import { assertEquals } from "@std/assert";
import {
  dumpPath,
  feedPath,
  parsePagePath,
  playlistPath,
  playlistSortQuery,
  playlistsPath,
  searchPath,
  userPath,
} from "../paths.ts";

Deno.test("builders: one hierarchy, default views bare", () => {
  assertEquals(userPath("bob"), "/@bob");
  assertEquals(userPath("bob", "playlists"), "/@bob/playlists");
  assertEquals(userPath("bob", "follow"), "/@bob/follow");
  assertEquals(userPath("bob", "follow", "users"), "/@bob/follow");
  assertEquals(
    userPath("bob", "follow", "playlists"),
    "/@bob/follow/playlists",
  );
  const item = { ownerUsername: "bob", slug: "never-gonna" };
  assertEquals(dumpPath(item), "/@bob/dumps/never-gonna");
  assertEquals(playlistPath(item), "/@bob/playlists/never-gonna");
  assertEquals(
    dumpPath({ ownerUsername: "bob", slug: "a-b" }, "edit"),
    "/@bob/dumps/a-b/edit",
  );
  assertEquals(feedPath(), "/");
  assertEquals(feedPath(undefined, "hot"), "/hot");
  assertEquals(feedPath("music"), "/music");
  assertEquals(feedPath("music", "follow"), "/music/follow");
  assertEquals(feedPath("music", "follow", "users"), "/music/follow");
  assertEquals(
    feedPath(undefined, "follow", "playlists"),
    "/follow/playlists",
  );
  assertEquals(feedPath(undefined, "new", "playlists"), "/new");
  assertEquals(searchPath(), "/search");
  assertEquals(searchPath("users", "a b"), "/search/users?q=a%20b");
  assertEquals(searchPath("dumps", "x"), "/search?q=x");
  assertEquals(playlistsPath(), "/playlists");
  assertEquals(playlistsPath("mixes"), "/playlists/mixes");
  assertEquals(playlistsPath(undefined, "updated"), "/playlists");
  assertEquals(playlistsPath("mixes", "new"), "/playlists/mixes?sort=new");
  // The query of a list that has other parameters: the default order takes
  // an old `sort` out, and leaves the rest.
  const category = new URLSearchParams({ category: "mixes", sort: "new" });
  assertEquals(
    playlistSortQuery("dumps", category),
    "?category=mixes&sort=dumps",
  );
  assertEquals(playlistSortQuery("updated", category), "?category=mixes");
  assertEquals(playlistSortQuery("updated"), "");
});

Deno.test("parsePagePath: what a path under a user names", () => {
  assertEquals(parsePagePath("/@bob"), {
    kind: "user",
    username: "bob",
    rest: [],
  });
  assertEquals(parsePagePath("/@bob/follow/playlists/"), {
    kind: "user",
    username: "bob",
    rest: ["follow", "playlists"],
  });
  assertEquals(parsePagePath("/@bob/dumps/never-gonna"), {
    kind: "dump",
    username: "bob",
    slug: "never-gonna",
    edit: false,
  });
  assertEquals(parsePagePath("/%40bob/dumps/x/edit"), {
    kind: "dump",
    username: "bob",
    slug: "x",
    edit: true,
  });
  assertEquals(parsePagePath("/@bob/playlists/mix"), {
    kind: "playlist",
    username: "bob",
    slug: "mix",
    edit: false,
  });
  assertEquals(parsePagePath("/@bob/playlists/mix/edit"), {
    kind: "playlist",
    username: "bob",
    slug: "mix",
    edit: true,
  });
  assertEquals(
    playlistPath({ ownerUsername: "bob", slug: "mix" }, "edit"),
    "/@bob/playlists/mix/edit",
  );
  for (
    const other of [
      "/",
      "/hot",
      "/music/hot",
      "/search/users",
      "/@",
      "/@b-ob",
      "/@bob/nope",
      "/@bob/follow/users",
      "/@bob/dumps/x/y",
      "/@bob/playlists/x/y",
      "/@bob/%E0%A4%A",
    ]
  ) {
    assertEquals(parsePagePath(other), null, other);
  }
});

Deno.test("handles: a user from another instance is /@name@host", () => {
  assertEquals(userPath("alice@music.example"), "/@alice@music.example");
  assertEquals(
    dumpPath({ ownerUsername: "alice@localhost:8001", slug: "x" }),
    "/@alice@localhost:8001/dumps/x",
  );
  assertEquals(parsePagePath("/@alice@music.example/playlists/mix"), {
    kind: "playlist",
    username: "alice@music.example",
    slug: "mix",
    edit: false,
  });
  assertEquals(parsePagePath("/@alice%40music.example"), {
    kind: "user",
    username: "alice@music.example",
    rest: [],
  });
  assertEquals(parsePagePath("/@alice@"), null);
  assertEquals(parsePagePath("/@alice@-bad.example"), null);
});