Move the pushTranslations script into the codebase as kotlin.

build-logic/tools/src/main/java/org/signal/buildtools/SmartlingClient.kt

@@ -0,0 +1,86 @@
+package org.signal.buildtools
+
+import groovy.json.JsonBuilder
+import groovy.json.JsonSlurper
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.MultipartBody
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.RequestBody.Companion.asRequestBody
+import okhttp3.RequestBody.Companion.toRequestBody
+import java.io.File
+
+/**
+ * Client for interacting with the Smartling translation API.
+ */
+class SmartlingClient(
+  private val userIdentifier: String,
+  private val userSecret: String,
+  private val projectId: String
+) {
+
+  private val client = OkHttpClient()
+  private val jsonParser = JsonSlurper()
+
+  /**
+   * Authenticates with Smartling and returns an access token.
+   */
+  @Suppress("UNCHECKED_CAST")
+  fun authenticate(): String {
+    val jsonBody = JsonBuilder(
+      mapOf(
+        "userIdentifier" to userIdentifier,
+        "userSecret" to userSecret
+      )
+    ).toString()
+
+    val request = Request.Builder()
+      .url("https://api.smartling.com/auth-api/v2/authenticate")
+      .post(jsonBody.toRequestBody("application/json".toMediaType()))
+      .build()
+
+    val response = client.newCall(request).execute()
+    val responseBody = response.body.string()
+
+    if (!response.isSuccessful) {
+      throw SmartlingException("Authentication failed with code ${response.code}: $responseBody")
+    }
+
+    val json = jsonParser.parseText(responseBody) as Map<String, Any>
+    val responseObj = json["response"] as? Map<String, Any>
+    val data = responseObj?.get("data") as? Map<String, Any>
+    val accessToken = data?.get("accessToken") as? String
+
+    return accessToken
+      ?: throw SmartlingException("Failed to extract access token from response: $responseBody")
+  }
+
+  /**
+   * Uploads a file to Smartling for translation.
+   */
+  fun uploadFile(authToken: String, file: File, fileUri: String): String {
+    val requestBody = MultipartBody.Builder()
+      .setType(MultipartBody.FORM)
+      .addFormDataPart("file", file.name, file.asRequestBody("application/xml".toMediaType()))
+      .addFormDataPart("fileUri", fileUri)
+      .addFormDataPart("fileType", "android")
+      .build()
+
+    val request = Request.Builder()
+      .url("https://api.smartling.com/files-api/v2/projects/$projectId/file")
+      .header("Authorization", "Bearer $authToken")
+      .post(requestBody)
+      .build()
+
+    val response = client.newCall(request).execute()
+    val responseBody = response.body.string()
+
+    if (!response.isSuccessful) {
+      throw SmartlingException("Upload failed with code ${response.code}: $responseBody")
+    }
+
+    return responseBody
+  }
+
+  class SmartlingException(message: String) : RuntimeException(message)
+}