all: refactor model classes and serialization

- Move model classes to a standalone `model` Gradle module
- Migrate from Moshi to kotlinx.serialization for multiplatform support

api/build.gradle.kts

@@ -1,14 +1,12 @@
-plugins {
-  kotlin("jvm")
-  id("com.google.devtools.ksp") version "1.5.31-1.0.0"
-}
+plugins { kotlin("jvm") }
 
 dependencies {
+  api(projects.model)
   api(libs.retrofit.lib)
-  ksp(libs.moshix.ksp)
-  implementation(libs.moshi.lib)
-  implementation(libs.retrofit.moshiConverter) { exclude(group = "com.squareup.moshi") }
+  implementation(libs.kotlinx.serialization.core)
+  testImplementation(libs.kotlinx.serialization.json)
   testImplementation(libs.kotlin.coroutines.core)
   testImplementation(kotlin("test-junit"))
+  testImplementation(libs.retrofit.kotlinxSerializationConverter) { isTransitive = false }
   testImplementation(libs.testing.mockWebServer)
 }

api/src/main/kotlin/dev/msfjarvis/claw/api/LobstersApi.kt

@@ -1,7 +1,7 @@
 package dev.msfjarvis.claw.api
 
-import dev.msfjarvis.claw.api.model.LobstersPost
-import dev.msfjarvis.claw.api.model.LobstersPostDetails
+import dev.msfjarvis.claw.model.LobstersPost
+import dev.msfjarvis.claw.model.LobstersPostDetails
 import retrofit2.http.GET
 import retrofit2.http.Path
 import retrofit2.http.Query

api/src/main/kotlin/dev/msfjarvis/claw/api/model/Comment.kt

@@ -1,20 +0,0 @@
-package dev.msfjarvis.claw.api.model
-
-import com.squareup.moshi.Json
-import com.squareup.moshi.JsonClass
-
-@JsonClass(generateAdapter = true)
-class Comment(
-  @Json(name = "short_id") val shortId: String,
-  @Json(name = "short_id_url") val shortIdUrl: String,
-  @Json(name = "created_at") val createdAt: String,
-  @Json(name = "updated_at") val updatedAt: String,
-  @Json(name = "is_deleted") val isDeleted: Boolean,
-  @Json(name = "is_moderated") val isModerated: Boolean,
-  val score: Long,
-  val flags: Long,
-  val comment: String,
-  val url: String,
-  @Json(name = "indent_level") val indentLevel: Long,
-  @Json(name = "commenting_user") val user: User,
-)

api/src/main/kotlin/dev/msfjarvis/claw/api/model/KeybaseSignature.kt

@@ -1,10 +0,0 @@
-package dev.msfjarvis.claw.api.model
-
-import com.squareup.moshi.Json
-import com.squareup.moshi.JsonClass
-
-@JsonClass(generateAdapter = true)
-class KeybaseSignature(
-  @Json(name = "kb_username") val kbUsername: String,
-  @Json(name = "sig_hash") val sigHash: String,
-)

api/src/main/kotlin/dev/msfjarvis/claw/api/model/LobstersPost.kt

@@ -1,20 +0,0 @@
-package dev.msfjarvis.claw.api.model
-
-import com.squareup.moshi.Json
-import com.squareup.moshi.JsonClass
-
-@JsonClass(generateAdapter = true)
-class LobstersPost(
-  @Json(name = "short_id") val shortId: String,
-  @Json(name = "short_id_url") val shortIdUrl: String,
-  @Json(name = "created_at") val createdAt: String,
-  val title: String,
-  val url: String,
-  val score: Long,
-  val flags: Long,
-  @Json(name = "comment_count") val commentCount: Long,
-  val description: String,
-  @Json(name = "comments_url") val commentsUrl: String,
-  @Json(name = "submitter_user") val submitter: User,
-  val tags: List<String>,
-)

api/src/main/kotlin/dev/msfjarvis/claw/api/model/LobstersPostDetails.kt

@@ -1,21 +0,0 @@
-package dev.msfjarvis.claw.api.model
-
-import com.squareup.moshi.Json
-import com.squareup.moshi.JsonClass
-
-@JsonClass(generateAdapter = true)
-class LobstersPostDetails(
-  @Json(name = "short_id") val shortId: String,
-  @Json(name = "short_id_url") val shortIdUrl: String,
-  @Json(name = "created_at") val createdAt: String,
-  val title: String,
-  val url: String,
-  val score: Long,
-  val flags: Long,
-  @Json(name = "comment_count") val commentCount: Long,
-  val description: String,
-  @Json(name = "comments_url") val commentsUrl: String,
-  @Json(name = "submitter_user") val submitter: User,
-  val tags: List<String>,
-  val comments: List<Comment>,
-)

api/src/main/kotlin/dev/msfjarvis/claw/api/model/User.kt

@@ -1,19 +0,0 @@
-package dev.msfjarvis.claw.api.model
-
-import com.squareup.moshi.Json
-import com.squareup.moshi.JsonClass
-
-@JsonClass(generateAdapter = true)
-class User(
-  val username: String,
-  @Json(name = "created_at") val createdAt: String,
-  @Json(name = "is_admin") val isAdmin: Boolean,
-  val about: String,
-  @Json(name = "is_moderator") val isModerator: Boolean,
-  val karma: Long = 0,
-  @Json(name = "avatar_url") val avatarUrl: String,
-  @Json(name = "invited_by_user") val invitedByUser: String,
-  @Json(name = "github_username") val githubUsername: String? = null,
-  @Json(name = "twitter_username") val twitterUsername: String? = null,
-  @Json(name = "keybase_signatures") val keybaseSignatures: List<KeybaseSignature> = emptyList(),
-)

api/src/test/kotlin/dev/msfjarvis/claw/api/LobstersApiTest.kt

@@ -1,34 +1,37 @@
 package dev.msfjarvis.claw.api
 
-import com.squareup.moshi.Moshi
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
 import dev.msfjarvis.claw.util.TestUtils
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertTrue
 import kotlin.test.fail
 import kotlinx.coroutines.runBlocking
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
 import mockwebserver3.Dispatcher
 import mockwebserver3.MockResponse
 import mockwebserver3.MockWebServer
 import mockwebserver3.RecordedRequest
+import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
 import org.junit.AfterClass
 import org.junit.BeforeClass
 import retrofit2.Retrofit
-import retrofit2.converter.moshi.MoshiConverterFactory
 import retrofit2.create
 
+@OptIn(ExperimentalSerializationApi::class)
 class LobstersApiTest {
 
   companion object {
+    private val contentType = "application/json".toMediaType()
     private val webServer = MockWebServer()
-    private val moshi = Moshi.Builder().build()
     private val okHttp = OkHttpClient.Builder().build()
     private val retrofit =
       Retrofit.Builder()
         .client(okHttp)
         .baseUrl("http://localhost:8080/")
-        .addConverterFactory(MoshiConverterFactory.create(moshi))
+        .addConverterFactory(Json.asConverterFactory(contentType))
         .build()
     private val apiClient = retrofit.create<LobstersApi>()