|
|
@@ -0,0 +1,298 @@
|
|
|
+#!/usr/bin/env node
|
|
|
+
|
|
|
+import { readFileSync } from 'node:fs'
|
|
|
+import process from 'node:process'
|
|
|
+import { pathToFileURL } from 'node:url'
|
|
|
+
|
|
|
+const API_VERSION = '2026-03-10'
|
|
|
+const MAX_PULL_REQUEST_REVIEWS = 3_000
|
|
|
+const PAGE_SIZE = 100
|
|
|
+const STATUS_CONTEXT = 'weighted approval'
|
|
|
+const STATUS_PREFIX = 'This is by automated Angry Turtle Cyborg, not a human'
|
|
|
+const WRITABLE_PERMISSIONS = new Set(['admin', 'write'])
|
|
|
+const REVIEW_STATES = new Set(['APPROVED', 'CHANGES_REQUESTED', 'COMMENTED', 'DISMISSED', 'PENDING'])
|
|
|
+const LOGIN = /^[A-Za-z0-9-]+(?:\[bot\])?$/u
|
|
|
+
|
|
|
+/**
|
|
|
+ * Parse the approval score policy.
|
|
|
+ * @param {string} source Approval policy JSON.
|
|
|
+ * @returns {{requiredPoints: number, defaultPoints: number, reviewerPoints: Map<string, number>}} Validated policy.
|
|
|
+ */
|
|
|
+export function parseApprovalPolicy(source) {
|
|
|
+ const value = JSON.parse(source)
|
|
|
+ if (!isRecord(value)) throw new Error('approval policy must be an object')
|
|
|
+ const fields = Object.keys(value).sort()
|
|
|
+ if (fields.join(',') !== 'defaultPoints,requiredPoints,reviewerPoints') {
|
|
|
+ throw new Error('approval policy must contain only defaultPoints, requiredPoints, and reviewerPoints')
|
|
|
+ }
|
|
|
+ const requiredPoints = positiveInteger(value.requiredPoints, 'requiredPoints')
|
|
|
+ const defaultPoints = positiveInteger(value.defaultPoints, 'defaultPoints')
|
|
|
+ if (!isRecord(value.reviewerPoints)) throw new Error('reviewerPoints must be an object')
|
|
|
+ const reviewerPoints = new Map()
|
|
|
+ for (const [login, pointsValue] of Object.entries(value.reviewerPoints)) {
|
|
|
+ validateLogin(login, 'approval policy reviewer')
|
|
|
+ const key = login.toLowerCase()
|
|
|
+ if (reviewerPoints.has(key)) throw new Error(`duplicate approval policy reviewer @${login}`)
|
|
|
+ reviewerPoints.set(key, positiveInteger(pointsValue, `reviewerPoints.${login}`))
|
|
|
+ }
|
|
|
+ return { requiredPoints, defaultPoints, reviewerPoints }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Select each reviewer's latest non-comment review decision.
|
|
|
+ * @param {unknown[]} reviews Pull-request review records in GitHub's chronological order.
|
|
|
+ * @returns {Array<{login: string, state: 'APPROVED' | 'CHANGES_REQUESTED'}>} Effective review decisions.
|
|
|
+ */
|
|
|
+export function effectiveReviewDecisions(reviews) {
|
|
|
+ const decisions = new Map()
|
|
|
+ for (const review of reviews) {
|
|
|
+ if (!isRecord(review) || !isRecord(review.user) || typeof review.user.login !== 'string') {
|
|
|
+ throw new Error('pull-request review has no reviewer login')
|
|
|
+ }
|
|
|
+ const login = validateLogin(review.user.login, 'pull-request reviewer')
|
|
|
+ if (typeof review.state !== 'string' || !REVIEW_STATES.has(review.state.toUpperCase())) {
|
|
|
+ throw new Error(`pull-request review by @${login} has an invalid state`)
|
|
|
+ }
|
|
|
+ const state = review.state.toUpperCase()
|
|
|
+ if (state === 'APPROVED' || state === 'CHANGES_REQUESTED') {
|
|
|
+ decisions.set(login.toLowerCase(), { login, state })
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return [...decisions.values()]
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Create a repository-scoped GitHub JSON API caller.
|
|
|
+ * @param {{token: string, apiUrl?: string, fetchImpl?: typeof fetch}} options API dependencies.
|
|
|
+ * @returns {(path: string, options?: {method?: string, body?: unknown}) => Promise<unknown>} API caller.
|
|
|
+ */
|
|
|
+export function createGitHubApi({ token, apiUrl = 'https://api.github.com', fetchImpl = globalThis.fetch }) {
|
|
|
+ if (!token) throw new Error('GITHUB_TOKEN is not set')
|
|
|
+ if (typeof fetchImpl !== 'function') throw new Error('fetch is unavailable')
|
|
|
+ const root = apiUrl.replace(/\/+$/u, '')
|
|
|
+ return async (path, { method = 'GET', body } = {}) => {
|
|
|
+ const response = await fetchImpl(`${root}${path}`, {
|
|
|
+ method,
|
|
|
+ headers: {
|
|
|
+ Accept: 'application/vnd.github+json',
|
|
|
+ Authorization: `Bearer ${token}`,
|
|
|
+ 'Content-Type': 'application/json',
|
|
|
+ 'User-Agent': 'deepseek-harness-weighted-approval',
|
|
|
+ 'X-GitHub-Api-Version': API_VERSION,
|
|
|
+ },
|
|
|
+ ...(body === undefined ? {} : { body: JSON.stringify(body) }),
|
|
|
+ })
|
|
|
+ if (!response.ok) {
|
|
|
+ const responseBody = await response.text()
|
|
|
+ throw new Error(`GitHub API ${method} ${path} returned ${response.status}: ${JSON.stringify(responseBody)}`)
|
|
|
+ }
|
|
|
+ if (response.status === 204) return undefined
|
|
|
+ return response.json()
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Fetch every pull-request review or fail before scoring a partial list.
|
|
|
+ * @param {(path: string, options?: {method?: string, body?: unknown}) => Promise<unknown>} api GitHub API caller.
|
|
|
+ * @param {string} repository Owner/name repository identifier.
|
|
|
+ * @param {number} pullNumber Pull-request number.
|
|
|
+ * @returns {Promise<unknown[]>} Complete review list within the supported limit.
|
|
|
+ */
|
|
|
+export async function listPullRequestReviews(api, repository, pullNumber) {
|
|
|
+ const reviews = []
|
|
|
+ for (let page = 1; ; page++) {
|
|
|
+ const response = await api(`/repos/${repository}/pulls/${pullNumber}/reviews?per_page=${PAGE_SIZE}&page=${page}`)
|
|
|
+ if (!Array.isArray(response)) throw new Error('pull-request reviews response is not an array')
|
|
|
+ reviews.push(...response)
|
|
|
+ if (response.length < PAGE_SIZE) return reviews
|
|
|
+ if (reviews.length >= MAX_PULL_REQUEST_REVIEWS) {
|
|
|
+ throw new Error(`pull-request reviews exceed ${MAX_PULL_REQUEST_REVIEWS} records`)
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Evaluate approval points from current reviews and repository permissions.
|
|
|
+ * @param {{event: unknown, policySource: string, api: (path: string, options?: {method?: string, body?: unknown}) => Promise<unknown>}} options Runtime inputs.
|
|
|
+ * @returns {Promise<{pull: {repository: string, number: number, headSha: string}, state: 'failure' | 'pending' | 'success', description: string, points: number, requiredPoints: number, approvals: Array<{login: string, points: number}>, blockers: string[], ignoredReviewers: string[]}>} Approval decision and status payload fields.
|
|
|
+ */
|
|
|
+export async function evaluateApproval({ event, policySource, api }) {
|
|
|
+ const pull = pullRequestFromEvent(event)
|
|
|
+ const policy = parseApprovalPolicy(policySource)
|
|
|
+ if (pull.draft) {
|
|
|
+ return approvalResult(pull, policy.requiredPoints, [], [], [], 'pending', 'draft pull request')
|
|
|
+ }
|
|
|
+
|
|
|
+ const reviews = await listPullRequestReviews(api, pull.repository, pull.number)
|
|
|
+ const decisions = effectiveReviewDecisions(reviews)
|
|
|
+ .filter(({ login }) => login.toLowerCase() !== pull.author.toLowerCase())
|
|
|
+ const permissions = []
|
|
|
+ for (const { login, state } of decisions) {
|
|
|
+ permissions.push({ login, state, permission: await reviewerPermission(api, pull.repository, login) })
|
|
|
+ }
|
|
|
+ const approvals = []
|
|
|
+ const blockers = []
|
|
|
+ const ignoredReviewers = []
|
|
|
+ for (const { login, state, permission } of permissions) {
|
|
|
+ if (!WRITABLE_PERMISSIONS.has(permission)) {
|
|
|
+ ignoredReviewers.push(login)
|
|
|
+ } else if (state === 'CHANGES_REQUESTED') {
|
|
|
+ blockers.push(login)
|
|
|
+ } else {
|
|
|
+ approvals.push({
|
|
|
+ login,
|
|
|
+ points: policy.reviewerPoints.get(login.toLowerCase()) ?? policy.defaultPoints,
|
|
|
+ })
|
|
|
+ }
|
|
|
+ }
|
|
|
+ approvals.sort((left, right) => left.login.localeCompare(right.login, 'en'))
|
|
|
+ blockers.sort((left, right) => left.localeCompare(right, 'en'))
|
|
|
+ ignoredReviewers.sort((left, right) => left.localeCompare(right, 'en'))
|
|
|
+ const points = approvals.reduce((total, approval) => {
|
|
|
+ const next = total + approval.points
|
|
|
+ if (!Number.isSafeInteger(next)) throw new Error('approval points exceed the safe integer range')
|
|
|
+ return next
|
|
|
+ }, 0)
|
|
|
+ if (blockers.length > 0) {
|
|
|
+ return approvalResult(pull, policy.requiredPoints, approvals, blockers, ignoredReviewers, 'failure',
|
|
|
+ `${blockers.length} blocking change request${blockers.length === 1 ? '' : 's'}`)
|
|
|
+ }
|
|
|
+ const state = points >= policy.requiredPoints ? 'success' : 'pending'
|
|
|
+ return approvalResult(
|
|
|
+ pull,
|
|
|
+ policy.requiredPoints,
|
|
|
+ approvals,
|
|
|
+ blockers,
|
|
|
+ ignoredReviewers,
|
|
|
+ state,
|
|
|
+ `${points}/${policy.requiredPoints} approval points`,
|
|
|
+ )
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Evaluate and publish the required commit status, publishing an error status when evaluation fails.
|
|
|
+ * @param {{event: unknown, policySource: string, api: (path: string, options?: {method?: string, body?: unknown}) => Promise<unknown>, runUrl: string, write?: (line: string) => void}} options Runtime inputs.
|
|
|
+ * @returns {Promise<Awaited<ReturnType<typeof evaluateApproval>>>} Published approval decision.
|
|
|
+ */
|
|
|
+export async function runApprovalCheck({ event, policySource, api, runUrl, write = line => process.stdout.write(`${line}\n`) }) {
|
|
|
+ const pull = pullRequestFromEvent(event)
|
|
|
+ write(STATUS_PREFIX)
|
|
|
+ let result
|
|
|
+ try {
|
|
|
+ result = await evaluateApproval({ event, policySource, api })
|
|
|
+ } catch (error) {
|
|
|
+ await publishStatus(api, pull, 'error', `${STATUS_PREFIX}: approval evaluation failed.`, runUrl)
|
|
|
+ throw error
|
|
|
+ }
|
|
|
+ write(`Approval score: ${result.points}/${result.requiredPoints}.`)
|
|
|
+ writeList(write, 'Counted approvals', result.approvals.map(({ login, points }) => `@${login}: ${points}`))
|
|
|
+ writeList(write, 'Blocking change requests', result.blockers.map(login => `@${login}`))
|
|
|
+ writeList(write, 'Ignored reviewers without write access', result.ignoredReviewers.map(login => `@${login}`))
|
|
|
+ await publishStatus(api, pull, result.state, result.description, runUrl)
|
|
|
+ write(`Published ${JSON.stringify(STATUS_CONTEXT)} status ${JSON.stringify(result.state)}.`)
|
|
|
+ return result
|
|
|
+}
|
|
|
+
|
|
|
+function approvalResult(pull, requiredPoints, approvals, blockers, ignoredReviewers, state, detail) {
|
|
|
+ return {
|
|
|
+ pull: { repository: pull.repository, number: pull.number, headSha: pull.headSha },
|
|
|
+ state,
|
|
|
+ description: `${STATUS_PREFIX}: ${detail}.`,
|
|
|
+ points: approvals.reduce((total, approval) => total + approval.points, 0),
|
|
|
+ requiredPoints,
|
|
|
+ approvals,
|
|
|
+ blockers,
|
|
|
+ ignoredReviewers,
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+async function reviewerPermission(api, repository, login) {
|
|
|
+ const response = await api(`/repos/${repository}/collaborators/${encodeURIComponent(login)}/permission`)
|
|
|
+ if (!isRecord(response) || typeof response.permission !== 'string') {
|
|
|
+ throw new Error(`collaborator permission response for @${login} has no permission`)
|
|
|
+ }
|
|
|
+ return response.permission.toLowerCase()
|
|
|
+}
|
|
|
+
|
|
|
+async function publishStatus(api, pull, state, description, runUrl) {
|
|
|
+ if (!/^https:\/\/[^\s]+$/u.test(runUrl)) throw new Error('workflow run URL must use HTTPS')
|
|
|
+ if (description.length > 140) throw new Error('commit status description exceeds 140 characters')
|
|
|
+ await api(`/repos/${pull.repository}/statuses/${pull.headSha}`, {
|
|
|
+ method: 'POST',
|
|
|
+ body: {
|
|
|
+ state,
|
|
|
+ context: STATUS_CONTEXT,
|
|
|
+ description,
|
|
|
+ target_url: runUrl,
|
|
|
+ },
|
|
|
+ })
|
|
|
+}
|
|
|
+
|
|
|
+function pullRequestFromEvent(event) {
|
|
|
+ if (!isRecord(event) || !isRecord(event.repository) || typeof event.repository.full_name !== 'string'
|
|
|
+ || !/^[A-Za-z0-9_.-]+\/[A-Za-z0-9_.-]+$/u.test(event.repository.full_name)) {
|
|
|
+ throw new Error('event has no valid repository.full_name')
|
|
|
+ }
|
|
|
+ if (!isRecord(event.pull_request) || !isRecord(event.pull_request.user)
|
|
|
+ || !isRecord(event.pull_request.head)) {
|
|
|
+ throw new Error('event has no pull_request')
|
|
|
+ }
|
|
|
+ const pull = event.pull_request
|
|
|
+ if (!Number.isSafeInteger(pull.number) || pull.number <= 0) throw new Error('pull request has no valid number')
|
|
|
+ if (typeof pull.draft !== 'boolean') throw new Error('pull request has no draft flag')
|
|
|
+ const author = validateLogin(pull.user.login, 'pull-request author')
|
|
|
+ if (typeof pull.head.sha !== 'string' || !/^[0-9a-f]{40}$/u.test(pull.head.sha)) {
|
|
|
+ throw new Error('pull request has no valid head SHA')
|
|
|
+ }
|
|
|
+ return {
|
|
|
+ repository: event.repository.full_name,
|
|
|
+ number: pull.number,
|
|
|
+ draft: pull.draft,
|
|
|
+ author,
|
|
|
+ headSha: pull.head.sha,
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+function positiveInteger(value, field) {
|
|
|
+ if (!Number.isSafeInteger(value) || value <= 0) throw new Error(`${field} must be a positive integer`)
|
|
|
+ return value
|
|
|
+}
|
|
|
+
|
|
|
+function validateLogin(value, subject) {
|
|
|
+ if (typeof value !== 'string' || !LOGIN.test(value)) throw new Error(`${subject} has an invalid login`)
|
|
|
+ return value
|
|
|
+}
|
|
|
+
|
|
|
+function writeList(write, title, entries) {
|
|
|
+ write(`${title}:`)
|
|
|
+ if (entries.length === 0) write('- (none)')
|
|
|
+ else for (const entry of entries) write(`- ${entry}`)
|
|
|
+}
|
|
|
+
|
|
|
+function isRecord(value) {
|
|
|
+ return typeof value === 'object' && value !== null && !Array.isArray(value)
|
|
|
+}
|
|
|
+
|
|
|
+async function main() {
|
|
|
+ const eventPath = process.env.GITHUB_EVENT_PATH
|
|
|
+ if (!eventPath) throw new Error('GITHUB_EVENT_PATH is not set')
|
|
|
+ const event = JSON.parse(readFileSync(eventPath, 'utf8'))
|
|
|
+ const policySource = readFileSync(new URL('approval-policy.json', import.meta.url), 'utf8')
|
|
|
+ const api = createGitHubApi({
|
|
|
+ token: process.env.GITHUB_TOKEN ?? '',
|
|
|
+ apiUrl: process.env.GITHUB_API_URL,
|
|
|
+ })
|
|
|
+ await runApprovalCheck({
|
|
|
+ event,
|
|
|
+ policySource,
|
|
|
+ api,
|
|
|
+ runUrl: process.env.GITHUB_RUN_URL ?? '',
|
|
|
+ })
|
|
|
+}
|
|
|
+
|
|
|
+if (process.argv[1] && import.meta.url === pathToFileURL(process.argv[1]).href) {
|
|
|
+ main().catch((error) => {
|
|
|
+ process.stderr.write(`weighted approval failed: ${error instanceof Error ? error.message : String(error)}\n`)
|
|
|
+ process.exitCode = 1
|
|
|
+ })
|
|
|
+}
|
Turtle