Module Update
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SpecialX
236
scripts/seed.ts
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236
scripts/seed.ts
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import "dotenv/config";
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import { db } from "../src/shared/db";
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import {
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users, roles, usersToRoles,
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questions, knowledgePoints, questionsToKnowledgePoints,
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exams, examQuestions, examSubmissions, submissionAnswers,
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textbooks, chapters
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} from "../src/shared/db/schema";
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import { createId } from "@paralleldrive/cuid2";
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import { faker } from "@faker-js/faker";
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import { sql } from "drizzle-orm";
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/**
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* Enterprise-Grade Seed Script for Next_Edu
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*
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* Scenarios Covered:
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* 1. IAM: RBAC with multiple roles (Teacher & Grade Head).
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* 2. Knowledge Graph: Nested Knowledge Points (Math -> Algebra -> Linear Equations).
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* 3. Question Bank: Rich Text Content & Nested Questions (Reading Comprehension).
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* 4. Exams: JSON Structure for Sectioning.
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*/
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async function seed() {
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console.log("🌱 Starting Database Seed...");
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const start = performance.now();
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// --- 0. Cleanup (Optional: Truncate tables for fresh start) ---
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// Note: Order matters due to foreign keys if checks are enabled.
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// Ideally, use: SET FOREIGN_KEY_CHECKS = 0;
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try {
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await db.execute(sql`SET FOREIGN_KEY_CHECKS = 0;`);
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const tables = [
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"submission_answers", "exam_submissions", "exam_questions", "exams",
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"questions_to_knowledge_points", "questions", "knowledge_points",
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"chapters", "textbooks",
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"users_to_roles", "roles", "users", "accounts", "sessions"
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];
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for (const table of tables) {
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await db.execute(sql.raw(`TRUNCATE TABLE \`${table}\`;`));
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}
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await db.execute(sql`SET FOREIGN_KEY_CHECKS = 1;`);
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console.log("🧹 Cleaned up existing data.");
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} catch (e) {
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console.warn("⚠️ Cleanup warning (might be fresh DB):", e);
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}
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// --- 1. IAM & Roles ---
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console.log("👤 Seeding IAM...");
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// Roles
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const roleMap = {
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admin: "role_admin",
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teacher: "role_teacher",
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student: "role_student",
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grade_head: "role_grade_head"
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};
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await db.insert(roles).values([
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{ id: roleMap.admin, name: "admin", description: "System Administrator" },
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{ id: roleMap.teacher, name: "teacher", description: "Academic Instructor" },
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{ id: roleMap.student, name: "student", description: "Learner" },
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{ id: roleMap.grade_head, name: "grade_head", description: "Head of Grade Year" }
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]);
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// Users
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const usersData = [
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{
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id: "user_admin",
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name: "Admin User",
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email: "admin@next-edu.com",
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role: "admin", // Legacy field
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image: "https://api.dicebear.com/7.x/avataaars/svg?seed=Admin"
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},
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{
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id: "user_teacher_math",
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name: "Mr. Math",
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email: "math@next-edu.com",
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role: "teacher",
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image: "https://api.dicebear.com/7.x/avataaars/svg?seed=Math"
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},
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{
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id: "user_student_1",
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name: "Alice Student",
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email: "alice@next-edu.com",
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role: "student",
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image: "https://api.dicebear.com/7.x/avataaars/svg?seed=Alice"
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}
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];
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await db.insert(users).values(usersData);
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// Assign Roles (RBAC)
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await db.insert(usersToRoles).values([
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{ userId: "user_admin", roleId: roleMap.admin },
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{ userId: "user_teacher_math", roleId: roleMap.teacher },
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// Math teacher is also a Grade Head
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{ userId: "user_teacher_math", roleId: roleMap.grade_head },
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{ userId: "user_student_1", roleId: roleMap.student },
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]);
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// --- 2. Knowledge Graph (Tree) ---
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console.log("🧠 Seeding Knowledge Graph...");
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const kpMathId = createId();
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const kpAlgebraId = createId();
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const kpLinearId = createId();
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await db.insert(knowledgePoints).values([
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{ id: kpMathId, name: "Mathematics", level: 0 },
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{ id: kpAlgebraId, name: "Algebra", parentId: kpMathId, level: 1 },
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{ id: kpLinearId, name: "Linear Equations", parentId: kpAlgebraId, level: 2 },
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]);
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// --- 3. Question Bank (Rich Content) ---
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console.log("📚 Seeding Question Bank...");
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// 3.1 Simple Single Choice
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const qSimpleId = createId();
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await db.insert(questions).values({
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id: qSimpleId,
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authorId: "user_teacher_math",
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type: "single_choice",
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difficulty: 1,
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content: {
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text: "What is 2 + 2?",
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options: [
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{ id: "A", text: "3", isCorrect: false },
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{ id: "B", text: "4", isCorrect: true },
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{ id: "C", text: "5", isCorrect: false }
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]
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}
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});
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// Link to KP
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await db.insert(questionsToKnowledgePoints).values({
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questionId: qSimpleId,
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knowledgePointId: kpLinearId // Just for demo
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});
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// 3.2 Composite Question (Reading Comprehension)
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const qParentId = createId();
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const qChild1Id = createId();
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const qChild2Id = createId();
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// Parent (Passage)
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await db.insert(questions).values({
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id: qParentId,
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authorId: "user_teacher_math",
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type: "composite",
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difficulty: 3,
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content: {
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text: "Read the following passage about Algebra...\n(Long text here)...",
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assets: []
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}
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});
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// Children
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await db.insert(questions).values([
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{
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id: qChild1Id,
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authorId: "user_teacher_math",
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parentId: qParentId, // <--- Key: Nested
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type: "single_choice",
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difficulty: 2,
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content: {
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text: "What is the main topic?",
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options: [
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{ id: "A", text: "Geometry", isCorrect: false },
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{ id: "B", text: "Algebra", isCorrect: true }
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]
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}
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},
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{
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id: qChild2Id,
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authorId: "user_teacher_math",
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parentId: qParentId,
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type: "text",
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difficulty: 4,
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content: {
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text: "Explain the concept of variables.",
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}
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}
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]);
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// --- 4. Exams (New Structure) ---
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console.log("📝 Seeding Exams...");
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const examId = createId();
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const examStructure = [
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{
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type: "group",
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title: "Part 1: Basics",
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children: [
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{ type: "question", questionId: qSimpleId, score: 10 }
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]
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},
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{
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type: "group",
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title: "Part 2: Reading",
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children: [
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// For composite questions, we usually add the parent, and the system fetches children
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{ type: "question", questionId: qParentId, score: 20 }
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]
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}
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];
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await db.insert(exams).values({
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id: examId,
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title: "Algebra Mid-Term 2025",
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description: "Comprehensive assessment",
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creatorId: "user_teacher_math",
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status: "published",
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startTime: new Date(),
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structure: examStructure as any // Bypass strict typing for seed
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});
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// Link questions physically (Source of Truth)
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await db.insert(examQuestions).values([
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{ examId, questionId: qSimpleId, score: 10, order: 0 },
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{ examId, questionId: qParentId, score: 20, order: 1 },
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// Note: Child questions are often implicitly included or explicitly added depending on logic.
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// For this seed, we assume linking Parent is enough for the relation,
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// but let's link children too for completeness if the query strategy requires it.
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{ examId, questionId: qChild1Id, score: 0, order: 2 },
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{ examId, questionId: qChild2Id, score: 0, order: 3 },
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]);
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const end = performance.now();
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console.log(`✅ Seed completed in ${(end - start).toFixed(2)}ms`);
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process.exit(0);
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}
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seed().catch((err) => {
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console.error("❌ Seed failed:", err);
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process.exit(1);
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});
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