检查是否已收藏，返回 { worksheetId: true } 的 map
 */
export async function batchCheckFavorited(
    worksheetIds: string[],
): Promise<Record<string, boolean>> {
    if (!worksheetIds.length) return {};
    try {
        await getUser();
        const res = await wx.cloud.callFunction({
            name: 'userFavorites',
            data: { action: 'batchCheck', worksheetIds },
        });
        const result = (res?.result as any) || {};
        return result.code === 0 ? result.data || {} : {};
    } catch (e) {
        console.error('batchCheckFavorited failed', e);
        return {};
    }
}