<?php
/**
 * Currency Ticker — Scrolling Exchange Rate Bar
 * 
 * Displays after breadcrumbs on all pages.
 * Uses Frankfurter API v2 (free, no key required).
 *
 * @package RankwellNews
 * @since 2.1.0
 */

namespace Rankwell\Core;

use Rankwell\Admin\Settings;

if (!defined('ABSPATH')) {
    exit;
}

class CurrencyTicker implements ComponentInterface {

    private const CACHE_DURATION = 2 * HOUR_IN_SECONDS;
    private const API_URL = 'https://api.frankfurter.dev/v2';

    private const CURRENCIES = [
        'NGN' => ['name' => 'Nigerian Naira', 'symbol' => '₦', 'flag' => '🇳🇬'],
        'USD' => ['name' => 'US Dollar', 'symbol' => '$', 'flag' => '🇺🇸'],
        'GBP' => ['name' => 'British Pound', 'symbol' => '£', 'flag' => '🇬🇧'],
        'EUR' => ['name' => 'Euro', 'symbol' => '€', 'flag' => '🇪🇺'],
        'CAD' => ['name' => 'Canadian Dollar', 'symbol' => 'C$', 'flag' => '🇨🇦'],
        'GHS' => ['name' => 'Ghanaian Cedi', 'symbol' => 'GH₵', 'flag' => '🇬🇭'],
        'ZAR' => ['name' => 'South African Rand', 'symbol' => 'R', 'flag' => '🇿🇦'],
        'KES' => ['name' => 'Kenyan Shilling', 'symbol' => 'KSh', 'flag' => '🇰🇪'],
        'JPY' => ['name' => 'Japanese Yen', 'symbol' => '¥', 'flag' => '🇯🇵'],
        'CNY' => ['name' => 'Chinese Yuan', 'symbol' => '¥', 'flag' => '🇨🇳'],
        'AED' => ['name' => 'UAE Dirham', 'symbol' => 'د.إ', 'flag' => '🇦🇪'],
        'INR' => ['name' => 'Indian Rupee', 'symbol' => '₹', 'flag' => '🇮🇳'],
        'SAR' => ['name' => 'Saudi Riyal', 'symbol' => '﷼', 'flag' => '🇸🇦'],
        'CHF' => ['name' => 'Swiss Franc', 'symbol' => 'Fr', 'flag' => '🇨🇭'],
        'AUD' => ['name' => 'Australian Dollar', 'symbol' => 'A$', 'flag' => '🇦🇺'],
    ];

    public static function init(): void {
        if (!Settings::get('currency_ticker_enabled', 1)) {
            return;
        }

        add_action('rankwell_after_breadcrumbs', [__CLASS__, 'render_ticker']);
        add_action('wp_enqueue_scripts', [__CLASS__, 'enqueue_assets']);
    }

    public static function enqueue_assets(): void {
        wp_enqueue_style(
            'rw-currency-ticker',
            RANKWELL_NEWS_URI . '/assets/css/components/_currency-ticker.css',
            [],
            RANKWELL_NEWS_VERSION
        );
    }

    private static function get_rates(): array {
        $cache_key = 'rankwell_currency_rates';
        $rates = get_transient($cache_key);

        if (false !== $rates) {
            return $rates;
        }

        $base    = Settings::get('currency_base', 'NGN');
        $targets = Settings::get('currency_targets', 'USD,GBP,EUR');
        $targets = str_replace(' ', '', strtoupper($targets));

        $url = add_query_arg([
            'base'   => $base,
            'quotes' => $targets,
        ], self::API_URL . '/rates');

        $response = wp_remote_get($url, ['timeout' => 10]);

        if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
            return [];
        }

        $body = json_decode(wp_remote_retrieve_body($response), true);

        if (empty($body) || !is_array($body)) {
            return [];
        }

        // v2 returns array of {date, base, quote, rate} objects
        $rates = [];
        $date  = '';

        foreach ($body as $item) {
            if (empty($item['quote']) || !isset($item['rate'])) {
                continue;
            }
            // Convert: if 1 NGN = 0.00073 USD, show how many NGN per 1 USD
            $rates[$item['quote']] = (float) $item['rate'];
            if (empty($date) && !empty($item['date'])) {
                $date = $item['date'];
            }
        }

        if (empty($rates)) {
            return [];
        }

        $data = [
            'base'  => $base,
            'date'  => $date,
            'rates' => $rates,
        ];

        set_transient($cache_key, $data, self::CACHE_DURATION);

        return $data;
    }

    public static function render_ticker(): void {
        $data = self::get_rates();

        if (empty($data['rates'])) {
            return;
        }

        $base  = $data['base'];
        $rates = $data['rates'];
        ?>
        <div class="rn-currency-ticker" data-base="<?php echo esc_attr($base); ?>">
            <div class="rn-currency-ticker-inner">
                <span class="rn-currency-ticker-label">
                    <?php echo esc_html(self::CURRENCIES[$base]['flag'] ?? ''); ?>
                    <?php esc_html_e('Exchange Rates', 'rankwell-news'); ?>
                </span>

                <div class="rn-currency-ticker-track">
                    <?php // First set — visible ?>
                    <?php foreach ($rates as $code => $rate): ?>
                        <span class="rn-currency-ticker-item">
                            <?php echo esc_html(self::CURRENCIES[$code]['flag'] ?? ''); ?>
                            <strong><?php echo esc_html($code); ?></strong>
                            <?php echo esc_html(number_format(1 / $rate, 2)); ?>
                            <?php echo esc_html(self::CURRENCIES[$base]['symbol'] ?? ''); ?>
                        </span>
                    <?php endforeach; ?>

                    <?php // Duplicate set — for seamless loop ?>
                    <?php foreach ($rates as $code => $rate): ?>
                        <span class="rn-currency-ticker-item" aria-hidden="true">
                            <?php echo esc_html(self::CURRENCIES[$code]['flag'] ?? ''); ?>
                            <strong><?php echo esc_html($code); ?></strong>
                            <?php echo esc_html(number_format(1 / $rate, 2)); ?>
                            <?php echo esc_html(self::CURRENCIES[$base]['symbol'] ?? ''); ?>
                        </span>
                    <?php endforeach; ?>
                </div>
            </div>
        </div>
        <?php
    }

    public static function get_currency_options(): array {
        $options = [];
        foreach (self::CURRENCIES as $code => $data) {
            $options[$code] = sprintf('%s %s (%s)', $data['flag'], $data['name'], $code);
        }
        return $options;
    }
}﻿<?php
/**
 * Currency Ticker — Scrolling Exchange Rate Bar
 * 
 * Displays after breadcrumbs on all pages.
 * Uses Frankfurter API v2 (free, no key required).
 *
 * @package RankwellNews
 * @since 2.1.0
 */

namespace Rankwell\Core;

use Rankwell\Admin\Settings;

if (!defined('ABSPATH')) {
    exit;
}

class CurrencyTicker implements ComponentInterface {

    private const CACHE_DURATION = 2 * HOUR_IN_SECONDS;
    private const API_URL = 'https://api.frankfurter.dev/v2';

    private const CURRENCIES = [
        'NGN' => ['name' => 'Nigerian Naira', 'symbol' => '₦', 'flag' => '🇳🇬'],
        'USD' => ['name' => 'US Dollar', 'symbol' => '$', 'flag' => '🇺🇸'],
        'GBP' => ['name' => 'British Pound', 'symbol' => '£', 'flag' => '🇬🇧'],
        'EUR' => ['name' => 'Euro', 'symbol' => '€', 'flag' => '🇪🇺'],
        'CAD' => ['name' => 'Canadian Dollar', 'symbol' => 'C$', 'flag' => '🇨🇦'],
        'GHS' => ['name' => 'Ghanaian Cedi', 'symbol' => 'GH₵', 'flag' => '🇬🇭'],
        'ZAR' => ['name' => 'South African Rand', 'symbol' => 'R', 'flag' => '🇿🇦'],
        'KES' => ['name' => 'Kenyan Shilling', 'symbol' => 'KSh', 'flag' => '🇰🇪'],
        'JPY' => ['name' => 'Japanese Yen', 'symbol' => '¥', 'flag' => '🇯🇵'],
        'CNY' => ['name' => 'Chinese Yuan', 'symbol' => '¥', 'flag' => '🇨🇳'],
        'AED' => ['name' => 'UAE Dirham', 'symbol' => 'د.إ', 'flag' => '🇦🇪'],
        'INR' => ['name' => 'Indian Rupee', 'symbol' => '₹', 'flag' => '🇮🇳'],
        'SAR' => ['name' => 'Saudi Riyal', 'symbol' => '﷼', 'flag' => '🇸🇦'],
        'CHF' => ['name' => 'Swiss Franc', 'symbol' => 'Fr', 'flag' => '🇨🇭'],
        'AUD' => ['name' => 'Australian Dollar', 'symbol' => 'A$', 'flag' => '🇦🇺'],
    ];

    public static function init(): void {
        if (!Settings::get('currency_ticker_enabled', 1)) {
            return;
        }

        add_action('rankwell_after_breadcrumbs', [__CLASS__, 'render_ticker']);
        add_action('wp_enqueue_scripts', [__CLASS__, 'enqueue_assets']);
    }

    public static function enqueue_assets(): void {
        wp_enqueue_style(
            'rw-currency-ticker',
            RANKWELL_NEWS_URI . '/assets/css/components/_currency-ticker.css',
            [],
            RANKWELL_NEWS_VERSION
        );
    }

    private static function get_rates(): array {
        $cache_key = 'rankwell_currency_rates';
        $rates = get_transient($cache_key);

        if (false !== $rates) {
            return $rates;
        }

        $base    = Settings::get('currency_base', 'NGN');
        $targets = Settings::get('currency_targets', 'USD,GBP,EUR');
        $targets = str_replace(' ', '', strtoupper($targets));

        $url = add_query_arg([
            'base'   => $base,
            'quotes' => $targets,
        ], self::API_URL . '/rates');

        $response = wp_remote_get($url, ['timeout' => 10]);

        if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
            return [];
        }

        $body = json_decode(wp_remote_retrieve_body($response), true);

        if (empty($body) || !is_array($body)) {
            return [];
        }

        // v2 returns array of {date, base, quote, rate} objects
        $rates = [];
        $date  = '';

        foreach ($body as $item) {
            if (empty($item['quote']) || !isset($item['rate'])) {
                continue;
            }
            // Convert: if 1 NGN = 0.00073 USD, show how many NGN per 1 USD
            $rates[$item['quote']] = (float) $item['rate'];
            if (empty($date) && !empty($item['date'])) {
                $date = $item['date'];
            }
        }

        if (empty($rates)) {
            return [];
        }

        $data = [
            'base'  => $base,
            'date'  => $date,
            'rates' => $rates,
        ];

        set_transient($cache_key, $data, self::CACHE_DURATION);

        return $data;
    }

    public static function render_ticker(): void {
        $data = self::get_rates();

        if (empty($data['rates'])) {
            return;
        }

        $base  = $data['base'];
        $rates = $data['rates'];
        ?>
        <div class="rn-currency-ticker" data-base="<?php echo esc_attr($base); ?>">
            <div class="rn-currency-ticker-inner">
                <span class="rn-currency-ticker-label">
                    <?php echo esc_html(self::CURRENCIES[$base]['flag'] ?? ''); ?>
                    <?php esc_html_e('Exchange Rates', 'rankwell-news'); ?>
                </span>

                <div class="rn-currency-ticker-track">
                    <?php // First set — visible ?>
                    <?php foreach ($rates as $code => $rate): ?>
                        <span class="rn-currency-ticker-item">
                            <?php echo esc_html(self::CURRENCIES[$code]['flag'] ?? ''); ?>
                            <strong><?php echo esc_html($code); ?></strong>
                            <?php echo esc_html(number_format(1 / $rate, 2)); ?>
                            <?php echo esc_html(self::CURRENCIES[$base]['symbol'] ?? ''); ?>
                        </span>
                    <?php endforeach; ?>

                    <?php // Duplicate set — for seamless loop ?>
                    <?php foreach ($rates as $code => $rate): ?>
                        <span class="rn-currency-ticker-item" aria-hidden="true">
                            <?php echo esc_html(self::CURRENCIES[$code]['flag'] ?? ''); ?>
                            <strong><?php echo esc_html($code); ?></strong>
                            <?php echo esc_html(number_format(1 / $rate, 2)); ?>
                            <?php echo esc_html(self::CURRENCIES[$base]['symbol'] ?? ''); ?>
                        </span>
                    <?php endforeach; ?>
                </div>
            </div>
        </div>
        <?php
    }

    public static function get_currency_options(): array {
        $options = [];
        foreach (self::CURRENCIES as $code => $data) {
            $options[$code] = sprintf('%s %s (%s)', $data['flag'], $data['name'], $code);
        }
        return $options;
    }
}