Snapshot: full project state

2026-10-06 23:43:43 -07:00
commit fc6d00988c
13 changed files with 1283 additions and 0 deletions
--- a/pettalk-auth-db.ts
+++ b/pettalk-auth-db.ts
@@ -0,0 +1,113 @@
+import fs from "fs";
+import path from "path";
+import bcrypt from "bcryptjs";
+
+const DATA_DIR = path.join(process.cwd(), "data");
+const USERS_FILE = path.join(DATA_DIR, "users.json");
+
+export interface UserRow {
+  id: number;
+  username: string;
+  email: string;
+  password_hash: string;
+  created_at: string;
+}
+
+export interface UserPublic {
+  id: number;
+  username: string;
+  email: string;
+  created_at: string;
+}
+
+function ensureDataDir() {
+  if (!fs.existsSync(DATA_DIR)) {
+    fs.mkdirSync(DATA_DIR, { recursive: true });
+  }
+}
+
+function readUsers(): UserRow[] {
+  ensureDataDir();
+  if (!fs.existsSync(USERS_FILE)) {
+    return [];
+  }
+  try {
+    const raw = fs.readFileSync(USERS_FILE, "utf-8");
+    return JSON.parse(raw);
+  } catch {
+    return [];
+  }
+}
+
+function writeUsers(users: UserRow[]) {
+  ensureDataDir();
+  fs.writeFileSync(USERS_FILE, JSON.stringify(users, null, 2), "utf-8");
+}
+
+let nextId = 0;
+function getNextId(): number {
+  if (nextId === 0) {
+    const users = readUsers();
+    nextId = users.reduce((max, u) => Math.max(max, u.id), 0) + 1;
+  }
+  return nextId++;
+}
+
+export function createUser(username: string, email: string, password: string): UserPublic {
+  const users = readUsers();
+
+  if (users.find((u) => u.email === email || u.username === username)) {
+    throw new Error("A user with that email or username already exists.");
+  }
+
+  const password_hash = bcrypt.hashSync(password, 10);
+  const newUser: UserRow = {
+    id: getNextId(),
+    username,
+    email,
+    password_hash,
+    created_at: new Date().toISOString(),
+  };
+
+  users.push(newUser);
+  writeUsers(users);
+
+  return {
+    id: newUser.id,
+    username: newUser.username,
+    email: newUser.email,
+    created_at: newUser.created_at,
+  };
+}
+
+export function authenticateUser(email: string, password: string): UserPublic {
+  const users = readUsers();
+  const user = users.find((u) => u.email === email);
+
+  if (!user) {
+    throw new Error("Invalid email or password.");
+  }
+
+  if (!bcrypt.compareSync(password, user.password_hash)) {
+    throw new Error("Invalid email or password.");
+  }
+
+  return {
+    id: user.id,
+    username: user.username,
+    email: user.email,
+    created_at: user.created_at,
+  };
+}
+
+export function getUserById(id: number): UserPublic | null {
+  const users = readUsers();
+  const user = users.find((u) => u.id === id);
+  if (!user) return null;
+  return {
+    id: user.id,
+    username: user.username,
+    email: user.email,
+    created_at: user.created_at,
+  };
+}