<?php

namespace humhub\modules\donations\services\providers;

use humhub\modules\donations\models\DonationProviderConfig;
use humhub\modules\space\models\Space;
use Yii;

class ProviderCredentialResolver
{
    public static function isSandboxMode(DonationProviderConfig $config): bool
    {
        $settings = self::settingsForConfig($config);
        $value = $settings !== null
            ? $settings->get('sandbox_mode', $config->sandbox_mode ?? 1)
            : ($config->sandbox_mode ?? 1);

        return (int)$value === 1;
    }

    public static function resolvePayPalClientId(DonationProviderConfig $config): string
    {
        return self::resolveModeValue(
            $config,
            'paypal_sandbox_client_id',
            'paypal_live_client_id',
            (string)$config->paypal_client_id
        );
    }

    public static function resolvePayPalClientSecret(DonationProviderConfig $config): string
    {
        return self::resolveModeValue(
            $config,
            'paypal_sandbox_client_secret',
            'paypal_live_client_secret',
            (string)$config->paypal_client_secret
        );
    }

    public static function resolvePayPalWebhookId(DonationProviderConfig $config): string
    {
        return self::resolveModeValue(
            $config,
            'paypal_sandbox_webhook_id',
            'paypal_live_webhook_id',
            (string)$config->paypal_webhook_id
        );
    }

    public static function resolveStripePublishableKey(DonationProviderConfig $config): string
    {
        return self::resolveModeValue(
            $config,
            'stripe_sandbox_publishable_key',
            'stripe_live_publishable_key',
            (string)$config->stripe_publishable_key
        );
    }

    public static function resolveStripeSecretKey(DonationProviderConfig $config): string
    {
        return self::resolveModeValue(
            $config,
            'stripe_sandbox_secret_key',
            'stripe_live_secret_key',
            (string)$config->stripe_secret_key
        );
    }

    public static function resolveStripeWebhookSecret(DonationProviderConfig $config): string
    {
        return self::resolveModeValue(
            $config,
            'stripe_sandbox_webhook_secret',
            'stripe_live_webhook_secret',
            (string)$config->stripe_webhook_secret
        );
    }

    private static function resolveModeValue(
        DonationProviderConfig $config,
        string $sandboxKey,
        string $liveKey,
        string $legacyFallback
    ): string {
        $settings = self::settingsForConfig($config);
        $isSandbox = self::isSandboxMode($config);

        if ($settings === null) {
            return trim($legacyFallback);
        }

        $sandboxValue = trim((string)$settings->get($sandboxKey, ''));
        $liveValue = trim((string)$settings->get($liveKey, ''));
        $legacyValue = trim((string)$settings->get(self::legacyKeyFor($sandboxKey, $liveKey), $legacyFallback));

        if ($isSandbox) {
            return $sandboxValue !== '' ? $sandboxValue : $legacyValue;
        }

        return $liveValue !== '' ? $liveValue : $legacyValue;
    }

    private static function legacyKeyFor(string $sandboxKey, string $liveKey): string
    {
        $map = [
            'paypal_sandbox_client_id' => 'paypal_client_id',
            'paypal_live_client_id' => 'paypal_client_id',
            'paypal_sandbox_client_secret' => 'paypal_client_secret',
            'paypal_live_client_secret' => 'paypal_client_secret',
            'paypal_sandbox_webhook_id' => 'paypal_webhook_id',
            'paypal_live_webhook_id' => 'paypal_webhook_id',
            'stripe_sandbox_publishable_key' => 'stripe_publishable_key',
            'stripe_live_publishable_key' => 'stripe_publishable_key',
            'stripe_sandbox_secret_key' => 'stripe_secret_key',
            'stripe_live_secret_key' => 'stripe_secret_key',
            'stripe_sandbox_webhook_secret' => 'stripe_webhook_secret',
            'stripe_live_webhook_secret' => 'stripe_webhook_secret',
        ];

        return $map[$sandboxKey] ?? ($map[$liveKey] ?? '');
    }

    private static function settingsForConfig(DonationProviderConfig $config)
    {
        $space = Space::findOne(['contentcontainer_id' => (int)$config->contentcontainer_id]);
        if (!$space instanceof Space) {
            return null;
        }

        return Yii::$app->getModule('donations')->settings->contentContainer($space);
    }
}