Fix non-canonical crate name pages

Before the Ember Data 5 update it was possible to visit `/crates/foo-bar` when the crate was actually called `foo_bar` and vice-versa. The Ember Data 5 update broke this behavior, and this commit is restoring it, by registering a custom identifier generation method.

app/app.js

@@ -1,3 +1,4 @@
+import { setIdentifierGenerationMethod } from '@ember-data/store';
 import Application from '@ember/application';
 
 import loadInitializers from 'ember-load-initializers';
@@ -23,3 +24,26 @@ export default class App extends Application {
 }
 
 loadInitializers(App, config.modulePrefix);
+
+function toCanonicalName(name) {
+  return name.toLowerCase().replace(/_/g, '-');
+}
+
+function generateIdentifier(resource) {
+  let { id, lid, type } = resource;
+  if (lid) {
+    return lid;
+  }
+
+  if (id) {
+    if (type === 'crate') {
+      id = toCanonicalName(id);
+    }
+
+    return `@lid:${type}-${id}`;
+  }
+
+  return crypto.randomUUID();
+}
+
+setIdentifierGenerationMethod(generateIdentifier);

e2e/acceptance/crate.spec.ts

@@ -1,4 +1,4 @@
-import { test, expect } from '@/e2e/helper';
+import { expect, test } from '@/e2e/helper';
 
 test.describe('Acceptance | crate page', { tag: '@acceptance' }, () => {
   test('visiting a crate page from the front page', async ({ page, mirage }) => {
@@ -139,6 +139,20 @@ test.describe('Acceptance | crate page', { tag: '@acceptance' }, () => {
     await expect(page.locator('[data-test-try-again]')).toBeVisible();
   });
 
+  test('works for non-canonical names', async ({ page, mirage }) => {
+    await mirage.addHook(server => {
+      let crate = server.create('crate', { name: 'foo-bar' });
+      server.create('version', { crate });
+    });
+
+    await page.goto('/crates/foo_bar');
+
+    await expect(page).toHaveURL('/crates/foo_bar');
+    await expect(page).toHaveTitle('foo-bar - crates.io: Rust Package Registry');
+
+    await expect(page.locator('[data-test-heading] [data-test-crate-name]')).toHaveText('foo-bar');
+  });
+
   test('navigating to the all versions page', async ({ page, mirage }) => {
     await mirage.addHook(server => {
       server.loadFixtures();

tests/acceptance/crate-test.js

@@ -131,6 +131,19 @@ module('Acceptance | crate page', function (hooks) {
     assert.dom('[data-test-try-again]').exists();
   });
 
+  test('works for non-canonical names', async function (assert) {
+    let crate = this.server.create('crate', { name: 'foo-bar' });
+    this.server.create('version', { crate });
+
+    await visit('/crates/foo_bar');
+
+    assert.strictEqual(currentURL(), '/crates/foo_bar');
+    assert.strictEqual(currentRouteName(), 'crate.index');
+    assert.strictEqual(getPageTitle(), 'foo-bar - crates.io: Rust Package Registry');
+
+    assert.dom('[data-test-heading] [data-test-crate-name]').hasText('foo-bar');
+  });
+
   test('navigating to the all versions page', async function (assert) {
     this.server.loadFixtures();