31 lines
1.4 KiB
JavaScript
31 lines
1.4 KiB
JavaScript
/**
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* Pure decision logic for the GitHub PR auto-merge safety net
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* (scripts/github-pr-automerge.mjs). Unit-tested in
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* tests/unit/githubPrFlow.unit.spec.ts — the OPS57 (draft veto) / OPS64
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* (never merge on red CI) pins ported to the GitHub mechanism.
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*
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* GitHub's native auto-merge only fires with the required checks green, so
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* the safety net's only real decisions are: skip (non-main base, draft veto,
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* already merged) or mark-ready (cursor/* draft) before arming auto-merge.
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*/
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export const CURSOR_HEAD_PREFIX = 'cursor/'
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/** OPS57: only `cursor/*` drafts get force-marked ready — any other draft is the actor's veto. */
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export const isCursorHead = (ref) => typeof ref === 'string' && ref.startsWith(CURSOR_HEAD_PREFIX)
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/**
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* @param {object|null} pr - normalized PR from github-api (or null)
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* @returns {{ action: 'skip' | 'mark-ready' | 'enable-auto-merge', reason: string }}
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*/
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export const decideAutomergeAction = (pr) => {
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if (!pr) return { action: 'skip', reason: 'pr-inexistente' }
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if (pr.merged) return { action: 'skip', reason: 'ja-mergeada' }
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if (pr.state !== 'OPEN') return { action: 'skip', reason: 'pr-nao-aberta' }
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if (pr.base?.ref !== 'main') return { action: 'skip', reason: 'base-nao-main' }
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if (pr.draft) {
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if (isCursorHead(pr.head?.ref)) return { action: 'mark-ready', reason: 'draft-cursor' }
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return { action: 'skip', reason: 'draft-veto' }
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}
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return { action: 'enable-auto-merge', reason: 'ready' }
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}
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