add English translations, balloon images, and chatbot API gateway

addons/godot_llama/demo/demo_wasm.gd

@@ -8,8 +8,7 @@ extends Control
 @onready var generate_button: Button = $MarginContainer/Scroll/VBox/GenerateRow/GenerateButton
 @onready var helper = $VBoxContainer/SubViewportContainer/SubViewport/base_node/helper
 
-const API_URL := "" #TODO insert your url to the llm / api-gateway here
-
+const API_URL := ""
 var document_id
 
 signal closing_chatbot
@@ -17,6 +16,7 @@ signal closing_chatbot
 
 func _ready():
 	_http.request_completed.connect(Callable(self, "_on_request_completed"))
+	_http.timeout = 180.0
 	document_id = option_button.selected
 	helper.play_idle()
 	
@@ -35,8 +35,6 @@ func _unhandled_input(event: InputEvent) -> void:
 
 
 func _on_generate_pressed() -> void:
-	$VBoxContainer/SubViewportContainer/SubViewport/AnimationPlayer.play("walk_helper")
-	helper.play_think_walk()
 	var user_text := _prompt_edit.text.strip_edges()
 	document_id = option_button.selected
 	TextToSpeech._stop_dialogue()
@@ -44,73 +42,69 @@ func _on_generate_pressed() -> void:
 		print("Prompt ist leer")
 		return
 
-	var document = _load_txt("res://addons/godot_llama/demo/documents/%s.md" % [document_id]).strip_edges()
-	print(document_id)
-	print(document)
-	var combined_user_message := ""
-
+	var document := _load_txt("res://addons/godot_llama/demo/documents/%s.md" % [document_id]).strip_edges()
+	var combined_user_message := user_text
 	if not document.is_empty():
 		combined_user_message = "Dokument:\n%s\n\nFrage: %s" % [document, user_text]
-	else:
-		combined_user_message = user_text
 
 	var body := {
-		"question": combined_user_message
+		"question": combined_user_message,
+		"prompt": tr("CHATBOT_SYSTEM_PROMPT"),
 	}
-
-	var headers = [
-		"Content-Type: application/json",
-		#"Authorization: Bearer %s" % API_TOKEN
-	]
-
-	var json_body := JSON.stringify(body)
-
-
-	var err = _http.request(
-		API_URL,
-		headers,
-		HTTPClient.METHOD_POST,
-		json_body
-	)
-
+	var headers := PackedStringArray(["Content-Type: application/json"])
+	var err := _http.request(API_URL, headers, HTTPClient.METHOD_POST, JSON.stringify(body))
 	if err != OK:
-		print("HTTP Fehler: ", err)
-		
+		_stop_helper_animation()
+		output_text.text = _request_failed("HTTP %s" % error_string(err))
+		generate_button.disabled = false
+		return
+
+	$VBoxContainer/SubViewportContainer/SubViewport/AnimationPlayer.play("walk_helper")
+	helper.play_think_walk()
 	generate_button.disabled = true
 
 func _on_request_completed(
 	result: int,
 	response_code: int,
-	headers: PackedStringArray,
+	_headers: PackedStringArray,
 	body: PackedByteArray
 ) -> void:
-	$VBoxContainer/SubViewportContainer/SubViewport/AnimationPlayer.stop()
-	helper.play_idle()
+	_stop_helper_animation()
+	generate_button.disabled = false
 	var txt := body.get_string_from_utf8()
 
+	if result != HTTPRequest.RESULT_SUCCESS:
+		output_text.text = _request_failed("result %s" % result)
+		return
 	if response_code != 200:
+		output_text.text = _request_failed("HTTP %s" % response_code)
+		push_warning("Chatbot HTTP %s: %s" % [response_code, txt.left(300)])
 		return
 
 	var json = JSON.parse_string(txt)
-
-	if json == null:
-		print("JSON Fehler")
+	var response_text := _extract_reply(json)
+	if response_text.is_empty():
+		output_text.text = _request_failed("empty response")
 		return
 
+	output_text.text = response_text
+	TextToSpeech._on_dialogue({"text": response_text})
+
+func _extract_reply(json) -> String:
+	if typeof(json) != TYPE_DICTIONARY:
+		return ""
 	if json.has("content"):
-		print('content:')
-		print(json["content"])
-		var response_text = json["content"]
-		output_text.text = response_text
-		
-	if json.has("message"):
-		print('message:')
-		print(json["message"])
-		var response_text = json["message"]["content"]
-		output_text.text = response_text
-	var line = {"text": output_text.text}
-	TextToSpeech._on_dialogue(line)
-	generate_button.disabled = false
+		return str(json["content"]).strip_edges()
+	return ""
+
+func _request_failed(detail: String) -> String:
+	if TranslationServer.get_locale().begins_with("en"):
+		return "The request failed (%s)." % detail
+	return "Die Anfrage ist fehlgeschlagen (%s)." % detail
+
+func _stop_helper_animation() -> void:
+	$VBoxContainer/SubViewportContainer/SubViewport/AnimationPlayer.stop()
+	helper.play_idle()
 
 func _load_txt(path: String) -> String:
 	var file := FileAccess.open(path, FileAccess.READ)