-- Users table
CREATE TABLE users (
    id TEXT PRIMARY KEY,
    username TEXT UNIQUE NOT NULL,
    password_hash TEXT NOT NULL,
    role TEXT NOT NULL,
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL
);

-- User profiles table
CREATE TABLE user_profiles (
    user_id TEXT PRIMARY KEY,
    avatar_path TEXT,
    bio TEXT,
    preferences_json TEXT NOT NULL DEFAULT '{}',
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL,
    FOREIGN KEY (user_id) REFERENCES users(id)
);

-- User library access table
CREATE TABLE user_libraries (
    user_id TEXT NOT NULL,
    root_path TEXT NOT NULL,
    permission TEXT NOT NULL,
    granted_at TEXT NOT NULL,
    PRIMARY KEY (user_id, root_path),
    FOREIGN KEY (user_id) REFERENCES users(id)
);

-- Indexes for efficient lookups
CREATE INDEX idx_users_username ON users(username);
CREATE INDEX idx_user_libraries_user_id ON user_libraries(user_id);
CREATE INDEX idx_user_libraries_root_path ON user_libraries(root_path);