Expected 'app.bsky.embed.images' or 'app.bsky.embed.external' or 'app.bsky.embed.record' or 'app.bsky.embed.recordWithMedia' but found 'AppBskyEmbedImages.Main'.

[ligi]

First: thanks for your works! Love there is a Kotlin codebase for Bluesky already
Prefixing this issue: I extracted the API from your codebase to experiment with a bot.
For getTimeline calls with a certain cursor I am seeing this:

com.squareup.moshi.JsonDataException: Expected 'app.bsky.embed.images' or 'app.bsky.embed.external' or 'app.bsky.embed.record' or 'app.bsky.embed.recordWithMedia' but found 'AppBskyEmbedImages.Main'.
	at io.github.akiomik.seiun.api.adapters.Union4JsonAdapter.determineEither(Union4JsonAdapter.kt:99)
	at io.github.akiomik.seiun.api.adapters.Union4JsonAdapter.fromJson(Union4JsonAdapter.kt:61)
	at io.github.akiomik.seiun.api.adapters.Union4JsonAdapter.fromJson(Union4JsonAdapter.kt:15)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.kotlin.reflect.KotlinJsonAdapter.fromJson(KotlinJsonAdapter.kt:86)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.adapters.PolymorphicJsonAdapterFactory$PolymorphicJsonAdapter.fromJson(PolymorphicJsonAdapterFactory.java:264)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.kotlin.reflect.KotlinJsonAdapter.fromJson(KotlinJsonAdapter.kt:86)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.kotlin.reflect.KotlinJsonAdapter.fromJson(KotlinJsonAdapter.kt:86)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.CollectionJsonAdapter.fromJson(CollectionJsonAdapter.java:81)
	at com.squareup.moshi.CollectionJsonAdapter$2.fromJson(CollectionJsonAdapter.java:55)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.kotlin.reflect.KotlinJsonAdapter.fromJson(KotlinJsonAdapter.kt:86)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at retrofit2.converter.moshi.MoshiResponseBodyConverter.convert(MoshiResponseBodyConverter.java:46)
	at retrofit2.converter.moshi.MoshiResponseBodyConverter.convert(MoshiResponseBodyConverter.java:27)
	at com.slack.eithernet.ApiResultConverterFactory$ApiResultConverter.convert(ApiResult.kt:230)
	at com.slack.eithernet.ApiResultConverterFactory$ApiResultConverter.convert(ApiResult.kt:226)
	at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:243)
	at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:153)
	at okhttp3.internal.connection.RealCall$AsyncCall.run(RealCall.kt:519)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)

Very likely your android app will also stumble over this content.
Also wonder if you would be open to extracting the API to a separate project (I could also PR this)

[ligi]

Found another one:

com.squareup.moshi.JsonDataException: Not an RFC 3339 date: 2023-04-10T17:59:18.150459
	at com.squareup.moshi.adapters.Iso8601Utils.parse(Iso8601Utils.java:198)
	at com.squareup.moshi.adapters.Rfc3339DateJsonAdapter.fromJson(Rfc3339DateJsonAdapter.java:42)
	at com.squareup.moshi.adapters.Rfc3339DateJsonAdapter.fromJson(Rfc3339DateJsonAdapter.java:35)
	at com.squareup.moshi.kotlin.reflect.KotlinJsonAdapter.fromJson(KotlinJsonAdapter.kt:86)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.adapters.PolymorphicJsonAdapterFactory$PolymorphicJsonAdapter.fromJson(PolymorphicJsonAdapterFactory.java:264)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.kotlin.reflect.KotlinJsonAdapter.fromJson(KotlinJsonAdapter.kt:86)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.kotlin.reflect.KotlinJsonAdapter.fromJson(KotlinJsonAdapter.kt:86)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.CollectionJsonAdapter.fromJson(CollectionJsonAdapter.java:81)
	at com.squareup.moshi.CollectionJsonAdapter$2.fromJson(CollectionJsonAdapter.java:55)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at com.squareup.moshi.kotlin.reflect.KotlinJsonAdapter.fromJson(KotlinJsonAdapter.kt:86)
	at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
	at retrofit2.converter.moshi.MoshiResponseBodyConverter.convert(MoshiResponseBodyConverter.java:46)
	at retrofit2.converter.moshi.MoshiResponseBodyConverter.convert(MoshiResponseBodyConverter.java:27)
	at com.slack.eithernet.ApiResultConverterFactory$ApiResultConverter.convert(ApiResult.kt:230)
	at com.slack.eithernet.ApiResultConverterFactory$ApiResultConverter.convert(ApiResult.kt:226)
	at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:243)
	at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:153)
	at okhttp3.internal.connection.RealCall$AsyncCall.run(RealCall.kt:519)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)

[akiomik]

Thank you! The second one is related to #11 .