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[ECO-4943] feat: basic sending and receiving messages in the Chat
In this commit, we introduce the basic implementation for sending and receiving messages. Corner cases and potential race conditions are not the focus at this stage and will be addressed later, once Room lifecycle management is implemented and a unified test suite is set up.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| package com.ably.chat | ||
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| import com.google.gson.JsonElement | ||
| import com.google.gson.JsonObject | ||
| import com.google.gson.JsonPrimitive | ||
| import io.ably.lib.http.HttpCore | ||
| import io.ably.lib.http.HttpUtils | ||
| import io.ably.lib.types.AblyException | ||
| import io.ably.lib.types.ErrorInfo | ||
|
|
||
| internal fun JsonElement?.toRequestBody(useBinaryProtocol: Boolean = false): HttpCore.RequestBody = | ||
| HttpUtils.requestBodyFromGson(this, useBinaryProtocol) | ||
|
|
||
| internal fun Map<String, String>.toJson() = JsonObject().apply { | ||
| forEach { (key, value) -> addProperty(key, value) } | ||
| } | ||
|
|
||
| internal fun JsonElement.toMap() = buildMap<String, String> { | ||
| requireJsonObject().entrySet().filter { (_, value) -> value.isJsonPrimitive }.forEach { (key, value) -> put(key, value.asString) } | ||
| } | ||
|
|
||
| internal fun JsonElement.requireJsonObject(): JsonObject { | ||
| if (!isJsonObject) { | ||
| throw AblyException.fromErrorInfo( | ||
| ErrorInfo("Response value expected to be JsonObject, got primitive instead", HttpStatusCodes.InternalServerError), | ||
| ) | ||
| } | ||
| return asJsonObject | ||
| } | ||
|
|
||
| internal fun JsonElement.requireString(memberName: String): String { | ||
| val memberElement = requireField(memberName) | ||
| if (!memberElement.isJsonPrimitive) { | ||
| throw AblyException.fromErrorInfo( | ||
| ErrorInfo( | ||
| "Value for \"$memberName\" field expected to be JsonPrimitive, got object instead", | ||
| HttpStatusCodes.InternalServerError, | ||
| ), | ||
| ) | ||
| } | ||
| return memberElement.asString | ||
| } | ||
|
|
||
| internal fun JsonElement.requireLong(memberName: String): Long { | ||
| val memberElement = requireJsonPrimitive(memberName) | ||
| try { | ||
| return memberElement.asLong | ||
| } catch (formatException: NumberFormatException) { | ||
| throw AblyException.fromErrorInfo( | ||
| formatException, | ||
| ErrorInfo("Required numeric field \"$memberName\" is not a valid long", HttpStatusCodes.InternalServerError), | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| internal fun JsonElement.requireInt(memberName: String): Int { | ||
| val memberElement = requireJsonPrimitive(memberName) | ||
| try { | ||
| return memberElement.asInt | ||
| } catch (formatException: NumberFormatException) { | ||
| throw AblyException.fromErrorInfo( | ||
| formatException, | ||
| ErrorInfo("Required numeric field \"$memberName\" is not a valid int", HttpStatusCodes.InternalServerError), | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| internal fun JsonElement.requireJsonPrimitive(memberName: String): JsonPrimitive { | ||
| val memberElement = requireField(memberName) | ||
| if (!memberElement.isJsonPrimitive) { | ||
| throw AblyException.fromErrorInfo( | ||
| ErrorInfo( | ||
| "Value for \"$memberName\" field expected to be JsonPrimitive, got object instead", | ||
| HttpStatusCodes.InternalServerError, | ||
| ), | ||
| ) | ||
| } | ||
| return memberElement.asJsonPrimitive | ||
| } | ||
|
|
||
| internal fun JsonElement.requireField(memberName: String): JsonElement = requireJsonObject().get(memberName) | ||
| ?: throw AblyException.fromErrorInfo( | ||
| ErrorInfo("Required field \"$memberName\" is missing", HttpStatusCodes.InternalServerError), | ||
| ) |
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