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type {\n GitHubRefResponse,\n GitHubTreeItem,\n GitHubTreeResponse,\n ParsedGitHubUrl,\n} from \"./types.ts\";\n\nexport class GitHubClient {\n private token: string;\n private apiVersion: string = \"2022-11-28\";\n\n constructor(token?: string) {\n this.token = token || Deno.env.get(\"GITHUB_TOKEN\") || \"\";\n }\n\n /**\n * Parse GitHub URL into components\n */\n parseUrl(url: string): ParsedGitHubUrl | null {\n // Support various GitHub URL formats:\n // https://github.com/owner/repo\n // https://github.com/owner/repo/tree/branch/path/to/folder\n // https://github.com/owner/repo/tree/branch\n\n const patterns = [\n /github\\.com\\/([^\\/]+)\\/([^\\/]+)\\/tree\\/([^\\/]+)\\/(.+)/,\n /github\\.com\\/([^\\/]+)\\/([^\\/]+)\\/tree\\/([^\\/]+)\\/?$/,\n /github\\.com\\/([^\\/]+)\\/([^\\/]+)\\/?$/,\n ];\n\n for (const pattern of patterns) {\n const match = url.match(pattern);\n if (match) {\n const [, owner, repo, branch = \"main\", path = \"\"] = match;\n return {\n owner,\n repo: repo.replace(/\\.git$/, \"\"),\n branch,\n path: path || \"\",\n };\n }\n }\n\n return null;\n }\n\n /**\n * Sleep utility for retries\n */\n private sleep(ms: number): Promise {\n return new Promise((resolve) => setTimeout(resolve, ms));\n }\n\n /**\n * Fetch with exponential backoff retry\n */\n private async fetchWithRetry(\n url: string,\n maxRetries: number = 3,\n options: RequestInit = {},\n ): Promise {\n let lastError: Error | null = null;\n\n for (let attempt = 0; attempt <= maxRetries; attempt++) {\n try {\n const headers = new Headers(options.headers);\n\n if (this.token) {\n headers.set(\"Authorization\", `Bearer ${this.token}`);\n }\n // Only set default Accept header if not already specified\n if (!headers.has(\"Accept\")) {\n headers.set(\"Accept\", \"application/vnd.github+json\");\n }\n headers.set(\"X-GitHub-Api-Version\", this.apiVersion);\n\n const response = await fetch(url, { ...options, headers });\n\n // Don't retry on 4xx errors (except rate limit)\n if (\n response.status >= 400 &&\n response.status < 500 &&\n response.status !== 429\n ) {\n return response;\n }\n\n // Handle rate limiting with Retry-After\n if (response.status === 429 || response.status === 403) {\n const retryAfter = response.headers.get(\"retry-after\");\n if (retryAfter && attempt < maxRetries) {\n const waitSeconds = parseInt(retryAfter);\n console.log(\n `Rate limited. Waiting ${waitSeconds}s before retry ${\n attempt + 1\n }...`,\n );\n await this.sleep(waitSeconds * 1000);\n continue;\n }\n }\n\n // Success - return response\n if (response.ok) {\n return response;\n }\n\n // 5xx errors - retry with backoff\n if (response.status >= 500 && attempt < maxRetries) {\n const delay = Math.min(1000 * Math.pow(2, attempt), 10000);\n console.log(\n `Server error (${response.status}), retrying in ${delay}ms... (attempt ${\n attempt + 1\n }/${maxRetries})`,\n );\n await this.sleep(delay);\n continue;\n }\n\n return response;\n } catch (error) {\n lastError = error as Error;\n\n if (attempt < maxRetries) {\n const delay = Math.min(1000 * Math.pow(2, attempt), 10000);\n console.log(\n `Request failed, retrying in ${delay}ms... (attempt ${\n attempt + 1\n }/${maxRetries})`,\n );\n await this.sleep(delay);\n }\n }\n }\n\n throw lastError || new Error(\"Request failed after retries\");\n }\n\n /**\n * Get the commit SHA for a branch\n */\n async getBranchRef(\n owner: string,\n repo: string,\n branch: string,\n ): Promise {\n const url =\n `https://api.github.com/repos/${owner}/${repo}/git/refs/heads/${branch}`;\n const response = await this.fetchWithRetry(url);\n\n if (!response.ok) {\n throw new Error(\n `Failed to fetch branch ref: ${response.status} ${await response\n .text()}`,\n );\n }\n\n const data: GitHubRefResponse = await response.json();\n return data.object.sha;\n }\n\n /**\n * Get repository tree with all files recursively\n */\n async getRepoTree(\n owner: string,\n repo: string,\n branch: string,\n subPath: string = \"\",\n ): Promise {\n // First, get the commit SHA for the branch\n const commitSha = await this.getBranchRef(owner, repo, branch);\n\n // Get the tree with recursive=1\n const treeUrl =\n `https://api.github.com/repos/${owner}/${repo}/git/trees/${commitSha}?recursive=1`;\n const treeRes = await this.fetchWithRetry(treeUrl);\n\n if (!treeRes.ok) {\n throw new Error(\n `Failed to fetch tree: ${treeRes.status} ${await treeRes.text()}`,\n );\n }\n\n const treeData: GitHubTreeResponse = await treeRes.json();\n\n if (treeData.truncated) {\n throw new Error(\"Repository tree is too large (truncated by GitHub API)\");\n }\n\n // Filter for blobs (files) only\n let items = treeData.tree.filter((item) => item.type === \"blob\");\n\n // Filter for the subPath if specified\n if (subPath) {\n const normalizedPath = subPath.endsWith(\"/\") ? subPath : subPath + \"/\";\n items = items.filter((item) => item.path.startsWith(normalizedPath));\n\n // Remove the subPath prefix from paths\n items = items.map((item) => ({\n ...item,\n path: item.path.substring(normalizedPath.length),\n }));\n }\n\n return items;\n }\n\n /**\n * Fetch blob content as raw bytes\n */\n async fetchBlobContent(blobUrl: string): Promise {\n const response = await this.fetchWithRetry(blobUrl, 3, {\n headers: { Accept: \"application/vnd.github.raw+json\" },\n });\n\n if (!response.ok) {\n throw new Error(`Failed to fetch blob: ${response.status}`);\n }\n\n const arrayBuffer = await response.arrayBuffer();\n return new Uint8Array(arrayBuffer);\n }\n\n /**\n * Get the zipball URL for a repository\n */\n getZipballUrl(owner: string, repo: string, branch: string): string {\n return `https://api.github.com/repos/${owner}/${repo}/zipball/${branch}`;\n }\n\n /**\n * Stream zipball directly from GitHub\n */\n async streamZipball(\n owner: string,\n repo: string,\n branch: string,\n ): Promise {\n const url = this.getZipballUrl(owner, repo, branch);\n return await this.fetchWithRetry(url);\n }\n}","deleted","label",[169,150],"client","permalink","https://www.val.town/x/kamalnrf/github-zip-api/code/client/github.ts","extension","actionData","errors"]