import { RawReqFilter } from "System";
import { describe, expect } from "@jest/globals";
import { diffFilters, expandFilter } from "./RequestSplitter";

describe("RequestSplitter", () => {
  test("single filter add value", () => {
    const a: Array<RawReqFilter> = [{ kinds: [0], authors: ["a"] }];
    const b: Array<RawReqFilter> = [{ kinds: [0], authors: ["a", "b"] }];
    const diff = diffFilters(a, b);
    expect(diff).toEqual({ filters: [{ kinds: [0], authors: ["b"] }], changed: true });
  });
  test("single filter remove value", () => {
    const a: Array<RawReqFilter> = [{ kinds: [0], authors: ["a"] }];
    const b: Array<RawReqFilter> = [{ kinds: [0], authors: ["b"] }];
    const diff = diffFilters(a, b);
    expect(diff).toEqual({ filters: [{ kinds: [0], authors: ["b"] }], changed: true });
  });
  test("single filter change critical key", () => {
    const a: Array<RawReqFilter> = [{ kinds: [0], authors: ["a"], since: 100 }];
    const b: Array<RawReqFilter> = [{ kinds: [0], authors: ["a", "b"], since: 101 }];
    const diff = diffFilters(a, b);
    expect(diff).toEqual({ filters: [{ kinds: [0], authors: ["a", "b"], since: 101 }], changed: true });
  });
  test("multiple filter add value", () => {
    const a: Array<RawReqFilter> = [
      { kinds: [0], authors: ["a"] },
      { kinds: [69], authors: ["a"] },
    ];
    const b: Array<RawReqFilter> = [
      { kinds: [0], authors: ["a", "b"] },
      { kinds: [69], authors: ["a", "c"] },
    ];
    const diff = diffFilters(a, b);
    expect(diff).toEqual({
      filters: [
        { kinds: [0], authors: ["b"] },
        { kinds: [69], authors: ["c"] },
      ],
      changed: true,
    });
  });
  test("multiple filter remove value", () => {
    const a: Array<RawReqFilter> = [
      { kinds: [0], authors: ["a"] },
      { kinds: [69], authors: ["a"] },
    ];
    const b: Array<RawReqFilter> = [
      { kinds: [0], authors: ["b"] },
      { kinds: [69], authors: ["c"] },
    ];
    const diff = diffFilters(a, b);
    expect(diff).toEqual({
      filters: [
        { kinds: [0], authors: ["b"] },
        { kinds: [69], authors: ["c"] },
      ],
      changed: true,
    });
  });
  test("add filter", () => {
    const a: Array<RawReqFilter> = [{ kinds: [0], authors: ["a"] }];
    const b: Array<RawReqFilter> = [
      { kinds: [0], authors: ["a"] },
      { kinds: [69], authors: ["c"] },
    ];
    const diff = diffFilters(a, b);
    expect(diff).toEqual({
      filters: [
        { kinds: [0], authors: ["a"] },
        { kinds: [69], authors: ["c"] },
      ],
      changed: true,
    });
  });
  test("expand filter", () => {
    const a = {
      authors: ["a", "b", "c"],
      kinds: [1, 2, 3],
      ids: ["x", "y"],
      since: 99,
      limit: 10,
    };
    expect(expandFilter(a)).toEqual([
      { authors: ["a"], kinds: [1], ids: ["x"], since: 99, limit: 10 },
      { authors: ["a"], kinds: [1], ids: ["y"], since: 99, limit: 10 },
      { authors: ["a"], kinds: [2], ids: ["x"], since: 99, limit: 10 },
      { authors: ["a"], kinds: [2], ids: ["y"], since: 99, limit: 10 },
      { authors: ["a"], kinds: [3], ids: ["x"], since: 99, limit: 10 },
      { authors: ["a"], kinds: [3], ids: ["y"], since: 99, limit: 10 },
      { authors: ["b"], kinds: [1], ids: ["x"], since: 99, limit: 10 },
      { authors: ["b"], kinds: [1], ids: ["y"], since: 99, limit: 10 },
      { authors: ["b"], kinds: [2], ids: ["x"], since: 99, limit: 10 },
      { authors: ["b"], kinds: [2], ids: ["y"], since: 99, limit: 10 },
      { authors: ["b"], kinds: [3], ids: ["x"], since: 99, limit: 10 },
      { authors: ["b"], kinds: [3], ids: ["y"], since: 99, limit: 10 },
      { authors: ["c"], kinds: [1], ids: ["x"], since: 99, limit: 10 },
      { authors: ["c"], kinds: [1], ids: ["y"], since: 99, limit: 10 },
      { authors: ["c"], kinds: [2], ids: ["x"], since: 99, limit: 10 },
      { authors: ["c"], kinds: [2], ids: ["y"], since: 99, limit: 10 },
      { authors: ["c"], kinds: [3], ids: ["x"], since: 99, limit: 10 },
      { authors: ["c"], kinds: [3], ids: ["y"], since: 99, limit: 10 },
    ]);
  });
});