enable fetching of all mapping/resource versions

1 files changed, 41 insertions, 16 deletions

diff --git a/src/pydrilla/pydrilla.py b/src/pydrilla/pydrilla.py
index 2c4ad0d..2e91b89 100644
--- a/src/pydrilla/pydrilla.py
+++ b/src/pydrilla/pydrilla.py
@@ -494,6 +494,10 @@ class Content:
                         ver=version_string(mapping['version'])
                     )
 
+    def item_dict(self, type):
+        '''Obtain self.resources or self.mappings, depending on type.'''
+        return self.resources if type == 'resource' else self.mappings
+
     def find_item(self, type, identifier, ver=None):
         '''
         Find and return definition of the newest version of resource/mapping
@@ -502,8 +506,7 @@ class Content:
         If ver is specified, instead find and return definition of that version
         of the item (or None is absent).
         '''
-        dict = self.resources if type == 'resource' else self.mappings
-        versioned_item = dict.get(identifier)
+        versioned_item = self.item_dict(type).get(identifier)
         if not versioned_item:
             return None
 
@@ -511,6 +514,20 @@ class Content:
 
         return versioned_item.by_version.get(ver)
 
+    def get_item_all_versions(self, type, identifier):
+        '''
+        Return a list of all definitions of given resource or mapping, ordered
+        by version.
+
+        If no item of given type with such identifier exists, return [].
+        '''
+        versioned_item = self.item_dict(type).get(identifier)
+        if not versioned_item:
+            return []
+
+        return [versioned_item.by_version[version_string(ver)]
+                for ver in versioned_item.known_versions]
+
     def query(self, url, max=0):
         '''
         Return return registered patterns and mappings (available as
@@ -604,6 +621,9 @@ def escaping_gettext(text_key):
 
     return str(escape(_(text_key)))
 
+def content():
+    return current_app._pydrilla_content
+
 class MyEnvironment(Environment):
     '''
     A wrapper class around jinja2.Environment that causes GNU gettext function
@@ -639,20 +659,25 @@ indexpage = j2env.get_template('index.html')
 def index():
     return indexpage.render()
 
-for item_type in ['mapping', 'resource']:
-    def item(identifier, item_type=item_type):
-        ver = request.args.get('ver')
-        if ver is not None:
-            try:
-                ver = normalize_version(parse_version(ver))
-            except:
-                abort(400)
+def get_item(identifier, item_type):
+    ver = request.args.get('ver')
+    if ver == 'all':
+        definitions = content().get_item_all_versions(item_type, identifier)
+        return json.dumps(definitions)
+    if ver is not None:
+        try:
+            ver = normalize_version(parse_version(ver))
+        except:
+            abort(400)
+
+    definition = content().find_item(item_type, identifier, ver)
+    if definition is None:
+        abort(404)
 
-        definition = current_app._pydrilla_content\
-                                .find_item(item_type, identifier, ver)
-        if definition is None:
-            abort(404)
+    return json.dumps(definition)
 
-        return json.dumps(definition)
+for item_type in ['mapping', 'resource']:
+    def _get_item(identifier, item_type=item_type):
+        return get_item(identifier, item_type)
 
-    bp.add_url_rule(f'/{item_type}s/<string:identifier>', item_type, item)
+    bp.add_url_rule(f'/{item_type}s/<string:identifier>', item_type, _get_item)