import { after, before, describe, it } from "node:test";
import assert from "node:assert/strict";
import { createTestDb, type TestDb } from "../helpers/sqlite.js";
import { createTestServer, type TestServer } from "../helpers/koa.js";
import { hashPassword } from "../../src/util/hash.js";
import type { ClientUser } from "../../src/db/types/User.js";

const PASSWORD = "user-visibility-password";

function basic(email: string): string {
  return `Basic ${Buffer.from(`${email}:${PASSWORD}`).toString("base64")}`;
}

describe("API user email visibility", () => {
  let testDb: TestDb;
  let server: TestServer;
  let admin: ClientUser;
  let normal: ClientUser;
  let coResident: ClientUser;
  let abodeAdmin: ClientUser;
  let aid: string;

  before(async () => {
    testDb = await createTestDb();
    server = await createTestServer(testDb.db);
    const password = await hashPassword(PASSWORD);
    admin = await testDb.db.createUser({
      email: "global-admin@test.example",
      name: "Global Admin",
      password,
      flags: { admin: true },
    });
    normal = await testDb.db.createUser({
      email: "normal@test.example",
      name: "Normal",
      password,
      flags: {},
    });
    coResident = await testDb.db.createUser({
      email: "co-resident@test.example",
      name: "Co-resident",
      password,
      flags: {},
    });
    abodeAdmin = await testDb.db.createUser({
      email: "abode-admin@test.example",
      name: "Abode Admin",
      password,
      flags: {},
    });
    const abode = await testDb.db.createAbode(
      { name: "Shared abode" },
      { uid: admin.uid },
    );
    aid = abode.aid;
    for (const user of [normal, coResident]) {
      await testDb.db.createResident(
        { uid: user.uid, aid, flags: {} },
        { uid: admin.uid },
      );
    }
    await testDb.db.createResident(
      { uid: abodeAdmin.uid, aid, flags: { admin: true } },
      { uid: admin.uid },
    );
  });

  after(async () => {
    await server.close();
    testDb.close();
  });

  it("shows a normal caller only their own email in GET /users", async () => {
    const response = await fetch(`${server.url}/users`, {
      headers: { Authorization: basic(normal.email) },
    });
    assert.equal(response.status, 200);
    const users = (await response.json()) as ClientUser[];
    assert.equal(
      users.find((user) => user.uid === normal.uid)?.email,
      normal.email,
    );
    assert.ok(!("email" in users.find((user) => user.uid === coResident.uid)!));
  });

  it("hides another user's email in GET /users/:uid", async () => {
    const response = await fetch(`${server.url}/users/${coResident.uid}`, {
      headers: { Authorization: basic(normal.email) },
    });
    assert.equal(response.status, 200);
    assert.ok(!("email" in ((await response.json()) as object)));
  });

  it("allows global admins to see user emails", async () => {
    const response = await fetch(`${server.url}/users`, {
      headers: { Authorization: basic(admin.email) },
    });
    assert.equal(response.status, 200);
    const users = (await response.json()) as ClientUser[];
    assert.equal(
      users.find((user) => user.uid === coResident.uid)?.email,
      coResident.email,
    );
  });

  it("makes lookup by email global-admin-only", async () => {
    const denied = await fetch(
      `${server.url}/users/by-email?email=${encodeURIComponent(coResident.email)}`,
      { headers: { Authorization: basic(normal.email) } },
    );
    assert.equal(denied.status, 401);

    const allowed = await fetch(
      `${server.url}/users/by-email?email=${encodeURIComponent(coResident.email)}`,
      { headers: { Authorization: basic(admin.email) } },
    );
    assert.equal(allowed.status, 200);
    assert.equal(
      ((await allowed.json()) as ClientUser).email,
      coResident.email,
    );
  });

  it("shows co-resident emails to an abode admin", async () => {
    const response = await fetch(`${server.url}/abodes/${aid}/users`, {
      headers: { Authorization: basic(abodeAdmin.email) },
    });
    assert.equal(response.status, 200);
    const users = (await response.json()) as ClientUser[];
    assert.equal(
      users.find((user) => user.uid === coResident.uid)?.email,
      coResident.email,
    );
  });

  it("hides co-resident emails from a non-admin resident", async () => {
    const response = await fetch(`${server.url}/abodes/${aid}/users`, {
      headers: { Authorization: basic(normal.email) },
    });
    assert.equal(response.status, 200);
    const users = (await response.json()) as ClientUser[];
    assert.equal(
      users.find((user) => user.uid === normal.uid)?.email,
      normal.email,
    );
    assert.ok(!("email" in users.find((user) => user.uid === coResident.uid)!));
  });
});