server/search: add content-checksum

API.md

@@ -633,7 +633,7 @@ data.
     **Named tokens**
 
     | `<key>`            | Description                                                |
-    | ---------------- | ---------------------------------------------------------- |
+    | ------------------ | ---------------------------------------------------------- |
     | `id`               | having given post number                                   |
     | `tag`              | having given tag                                           |
     | `score`            | having given score                                         |
@@ -649,6 +649,7 @@ data.
     | `relation-count`   | having given number of relations                           |
     | `feature-count`    | having been featured given number of times                 |
     | `type`             | given type of posts. `<value>` can be either `image`, `animation` (or `animated` or `anim`), `flash` (or `swf`) or `video` (or `webm`). |
+    | `content-checksum` | having given SHA1 checksum                                 |
     | `file-size`        | having given file size (in bytes)                          |
     | `image-width`      | having given image width (where applicable)                |
     | `image-height`     | having given image height (where applicable)               |

client/html/help_search_posts.tpl

@@ -66,6 +66,10 @@
             <td><code>type</code></td>
             <td>given type of posts. <code>&lt;value&gt;</code> can be either <code>image</code>, <code>animation</code> (or <code>animated</code> or <code>anim</code>), <code>flash</code> (or <code>swf</code>) or <code>video</code> (or <code>webm</code>).</td>
         </tr>
+        <tr>
+            <td><code>content-checksum</code></td>
+            <td>having given SHA1 checksum</td>
+        </tr>
         <tr>
             <td><code>file-size</code></td>
             <td>having given file size (in bytes)</td>

server/szurubooru/search/configs/post_search_config.py

@@ -182,6 +182,8 @@ class PostSearchConfig(BaseSearchConfig):
             'type':
                 search_util.create_str_filter(
                     db.Post.type, _type_transformer),
+            'content-checksum': search_util.create_str_filter(
+                db.Post.checksum),
             'file-size': search_util.create_num_filter(db.Post.file_size),
             ('image-width', 'width'):
                 search_util.create_num_filter(db.Post.canvas_width),

server/szurubooru/tests/search/configs/test_post_search_config.py

@@ -365,6 +365,24 @@ def test_filter_by_invalid_type(executor):
         executor.execute('type:invalid', page=1, page_size=100)
 
 
+@pytest.mark.parametrize('input,expected_post_ids', [
+    ('content-checksum:checksum1', [1]),
+    ('content-checksum:checksum3', [3]),
+    ('content-checksum:checksum1,checksum3', [1, 3]),
+])
+def test_filter_by_content_checksum(
+        verify_unpaged, post_factory, input, expected_post_ids):
+    post1 = post_factory(id=1)
+    post2 = post_factory(id=2)
+    post3 = post_factory(id=3)
+    post1.checksum = 'checksum1'
+    post2.checksum = 'checksum2'
+    post3.checksum = 'checksum3'
+    db.session.add_all([post1, post2, post3])
+    db.session.flush()
+    verify_unpaged(input, expected_post_ids)
+
+
 @pytest.mark.parametrize('input,expected_post_ids', [
     ('file-size:100', [1]),
     ('file-size:102', [3]),