github: move artifact and summary logic to dedicated classes

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

src/github/artifact.ts

@@ -0,0 +1,126 @@
+/**
+ * Copyright 2026 actions-toolkit authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import crypto from 'crypto';
+import fs from 'fs';
+import path from 'path';
+import {CreateArtifactRequest, FinalizeArtifactRequest, StringValue} from '@actions/artifact/lib/generated';
+import {internalArtifactTwirpClient} from '@actions/artifact/lib/internal/shared/artifact-twirp-client';
+import {getBackendIdsFromToken} from '@actions/artifact/lib/internal/shared/util';
+import {getExpiration} from '@actions/artifact/lib/internal/upload/retention';
+import {InvalidResponseError, NetworkError} from '@actions/artifact';
+import * as core from '@actions/core';
+import {TransferProgressEvent} from '@azure/core-rest-pipeline';
+import {BlobClient, BlobHTTPHeaders} from '@azure/storage-blob';
+
+import {UploadOpts, UploadResponse} from '../types/github/artifact.js';
+import {GitHub} from './github';
+
+export class GitHubArtifact {
+  public static async upload(opts: UploadOpts): Promise<UploadResponse> {
+    if (GitHub.isGHES) {
+      throw new Error('@actions/artifact v2.0.0+ is currently not supported on GHES.');
+    }
+
+    const artifactName = path.basename(opts.filename);
+    const backendIds = getBackendIdsFromToken();
+    const artifactClient = internalArtifactTwirpClient();
+
+    core.info(`Uploading ${artifactName} to blob storage`);
+
+    const createArtifactReq: CreateArtifactRequest = {
+      workflowRunBackendId: backendIds.workflowRunBackendId,
+      workflowJobRunBackendId: backendIds.workflowJobRunBackendId,
+      name: artifactName,
+      version: 4
+    };
+
+    const expiresAt = getExpiration(opts?.retentionDays);
+    if (expiresAt) {
+      createArtifactReq.expiresAt = expiresAt;
+    }
+
+    const createArtifactResp = await artifactClient.CreateArtifact(createArtifactReq);
+    if (!createArtifactResp.ok) {
+      throw new InvalidResponseError('cannot create artifact client');
+    }
+
+    let uploadByteCount = 0;
+    const blobClient = new BlobClient(createArtifactResp.signedUploadUrl);
+    const blockBlobClient = blobClient.getBlockBlobClient();
+
+    const headers: BlobHTTPHeaders = {
+      blobContentDisposition: `attachment; filename="${artifactName}"`
+    };
+    if (opts.mimeType) {
+      headers.blobContentType = opts.mimeType;
+    }
+    core.debug(`Upload headers: ${JSON.stringify(headers)}`);
+
+    try {
+      core.info('Beginning upload of artifact content to blob storage');
+      await blockBlobClient.uploadFile(opts.filename, {
+        blobHTTPHeaders: headers,
+        onProgress: (progress: TransferProgressEvent): void => {
+          core.info(`Uploaded bytes ${progress.loadedBytes}`);
+          uploadByteCount = progress.loadedBytes;
+        }
+      });
+    } catch (error) {
+      if (NetworkError.isNetworkErrorCode(error?.code)) {
+        throw new NetworkError(error?.code);
+      }
+      throw error;
+    }
+
+    core.info('Finished uploading artifact content to blob storage!');
+
+    const sha256Hash = crypto.createHash('sha256').update(fs.readFileSync(opts.filename)).digest('hex');
+    core.info(`SHA256 hash of uploaded artifact is ${sha256Hash}`);
+
+    const finalizeArtifactReq: FinalizeArtifactRequest = {
+      workflowRunBackendId: backendIds.workflowRunBackendId,
+      workflowJobRunBackendId: backendIds.workflowJobRunBackendId,
+      name: artifactName,
+      size: uploadByteCount ? uploadByteCount.toString() : '0'
+    };
+
+    if (sha256Hash) {
+      finalizeArtifactReq.hash = StringValue.create({
+        value: `sha256:${sha256Hash}`
+      });
+    }
+
+    core.info(`Finalizing artifact upload`);
+    const finalizeArtifactResp = await artifactClient.FinalizeArtifact(finalizeArtifactReq);
+    if (!finalizeArtifactResp.ok) {
+      throw new InvalidResponseError('Cannot finalize artifact upload');
+    }
+
+    const artifactId = BigInt(finalizeArtifactResp.artifactId);
+    core.info(`Artifact successfully finalized (${artifactId})`);
+
+    const artifactURL = `${GitHub.workflowRunURL()}/artifacts/${artifactId}`;
+    core.info(`Artifact download URL: ${artifactURL}`);
+
+    return {
+      id: Number(artifactId),
+      filename: artifactName,
+      size: uploadByteCount,
+      url: artifactURL
+    };
+  }
+}