v0.2.1: Change SHA256 input to file upload field

- Replace SHA256 text input with file upload field for checksum files
- Add readChecksumFile() JavaScript function using FileReader API
- Support .sha256 and .txt checksum file formats
- Add Promise-based async handling for file reading
- Add localized error messages for checksum file validation
- Update translations (de_CH) with new strings

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.2.1] - 2026-01-22
+
+### Changed
+
+- SHA256 hash input changed from text field to file upload field
+- Checksum files (.sha256 or .txt) can now be uploaded directly
+- Improved user experience for version integrity verification
+
+### Technical Details
+
+- Added `readChecksumFile()` JavaScript function using FileReader API with Promise support
+- Checksum file format supports both "hash  filename" and plain "hash" formats
+- Added localized error messages for checksum file validation
+
 ## [0.2.0] - 2026-01-22
 
 ### Added

assets/js/versions.js

@@ -101,9 +101,38 @@
             $('#selected_file_name').text('');
             $('#remove-version-file-btn').hide();
 
-            // Hide and clear SHA256 hash field
+            // Hide and clear checksum file field
             $('#sha256-hash-row').hide();
-            $('#new_file_hash').val('');
+            $('#new_checksum_file').val('');
+        },
+
+        /**
+         * Read checksum from uploaded file
+         * Supports formats: "hash  filename" or just "hash"
+         */
+        readChecksumFile: function(file) {
+            return new Promise(function(resolve, reject) {
+                if (!file) {
+                    resolve('');
+                    return;
+                }
+
+                var reader = new FileReader();
+                reader.onload = function(e) {
+                    var content = e.target.result.trim();
+                    // Extract hash from content (format: "hash  filename" or just "hash")
+                    var match = content.match(/^([a-fA-F0-9]{64})/);
+                    if (match) {
+                        resolve(match[1].toLowerCase());
+                    } else {
+                        reject(new Error(wcLicensedProductVersions.strings.invalidChecksumFile || 'Invalid checksum file format'));
+                    }
+                };
+                reader.onerror = function() {
+                    reject(new Error(wcLicensedProductVersions.strings.checksumReadError || 'Failed to read checksum file'));
+                };
+                reader.readAsText(file);
+            });
         },
 
         /**
@@ -134,13 +163,14 @@
         addVersion: function(e) {
             e.preventDefault();
 
+            var self = WCLicensedProductVersions;
             var $btn = $(this);
             var $spinner = $btn.siblings('.spinner');
             var productId = $btn.data('product-id');
             var version = $('#new_version').val().trim();
             var releaseNotes = $('#new_release_notes').val().trim();
             var attachmentId = $('#new_attachment_id').val();
-            var fileHash = $('#new_file_hash').val().trim();
+            var checksumFile = $('#new_checksum_file')[0].files[0];
 
             // Validate version
             if (!version) {
@@ -156,6 +186,8 @@
             $btn.prop('disabled', true);
             $spinner.addClass('is-active');
 
+            // Read checksum file if provided, then submit
+            self.readChecksumFile(checksumFile).then(function(fileHash) {
                 $.ajax({
                     url: wcLicensedProductVersions.ajaxUrl,
                     type: 'POST',
@@ -183,7 +215,7 @@
                             $('#selected_file_name').text('');
                             $('#remove-version-file-btn').hide();
                             $('#sha256-hash-row').hide();
-                        $('#new_file_hash').val('');
+                            $('#new_checksum_file').val('');
                         } else {
                             alert(response.data.message || wcLicensedProductVersions.strings.error);
                         }
@@ -196,6 +228,11 @@
                         $spinner.removeClass('is-active');
                     }
                 });
+            }).catch(function(error) {
+                alert(error.message);
+                $btn.prop('disabled', false);
+                $spinner.removeClass('is-active');
+            });
         },
 
         deleteVersion: function(e) {

src/Admin/VersionAdminController.php

@@ -99,10 +99,10 @@ final class VersionAdminController
                         </td>
                     </tr>
                     <tr id="sha256-hash-row" style="display: none;">
-                        <th><label for="new_file_hash"><?php esc_html_e('SHA256 Hash', 'wc-licensed-product'); ?></label></th>
+                        <th><label for="new_checksum_file"><?php esc_html_e('Checksum File', 'wc-licensed-product'); ?></label></th>
                         <td>
-                            <input type="text" id="new_file_hash" name="new_file_hash" class="large-text" placeholder="<?php esc_attr_e('Enter SHA256 checksum...', 'wc-licensed-product'); ?>" pattern="[a-fA-F0-9]{64}" />
-                            <p class="description"><?php esc_html_e('SHA256 checksum of the uploaded file (optional but recommended for integrity verification).', 'wc-licensed-product'); ?></p>
+                            <input type="file" id="new_checksum_file" name="new_checksum_file" accept=".sha256,.txt" />
+                            <p class="description"><?php esc_html_e('Upload a SHA256 checksum file (.sha256 or .txt) to verify file integrity.', 'wc-licensed-product'); ?></p>
                         </td>
                     </tr>
                     <tr>
@@ -218,6 +218,8 @@ final class VersionAdminController
                 'error' => __('An error occurred. Please try again.', 'wc-licensed-product'),
                 'selectFile' => __('Select Download File', 'wc-licensed-product'),
                 'useThisFile' => __('Use this file', 'wc-licensed-product'),
+                'invalidChecksumFile' => __('Invalid checksum file format. File must contain a 64-character SHA256 hash.', 'wc-licensed-product'),
+                'checksumReadError' => __('Failed to read checksum file.', 'wc-licensed-product'),
             ],
         ]);
 

wc-licensed-product.php

@@ -3,7 +3,7 @@
  * Plugin Name: WooCommerce Licensed Product
  * Plugin URI: https://src.bundespruefstelle.ch/magdev/wc-licensed-product
  * Description: WooCommerce plugin to sell software products using license keys with domain-based validation.
- * Version: 0.2.0
+ * Version: 0.2.1
  * Author: Marco Graetsch
  * Author URI: https://src.bundespruefstelle.ch/magdev
  * License: GPL-2.0-or-later
@@ -28,7 +28,7 @@ if (!defined('ABSPATH')) {
 }
 
 // Plugin constants
-define('WC_LICENSED_PRODUCT_VERSION', '0.2.0');
+define('WC_LICENSED_PRODUCT_VERSION', '0.2.1');
 define('WC_LICENSED_PRODUCT_PLUGIN_FILE', __FILE__);
 define('WC_LICENSED_PRODUCT_PLUGIN_DIR', plugin_dir_path(__FILE__));
 define('WC_LICENSED_PRODUCT_PLUGIN_URL', plugin_dir_url(__FILE__));