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`autorepair.ts`

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2c34075Claude	1	/**
	2	* Auto-Repair Engine
	3	*
	4	* When code hits gluecron, it gets scanned and automatically repaired.
	5	* No human intervention needed. The developer pushes broken code,
	6	* gluecron fixes it and commits the repair in seconds.
	7	*
	8	* Repairs:
	9	* 1. Trailing whitespace / inconsistent line endings
	10	* 2. Missing newline at end of file
	11	* 3. Hardcoded secrets → environment variable references
	12	* 4. Known vulnerable dependency versions → safe versions
	13	* 5. Missing .gitignore entries (node_modules, .env, etc.)
	14	* 6. JSON syntax errors (trailing commas, etc.)
	15	* 7. Package.json missing fields
	16	* 8. Insecure defaults (eval, innerHTML)
	17	* 9. Import sorting
	18	* 10. Dead code detection markers
	19	*/
	20
	21	import { getRepoPath, getDefaultBranch } from "../git/repository";
	22
	23	export interface RepairResult {
	24	repaired: boolean;
	25	repairs: Repair[];
	26	commitSha: string \| null;
	27	}
	28
	29	export interface Repair {
	30	file: string;
	31	type: string;
	32	description: string;
	33	linesChanged: number;
	34	}
	35
	36	async function exec(
	37	cmd: string[],
	38	cwd: string,
	39	stdin?: string
	40	): Promise<{ stdout: string; exitCode: number }> {
	41	const proc = Bun.spawn(cmd, {
	42	cwd,
	43	stdout: "pipe",
	44	stderr: "pipe",
	45	stdin: stdin !== undefined ? "pipe" : undefined,
	46	env: {
	47	...process.env,
	48	GIT_AUTHOR_NAME: "gluecron[bot]",
	49	GIT_AUTHOR_EMAIL: "bot@gluecron.com",
	50	GIT_COMMITTER_NAME: "gluecron[bot]",
	51	GIT_COMMITTER_EMAIL: "bot@gluecron.com",
	52	},
	53	});
	54	if (stdin !== undefined && proc.stdin) {
	55	proc.stdin.write(new TextEncoder().encode(stdin));
	56	proc.stdin.end();
	57	}
	58	const stdout = await new Response(proc.stdout).text();
	59	const exitCode = await proc.exited;
	60	return { stdout: stdout.trim(), exitCode };
	61	}
	62
	63	export async function autoRepair(
	64	owner: string,
	65	repo: string,
	66	ref: string
	67	): Promise<RepairResult> {
	68	const repoDir = getRepoPath(owner, repo);
	69	const repairs: Repair[] = [];
	70
	71	// Get all files in the tree
	72	const { stdout: fileList } = await exec(
	73	["git", "ls-tree", "-r", "--name-only", ref],
	74	repoDir
	75	);
	76	const files = fileList.split("\n").filter(Boolean);
	77
	78	// Track modified blobs: path -> new content
	79	const modifications: Map<string, string> = new Map();
	80
	81	// ─── REPAIR 1: Ensure .gitignore has essential entries ─────
	82
	83	const gitignoreFile = files.find((f) => f === ".gitignore");
	84	if (gitignoreFile) {
	85	const { stdout: content } = await exec(
	86	["git", "show", `${ref}:.gitignore`],
	87	repoDir
	88	);
	89	const essentialEntries = [
	90	"node_modules/",
	91	".env",
	92	".env.local",
	93	".DS_Store",
	94	"dist/",
	95	];
	96	const lines = content.split("\n");
	97	const missing = essentialEntries.filter(
	98	(entry) => !lines.some((l) => l.trim() === entry)
	99	);
	100	if (missing.length > 0) {
	101	const newContent = content.trimEnd() + "\n\n# Auto-added by gluecron\n" + missing.join("\n") + "\n";
	102	modifications.set(".gitignore", newContent);
	103	repairs.push({
	104	file: ".gitignore",
	105	type: "gitignore",
	106	description: `Added missing entries: ${missing.join(", ")}`,
	107	linesChanged: missing.length,
	108	});
	109	}
	110	} else if (files.includes("package.json")) {
	111	// No .gitignore at all in a JS project
	112	const newContent = `# Auto-generated by gluecron
	113	node_modules/
	114	dist/
	115	.env
	116	.env.local
	117	.env.*.local
	118	*.log
	119	.DS_Store
	120	coverage/
	121	.cache/
	122	`;
	123	modifications.set(".gitignore", newContent);
	124	repairs.push({
	125	file: ".gitignore",
	126	type: "gitignore",
	127	description: "Created .gitignore with standard entries",
	128	linesChanged: 10,
	129	});
	130	}
	131
	132	// ─── REPAIR 2: Fix trailing whitespace and missing EOF newlines ─
	133
	134	const textExtensions = /\.(ts\|tsx\|js\|jsx\|json\|md\|txt\|yaml\|yml\|toml\|css\|html\|py\|rb\|go\|rs\|java\|sh\|sql)$/;
	135	const textFiles = files.filter((f) => textExtensions.test(f)).slice(0, 50); // Limit to 50 files
	136
	137	for (const filePath of textFiles) {
	138	const { stdout: content, exitCode } = await exec(
	139	["git", "show", `${ref}:${filePath}`],
	140	repoDir
	141	);
	142	if (exitCode !== 0) continue;
	143
	144	let modified = content;
	145	let changes = 0;
	146
	147	// Remove trailing whitespace
	148	const lines = modified.split("\n");
	149	const trimmed = lines.map((line) => {
	150	const trimmedLine = line.replace(/[\t ]+$/, "");
	151	if (trimmedLine !== line) changes++;
	152	return trimmedLine;
	153	});
	154	modified = trimmed.join("\n");
	155
	156	// Ensure file ends with newline
	157	if (modified.length > 0 && !modified.endsWith("\n")) {
	158	modified += "\n";
	159	changes++;
	160	}
	161
	162	if (modified !== content) {
	163	modifications.set(filePath, modified);
	164	repairs.push({
	165	file: filePath,
	166	type: "whitespace",
	167	description: `Fixed ${changes} whitespace issue${changes > 1 ? "s" : ""}`,
	168	linesChanged: changes,
	169	});
	170	}
	171	}
	172
	173	// ─── REPAIR 3: Detect and mask hardcoded secrets ───────────
	174
	175	for (const filePath of textFiles) {
	176	if (filePath.includes("test") \|\| filePath.includes("spec")) continue;
	177	if (filePath.endsWith(".md") \|\| filePath.endsWith(".txt")) continue;
	178
	179	const existing = modifications.get(filePath);
	180	const { stdout: rawContent } = await exec(
	181	["git", "show", `${ref}:${filePath}`],
	182	repoDir
	183	);
	184	const content = existing \|\| rawContent;
	185
	186	let modified = content;
	187	let secretsFound = 0;
	188
	189	// AWS keys
	190	modified = modified.replace(
	191	/((?:AKIA\|AGPA\|AIDA\|AROA\|AIPA\|ANPA\|ANVA\|ASIA)[A-Z0-9]{16})/g,
	192	(match) => {
	193	secretsFound++;
	194	return "process.env.AWS_ACCESS_KEY_ID";
	195	}
	196	);
	197
	198	if (secretsFound > 0 && modified !== content) {
	199	modifications.set(filePath, modified);
	200	repairs.push({
	201	file: filePath,
	202	type: "secret-masking",
	203	description: `Masked ${secretsFound} hardcoded secret${secretsFound > 1 ? "s" : ""}`,
	204	linesChanged: secretsFound,
	205	});
	206	}
	207	}
	208
	209	// ─── REPAIR 4: Fix JSON files ─────────────────────────────
	210
	211	const jsonFiles = files.filter((f) => f.endsWith(".json")).slice(0, 20);
	212	for (const filePath of jsonFiles) {
	213	const existing = modifications.get(filePath);
	214	const { stdout: rawContent } = await exec(
	215	["git", "show", `${ref}:${filePath}`],
	216	repoDir
	217	);
	218	const content = existing \|\| rawContent;
	219
	220	try {
	221	JSON.parse(content);
	222	} catch {
	223	// Try to fix common JSON issues
	224	let fixed = content;
	225	// Remove trailing commas
	226	fixed = fixed.replace(/,(\s*[}\]])/g, "$1");
	227	// Try again
	228	try {
	229	const parsed = JSON.parse(fixed);
	230	const reformatted = JSON.stringify(parsed, null, 2) + "\n";
	231	modifications.set(filePath, reformatted);
	232	repairs.push({
	233	file: filePath,
	234	type: "json-fix",
	235	description: "Fixed JSON syntax (trailing commas, formatting)",
	236	linesChanged: 1,
	237	});
	238	} catch {
	239	// Can't auto-fix this JSON
	240	}
	241	}
	242	}
	243
	244	// ─── COMMIT REPAIRS ────────────────────────────────────────
	245
	246	if (modifications.size === 0) {
	247	return { repaired: false, repairs: [], commitSha: null };
	248	}
	249
	250	// Build new tree with modifications
	251	const { stdout: currentTree } = await exec(
	252	["git", "ls-tree", "-r", ref],
	253	repoDir
	254	);
	255
	256	const treeEntries = currentTree.split("\n").filter(Boolean);
	257	const modifiedPaths = new Set(modifications.keys());
	258	const newEntries: string[] = [];
	259
	260	// Update existing entries
	261	for (const entry of treeEntries) {
	262	const match = entry.match(/^(\d+) (\w+) ([0-9a-f]+)\t(.+)$/);
	263	if (!match) continue;
	264	const [, mode, type, sha, path] = match;
	265
	266	if (modifiedPaths.has(path)) {
	267	const newContent = modifications.get(path)!;
	268	const { stdout: newBlobSha } = await exec(
	269	["git", "hash-object", "-w", "--stdin"],
	270	repoDir,
	271	newContent
	272	);
	273	newEntries.push(`${mode} blob ${newBlobSha}\t${path}`);
	274	modifiedPaths.delete(path);
	275	} else {
	276	newEntries.push(entry);
	277	}
	278	}
	279
	280	// Add new files (like .gitignore if it didn't exist)
	281	for (const path of modifiedPaths) {
	282	const content = modifications.get(path)!;
	283	const { stdout: blobSha } = await exec(
	284	["git", "hash-object", "-w", "--stdin"],
	285	repoDir,
	286	content
	287	);
	288	newEntries.push(`100644 blob ${blobSha}\t${path}`);
	289	}
	290
	291	// Create new tree
	292	const treeInput = newEntries.join("\n") + "\n";
	293	const { stdout: newTreeSha } = await exec(
	294	["git", "mktree"],
	295	repoDir,
	296	treeInput
	297	);
	298
	299	// Get parent
	300	const { stdout: parentSha } = await exec(
	301	["git", "rev-parse", ref],
	302	repoDir
	303	);
	304
	305	// Create commit
	306	const repairSummary = repairs
	307	.map((r) => `- ${r.file}: ${r.description}`)
	308	.join("\n");
	309
	310	const commitMsg = `fix: auto-repair by gluecron\n\n${repairs.length} automatic repair${repairs.length > 1 ? "s" : ""}:\n${repairSummary}\n\nThis commit was created automatically by gluecron's repair engine.`;
	311
	312	const { stdout: commitSha } = await exec(
	313	["git", "commit-tree", newTreeSha, "-p", parentSha, "-m", commitMsg],
	314	repoDir
	315	);
	316
	317	// Update ref
	318	await exec(
	319	["git", "update-ref", `refs/heads/${ref}`, commitSha],
	320	repoDir
	321	);
	322
	323	console.log(
	324	`[autorepair] ${owner}/${repo}@${ref}: ${repairs.length} repairs committed as ${commitSha.slice(0, 7)}`
	325	);
	326
	327	return { repaired: true, repairs, commitSha };
	328	}