<?php

namespace ArrayFunnel\Features\Analytics\REST;

use ArrayFunnel\Features\Analytics\Services\AnalyticsQuery;
use ArrayFunnel\Supports\BaseRestController;

defined('ABSPATH') || exit;

/**
 * Serves the locally recorded conversion metrics to the admin dashboard.
 */
final class AnalyticsController extends BaseRestController
{
    public function registerRoutes(): void
    {
        register_rest_route($this->namespace, '/analytics/overview', [[
            'methods' => \WP_REST_Server::READABLE,
            'callback' => [$this, 'getOverview'],
            'permission_callback' => [$this, 'checkPermission'],
            'args' => $this->dateRangeArguments(),
        ]]);

        register_rest_route($this->namespace, '/analytics/revenue', [[
            'methods' => \WP_REST_Server::READABLE,
            'callback' => [$this, 'getRevenueChart'],
            'permission_callback' => [$this, 'checkPermission'],
            'args' => $this->dateRangeArguments(),
        ]]);

        register_rest_route($this->namespace, '/analytics/events', [[
            'methods' => \WP_REST_Server::READABLE,
            'callback' => [$this, 'getEvents'],
            'permission_callback' => [$this, 'checkPermission'],
            'args' => $this->dateRangeArguments(),
        ]]);
    }

    public function getOverview(\WP_REST_Request $request): \WP_REST_Response
    {
        $days = max(1, (int) $request->get_param('days'));
        return $this->success((new AnalyticsQuery())->getOverview($days), 200, [
            'days' => $days,
            'currency' => $this->currencyMeta(),
        ]);
    }

    public function getRevenueChart(\WP_REST_Request $request): \WP_REST_Response
    {
        $days = max(1, (int) $request->get_param('days'));
        return $this->success((new AnalyticsQuery())->getRevenueChart($days), 200, [
            'days' => $days,
            'currency' => $this->currencyMeta(),
        ]);
    }

    public function getEvents(\WP_REST_Request $request): \WP_REST_Response
    {
        $days = max(1, (int) $request->get_param('days'));
        return $this->success((new AnalyticsQuery())->getEventsLog(50, 0, $days));
    }

    private function dateRangeArguments(): array
    {
        return [
            'days' => [
                'default' => 7,
                'sanitize_callback' => 'absint',
                'validate_callback' => static fn($value): bool => (int) $value >= 1,
            ],
        ];
    }

    private function currencyMeta(): array
    {
        return [
            'code' => get_woocommerce_currency(),
            'symbol' => get_woocommerce_currency_symbol(),
            'position' => get_option('woocommerce_currency_pos'),
        ];
    }
}