Adds a custom task for downloading the API

openai-client/generator/build.gradle.kts

@@ -13,6 +13,12 @@ tasks.test {
     useJUnitPlatform()
 }
 
+task("downloadOpenAIAPI", JavaExec::class) {
+    group = "GenerateTasks"
+    mainClass = "ai.xef.openai.generator.DownloadOpenAIAPI"
+    classpath = sourceSets["main"].runtimeClasspath
+}
+
 task("openaiClientGenerate", JavaExec::class) {
     group = "GenerateTasks"
     mainClass = "org.openapitools.codegen.OpenAPIGenerator"

openai-client/generator/config/openai-api-commit

@@ -0,0 +1 @@
+5c1857ea865e74e45e3b12064e0cc2396ef64be1

openai-client/generator/src/main/java/ai/xef/openai/generator/DownloadOpenAIAPI.java

@@ -0,0 +1,38 @@
+package ai.xef.openai.generator;
+
+import java.io.*;
+import java.net.URL;
+import java.nio.channels.Channels;
+import java.nio.channels.FileChannel;
+import java.nio.channels.ReadableByteChannel;
+
+public class DownloadOpenAIAPI {
+    public static void main(String[] args) {
+        try {
+            String commit = readCommit();
+            downloadAPI(commit);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static String readCommit() throws IOException {
+        StringBuilder resultStringBuilder = new StringBuilder();
+        try (BufferedReader br = new BufferedReader(new FileReader("config/openai-api-commit"))) {
+            String line;
+            while ((line = br.readLine()) != null) {
+                resultStringBuilder.append(line).append("\n");
+            }
+        }
+        return resultStringBuilder.toString().trim();
+    }
+
+    private static void downloadAPI(String commit) throws IOException {
+        URL url = new URL("https://raw.githubusercontent.com/openai/openai-openapi/%s/openapi.yaml".formatted(commit));
+        ReadableByteChannel readableByteChannel = Channels.newChannel(url.openStream());
+        try (FileOutputStream fileOutputStream = new FileOutputStream("config/openai-api.yaml")) {
+            FileChannel fileChannel = fileOutputStream.getChannel();
+            fileChannel.transferFrom(readableByteChannel, 0, Long.MAX_VALUE);
+        }
+    }
+}