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refactor(cli): resolve the model ID through the provider definitions - #2192
There was a duplicate getModelId(...) in CLI, this PR removes the duplication.
Pre-Submission Checklist
[n/a] Issue Linked: This PR is linked to an approved GitHub Issue (see "Related GitHub Issue" above).
Scope: My changes are focused on the linked issue (one major feature/fix per PR).
Self-Review: I reviewed my own code with care.
Writing Style: The PR title and description use Simplified Technical English (ASD-STE100): short sentences, plain words, active voice, one idea per sentence, no contractions.
Testing: New and/or updated tests have been added to cover my changes (if applicable).
[n/a] Visual Snapshot (UI changes only): If a user would notice this change at a glance (layout, theme tokens, brand elements, empty/error states), I added or updated a *.visual.tsx snapshot in webview-ui/. See webview-ui/AGENTS.md → "When a UI change needs a snapshot".
[n/a] Documentation Impact: I checked if my changes need documentation updates (see "Documentation Updates" section below).
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Recent review details
Additional context used
Path-based instructions: 3
Require regression coverage at the lowest valid harness with behavior-focused assertions, including relevant negative, error, false/unset, and boundary cases.
Also applies to: 27-42, 44-80, 123-131, 133-135, 137-144, 146-153, 156-158
📝 Summary
Summary by CodeRabbit
Bug Fixes
Context-window detection now follows the selected model more consistently across supported providers, including VS Code language models.
A safe default is used when the selected model or required configuration is unavailable, including cases involving retired provider configurations.
Listed models from retired provider configurations can still resolve to their configured context window.
getContextWindow now uses the shared getModelId utility to select a model. Tests cover provider-specific model selection, VS Code LM selector precedence, and default context-window results when model or configuration data is unavailable.
Changes: Context window model selection
Layer / File(s)
Summary
Use shared model ID selection apps/cli/src/lib/utils/context-window.ts, apps/cli/src/lib/utils/__tests__/context-window.test.ts
getContextWindow now uses getModelId instead of a local provider-specific resolver. Tests cover provider model fields, VS Code LM selector precedence, and default results when model or configuration data is unavailable.
No actionable merge-blocking risk was established for the model-selection change. It is ready for normal checks before merge.
Pre-merge checks: 6 · 2
Failed checks: 2 warnings
Check name
Status
Explanation
Resolution
Description check
The description explains the refactor and includes a checklist, but it does not link an approved GitHub Issue and omits the required Test Procedure, Documentation Updates, and Additional Notes section…
Link an approved GitHub Issue, add the required Test Procedure with reproducible test steps and environment details, and complete the remaining template sections, including Documentation Updates and Additional Notes where applicable.
Regression Evidence
The refactor changes getContextWindow for VS Code LM when apiModelId is set without vsCodeLmModelSelector: the base helper returned apiModelId, while the new shared getModelId returns only `…
Add a focused getContextWindow test for providerIdentifiers.vscodeLm with apiModelId set and no vsCodeLmModelSelector. Put that model in routerModels and assert the intended result, likely DEFAULT_CONTEXT_WINDOW if provider defi…
Passed checks: 6 passed
Check name
Status
Explanation
Title check
The title clearly and concisely describes the main change: resolving the model ID through provider definitions.
Linked Issues check
Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check
Check skipped because no linked issues were found for this pull request.
Security Boundaries
No changed path meets the security failure condition. apps/cli/src/lib/utils/context-window.ts:14-29 only resolves a provider model ID, reads routerModels, and returns a numeric context-window val…
Persistence Integrity
PASS. The pull request changes only context-window resolution and its tests. getContextWindow reads routerModels and ProviderSettings, then returns a value or an in-memory fallback. The imported…
Lifecycle Resource Cleanup
PASS. The pull request changes only context-window model lookup and its tests. The changed path calls the synchronous getModelId accessor and performs an in-memory lookup; it does not create or mana…
Full details: Security Boundaries
Explanation
No changed path meets the security failure condition. apps/cli/src/lib/utils/context-window.ts:14-29 only resolves a provider model ID, reads routerModels, and returns a numeric context-window value. The new getModelId path dispatches known provider definitions or retired-provider identifiers (packages/types/src/provider-settings.ts:349-359); it does not expose secrets or PII, execute input, or bypass approval or allowlist controls.
Full details: Persistence Integrity
Explanation
PASS. The pull request changes only context-window resolution and its tests. getContextWindow reads routerModels and ProviderSettings, then returns a value or an in-memory fallback. The imported getModelId also only reads provider settings. No persistence, write, rollback, or default-propagation path changed.
Full details: Lifecycle Resource Cleanup
Explanation
PASS. The pull request changes only context-window model lookup and its tests. The changed path calls the synchronous getModelId accessor and performs an in-memory lookup; it does not create or manage listeners, watchers, timers, tasks, subscriptions, or other resources. No cancellation, disposal, restart, or duplicate-work path was introduced.
Full details: Description check
Explanation
The description explains the refactor and includes a checklist, but it does not link an approved GitHub Issue and omits the required Test Procedure, Documentation Updates, and Additional Notes sections.
Resolution
Link an approved GitHub Issue, add the required Test Procedure with reproducible test steps and environment details, and complete the remaining template sections, including Documentation Updates and Additional Notes where applicable.
Full details: Regression Evidence
Explanation
The refactor changes getContextWindow for VS Code LM when apiModelId is set without vsCodeLmModelSelector: the base helper returned apiModelId, while the new shared getModelId returns only vsCodeLmModelSelector?.id. The changed tests cover selector-present cases, but no focused CLI test covers this unset-selector fallback or asserts the intended default behavior. The existing no-selector case covers GitHub Copilot only.
Resolution
Add a focused getContextWindow test for providerIdentifiers.vscodeLm with apiModelId set and no vsCodeLmModelSelector. Put that model in routerModels and assert the intended result, likely DEFAULT_CONTEXT_WINDOW if provider definitions are authoritative. Add a selector-without-id case for VS Code LM if that persisted state is supported.
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Actionable comments posted: 1
🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @apps/cli/src/lib/utils/__tests__/context-window.test.ts:
- Around line 123-125: Update the unavailable-model test to provide router
metadata for a different model and configure a missing selected model, so it
exercises the model lookup fallback. Rename the retired-provider test to state
that it covers unavailable router models for a retired provider, matching its
existing fixture and behavior.
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Review details
Context from checks skipped due to timeout: 3
GitHub Check: platform-unit-test (windows-latest)
GitHub Check: compile
GitHub Check: e2e-mock
Additional context used
Path-based instructions: 3
Require regression coverage at the lowest valid harness with behavior-focused assertions, including relevant negative, error, false/unset, and boundary cases.
getContextWindow carried its own switch mapping each provider to the
settings field holding its model ID. That duplicated the per-provider
accessors in @roo-code/types and had to be updated by hand whenever a
provider was added.
Call the canonical getModelId() instead, which dispatches to each
provider definition's accessor, and drop the switch.
Cover the shared apiModelId providers, VS Code LM selectors, cross-
provider field isolation, retired providers, and missing inputs.
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Would this test catch a regression where getContextWindow falls back to apiModelId when the selector has no id, for example getModelId(config) ?? config.apiModelId? Here the selector id is set, so the fallback never runs. A case with apiModelId set and no selector, expecting DEFAULT_CONTEXT_WINDOW, would pin the behavior this PR changes for vscodeLm.
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Related GitHub Issue
No issue, simple refactor.
Description
There was a duplicate getModelId(...) in CLI, this PR removes the duplication.
Pre-Submission Checklist
*.visual.tsxsnapshot inwebview-ui/. Seewebview-ui/AGENTS.md→ "When a UI change needs a snapshot".