Data-Tier Application Feature

[allancascante]

Description

Adding support to import/export/deploy/extract dacpac and bacpac files as it was possible in ADS.

1. It allows to launch dacpac/bacpac import from OE or from command palette.

2. Shows a form to select the operation to use (import/export/deploy/extract) the server database and file, respective to the selected operation.

3. Performs the selected operation if all information is valid.

Code Changes Checklist

• New or updated unit tests added
• All existing tests pass (npm run test)
• Code follows contributing guidelines
• Telemetry/logging updated if relevant
• No regressions or UX breakage

Reviewers: Please read our reviewer guidelines

[Copilot]

Pull Request Overview

This PR adds comprehensive support for Data-Tier Application operations (import/export/deploy/extract dacpac and bacpac files), replicating functionality previously available in Azure Data Studio. The feature enables users to launch these operations from the Object Explorer or command palette through a webview interface that guides them through selecting the operation type, server connection, database, and file paths.

Key Changes:

• New webview-based UI for managing dacpac/bacpac operations
• Command registration for all four operation types (deploy, extract, import, export)
• Validation logic for file paths, database names, and connections
• Support for both new and existing database deployments with confirmation dialogs

Reviewed Changes

Copilot reviewed 18 out of 19 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/controllers/dataTierApplicationWebviewController.ts	New controller managing webview RPC handlers for all data-tier operations
src/reactviews/pages/DataTierApplication/dataTierApplicationForm.tsx	React form component implementing the UI for operation configuration
src/sharedInterfaces/dataTierApplication.ts	TypeScript interfaces and RPC request/notification types
src/services/dacFxService.ts	Updated to accept optional application name/version parameters
test/unit/dataTierApplicationWebviewController.test.ts	Comprehensive unit tests covering all operation workflows
src/controllers/mainController.ts	Command registration for data-tier application operations
package.json, package.nls.json	Command definitions and localization keys
Localization files	Translated strings for the new feature

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

[nitpick] The localization key 'databaseAlreadyExists' is defined in both the dataTierApplication getter (line 1117) and appears to be duplicated in package.nls.json. While the values match, consider documenting whether this duplication is intentional for different contexts or if they should reference a shared constant.

Suggested change

	deployToExistingConfirm: l10n.t("Deploy"),
	deployToExistingConfirm: l10n.t("Deploy"),
	// Note: The localization key 'databaseAlreadyExists' is also defined in package.nls.json.
	// This duplication is currently intentional to support both VS Code extension and in-app localization.

[Copilot]

[nitpick] The type annotation '(typeof mockConnections)[0]' is verbose and could be simplified by extracting a type alias for the connection object structure, improving readability and maintainability across multiple test cases that use similar patterns.