New api version for plugin

src/main/kotlin/OSSLLMCompletionProvider.kt

@@ -4,28 +4,29 @@ import com.github.bzz.intellij.requests.Requester
 import com.intellij.codeInsight.inline.completion.InlineCompletionElement
 import com.intellij.codeInsight.inline.completion.InlineCompletionProvider
 import com.intellij.codeInsight.inline.completion.InlineCompletionRequest
-import com.intellij.openapi.diagnostic.thisLogger
+import com.intellij.openapi.diagnostic.Logger
 import com.intellij.openapi.editor.event.DocumentEvent
 import org.jetbrains.annotations.ApiStatus
 
 @ApiStatus.Experimental
 class OSSLLMCompletionProvider : InlineCompletionProvider {
 
-    override suspend fun getProposals(request: InlineCompletionRequest): List<InlineCompletionElement> {
+    private val logger = Logger.getInstance("(when autocompleting)")
+
+    override suspend fun getProposals(request: InlineCompletionRequest): List<InlineCompletionElement> =
         try {
             val caretPosition = request.startOffset
-            val proposal = Requester.getModelSuggestions(
+            val proposals = Requester.getModelSuggestions(
                 request.document.text.substring(0, caretPosition)
-            ).text ?: return emptyList()
-            return listOf(InlineCompletionElement(proposal))
+            )
+            proposals.results.map { InlineCompletionElement(it.text) }
         } catch (knownException: Requester.RequesterException) {
-            thisLogger().warn(knownException.message)
-            return emptyList()
+            logger.warn(knownException.message)
+            emptyList()
         } catch (exception: Exception) {
-            thisLogger().warn("Unknown exception. Message: ${exception.message}")
-            return emptyList()
+            logger.warn("Unknown exception. Message: ${exception.message}")
+            emptyList()
         }
-    }
 
     override fun isEnabled(event: DocumentEvent): Boolean {
         return true

src/main/kotlin/com/github/bzz/intellij/actions/TestAction.kt

@@ -13,6 +13,9 @@ class TestAction: AnAction() {
 
         val editor = event.getRequiredData(CommonDataKeys.EDITOR)
         val caretPosition = editor.caretModel.primaryCaret.selectionStart
-        logger.warn(Requester.getModelSuggestions(editor.document.text).text?.substring(0, caretPosition))
+        logger.warn(
+            Requester.getModelSuggestions(editor.document.text.substring(0, caretPosition)).
+                results.firstOrNull()?.text ?: "---"
+        )
     }
-}
+}

src/main/kotlin/com/github/bzz/intellij/models/AvailableModels.kt

@@ -1,11 +1,30 @@
 package com.github.bzz.intellij.com.github.bzz.intellij.models
 
+import com.github.bzz.intellij.requests.Requester
+import com.intellij.openapi.diagnostic.Logger
 import java.util.concurrent.atomic.AtomicInteger
 
 
 object AvailableModels {
 
     val currentModelIndex = AtomicInteger(0)
 
-    val modelsList: List<String> = listOf("proxy-model", "other proxy-model")
+    private val logger = Logger.getInstance("(getting available models)")
+
+    private fun getAvailableModels(): List<String> =
+        try {
+            Requester.getAvailableModels().models.map { it.modelName }
+        } catch (knownException: Requester.RequesterException) {
+            logger.warn(knownException.message)
+            emptyList()
+        } catch (otherException: Requester.RequesterException) {
+            logger.warn("Unknown exception. Message: ${otherException.message}")
+            emptyList()
+        }
+
+    val modelsList: List<String> = getAvailableModels()
+
+    fun currentModel() : String? {
+        return modelsList.getOrNull(currentModelIndex.get())
+    }
 }

src/main/kotlin/com/github/bzz/intellij/requests/JsonData.kt

@@ -0,0 +1,34 @@
+package com.github.bzz.intellij.com.github.bzz.intellij.requests
+
+import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.Serializable
+
+
+@Serializable
+data class ServerProposal (
+    val text: String
+)
+
+@Serializable
+data class ProposalsResponse (
+    val results: List<ServerProposal>
+)
+
+@Serializable
+data class LLMModel (
+    @SerializedName("model_name")
+    val modelName: String
+)
+
+@Serializable
+data class ModelsResponse(
+    val models: List<LLMModel>
+)
+
+@Serializable
+data class ProposalsQuery(
+    val model: String,
+    val prompt: String,
+    @SerializedName("max_new_tokens")
+    val maxNewTokens: Int
+)

src/main/kotlin/com/github/bzz/intellij/requests/Requester.kt

@@ -1,7 +1,11 @@
 package com.github.bzz.intellij.requests
 
-import com.github.bzz.intellij.com.github.bzz.intellij.requests.ServerResponse
+import com.github.bzz.intellij.com.github.bzz.intellij.models.AvailableModels
+import com.github.bzz.intellij.com.github.bzz.intellij.requests.ModelsResponse
+import com.github.bzz.intellij.com.github.bzz.intellij.requests.ProposalsQuery
+import com.github.bzz.intellij.com.github.bzz.intellij.requests.ProposalsResponse
 import com.google.gson.Gson
+import com.google.gson.JsonSyntaxException
 import java.io.IOException
 import java.net.URI
 import java.net.http.HttpClient
@@ -11,30 +15,56 @@ import java.net.http.HttpTimeoutException
 
 
 object Requester {
+
+    const val MAX_TOKEN_LENGTH = 10
     open class RequesterException(message: String): RuntimeException("RequesterException: $message")
 
     private class NoListenerRequesterException(ip: String, port: Int):
         RequesterException("Probable cause: server $ip is not running or listening at port $port.")
 
-    private class TimeoutRequesterException():
-        RequesterException("Probable cause: new model is being downloaded currently.")
+    private class TimeoutRequesterException:
+        RequesterException("Probable cause: poor connection.")
 
     private class GeneralRequesterException(ip: String, port: Int, httpStatus: Int):
         RequesterException("HTTP Request to $ip:$port failed. Failure status code: $httpStatus")
 
-    private class LocationMissingException(ip: String):
-        RequesterException("Redirect response from $ip is missing Location header")
+    private class JsonRequesterException(ip: String, port: Int, answer: String?):
+        RequesterException("Response from $ip:$port has incompatible json: $answer")
+
+    private class NoLoadedLLMException:
+        RequesterException("No LLM is chosen due to the absence of any.")
 
 
     private val client = HttpClient.newBuilder().build()
 
-    fun getModelSuggestions(context: String, ip: String = "localhost", port: Int = 8000): ServerResponse {
+    fun getAvailableModels(ip: String = "localhost", port: Int = 8000): ModelsResponse {
+        val request = HttpRequest.newBuilder()
+            .uri(URI.create("http://$ip:$port"))
+            .GET()
+            .timeout(java.time.Duration.ofSeconds(10))
+            .build()
+
+        return serverQuery(ip, port, request, ModelsResponse::class.java)
+    }
+
+    fun getModelSuggestions(context: String, ip: String = "localhost", port: Int = 8000): ProposalsResponse {
+        val queryParams = ProposalsQuery(
+            model = AvailableModels.currentModel() ?: throw NoLoadedLLMException(),
+            prompt = context,
+            maxNewTokens = MAX_TOKEN_LENGTH
+        )
+        val json = Gson().toJson(queryParams)
         val request = HttpRequest.newBuilder()
                 .uri(URI.create("http://$ip:$port"))
-                .POST(HttpRequest.BodyPublishers.ofString(context))
+                .POST(HttpRequest.BodyPublishers.ofString(json))
+                .header("Content-type", "application/json")
                 .timeout(java.time.Duration.ofSeconds(10))
                 .build()
 
+        return serverQuery(ip, port, request, ProposalsResponse::class.java)
+    }
+
+    private fun <T> serverQuery(ip: String, port: Int, request: HttpRequest, serializableClass: Class<T>): T {
         val response = try {
             client.send(request, HttpResponse.BodyHandlers.ofString())
         } catch(toe: HttpTimeoutException) {
@@ -44,13 +74,10 @@ object Requester {
         }
 
         return when (response.statusCode()) {
-            200 -> Gson().fromJson(response.body(), ServerResponse::class.java)
-            301, 302, 303, 307 -> {
-                val newLocation = response.headers().firstValue("Location")
-                    .orElseThrow {
-                        LocationMissingException(ip)
-                    }
-                getModelSuggestions(context, newLocation)
+            200 -> try {
+                Gson().fromJson(response.body(), serializableClass)
+            } catch(jsonException: JsonSyntaxException) {
+                throw JsonRequesterException(ip, port, response.body())
             }
             else -> throw GeneralRequesterException(ip, port, response.statusCode())
         }