Support multiple tags in each endpoint (#687)

Currently when an endpoint has multiple tags, the first tag is used and
everything else is ignored.

This PR modifies it so endpoints with multiple tags are added to each of
the tags.

Yes, this results in repeated code 😅, but works beautifully
and functions can now be found anywhere we expect them to be.

---------

Co-authored-by: Dylan Anthony <dbanty@users.noreply.github.com>
Co-authored-by: Dylan Anthony <43723790+dbanty@users.noreply.github.com>

Author: paulo-raca

.changeset/add_generate_all_tags_config_option.md

@@ -0,0 +1,8 @@
+---
+default: minor
+---
+
+# Add `generate_all_tags` config option
+
+You can now, optionally, generate **duplicate** endpoint functions/modules using _every_ tag for an endpoint,
+not just the first one, by setting `generate_all_tags: true` in your configuration file.

README.md

@@ -108,6 +108,16 @@ literal_enums: true
 
 This is especially useful if enum values, when transformed to their Python names, end up conflicting due to case sensitivity or special symbols.
 
+### generate_all_tags
+
+`openapi-python-client` generates module names within the `api` module based on the OpenAPI `tags` of each endpoint. 
+By default, only the _first_ tag is generated. If you want to generate **duplicate** endpoint functions using _every_ tag 
+listed, you can enable this option:
+
+```yaml
+generate_all_tags: true
+```
+
 ### project_name_override and package_name_override
 
 Used to change the name of generated client library project/package. If the project name is changed but an override for the package name

end_to_end_tests/__snapshots__/test_end_to_end.ambr

@@ -1,4 +1,18 @@
 # serializer version: 1
+# name: test_documents_with_errors[bad-status-code]
+  '''
+  Generating /test-documents-with-errors
+  Warning(s) encountered while generating. Client was generated, but some pieces may be missing
+  
+  WARNING parsing GET / within default.
+  
+  Invalid response status code abcdef (not a valid HTTP status code), response will be omitted from generated client
+  
+  
+  If you believe this was a mistake or this tool is missing a feature you need, please open an issue at https://github.com/openapi-generators/openapi-python-client/issues/new/choose
+  
+  '''
+# ---
 # name: test_documents_with_errors[circular-body-ref]
   '''
   Generating /test-documents-with-errors

end_to_end_tests/baseline_openapi_3.0.json

@@ -1149,9 +1149,7 @@
     },
     "/tag_with_number": {
       "get": {
-        "tags": [
-          "1"
-        ],
+        "tags": ["1", "2"],
         "responses": {
           "200": {
             "description": "Success"

end_to_end_tests/baseline_openapi_3.1.yaml

@@ -1141,9 +1141,7 @@ info:
   },
   "/tag_with_number": {
     "get": {
-      "tags": [
-        "1"
-      ],
+      "tags": ["1", "2"],
       "responses": {
         "200": {
           "description": "Success"

end_to_end_tests/config.yml

@@ -11,3 +11,4 @@ class_overrides:
 field_prefix: attr_
 content_type_overrides:
    openapi/python/client: application/json
+generate_all_tags: true

end_to_end_tests/custom-templates-golden-record/my_test_api_client/api/__init__.py

@@ -11,6 +11,7 @@
 from .parameters import ParametersEndpoints
 from .responses import ResponsesEndpoints
 from .tag1 import Tag1Endpoints
+from .tag2 import Tag2Endpoints
 from .tests import TestsEndpoints
 from .true_ import True_Endpoints
 
@@ -48,6 +49,10 @@ def parameters(cls) -> type[ParametersEndpoints]:
     def tag1(cls) -> type[Tag1Endpoints]:
         return Tag1Endpoints
 
+    @classmethod
+    def tag2(cls) -> type[Tag2Endpoints]:
+        return Tag2Endpoints
+
     @classmethod
     def location(cls) -> type[LocationEndpoints]:
         return LocationEndpoints

end_to_end_tests/custom-templates-golden-record/my_test_api_client/api/tag2/__init__.py

@@ -0,0 +1,11 @@
+"""Contains methods for accessing the API Endpoints"""
+
+import types
+
+from . import get_tag_with_number
+
+
+class Tag2Endpoints:
+    @classmethod
+    def get_tag_with_number(cls) -> types.ModuleType:
+        return get_tag_with_number

end_to_end_tests/documents_with_errors/bad-status-code.yaml

@@ -0,0 +1,14 @@
+openapi: "3.1.0"
+info:
+  title: "There's something wrong with me"
+  version: "0.1.0"
+paths:
+  "/":
+    get:
+      responses:
+        "abcdef":
+          description: "Successful Response"
+          content:
+            "application/json":
+              schema:
+                const: "Why have a fixed response? I dunno"