39 lines
1.1 KiB
TypeScript
39 lines
1.1 KiB
TypeScript
import { makeParameterModifier } from "../Router.ts";
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import { FindCursor } from "https://deno.land/x/mongo@v0.31.2/src/collection/commands/find.ts";
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export class Page {
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public size?: number;
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public index?: number;
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public apply<T>(cursor: FindCursor<T>) {
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let res = cursor;
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if (this.size !== undefined) {
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if (this.index !== undefined) res = res.skip(this.index * this.size);
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res = res.limit(this.size);
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}
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return res;
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}
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public constructor(size?: number);
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public constructor(size: number, index?: number);
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public constructor(size?: number, index?: number) {
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this.size = size;
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this.index = index;
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}
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}
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export default function page() {
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return makeParameterModifier(req => {
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let n: number | undefined = Number.parseInt(req.params.n);
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let i: number | undefined = Number.parseInt(req.params.i);
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if (isNaN(n) || n < 1) n = undefined;
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if (isNaN(i) || i < 0) i = undefined;
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if (n === undefined) return new Page();
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else if (i === undefined) return new Page(n);
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else return new Page(n, i);
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});
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} |