adding user authentication

db/schema.sql

@@ -0,0 +1,65 @@
+-- OxiCloud Authentication Database Schema
+
+-- Users table
+CREATE TABLE IF NOT EXISTS users (
+    id VARCHAR(36) PRIMARY KEY,
+    username VARCHAR(32) UNIQUE NOT NULL,
+    email VARCHAR(255) UNIQUE NOT NULL,
+    password_hash VARCHAR(255) NOT NULL,
+    role VARCHAR(10) NOT NULL CHECK (role IN ('admin', 'user')),
+    storage_quota_bytes BIGINT NOT NULL DEFAULT 10737418240, -- 10GB default
+    storage_used_bytes BIGINT NOT NULL DEFAULT 0,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    last_login_at TIMESTAMP WITH TIME ZONE,
+    active BOOLEAN NOT NULL DEFAULT TRUE
+);
+
+-- Sessions table for refresh tokens
+CREATE TABLE IF NOT EXISTS sessions (
+    id VARCHAR(36) PRIMARY KEY,
+    user_id VARCHAR(36) NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    refresh_token VARCHAR(255) NOT NULL,
+    expires_at TIMESTAMP WITH TIME ZONE NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    revoked BOOLEAN NOT NULL DEFAULT FALSE,
+    UNIQUE (user_id, refresh_token)
+);
+
+-- File ownership tracking
+CREATE TABLE IF NOT EXISTS file_ownership (
+    file_id VARCHAR(36) PRIMARY KEY,
+    user_id VARCHAR(36) NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    path VARCHAR(1024) NOT NULL,
+    size_bytes BIGINT NOT NULL DEFAULT 0,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE (user_id, path)
+);
+
+-- Folder ownership tracking
+CREATE TABLE IF NOT EXISTS folder_ownership (
+    folder_id VARCHAR(36) PRIMARY KEY,
+    user_id VARCHAR(36) NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    path VARCHAR(1024) NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE (user_id, path)
+);
+
+-- Create admin user (password: Admin123!)
+INSERT INTO users (
+    id, 
+    username, 
+    email, 
+    password_hash, 
+    role, 
+    storage_quota_bytes
+) VALUES (
+    '00000000-0000-0000-0000-000000000000',
+    'admin',
+    'admin@oxicloud.local',
+    '$argon2id$v=19$m=65536,t=3,p=4$c2FsdHNhbHRzYWx0c2FsdA$H3VxE8LL2qPT31DM3loTg6D+O4MSc2sD7GjlQ5h7Jkw', -- Admin123!
+    'admin',
+    107374182400  -- 100GB for admin
+) ON CONFLICT (id) DO NOTHING;