import { assertEquals } from "@std/assert";
import {
  instanceHost,
  isFederationEvent,
  parseInstance,
} from "../federation.ts";
import { HANDLE_RE, localHandle, splitHandle } from "../validation.ts";

Deno.test("parseInstance: a host or a URL names an instance's origin", () => {
  assertEquals(parseInstance("music.example"), "https://music.example");
  assertEquals(parseInstance(" Music.Example/ "), "https://music.example");
  assertEquals(
    parseInstance("http://localhost:8001"),
    "http://localhost:8001",
  );
  assertEquals(parseInstance("localhost:8001"), "https://localhost:8001");
  assertEquals(parseInstance("https://music.example/path"), null);
  assertEquals(parseInstance("ftp://music.example"), null);
  assertEquals(parseInstance("https://u:p@music.example"), null);
  assertEquals(parseInstance(""), null);
  assertEquals(instanceHost("http://localhost:8001"), "localhost:8001");
});

Deno.test("handles: this instance's host is dropped, another's kept", () => {
  const self = (host: string) => host === "gerbeur.example";
  assertEquals(localHandle("bob@gerbeur.example", self), "bob");
  assertEquals(localHandle("bob@music.example", self), "bob@music.example");
  assertEquals(localHandle("bob", self), "bob");
});

Deno.test("handles: a name, and a host for a user from another instance", () => {
  assertEquals(splitHandle("bob"), { name: "bob" });
  assertEquals(splitHandle("alice@music.example"), {
    name: "alice",
    host: "music.example",
  });
  for (const ok of ["bob", "alice@music.example", "c_1@localhost:8001"]) {
    assertEquals(HANDLE_RE.test(ok), true, ok);
  }
  for (const bad of ["", "a@", "a@b.", "a b", "a@b@c", "a@-b"]) {
    assertEquals(HANDLE_RE.test(bad), false, bad);
  }
});

Deno.test("isFederationEvent: an update carries the claims", () => {
  assertEquals(isFederationEvent({ type: "revoke" }), true);
  assertEquals(
    isFederationEvent({
      type: "update",
      claims: { preferred_username: "a", email: "a@b.c" },
    }),
    true,
  );
  assertEquals(isFederationEvent({ type: "update" }), false);
  assertEquals(isFederationEvent({ type: "delete" }), false);
});