feat(ccusage): add native Rust CLI

.github/scripts/upsert-pr-comment.ts

@@ -0,0 +1,66 @@
+#!/usr/bin/env bun
+
+type GitHubComment = {
+	body?: string;
+	id: number;
+	user?: {
+		login?: string;
+	};
+};
+
+function requiredEnv(name: string): string {
+	const value = Bun.env[name];
+	if (value == null || value.length === 0) {
+		throw new Error(`${name} is required`);
+	}
+	return value;
+}
+
+async function githubRequest<T>(path: string, options: RequestInit = {}): Promise<T> {
+	const response = await fetch(`https://api.github.com${path}`, {
+		...options,
+		headers: {
+			accept: 'application/vnd.github+json',
+			authorization: `Bearer ${requiredEnv('GITHUB_TOKEN')}`,
+			'content-type': 'application/json',
+			'x-github-api-version': '2022-11-28',
+			...options.headers,
+		},
+	});
+
+	if (!response.ok) {
+		throw new Error(
+			`${options.method ?? 'GET'} ${path} failed: ${response.status} ${await response.text()}`,
+		);
+	}
+
+	if (response.status === 204) {
+		return undefined as T;
+	}
+
+	return response.json() as Promise<T>;
+}
+
+const repository = requiredEnv('GITHUB_REPOSITORY');
+const prNumber = requiredEnv('PR_NUMBER');
+const marker = requiredEnv('COMMENT_MARKER');
+const body = await Bun.file(requiredEnv('COMMENT_FILE')).text();
+
+const comments = await githubRequest<GitHubComment[]>(
+	`/repos/${repository}/issues/${prNumber}/comments?per_page=100`,
+);
+const existing = comments.find(
+	(comment) => comment.user?.login === 'github-actions[bot]' && comment.body?.includes(marker),
+);
+
+if (existing == null) {
+	await githubRequest(`/repos/${repository}/issues/${prNumber}/comments`, {
+		method: 'POST',
+		body: JSON.stringify({ body }),
+	});
+} else {
+	await githubRequest(`/repos/${repository}/issues/comments/${existing.id}`, {
+		method: 'PATCH',
+		body: JSON.stringify({ body }),
+	});
+}

.github/workflows/ccusage-rust-perf.yaml

@@ -0,0 +1,72 @@
+name: ccusage rust perf comment
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+
+permissions:
+  contents: read
+  pull-requests: write
+  issues: write
+
+jobs:
+  compare:
+    runs-on: ubuntu-24.04-arm
+    timeout-minutes: 15
+
+    steps:
+      - name: Checkout PR
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Checkout base
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          ref: ${{ github.event.pull_request.base.sha }}
+          path: base
+
+      - name: Setup Nix
+        uses: ./.github/actions/setup-nix
+
+      - name: Build base ccusage
+        run: nix develop --command pnpm --filter ccusage run build
+        working-directory: base
+
+      - name: Build Rust ccusage
+        run: nix develop --command pnpm --filter ccusage run build
+
+      - name: Generate small ccusage fixture
+        run: |
+          nix develop --command pnpm exec bun apps/ccusage/scripts/generate-large-fixture.ts \
+            --output-dir "$RUNNER_TEMP/ccusage-small-fixture" \
+            --size-mib 8
+
+      - name: Generate large ccusage fixture
+        run: |
+          nix develop --command pnpm exec bun apps/ccusage/scripts/generate-large-fixture.ts \
+            --output-dir "$RUNNER_TEMP/ccusage-large-fixture" \
+            --size-mib 1024
+
+      - name: Compare Rust performance
+        run: |
+          nix develop --command pnpm exec bun apps/ccusage/scripts/compare-rust-pr-performance.ts \
+            --base-dir base \
+            --head-dir . \
+            --fixture-dir "$RUNNER_TEMP/ccusage-small-fixture" \
+            --warmup 2 \
+            --runs 7 \
+            --large-fixture-dir "$RUNNER_TEMP/ccusage-large-fixture" \
+            --large-warmup 0 \
+            --large-runs 1 \
+            --output "$RUNNER_TEMP/ccusage-rust-perf-comment.md"
+
+      - name: Upsert PR comment
+        env:
+          COMMENT_FILE: ${{ runner.temp }}/ccusage-rust-perf-comment.md
+          COMMENT_MARKER: <!-- ccusage-rust-perf-comment -->
+          GITHUB_TOKEN: ${{ github.token }}
+          GITHUB_REPOSITORY: ${{ github.repository }}
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+        run: nix develop --command pnpm exec bun .github/scripts/upsert-pr-comment.ts