Allow using existing http client

Author: code-asher

src/main/kotlin/com/coder/gateway/sdk/BaseCoderRestClient.kt

@@ -50,6 +50,7 @@ open class BaseCoderRestClient(
     private val settings: CoderSettings = CoderSettings(CoderSettingsState()),
     private val proxyValues: ProxyValues? = null,
     private val pluginVersion: String = "development",
+    existingHttpClient: OkHttpClient? = null,
 ) {
     private val httpClient: OkHttpClient
     private val retroRestClient: CoderV2RestFacade
@@ -67,7 +68,7 @@ open class BaseCoderRestClient(
 
         val socketFactory = coderSocketFactory(settings.tls)
         val trustManagers = coderTrustManagers(settings.tls.caPath)
-        var builder = OkHttpClient.Builder()
+        var builder = existingHttpClient?.newBuilder() ?: OkHttpClient.Builder()
 
         if (proxyValues != null) {
             builder = builder

src/main/kotlin/com/coder/gateway/sdk/CoderRestClient.kt

@@ -5,16 +5,18 @@ import com.intellij.ide.plugins.PluginManagerCore
 import com.intellij.openapi.components.service
 import com.intellij.openapi.extensions.PluginId
 import com.intellij.util.net.HttpConfigurable
+import okhttp3.OkHttpClient
 import java.net.URL
 
 /**
  * A client instance that hooks into global JetBrains services for default
  * settings.  Exists only so we can use the base client in tests.
  */
-class CoderRestClient(url: URL, token: String) : BaseCoderRestClient(url, token,
+class CoderRestClient(url: URL, token: String, httpClient: OkHttpClient? = null) : BaseCoderRestClient(url, token,
     service<CoderSettingsService>(),
     ProxyValues(HttpConfigurable.getInstance().proxyLogin,
         HttpConfigurable.getInstance().plainProxyPassword,
         HttpConfigurable.getInstance().PROXY_AUTHENTICATION,
         HttpConfigurable.getInstance().onlyBySettingsSelector),
-    PluginManagerCore.getPlugin(PluginId.getId("com.coder.gateway"))!!.version)
+    PluginManagerCore.getPlugin(PluginId.getId("com.coder.gateway"))!!.version,
+    httpClient)