CREATE TABLE IF NOT EXISTS users (
    id SERIAL PRIMARY KEY,
    username TEXT NOT NULL UNIQUE,
    race_key TEXT NOT NULL DEFAULT 'human',
    created_at TIMESTAMP NOT NULL DEFAULT NOW()
);

CREATE TABLE IF NOT EXISTS planets (
    id SERIAL PRIMARY KEY,
    user_id INT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    name TEXT NOT NULL,
    class_key TEXT NOT NULL,
    planet_seed INT NOT NULL DEFAULT 0,
    temperature_c INT NOT NULL DEFAULT 0,
    modifiers TEXT NOT NULL,
    resources TEXT NOT NULL,
    last_resource_update_at TIMESTAMP NOT NULL,
    created_at TIMESTAMP NOT NULL DEFAULT NOW()
);

CREATE TABLE IF NOT EXISTS planet_buildings (
    id SERIAL PRIMARY KEY,
    planet_id INT NOT NULL REFERENCES planets(id) ON DELETE CASCADE,
    building_key TEXT NOT NULL,
    count INT NOT NULL DEFAULT 0,
    level INT NOT NULL DEFAULT 0,
    UNIQUE (planet_id, building_key)
);

CREATE TABLE IF NOT EXISTS build_jobs (
    id SERIAL PRIMARY KEY,
    planet_id INT NOT NULL REFERENCES planets(id) ON DELETE CASCADE,
    building_key TEXT NOT NULL,
    mode TEXT NOT NULL,
    delta_count INT,
    target_level INT,
    started_at TIMESTAMP NOT NULL,
    finish_at TIMESTAMP NOT NULL,
    slot_index INT NOT NULL
);

CREATE TABLE IF NOT EXISTS roles (
    id SERIAL PRIMARY KEY,
    key TEXT NOT NULL UNIQUE,
    name TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS permissions (
    id SERIAL PRIMARY KEY,
    key TEXT NOT NULL UNIQUE,
    module TEXT NOT NULL,
    description TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS role_permissions (
    role_id INT NOT NULL REFERENCES roles(id) ON DELETE CASCADE,
    permission_id INT NOT NULL REFERENCES permissions(id) ON DELETE CASCADE,
    PRIMARY KEY (role_id, permission_id)
);

CREATE TABLE IF NOT EXISTS user_roles (
    user_id INT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    role_id INT NOT NULL REFERENCES roles(id) ON DELETE CASCADE,
    PRIMARY KEY (user_id, role_id)
);

CREATE TABLE IF NOT EXISTS user_permission_overrides (
    user_id INT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    permission_id INT NOT NULL REFERENCES permissions(id) ON DELETE CASCADE,
    effect TEXT NOT NULL CHECK (effect IN ('allow', 'deny')),
    PRIMARY KEY (user_id, permission_id)
);