Impossible to create Dart client with Github spec

[chemaxa]

Description

Hi. I am tried to use OpenApitools and https://editor.swagger.io/ online generators for build dart github api client, but no one of them cant build working code.

openapi-generator version

5.0.0-beta2

OpenAPI declaration file content or url

https://github.com/github/rest-api-description/tree/main/descriptions/api.github.com

Command line used for generation

I tried using online generator on https://editor.swagger.io/,
just put URL on github json spec file and select DART in dropdown menu.

After that i also try to use openapi tools generator and download jar and used command from
https://github.com/OpenAPITools/openapi-generator/wiki/API-client-generator-HOWTO

java -jar .\openapi-generator-cli-5.0.0-beta2.jar generate -i .\openapi.json -g dart -o .\dart-client

Where openapi.json file i getting from https://github.com/github/rest-api-description/tree/main/descriptions/api.github.com

Steps to reproduce

Just try to build client from github swagger.json, and open code editor, after analyze is finished dart compiler will show all issues with generated code.

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[kuhnroyal]

Can you specify the problems that occur?

[kuhnroyal]

@chemaxa It would be great if you can run this again with 5.0.0 and describe the specific problems that you are having.

[chemaxa]

Unfortunately it doesnt work with github spec.

More than 7k errors in generated code.

[kuhnroyal]

They seem to use a lot of plain objects, that is an issue that is tracked here: #8179
For the other errors like Expected to find ';' and Expected an identifier we need more specifics.

[robrbecker]

@chemaxa I'm looking to convert https://github.com/SpinlockLabs/github.dart to be generated via the openapi spec if you'd like to help. discussion here SpinlockLabs/github.dart#245

[robrbecker]

The main problems I'm still getting are

• a lot of InlineObject### classes.
• Class OneOfintegerstring isn't found.
• Doesn't generate a dart 2.12 null-safe api

[xmo-odoo]

Figuring this is mostly an issue with Github's spec so posting it here: using 5.3.0, generating a Rust project from the github OpenAPI spec

• generates pages after pages of warnings including
  • Multiple schemas found in the OAS 'content' section, returning only the first one (application/json)
  • The following schema has undefined (null) baseType.
• once that finishes, the generated project has 282 compilation errors:
  • duplicated fields _1
  • numerous instances of UNKNOWN_BASE_TYPE not found
  • odd composite types not found (e.g. OneOfstringinteger, OneOfstringobject, AnyOfsimpleUserteam)
  • type mismatches (e.g. Box<Option<_>> being passed where Option<Box<_>> is expected)
  • Default declaration missing on various structures leading to their parent structures being unable to declare Default

Also probably more specific to the rust generator: every field is associated with rename_all even when that's not necessary (which is "generally").