<?php
/**
 * Activation routine.
 *
 * @package ProfitEngine
 */

declare( strict_types=1 );

namespace ProfitEngine\Infrastructure;

use ProfitEngine\Infrastructure\Migrations\MigrationRunner;
use ProfitEngine\Support\Capabilities;

defined( 'ABSPATH' ) || exit;

/**
 * Runs on plugin activation: installs tables, grants capabilities, seeds
 * default settings, and flags that a migration check should run on next boot.
 */
class Activator {

	/**
	 * Perform activation tasks.
	 */
	public static function activate(): void {
		// Build the schema up to the current DB version.
		( new MigrationRunner( new Logger() ) )->run();

		// Grant the management capability.
		Capabilities::grant();

		// Seed default settings without overwriting existing ones.
		self::seed_settings();

		// Record install metadata (useful for support/migrations).
		if ( false === get_option( 'profit_engine_installed_at' ) ) {
			add_option( 'profit_engine_installed_at', gmdate( 'Y-m-d H:i:s' ), '', false );
		}
		update_option( 'profit_engine_version', PROFIT_ENGINE_VERSION, false );

		// Ensure rewrite/REST routes are fresh.
		flush_rewrite_rules();
	}

	/**
	 * Seed default plugin settings if absent.
	 */
	private static function seed_settings(): void {
		if ( false !== get_option( 'profit_engine_settings' ) ) {
			return;
		}

		$defaults = array(
			'cost_basis'               => 'average', // 'average' | 'last' (merchant-configurable).
			'tax_in_profit'            => false,      // Exclude tax from profit by default.
			'forecast_window'          => 30,         // Days of sales history for velocity.
			'coverage_days'            => 30,         // How far ahead to stock beyond lead time.
			'safety_days'              => 7,          // Fallback safety stock (auto) in days of demand.
			'default_lead_time'        => 7,          // Used when supplier lead time is unset.
			'payment_fee_percent'      => 0,          // Default gateway fee percentage.
			'payment_fee_fixed'        => 0,          // Default gateway fixed fee.
			'shipping_alloc'           => 'value',    // 'value' | 'none' allocation basis.
			'other_cost_percent'       => 0,          // Other cost as % of revenue.
			'other_cost_fixed'         => 0,          // Other fixed cost per order.
			'delete_data_on_uninstall' => false, // Opt-in destructive uninstall.
		);

		add_option( 'profit_engine_settings', $defaults, '', false );
	}
}