Convert EmojisService, WordsService to Kotlin

[tuancoltech]

Convert EmojisService, WordsService to Kotlin

Summary by CodeRabbit

• Refactor
  • Migrated the Emojis and Words service interfaces from Java to Kotlin with no changes to user-facing functionality.

[coderabbitai]

Walkthrough

This change removes the Java implementations of the EmojisService and WordsService Retrofit interfaces and introduces equivalent Kotlin versions in the same package. Both new Kotlin interfaces maintain the same HTTP GET endpoints and method signatures, serving as contracts for fetching emoji and word data from the REST API. This update aligns with the ongoing modernization and Kotlin migration of the codebase, supporting elimu.ai's mission to build innovative learning software that empowers out-of-school children to teach themselves basic reading📖, writing✍🏽, and math🔢 within 6 months.

Changes

File(s)	Change Summary
app/src/main/java/ai/elimu/content_provider/rest/EmojisService.java	Removed the Java interface EmojisService for the emoji REST endpoint.
app/src/main/java/ai/elimu/content_provider/rest/EmojisService.kt	Added a Kotlin interface EmojisService with the same Retrofit endpoint for listing emojis.
app/src/main/java/ai/elimu/content_provider/rest/WordsService.java	Removed the Java interface WordsService for the word REST endpoint.
app/src/main/java/ai/elimu/content_provider/rest/WordsService.kt	Added a Kotlin interface WordsService with the same Retrofit endpoint for listing words.

Suggested reviewers

• jo-elimu

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Reviewing files that changed from the base of the PR and between 0d4ac80 and e9cb9b4.

📒 Files selected for processing (2)

• app/src/main/java/ai/elimu/content_provider/rest/WordsService.java (0 hunks)
• app/src/main/java/ai/elimu/content_provider/rest/WordsService.kt (1 hunks)

💤 Files with no reviewable changes (1)

• app/src/main/java/ai/elimu/content_provider/rest/WordsService.java

✅ Files skipped from review due to trivial changes (1)

• app/src/main/java/ai/elimu/content_provider/rest/WordsService.kt

⏰ Context from checks skipped due to timeout of 90000ms (8)

• GitHub Check: test (29)
• GitHub Check: test (28)
• GitHub Check: build (ubuntu-latest, 21)
• GitHub Check: build (windows-latest, 21)
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• GitHub Check: build (macos-latest, 21)

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[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (2)

app/src/main/java/ai/elimu/content_provider/rest/EmojisService.kt (2)

7-10: Consider adopting Kotlin coroutines for idiomatic asynchronous calls.

Currently, listEmojis() returns Call<List<EmojiGson>>, mirroring the Java approach. For a more Kotlin‑idiomatic design and cleaner async handling, you might switch to a suspend function returning either List<EmojiGson> or Response<List<EmojiGson>>:

@GET("content/emojis")
suspend fun listEmojis(): List<EmojiGson>

Leveraging coroutines will simplify callers and align with modern Kotlin best practices.

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7-9: Add KDoc for better documentation.

Enhance maintainability by documenting the interface and its method. For example:

/**
 * Service to fetch available emojis from the content API.
 *
 * @return List of EmojiGson representing the emojis payload.
 */

This will help new contributors understand the contract quickly.

📜 Review details

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

📥 Commits

Reviewing files that changed from the base of the PR and between 515ca86 and 0d4ac80.

📒 Files selected for processing (2)

• app/src/main/java/ai/elimu/content_provider/rest/EmojisService.java (0 hunks)
• app/src/main/java/ai/elimu/content_provider/rest/EmojisService.kt (1 hunks)

💤 Files with no reviewable changes (1)

• app/src/main/java/ai/elimu/content_provider/rest/EmojisService.java

⏰ Context from checks skipped due to timeout of 90000ms (8)

• GitHub Check: build (windows-latest, 21)
• GitHub Check: build (macos-latest, 17)
• GitHub Check: build (windows-latest, 17)
• GitHub Check: build (macos-latest, 21)
• GitHub Check: build (ubuntu-latest, 21)
• GitHub Check: build (ubuntu-latest, 17)
• GitHub Check: test (28)
• GitHub Check: test (29)

🔇 Additional comments (2)

app/src/main/java/ai/elimu/content_provider/rest/EmojisService.kt (2)

1-2: Correct package declaration and alignment.

The package ai.elimu.content_provider.rest matches the existing Java structure, ensuring the new Kotlin interface integrates seamlessly during our language migration. This consistency supports elimu.ai's mission to build innovative learning software that empowers out-of-school children to teach themselves basic reading📖, writing✍🏽 and math🔢 within 6 months.

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3-6: Imports are precise and necessary.

Imports for EmojiGson, Call, and @GET are exactly what this service needs—no unused or missing dependencies detected.