refactor: replace bash hacks with custom templates (#34)

etc/generate-openapi.sh

@@ -13,54 +13,16 @@ docker run --rm -it -u "$(id -u):$(id -g)" \
   -g go \
   -i /influx/internal/api/api.yml \
   -o /influx/internal/api \
+  -t /influx/internal/api/templates \
   --additional-properties packageName=api,enumClassPrefix=true,generateInterfaces=true
 
-# Clean up files we don't care about.
-(
-  cd "${ROOT_DIR}/internal/api"
-  rm -rf go.mod go.sum git_push.sh api docs .openapi-generator .travis.yml .gitignore
-)
-
 # Edit the generated files.
 (
-  cd "${ROOT_DIR}"
+  # Clean up files we don't care about.
+  cd "${ROOT_DIR}/internal/api"
+  rm -rf go.mod go.sum git_push.sh api docs .openapi-generator .travis.yml .gitignore
 
-  # Inject linter directives into generated files to make staticcheck happy.
-  cat <<EOF > internal/api/client.go
-//lint:file-ignore ST1005 Ignore capitalized errors, they're generated
-//lint:file-ignore SA6005 Ignore old-fashioned way of comparing strings, it's generated
-
-$(cat internal/api/client.go)
-EOF
-  cat <<EOF > internal/api/configuration.go
-//lint:file-ignore ST1005 Ignore capitalized errors, they're generated
-
-$(cat internal/api/configuration.go)
-EOF
-
-  # Remove the OAuth code from the generated files.
-  # We don't use OAuth, and it pulls in a huge dependency on the Google Cloud libraries.
-  #
-  # See https://github.com/OpenAPITools/openapi-generator/issues/9281 for a feature request
-  # to add a toggle that would prevent OAuth code from even being generated.
-  sed -i.bak -e '/OAuth2 authentication/,+10d' -e 's#"golang.org/x/oauth2"##' internal/api/client.go
-  sed -i.bak -e '/OAuth2/,+2d' internal/api/configuration.go
-
-  # Replace all uses of int32 with int64 in our generated models.
-  #
-  # See https://github.com/OpenAPITools/openapi-generator/issues/9280 for a feature request
-  # to make the Go generator's number-handling compliant with the spec, so we can generate int64
-  # fields directly without making our public docs invalid.
-  for m in internal/api/model_*.go; do
-    sed -i.bak -e 's/int32/int64/g' ${m}
-  done
-
-  rm internal/api/*.bak
-)
-
-# Since we deleted the generated go.mod, run `go mod tidy` to update parent dependencies.
-(
+  # Clean up the generated code.
   cd "${ROOT_DIR}"
   make fmt
-  go mod tidy
 )