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feat: add version upgrade functionality #132

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merged 1 commit into from
Jan 10, 2025

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@jo-elimu jo-elimu commented Jan 10, 2025

Issue Number

Purpose

Technical Details

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Summary by CodeRabbit

  • Refactor

    • Reorganized SharedPreferencesHelper from the language package to the util package
    • Added new utility classes SharedPreferencesHelper and VersionHelper in the util package
  • New Features

    • Implemented automatic app version tracking during application initialization
    • Enhanced shared preferences management with new utility methods
  • Chores

    • Updated import statements across multiple files to reflect package restructuring

@jo-elimu jo-elimu self-assigned this Jan 10, 2025
@jo-elimu jo-elimu requested a review from a team as a code owner January 10, 2025 11:42
@jo-elimu jo-elimu linked an issue Jan 10, 2025 that may be closed by this pull request
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coderabbitai bot commented Jan 10, 2025

Walkthrough

The pull request involves refactoring the shared preferences and version management in the Android application. The changes include moving the SharedPreferencesHelper from the language package to the util package, introducing a new VersionHelper class to handle app version tracking, and updating import statements across multiple files. The primary focus is on improving code organization and adding version upgrade detection functionality.

Changes

File Change Summary
app/src/main/java/ai/elimu/content_provider/BaseApplication.java - Updated SharedPreferencesHelper import
- Added VersionHelper import
- Added VersionHelper.updateAppVersion() call in onCreate()
app/src/main/java/ai/elimu/content_provider/MainActivity.java - Updated SharedPreferencesHelper import path
app/src/main/java/ai/elimu/content_provider/language/LanguageListDialogFragment.java - Replaced direct SharedPreferences usage with SharedPreferencesHelper.storeLanguage()
app/src/main/java/ai/elimu/content_provider/language/SharedPreferencesHelper.java - Removed entire class
app/src/main/java/ai/elimu/content_provider/util/SharedPreferencesHelper.java - New class with methods for managing shared preferences
app/src/main/java/ai/elimu/content_provider/util/VersionHelper.java - New class with methods for tracking app version upgrades

Assessment against linked issues

Objective Addressed Explanation
Add version upgrade functionality [#90]
Execute code on version upgrade

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Actionable comments posted: 1

🧹 Nitpick comments (9)
app/src/main/java/ai/elimu/content_provider/util/SharedPreferencesHelper.java (4)

11-14: Consider making preference keys private and adding documentation.

The preference keys should be private to prevent external modification, and adding documentation would improve maintainability.

-    public static final String SHARED_PREFS = "shared_prefs";
-    public static final String PREF_APP_VERSION_CODE = "pref_app_version_code";
-    public static final String PREF_LANGUAGE = "pref_language";
+    /** Name of the SharedPreferences file */
+    private static final String SHARED_PREFS = "shared_prefs";
+    /** Key for storing the application version code */
+    private static final String PREF_APP_VERSION_CODE = "pref_app_version_code";
+    /** Key for storing the selected language */
+    private static final String PREF_LANGUAGE = "pref_language";

16-30: Add context validation and consider logging version changes.

The methods should validate the context parameter and could benefit from logging version changes for debugging purposes.

     public static void storeAppVersionCode(Context context, int appVersionCode) {
+        if (context == null) {
+            throw new IllegalArgumentException("Context cannot be null");
+        }
         SharedPreferences sharedPreferences = context.getSharedPreferences(SHARED_PREFS, Context.MODE_PRIVATE);
+        int previousVersion = sharedPreferences.getInt(PREF_APP_VERSION_CODE, 0);
         sharedPreferences.edit().putInt(PREF_APP_VERSION_CODE, appVersionCode).apply();
+        android.util.Log.i(SharedPreferencesHelper.class.getSimpleName(), 
+            "Updated app version code from " + previousVersion + " to " + appVersionCode);
     }

33-50: Add parameter validation and logging for language changes.

The language management methods should validate input parameters and could benefit from logging language changes.

     public static void storeLanguage(Context context, Language language) {
+        if (context == null) {
+            throw new IllegalArgumentException("Context cannot be null");
+        }
+        if (language == null) {
+            throw new IllegalArgumentException("Language cannot be null");
+        }
         SharedPreferences sharedPreferences = context.getSharedPreferences(SHARED_PREFS, Context.MODE_PRIVATE);
+        String previousLanguage = sharedPreferences.getString(PREF_LANGUAGE, null);
         sharedPreferences.edit().putString(PREF_LANGUAGE, language.toString()).apply();
+        android.util.Log.i(SharedPreferencesHelper.class.getSimpleName(), 
+            "Updated language from " + previousLanguage + " to " + language);
     }

9-51: Consider adding version migration support.

Since this class is part of the version upgrade functionality, consider adding methods to:

  1. Check if the app version has changed
  2. Handle version-specific migrations

Example addition:

    /**
     * Checks if the app version has changed since the last launch
     * @return true if the version has changed, false otherwise
     */
    public static boolean hasVersionChanged(Context context, int currentVersion) {
        int savedVersion = getAppVersionCode(context);
        return savedVersion > 0 && savedVersion != currentVersion;
    }

    /**
     * Interface for version-specific migrations
     */
    public interface VersionMigration {
        void migrate();
    }

    /**
     * Executes migrations for version upgrades
     */
    public static void handleVersionMigration(Context context, int currentVersion, 
            Map<Integer, VersionMigration> migrations) {
        int savedVersion = getAppVersionCode(context);
        if (savedVersion < currentVersion) {
            // Execute all migrations between saved and current version
            for (int version : migrations.keySet()) {
                if (version > savedVersion && version <= currentVersion) {
                    migrations.get(version).migrate();
                }
            }
        }
    }
app/src/main/java/ai/elimu/content_provider/language/LanguageListDialogFragment.java (1)

Line range hint 86-90: Consider improving error handling and state management.

While the SharedPreferencesHelper usage is good, there are a few concerns to address:

  1. Add null check for context before usage
  2. Consider handling potential SharedPreferences failures
  3. Review if restarting MainActivity and finishing current activity is the best approach for language changes

Consider this safer implementation:

     public void onClick(View v) {
         Log.i(getClass().getName(), "onClick");
         Log.i(getClass().getName(), "language: " + language);
-        SharedPreferencesHelper.storeLanguage(getContext(), language);
-        Intent mainActivityIntent = new Intent(getContext(), MainActivity.class);
-        startActivity(mainActivityIntent);
-        getActivity().finish();
+        Context context = getContext();
+        if (context == null) {
+            Log.e(getClass().getName(), "Context is null");
+            return;
+        }
+        try {
+            SharedPreferencesHelper.storeLanguage(context, language);
+            // Consider using recreate() instead of restart if possible
+            Intent mainActivityIntent = new Intent(context, MainActivity.class);
+            mainActivityIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+            startActivity(mainActivityIntent);
+            if (getActivity() != null) {
+                getActivity().finish();
+            }
+        } catch (Exception e) {
+            Log.e(getClass().getName(), "Failed to store language", e);
+            // Consider showing an error message to the user
+        }
     }
app/src/main/java/ai/elimu/content_provider/util/VersionHelper.java (3)

8-11: Enhance class documentation

While the current documentation indicates the basic purpose, consider expanding it to include:

  • Why version tracking is important
  • When and where this helper should be used
  • Example usage pattern
  • What constitutes an "upgrade" scenario

13-22: Improve error handling and parameter validation

Consider these improvements:

  1. Add null check for the context parameter
  2. Consider returning a default value or throwing a checked exception instead of RuntimeException
  3. Use Log.d for method entry logging instead of Log.i to reduce log noise
 public static int getAppVersionCode(Context context) {
-    Log.i(VersionHelper.class.getName(), "getAppVersionCode");
+    Log.d(VersionHelper.class.getName(), "getAppVersionCode");
+    if (context == null) {
+        throw new IllegalArgumentException("Context cannot be null");
+    }
     try {
         PackageInfo packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
         return packageInfo.versionCode;
     } catch (PackageManager.NameNotFoundException e) {
-        throw new RuntimeException("Could not get package name: " + e);
+        Log.e(VersionHelper.class.getName(), "Could not get package name", e);
+        return -1; // or throw a more specific checked exception
     }
 }

24-28: Improve method documentation

The documentation should specify:

  • Return value or void indication
  • Possible exceptions that might be thrown
  • Threading considerations
  • The persistence behavior via SharedPreferencesHelper
app/src/main/java/ai/elimu/content_provider/BaseApplication.java (1)

18-19: Document the version update functionality

The purpose and effects of VersionHelper.updateAppVersion should be documented here, especially since it's part of application initialization.

Add a comment explaining what this does, for example:

+    // Update stored app version code and detect upgrades
     VersionHelper.updateAppVersion(getApplicationContext());
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between ddf5a2c and c6415d8.

📒 Files selected for processing (6)
  • app/src/main/java/ai/elimu/content_provider/BaseApplication.java (2 hunks)
  • app/src/main/java/ai/elimu/content_provider/MainActivity.java (1 hunks)
  • app/src/main/java/ai/elimu/content_provider/language/LanguageListDialogFragment.java (2 hunks)
  • app/src/main/java/ai/elimu/content_provider/language/SharedPreferencesHelper.java (0 hunks)
  • app/src/main/java/ai/elimu/content_provider/util/SharedPreferencesHelper.java (1 hunks)
  • app/src/main/java/ai/elimu/content_provider/util/VersionHelper.java (1 hunks)
💤 Files with no reviewable changes (1)
  • app/src/main/java/ai/elimu/content_provider/language/SharedPreferencesHelper.java
✅ Files skipped from review due to trivial changes (1)
  • app/src/main/java/ai/elimu/content_provider/MainActivity.java
🔇 Additional comments (8)
app/src/main/java/ai/elimu/content_provider/util/SharedPreferencesHelper.java (1)

1-8: LGTM! Well-organized package structure and imports.

The class has been appropriately placed in the util package, and imports are minimal and necessary.

app/src/main/java/ai/elimu/content_provider/language/LanguageListDialogFragment.java (2)

19-19: LGTM! Good architectural improvement.

Moving SharedPreferencesHelper to the util package better reflects its cross-cutting nature, improving code organization.


86-86: Consider version upgrade implications for language settings.

Since this PR adds version upgrade functionality, ensure that language preferences are properly maintained during version upgrades. Consider adding version-specific migration logic in SharedPreferencesHelper if the language storage format changes between versions.

Let's check if there's any version-specific handling in SharedPreferencesHelper:

app/src/main/java/ai/elimu/content_provider/util/VersionHelper.java (4)

45-47: Implement or remove the upgrade handling template

The commented-out upgrade handling code suggests incomplete implementation. Either:

  1. Implement the version-specific upgrade logic, or
  2. Remove the commented code and create a separate issue to track this enhancement

Would you like me to help create a GitHub issue to track the implementation of version-specific upgrade handlers?


28-51: Add unit tests for version upgrade scenarios

The updateAppVersion method handles critical upgrade logic but appears to lack unit tests. Consider adding tests for:

  • Fresh installation (oldVersionCode = 0)
  • Normal upgrade path
  • Same version reinstall
  • Error scenarios

Would you like me to help generate a comprehensive test suite for this class?


1-52: Verify complete version upgrade flow

Since this is part of a larger version upgrade feature:

  1. Verify integration with BaseApplication.onCreate()
  2. Ensure SharedPreferencesHelper properly persists version information
✅ Verification successful

Version upgrade flow implementation verified

The version upgrade system is properly implemented with:

  • Correct integration in BaseApplication.onCreate()
  • Thread-safe version persistence via SharedPreferencesHelper
  • Proper upgrade detection and handling in VersionHelper
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check BaseApplication integration
ast-grep --pattern 'class BaseApplication {
  $$$
  onCreate() {
    $$$
    VersionHelper.updateAppVersion($$$)
    $$$
  }
  $$$
}'

# Verify SharedPreferencesHelper implementation
rg -A 5 "getAppVersionCode|storeAppVersionCode" --type java

Length of output: 3903


Script:

#!/bin/bash
# Search for BaseApplication with broader pattern
rg -B 2 -A 5 "class.*BaseApplication" --type java

# Search for any calls to VersionHelper.updateAppVersion
rg "VersionHelper\.updateAppVersion" --type java

Length of output: 977


31-37: Potential race condition in version code update

The check-then-act sequence between reading and writing the version code could lead to race conditions in concurrent scenarios. Consider making the version update atomic.

app/src/main/java/ai/elimu/content_provider/BaseApplication.java (1)

6-7: LGTM! Improved package organization

Moving SharedPreferencesHelper to the util package and adding VersionHelper import aligns with better code organization practices.

@jo-elimu jo-elimu merged commit 0bf1535 into main Jan 10, 2025
3 checks passed
@jo-elimu jo-elimu deleted the 90-add-version-upgrade-functionality branch January 10, 2025 13:35
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Add version upgrade functionality
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