refactor: move codes into src folder

src/store/assistant.ts

@@ -0,0 +1,30 @@
+import { first } from "lodash-es";
+import { Id, User } from "@/types";
+
+// Assistant is a special user.
+export const assistantList: User[] = [
+  {
+    id: "sql-assistant",
+    name: "SQL Chat",
+    description: "🤖️ I'm an expert in SQL. I can answer your questions about databases and SQL.",
+    avatar: "",
+  },
+];
+
+export const getAssistantById = (id: Id) => {
+  const user = assistantList.find((user) => user.id === id);
+  return user || (first(assistantList) as User);
+};
+
+// getPromptOfAssistant define the special prompt for each assistant.
+export const getPromptGeneratorOfAssistant = (assistant: User) => {
+  const basicPrompt = `Please follow the instructions to answer the questions:
+1. Set the language to the markdown code block for each code block. For example, \`SELECT * FROM table\` is SQL.
+2. Please be careful to return only key information, and try not to make it too long.
+`;
+  if (assistant.id === "sql-assistant") {
+    return (schema: string) =>
+      `This is my database schema"${schema}". You will see the tables and columns in the database. And please answer the following questions about the database.\n${basicPrompt}`;
+  }
+  return () => `\n${basicPrompt}`;
+};