# OAuth2 Provider Code Reorganization
This PR reorganizes the OAuth2 provider code to improve separation of concerns and maintainability. The changes include:
1. Migrating OAuth2 provider app validation tests from `coderd/oauth2_test.go` to `oauth2provider/provider_test.go`
2. Moving OAuth2 client registration validation tests to `oauth2provider/validation_test.go`
3. Adding new comprehensive test files for metadata and validation edge cases
4. Renaming `OAuth2ProviderAppSecret` to `AppSecret` for better naming consistency
5. Simplifying the main integration test in `oauth2_test.go` to focus on core functionality
The PR maintains all existing test coverage while organizing the code more logically, making it easier to understand and maintain the OAuth2 provider implementation. This reorganization will help with future enhancements to the OAuth2 provider functionality.
# Refactor OAuth2 Provider Code into Dedicated Package
This PR refactors the OAuth2 provider functionality by moving it from the main `coderd` package into a dedicated `oauth2provider` package. The change improves code organization and maintainability without changing functionality.
Key changes:
- Created a new `oauth2provider` package to house all OAuth2 provider-related code
- Moved existing OAuth2 provider functionality from `coderd/identityprovider` to the new package
- Refactored handler functions to follow a consistent pattern of returning `http.HandlerFunc` instead of being handlers directly
- Split large files into smaller, more focused files organized by functionality:
- `app_secrets.go` - Manages OAuth2 application secrets
- `apps.go` - Handles OAuth2 application CRUD operations
- `authorize.go` - Implements the authorization flow
- `metadata.go` - Provides OAuth2 metadata endpoints
- `registration.go` - Handles dynamic client registration
- `revoke.go` - Implements token revocation
- `secrets.go` - Manages secret generation and validation
- `tokens.go` - Handles token issuance and validation
This refactoring improves code organization and makes the OAuth2 provider functionality more maintainable while preserving all existing behavior.
