chore(rest): explain more clearly how to use /rest/db/file (#817)

This adds an example curl call and explains the parameters more clearly.

Co-authored-by: tomasz1986 <[email protected]>
Co-authored-by: André Colomb <[email protected]>

Author: 3 people

rest/db-file-get.rst

@@ -1,12 +1,31 @@
 GET /rest/db/file
 =================
 
-Returns most data available about a given file, including version and
-availability. Takes ``folder`` and ``file`` parameters. ``local`` and
-``global`` refer to the current file on disk and the globally newest file,
-respectively.
+Returns most data about a given file, including version and availability.
 
-.. code-block::
+Request
+-------
+
+The call requires parameters for ``folder`` and ``file`` in the query string:
+
+- ``folder`` is the folder ID which you can find in the Syncthing Web GUI,
+  e.g. ``5camp-slpa8``.
+
+- ``file`` is the relative path of the file starting from the folder root to the
+  file you are interested in.  The path and filename must be correctly
+  URL-encoded.
+
+Example Request
+^^^^^^^^^^^^^^^
+
+.. code-block:: bash
+
+    $ curl -s -H X-API-KEY:... "http://localhost:8384/rest/db/file?folder=YOUR_FOLDER_ID" --url-query "file=path/to/file.pdf"
+
+Response
+--------
+
+.. code-block:: json
 
     {
       "availability": [
@@ -16,46 +35,48 @@ respectively.
         }
       ],
       "global": { /* a file entry */ },
-      "local": { /* a file entry */ }
-    }
-
-A file entry looks like this::
-
-    {
-      {
-        "deleted": false,
-        "ignored": false,
-        "inodeChange": "1970-01-01T01:00:00+01:00",
-        "invalid": false,
-        "localFlags": 0,
-        "modified": "2022-09-28T08:07:19.979723+02:00",
-        "modifiedBy": "523ITIE",
-        "mustRescan": false,
-        "name": "img",
-        "noPermissions": false,
-        "numBlocks": 0,
-        "permissions": "0755",
-        "platform": { /* platform specific data */ },
-        "sequence": 914,
-        "size": 128,
-        "type": "FILE_INFO_TYPE_DIRECTORY",
-        "version": [
-          "523ITIE:1664345275"
-        ]
-      },
+      "local": { /* a file entry */ },
       "mtime": {
         "err": null,
         "value": {
           "real": "0001-01-01T00:00:00Z",
           "virtual": "0001-01-01T00:00:00Z"
-        }
       }
     }
 
+``local`` and ``global`` refer to the current file on the local device and the
+globally newest file, respectively.  A file entry looks like this:
+
+.. code-block:: json
+
+    {
+      "deleted": false,
+      "ignored": false,
+      "inodeChange": "1970-01-01T01:00:00+01:00",
+      "invalid": false,
+      "localFlags": 0,
+      "modified": "2022-09-28T08:07:19.979723+02:00",
+      "modifiedBy": "523ITIE",
+      "mustRescan": false,
+      "name": "img",
+      "noPermissions": false,
+      "numBlocks": 0,
+      "permissions": "0755",
+      "platform": { /* platform specific data */ },
+      "sequence": 914,
+      "size": 128,
+      "type": "FILE_INFO_TYPE_DIRECTORY",
+      "version": [
+	"523ITIE:1664345275"
+      ]
+    }
+
 Platform specific data may be ownership, extended attributes, etc. and is
-divided into entries per operating system / platform. An example platform
-entry containing ownership information for Unix systems and an extended
-attribute for macOS ("darwin") looks as follows::
+divided into entries per operating system / platform.  An example platform entry
+containing ownership information for Unix systems and an extended attribute for
+macOS ("darwin") looks as follows:
+
+.. code-block:: json
 
     {
       "darwin": {