From eaf623ae4673c18e4f0554dd90020e27bbb3fe54 Mon Sep 17 00:00:00 2001
From: Martien <hello@martien.io>
Date: Mon, 16 Jun 2025 10:15:45 +0200
Subject: [PATCH] Initial commit

---
 mempool-info/mempool-info.php | 84 +++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 mempool-info/mempool-info.php

diff --git a/mempool-info/mempool-info.php b/mempool-info/mempool-info.php
new file mode 100644
index 0000000..db3ebb9
--- /dev/null
+++ b/mempool-info/mempool-info.php
@@ -0,0 +1,84 @@
+<?php
+/*
+Plugin Name: Mempool Info
+Description: Show current Bitcoin block height and transaction fee estimates from a configurable mempool.space API endpoint.
+Version: 0.2
+Author: Martien.io
+*/
+
+// Settings page
+add_action('admin_menu', function() {
+    add_options_page('Mempool Info Settings', 'Mempool Info', 'manage_options', 'mempool-info', 'mempool_info_settings_page');
+});
+add_action('admin_init', function() {
+    register_setting('mempool_info_options', 'mempool_api_url');
+});
+function mempool_info_settings_page() {
+    ?>
+    <div class="wrap">
+        <h1>Mempool Info Settings</h1>
+        <form method="post" action="options.php">
+            <?php settings_fields('mempool_info_options'); ?>
+            <?php do_settings_sections('mempool_info_options'); ?>
+            <table class="form-table">
+                <tr valign="top">
+                    <th scope="row">Mempool API Base URL</th>
+                    <td>
+                        <input type="text" name="mempool_api_url" value="<?php echo esc_attr(get_option('mempool_api_url', 'https://mempool.space/api')); ?>" size="40"/>
+                        <p class="description">Example: <code>https://mempool.space/api</code> or your own hosted API endpoint.</p>
+                    </td>
+                </tr>
+            </table>
+            <?php submit_button(); ?>
+        </form>
+    </div>
+    <?php
+}
+
+// Helper function to get API base url
+function mempool_api_url($endpoint = '') {
+    $base = rtrim(get_option('mempool_api_url', 'https://mempool.space/api'), '/');
+    return $base . $endpoint;
+}
+
+// Block height shortcode
+add_shortcode('mempool_block_height', function() {
+    $block_url = mempool_api_url('/blocks');
+    $block_response = wp_remote_get($block_url);
+
+    if (is_wp_error($block_response)) {
+        return "Could not reach mempool API.";
+    }
+
+    $block_json = json_decode(wp_remote_retrieve_body($block_response), true);
+    $current_block = isset($block_json[0]['height']) ? $block_json[0]['height'] : 'Unknown';
+
+    return '<span class="mempool-block-height"><strong>Current Bitcoin block:</strong> ' . esc_html($current_block) . '</span>';
+});
+
+// Transaction fees shortcode
+add_shortcode('mempool_fees', function() {
+    $fees_url = mempool_api_url('/v1/fees/recommended');
+    $fees_response = wp_remote_get($fees_url);
+
+    if (is_wp_error($fees_response)) {
+        return "Could not reach mempool API.";
+    }
+
+    $fees_json = json_decode(wp_remote_retrieve_body($fees_response), true);
+
+    if (!isset($fees_json['fastestFee'])) {
+        return "Fee information not available.";
+    }
+
+    ob_start();
+    ?>
+    <span class="mempool-fees">
+        <strong>Transaction fees (sat/vB):</strong><br>
+        Fastest: <?php echo esc_html($fees_json['fastestFee']); ?><br>
+        Half hour: <?php echo esc_html($fees_json['halfHourFee']); ?><br>
+        Hour: <?php echo esc_html($fees_json['hourFee']); ?><br>
+    </span>
+    <?php
+    return ob_get_clean();
+});