Fix list endpoints (#236)

* Now correctly parsing data as params for GET requests

* Value has to be a string

* lol linting

Author: PaulAsjes

build.gradle.kts

@@ -40,6 +40,8 @@ dependencies {
 
   implementation("com.github.kittinunf.fuel:fuel:2.3.1")
 
+  implementation("org.jetbrains.kotlin:kotlin-reflect:1.5.0")
+
   testImplementation("org.jetbrains.kotlin:kotlin-test")
 
   testImplementation("org.jetbrains.kotlin:kotlin-test-junit")

src/main/kotlin/com/workos/common/http/RequestConfig.kt

@@ -1,5 +1,9 @@
 package com.workos.common.http
 
+import kotlin.reflect.KClass
+import kotlin.reflect.KProperty1
+import kotlin.reflect.full.memberProperties
+
 /**
  * Configuration for HTTP Requests.
  *
@@ -12,44 +16,54 @@ class RequestConfig(
   val headers: Map<String, String>? = null,
   val data: Any? = null
 ) {
-  /**
-   * @suppress
-   */
+  /** @suppress */
   companion object {
     @JvmStatic
     fun builder(): RequestConfigBuilder {
       return RequestConfigBuilder()
     }
+
+    /** Helper method for converting data into params. */
+    infix fun <T : Any> toMap(obj: T): Map<String, Any?> {
+      val params =
+        (obj::class as KClass<T>).memberProperties.associate { prop: KProperty1<T, *> ->
+          prop.name.toSnakeCase() to
+            prop.get(obj)?.let { value ->
+              if (value::class.isData) {
+                toMap(value)
+              } else {
+                value.toString()
+              }
+            }
+        }
+
+      return params.filterValues { it != null }
+    }
+
+    /** Convert camel case to snake case. */
+    fun String.toSnakeCase() = replace(humps, "_").lowercase()
+
+    private val humps = "(?<=.)(?=\\p{Upper})".toRegex()
   }
 
-  /**
-   * Builder class for creating [RequestConfig].
-   */
+  /** Builder class for creating [RequestConfig]. */
   class RequestConfigBuilder {
     private var params: Map<String, String> = emptyMap()
 
     private var headers: Map<String, String> = emptyMap()
 
     private var data: Any? = null
 
-    /**
-     * Set the request parameters.
-     */
+    /** Set the request parameters. */
     fun params(value: Map<String, String>) = apply { params = value }
 
-    /**
-     * Set the request headers.
-     */
+    /** Set the request headers. */
     fun headers(value: Map<String, String?>) = apply { headers = value as Map<String, String> }
 
-    /**
-     * Set the request body.
-     */
+    /** Set the request body. */
     fun data(value: Any) = apply { data = value }
 
-    /**
-     * Creates an instance of [RequestConfig] with the given params.
-     */
+    /** Creates an instance of [RequestConfig] with the given params. */
     fun build(): RequestConfig {
       return RequestConfig(params, headers, data)
     }