feat(openai): add chat streaming and model commands

- add /openai (/chatgpt) chat command using OpenAI Responses API (streaming + incremental edits)
- add /openAIListModels, /openAIGetModel, /openAISetModel
- introduce base Command class and migrate non-chat commands to it
- wire OpenAI client + env vars (OPENAI_API_KEY, OPENAI_MODEL)
- bump deps (@google/genai, systeminformation, @types/node) and add openai

src/commands/openai-chat.ts

@@ -0,0 +1,160 @@
+import {Message} from "typescript-telegram-bot-api";
+import {MessageStore} from "../common/message-store";
+import {
+    collectReplyChainText,
+    escapeMarkdownV2Text,
+    logError,
+    replyToMessage,
+    startIntervalEditor
+} from "../util/utils";
+import {Environment} from "../common/environment";
+import {bot, openAi} from "../index";
+import {Requirements} from "../base/requirements";
+import {Requirement} from "../base/requirement";
+import {ChatCommand} from "../base/chat-command";
+
+export class OpenAIChat extends ChatCommand {
+    command = ["openai", "chatgpt"];
+    argsMode = "required" as const;
+
+    requirements = Requirements.Build(Requirement.BOT_CREATOR);
+
+    async execute(msg: Message, match?: RegExpExecArray): Promise<void> {
+        console.log("OpenAI Chat: ", match);
+        return this.executeOpenAI(msg, match?.[3]);
+    }
+
+    async executeOpenAI(msg: Message, text: string): Promise<void> {
+        if (!text || text.trim().length === 0) return;
+
+        const chatId = msg.chat.id;
+
+        const storedMsg = await MessageStore.get(chatId, msg.message_id);
+        const messageParts = await collectReplyChainText(storedMsg);
+        console.log("MESSAGE PARTS", messageParts);
+
+        const chatMessages = messageParts.map(part => {
+            const content = [];
+            content.push({
+                type: "input_text",
+                text: (Environment.USE_NAMES_IN_PROMPT && !part.bot ? `MESSAGE FROM USER "${part.name}":\n` : "") + part.content,
+            });
+
+            // TODO: 03/02/2026, Danil Nikolaev: upload file then add here
+            // for (const image of part.images) {
+            //     content.push({
+            //         type: "image_url",
+            //         imageUrl: "data:image/jpeg;base64," + image
+            //     });
+            // }
+
+            return {
+                role: part.bot ? "assistant" : "user",
+                content: content,
+                type: "message",
+            };
+        });
+        chatMessages.reverse();
+        chatMessages.unshift({
+            role: "system",
+            content: [{type: "input_text", text: Environment.SYSTEM_PROMPT}],
+            type: "message"
+        });
+
+        let waitMessage: Message;
+
+        const startTime = Date.now();
+
+        try {
+            waitMessage = await bot.sendMessage({
+                chat_id: chatId,
+                text: Environment.waitText,
+                reply_parameters: {
+                    chat_id: chatId,
+                    message_id: msg.message_id
+                }
+            });
+
+            const stream = await openAi.responses.create({
+                model: Environment.OPENAI_MODEL,
+                // eslint-disable-next-line @typescript-eslint/no-explicit-any
+                input: chatMessages as any,
+                stream: true
+            });
+
+            let currentText = "";
+            let shouldBreak = false;
+
+            const editor = startIntervalEditor({
+                intervalMs: 4500,
+                getText: () => currentText,
+                editFn: async (text) => {
+                    await bot.editMessageText(
+                        {
+                            chat_id: chatId,
+                            message_id: waitMessage.message_id,
+                            text: escapeMarkdownV2Text(text),
+                            parse_mode: "Markdown"
+                        }
+                    ).catch(logError);
+
+                    console.log("editMessageText", text);
+
+                    waitMessage.reply_to_message = msg;
+                    waitMessage.text = text;
+                    await MessageStore.put(waitMessage);
+                },
+                onStop: async () => {
+                }
+            });
+            await editor.tick();
+
+            try {
+                for await (const chunk of stream) {
+                    console.log("chunk", chunk);
+
+                    if (chunk.type === "response.output_text.delta") {
+                        const text = chunk.delta;
+                        currentText += text;
+
+                        if (currentText.length > 4096) {
+                            currentText = currentText.slice(0, 4093) + "...";
+                            shouldBreak = true;
+                        }
+
+                        console.log("messageText", currentText);
+                        console.log("length", currentText.length);
+
+                        if (shouldBreak) {
+                            console.log("break", true);
+                            break;
+                        }
+                    }
+
+
+                }
+            } finally {
+                await editor.tick();
+                await editor.stop();
+
+                if (!shouldBreak) {
+                    console.log("ended", true);
+                }
+
+                const diff = Math.abs(Date.now() - startTime) / 1000.0;
+                console.log("time", diff);
+
+                waitMessage.reply_to_message = msg;
+                waitMessage.text = currentText;
+                await MessageStore.put(waitMessage);
+                await replyToMessage({message: waitMessage, text: `⏱️ ${diff}s`});
+            }
+        } catch (error) {
+            logError(error);
+            await replyToMessage({
+                message: waitMessage,
+                text: `Произошла ошибка!\n${error.toString()}`
+            }).catch(logError);
+        }
+    }
+}