CREATE TABLE IF NOT EXISTS settings (
    `key` VARCHAR(128) NOT NULL PRIMARY KEY,
    `value` TEXT NOT NULL,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS domains (
    id VARCHAR(36) NOT NULL PRIMARY KEY,
    name VARCHAR(253) NOT NULL UNIQUE,
    certificate_type VARCHAR(32) NOT NULL,
    sans_json TEXT NOT NULL,
    status VARCHAR(32) NOT NULL,
    expires_at DATETIME NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS tasks (
    id VARCHAR(36) NOT NULL PRIMARY KEY,
    domain_id VARCHAR(36) NOT NULL,
    task_type VARCHAR(32) NOT NULL,
    status VARCHAR(32) NOT NULL,
    message TEXT NOT NULL,
    started_at DATETIME NULL,
    finished_at DATETIME NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_tasks_domain_id (domain_id)
);

CREATE TABLE IF NOT EXISTS audit_logs (
    id BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY,
    action VARCHAR(64) NOT NULL,
    resource_type VARCHAR(64) NOT NULL,
    resource_id VARCHAR(36) NOT NULL,
    status VARCHAR(32) NOT NULL,
    message TEXT NOT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_audit_logs_created_at (created_at)
);