initialize project with basic structure and dependencies

server/db/index.ts

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+import { drizzle } from "drizzle-orm/better-sqlite3";
+import Database from "better-sqlite3";
+import * as schema from "./schema";
+import { resolve } from "path";
+
+const dbPath = process.env.DATABASE_PATH || resolve(process.cwd(), "revisione.db");
+
+const sqlite = new Database(dbPath);
+sqlite.pragma("journal_mode = WAL");
+sqlite.pragma("foreign_keys = ON");
+
+export const db = drizzle(sqlite, { schema });

server/db/migrate.ts

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+import { migrate } from "drizzle-orm/better-sqlite3/migrator";
+import { db } from "./index";
+import { resolve } from "path";
+
+const migrationsFolder = resolve(process.cwd(), "drizzle");
+
+migrate(db, { migrationsFolder });
+console.log("Migrations complete");

server/db/schema.ts

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+import { sqliteTable, text, integer, real } from "drizzle-orm/sqlite-core";
+import { sql } from "drizzle-orm";
+
+export const courses = sqliteTable("courses", {
+  id: text("id").primaryKey(),
+  title: text("title").notNull(),
+  subject: text("subject").notNull(),
+  status: text("status", { enum: ["processing", "ready", "error"] })
+    .notNull()
+    .default("processing"),
+  stage: text("stage", {
+    enum: ["parsing_pdfs", "analysing_sources", "building_curriculum", "finalising", "ready", "error"],
+  }),
+  costAI: real("cost_ai").default(0),
+  costAudio: real("cost_audio").default(0),
+  auditReport: text("audit_report"),
+  auditScore: integer("audit_score"),
+  organisation: text("organisation"),
+  createdAt: text("created_at")
+    .notNull()
+    .default(sql`(datetime('now'))`),
+});
+
+export const uploads = sqliteTable("uploads", {
+  id: text("id").primaryKey(),
+  courseId: text("course_id")
+    .notNull()
+    .references(() => courses.id),
+  filename: text("filename").notNull(),
+  type: text("type", { enum: ["slides", "past_paper", "lab_worksheet"] }).notNull(),
+  storedPath: text("stored_path").notNull(),
+  extractedText: text("extracted_text"),
+  createdAt: text("created_at")
+    .notNull()
+    .default(sql`(datetime('now'))`),
+});
+
+export const topics = sqliteTable("topics", {
+  id: text("id").primaryKey(),
+  courseId: text("course_id")
+    .notNull()
+    .references(() => courses.id),
+  title: text("title").notNull(),
+  description: text("description").notNull(),
+  order: integer("order").notNull(),
+  prerequisiteTopicIds: text("prerequisite_topic_ids").notNull().default("[]"),
+  difficulty: integer("difficulty").notNull().default(1),
+  relevantFiles: text("relevant_files"),
+});
+
+export const lessons = sqliteTable("lessons", {
+  id: text("id").primaryKey(),
+  topicId: text("topic_id")
+    .notNull()
+    .references(() => topics.id),
+  content: text("content").notNull(),
+  ttsProvider: text("tts_provider"),
+  createdAt: text("created_at")
+    .notNull()
+    .default(sql`(datetime('now'))`),
+});
+
+export const quizQuestions = sqliteTable("quiz_questions", {
+  id: text("id").primaryKey(),
+  topicId: text("topic_id")
+    .notNull()
+    .references(() => topics.id),
+  question: text("question").notNull(),
+  type: text("type", { enum: ["mcq", "short_answer", "worked"] }).notNull(),
+  options: text("options"),
+  answer: text("answer").notNull(),
+  explanation: text("explanation").notNull(),
+});
+
+export const userProgress = sqliteTable("user_progress", {
+  id: text("id").primaryKey(),
+  courseId: text("course_id")
+    .notNull()
+    .references(() => courses.id),
+  topicId: text("topic_id")
+    .notNull()
+    .references(() => topics.id),
+  lessonComplete: integer("lesson_complete", { mode: "boolean" })
+    .notNull()
+    .default(false),
+  quizScore: integer("quiz_score"),
+  tookBranches: integer("took_branches", { mode: "boolean" }).notNull().default(false),
+  branchCount: integer("branch_count").notNull().default(0),
+  updatedAt: text("updated_at")
+    .notNull()
+    .default(sql`(datetime('now'))`),
+});