fix(hooks): correct Factory Droid hooks file shape#2320
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CI update: the external-contributor policy allows at most two concurrent open PRs. PR #2322 was temporarily closed, leaving only these two open. The branch has also been updated with the CI fixes discovered in the first run. |
dyoshikawa
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dyoshikawa
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Thanks for the PR, but I don't think we can take this change as-is. The core premise looks incorrect: the official Factory docs (https://docs.factory.ai/reference/hooks-reference, "Structure" section) show .factory/hooks.json wrapping the event map in a top-level "hooks" key — the exact shape main already emits — and the docs also say Droid falls back to the hooks key in settings.json when hooks.json is absent. Even issue #2317's own "Expected output" uses the nested shape. With this PR, Droid would find no hooks key in the generated file and no hook would ever fire. If you have a doc or Droid release note showing the flat shape is now the accepted format, please link it, because everything I can find says otherwise.
Separately, the issue #2317 symptoms (dropped command field, trailing comma producing invalid JSON) can't actually be produced by the current code path — output goes through JSON.stringify, which never emits trailing commas, and existing tests already assert the command field survives overrides. So even if we kept this PR, it wouldn't be what fixes #2317. There are a couple of mechanical issues flagged inline as well (stale-key merge behavior, the weakened e2e assertion, and forDeletion still emitting the nested shape this PR declares wrong).
My suggestion would be to close this one unless there's evidence the flat shape is correct. One genuinely real nearby bug we did confirm while verifying: absolute hook commands like /tmp/notify.sh get mangled to "$FACTORY_PROJECT_DIR"//tmp/notify.sh by the prefix logic in tool-hooks-converter.ts — that's pre-existing on main and would make a good separate fix if you're interested.
| logger, | ||
| }); | ||
| const merged = { ...settings, hooks: factorydroidHooks }; | ||
| const merged = { ...settings, ...factorydroidHooks }; |
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This is the crux: the Factory hooks reference documents hooks.json as { "hooks": { "EventName": [...] } } — nested under a top-level hooks key, same as what main emits today. Flattening the events to the top level produces a file Droid won't load. Also, switching from hooks: factorydroidHooks (wholesale replacement of the key we own) to a spread means stale event keys from previous generations are never removed — deleting a hook from .rulesync/hooks.jsonc and regenerating leaves the removed event behind, and a file generated by current rulesync keeps its old nested hooks block forever alongside the new top-level keys.
| @@ -139,7 +139,7 @@ export class FactorydroidHooks extends ToolHooks { | |||
| ); | |||
| } | |||
| const hooks = toolHooksToCanonical({ | |||
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parsed.hooks ?? parsed prefers a leftover legacy hooks block over the top-level events. Combined with the spread-merge above, regenerating over a v14-format file leaves both shapes in the file, and import then silently canonicalizes the stale nested block instead of the fresh top-level one.
| expect(parsed.hooks).toBeDefined(); | ||
| const serialized = JSON.stringify(parsed.hooks); | ||
| function assertHookCommandsPreserved(parsed: { hooks?: unknown }, rootIsHooks = false): void { | ||
| const hooks = rootIsHooks ? parsed : parsed.hooks; |
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With rootIsHooks = true this assertion becomes near-vacuous: expect(hooks).toBeDefined() is trivially true for any parsed object, and stringifying the whole file then grepping for the command substrings passes regardless of the file's structure. That's how the shape change sailed through the e2e matrix green. The e2e check should pin the documented shape (e.g. assert parsed.hooks.SessionStart exists) rather than degrade to a whole-file substring match.
| }); | ||
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| const parsed = JSON.parse(factorydroidHooks.getFileContent()); | ||
| expect(parsed).toEqual({ |
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This test doesn't reproduce issue #2317: the issue used an absolute command (/tmp/notify.sh), which the prefix logic in tool-hooks-converter.ts mangles into "$FACTORY_PROJECT_DIR"//tmp/notify.sh — a real pre-existing bug this PR doesn't touch. Substituting a relative path here sidesteps the actual repro. Also note forDeletion and the fromFile fallback in factorydroid-hooks.ts still emit {"hooks": {}}, which contradicts the flat shape this PR introduces.
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Thanks for the contribution, but I'm closing this PR because it changes the generated The official Factory hooks reference (https://docs.factory.ai/reference/hooks-reference) documents {
"hooks": {
"UserPromptSubmit": [
{ "hooks": [{ "type": "command", "command": "..." }] }
]
}
}That is exactly what rulesync currently generates. This PR flattens the event map to the top level of the file ( Additionally, the underlying issue #2317 does not reproduce on Closing along with #2317. |
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Summary
.factory/hooks.jsonas the native event map instead of nesting it under a settings-stylehookskey.factory/settings.jsonimport compatibilityTest plan
pnpm checkpnpm exec vitest run src/features/hooks/factorydroid-hooks.test.ts src/features/hooks/hooks-processor.test.tspnpm test— 323 files, 7,268 tests passedCloses #2317.