Add extensible bookmark import interface with UI for multiple import formats

[Copilot]

Creates a pluggable import system for bookmarks from various sources (CSV, Chrome, Firefox) with a dynamic Settings UI that allows users to import from different formats.

Interface Design

BookmarkImporter - Base interface all importers implement:

• import(uri: Uri): RequestResult<ImportResult> - Parse and import bookmarks
• getDisplayName(): String - UI display name
• getSupportedMimeTypes(): Array<String> - File type filters

Implementations

• CsvBookmarkImporter - Refactored existing CSV logic, maintains backward compatibility
• HtmlBookmarkImporter - Abstract base using JSoup, handles common HTML bookmark parsing
• ChromeBookmarkImporter - Chrome/Chromium HTML export format with folder structure
• MozillaBookmarkImporter - Firefox HTML export, filters special folders

Repository & ViewModel Updates

interface ImportRepository {
    suspend fun importFromCsv(uri: Uri): RequestResult<ImportResult>  // Existing
    fun getAvailableImporters(): List<BookmarkImporter>                // New
    suspend fun importBookmarks(uri: Uri, importer: BookmarkImporter): RequestResult<ImportResult>  // New
}

ImportRepositoryImpl uses composition pattern with individual importers, delegating CSV import to CsvBookmarkImporter.import().

Added importBookmarks() and getAvailableImporters() methods to AccountViewModel to support the UI integration.

Settings UI Updates

The Settings screen now dynamically displays import options for all available importers:

Import & Export section includes:

• 📥 Import from CSV
• 📥 Import from Chrome Bookmarks
• 📥 Import from Mozilla/Firefox Bookmarks
• 📤 Export links (unchanged)

Each import option:

• Opens a file picker with appropriate MIME type filters
• Shows progress messages specific to the import type
• Reports import results with counts of added and skipped bookmarks

The UI automatically generates options based on registered importers, making it extensible for future import formats.

Extension Pattern

Adding new formats requires implementing the interface and registering in ImportRepositoryImpl:

class SafariBookmarkImporter(context: Context, deeprQueries: DeeprQueries) : BookmarkImporter {
    override suspend fun import(uri: Uri) = /* parse Safari bookmarks */
    override fun getDisplayName() = "Safari Bookmarks"
    override fun getSupportedMimeTypes() = arrayOf("text/html")
}

Future candidates: Safari, Edge, JSON formats, Pocket/Instapaper integration.

Code Quality

• ✅ All ktlint checks pass
• ✅ Code review completed with no issues
• ✅ Security scan (CodeQL) passed
• ✅ Unit tests added for the import interface
• ✅ Comprehensive documentation included

Fixes #228

Original prompt

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This section details on the original issue you should resolve

<issue_title>Import Browser booksmarks</issue_title>
<issue_description>- Create a Import interface that can be extended to different type of imports like html file, chrome bookmarks, mozilla bookmarks, etc.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Import Browser booksmarks #228

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[yogeshpaliyal]

@copilot fox lint issues.

[Copilot]

@copilot fox lint issues.

Fixed all ktlint issues in commit c233964. Changes include:

• Converted function bodies to expression bodies
• Removed trailing whitespace
• Fixed multiline expression wrapping
• Removed needless blank lines

All files now pass ktlint validation.

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[yogeshpaliyal]

@copilot Add options to import from different places in settings page

[Copilot]

@copilot Add options to import from different places in settings page

Added import options in Settings page (commit fac20c5). The Settings screen now displays dynamic import options for all available importers:

Import & Export section now includes:

• 📥 Import from CSV
• 📥 Import from Chrome Bookmarks
• 📥 Import from Mozilla/Firefox Bookmarks
• 📤 Export links (unchanged)

Each option opens a file picker with the appropriate MIME type filters. The UI dynamically generates options based on registered importers, making it easy to add new import formats in the future.