RSSHub/middleware/filter.js at master · asdlei99/RSSHub · GitHub

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module.exports = async (ctx, next) => {
    await next();

    if (ctx.state.data && ctx.query && (ctx.query.filter || ctx.query.filter_title || ctx.query.filter_description)) {
        ctx.state.data.item = ctx.state.data.item.filter((item) => {
            const title = item.title;
            const description = item.description;
            return !(
                (ctx.query.filter && !title.match(ctx.query.filter) && !description.match(ctx.query.filter)) ||
                (ctx.query.filter_title && !title.match(ctx.query.filter_title)) ||
                (ctx.query.filter_description && !description.match(ctx.query.filter_description))
            );
        });
    }
    if (ctx.state.data && ctx.query && (ctx.query.filterout || ctx.query.filterout_title || ctx.query.filterout_description)) {
        ctx.state.data.item = ctx.state.data.item.filter((item) => {
            const title = item.title;
            const description = item.description;
            return (
                (ctx.query.filterout && !title.match(ctx.query.filterout) && !description.match(ctx.query.filterout)) ||
                (ctx.query.filterout_title && !title.match(ctx.query.filterout_title)) ||
                (ctx.query.filterout_description && !description.match(ctx.query.filterout_description))
            );
        });
    }
};