Checking templates for go SDK

templates/openapi-generator/go/README.mustache

@@ -1,6 +1,4 @@
-# FattureInCloud Go SDK
-
-![Release](https://img.shields.io/github/v/release/fattureincloud/fattureincloud-go-sdk) ![unit tests](https://github.com/fattureincloud/fattureincloud-go-sdk/actions/workflows/validate.yaml/badge.svg)
+# Go API client for {{packageName}}
 
 {{#appDescriptionWithNewLines}}
 {{{.}}}
@@ -14,17 +12,65 @@ This API client was generated by the [OpenAPI Generator](https://openapi-generat
 {{^hideGenerationTimestamp}}
 - Build date: {{generatedDate}}
 {{/hideGenerationTimestamp}}
+- Generator version: {{generatorVersion}}
 - Build package: {{generatorClass}}
 {{#infoUrl}}
 For more information, please visit [{{{infoUrl}}}]({{{infoUrl}}})
 {{/infoUrl}}
 
 ## Installation
 
-Install the following dependencies:
+Import the package in a go file in your project and run `go mod tidy`:
 
-```shell
-go get github.com/fattureincloud/fattureincloud-go-sdk/v2
+```go
+import {{packageName}} "{{gitHost}}/{{gitUserId}}/{{gitRepoId}}{{#isGoSubmodule}}/{{packageName}}{{/isGoSubmodule}}"
+```
+
+To use a proxy, set the environment variable `HTTP_PROXY`:
+
+```go
+os.Setenv("HTTP_PROXY", "http://proxy_name:proxy_port")
+```
+
+## Configuration of Server URL
+
+Default configuration comes with `Servers` field that contains server objects as defined in the OpenAPI specification.
+
+### Select Server Configuration
+
+For using other server than the one defined on index 0 set context value `{{packageName}}.ContextServerIndex` of type `int`.
+
+```go
+ctx := context.WithValue(context.Background(), {{packageName}}.ContextServerIndex, 1)
+```
+
+### Templated Server URL
+
+Templated server URL is formatted using default variables from configuration or from context value `{{packageName}}.ContextServerVariables` of type `map[string]string`.
+
+```go
+ctx := context.WithValue(context.Background(), {{packageName}}.ContextServerVariables, map[string]string{
+	"basePath": "v2",
+})
+```
+
+Note, enum values are always validated and all unused variables are silently ignored.
+
+### URLs Configuration per Operation
+
+Each operation can use different server URL defined using `OperationServers` map in the `Configuration`.
+An operation is uniquely identified by `"{classname}Service.{nickname}"` string.
+Similar rules for overriding default operation server index and variables applies by using `{{packageName}}.ContextOperationServerIndices` and `{{packageName}}.ContextOperationServerVariables` context maps.
+
+```go
+ctx := context.WithValue(context.Background(), {{packageName}}.ContextOperationServerIndices, map[string]int{
+	"{classname}Service.{nickname}": 2,
+})
+ctx = context.WithValue(context.Background(), {{packageName}}.ContextOperationServerVariables, map[string]map[string]string{
+	"{classname}Service.{nickname}": {
+		"port": "8443",
+	},
+})
 ```
 
 ## Documentation for API Endpoints
@@ -53,8 +99,20 @@ Class | Method | HTTP request | Description
 - **API key parameter name**: {{{keyParamName}}}
 - **Location**: {{#isKeyInQuery}}URL query string{{/isKeyInQuery}}{{#isKeyInHeader}}HTTP header{{/isKeyInHeader}}
 
+Note, each API key must be added to a map of `map[string]APIKey` where the key is: {{name}} and passed in as the auth context for each request.
+
+Example
 
-Note, each API key must be added to a map of `map[string]APIKey` where the key is: {{keyParamName}} and passed in as the auth context for each request.
+```go
+auth := context.WithValue(
+		context.Background(),
+		{{packageName}}.ContextAPIKeys,
+		map[string]{{packageName}}.APIKey{
+			"{{name}}": {Key: "API_KEY_STRING"},
+		},
+	)
+r, err := client.Service.Operation(auth, args)
+```
 
 {{/isApiKey}}
 {{#isBasic}}

templates/openapi-generator/go/api.mustache

@@ -10,7 +10,6 @@ import (
 	"net/url"
 {{#imports}}	"{{import}}"
 {{/imports}}
-	. "github.com/fattureincloud/fattureincloud-go-sdk/v2/model"
 )
 
 {{#generateInterfaces}}
@@ -218,8 +217,16 @@ func (a *{{{classname}}}Service) {{nickname}}Execute(r {{#structPrefix}}{{&class
 		parameterAddToHeaderOrQuery(localVarQueryParams, "{{{baseName}}}", r.{{paramName}}, "{{style}}", "{{collectionFormat}}")
 	{{/isCollectionFormatMulti}}
 	{{#defaultValue}}} else {
+	{{#isArray}}
+		var defaultValue {{{dataType}}} = {{{dataType}}}{{{.}}}
+		parameterAddToHeaderOrQuery(localVarQueryParams, "{{{baseName}}}", defaultValue, "{{style}}", "{{collectionFormat}}")
+		r.{{paramName}} = &defaultValue
+	{{/isArray}}
+	{{^isArray}}
 		var defaultValue {{{dataType}}} = {{{.}}}
+		parameterAddToHeaderOrQuery(localVarQueryParams, "{{{baseName}}}", defaultValue, "{{style}}", "{{collectionFormat}}")
 		r.{{paramName}} = &defaultValue
+	{{/isArray}}
 	{{/defaultValue}}}
 	{{/required}}
 	{{/queryParams}}

templates/openapi-generator/go/api_doc.mustache

@@ -27,32 +27,29 @@ package main
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"os"
 {{#vendorExtensions.x-go-import}}
 {{{vendorExtensions.x-go-import}}}
 {{/vendorExtensions.x-go-import}}
-	{{goImportAlias}}api "{{gitHost}}/{{gitUserId}}/{{gitRepoId}}{{#isGoSubmodule}}/{{packageName}}{{/isGoSubmodule}}/v2/api"
-	{{goImportAlias}} "{{gitHost}}/{{gitUserId}}/{{gitRepoId}}{{#isGoSubmodule}}/{{packageName}}{{/isGoSubmodule}}/v2/model"
+	{{goImportAlias}} "{{gitHost}}/{{gitUserId}}/{{gitRepoId}}{{#isGoSubmodule}}/{{packageName}}{{/isGoSubmodule}}"
 )
 
 func main() {
 	{{#allParams}}
 	{{paramName}} := {{{vendorExtensions.x-go-example}}} // {{{dataType}}} | {{{description}}}{{^required}} (optional){{/required}}{{#defaultValue}} (default to {{{.}}}){{/defaultValue}}
 	{{/allParams}}
 
-	auth := context.WithValue(context.Background(), {{goImportAlias}}api.ContextAccessToken, "ACCESS_TOKEN")
-	configuration := {{goImportAlias}}api.NewConfiguration()
-	apiClient := {{goImportAlias}}api.NewAPIClient(configuration)
-	resp, r, err := apiClient.{{classname}}.{{operationId}}(auth{{#pathParams}}, {{paramName}}{{/pathParams}}){{#allParams}}{{^isPathParam}}.{{vendorExtensions.x-export-param-name}}({{paramName}}){{/isPathParam}}{{/allParams}}.Execute()
+	configuration := {{goImportAlias}}.NewConfiguration()
+	apiClient := {{goImportAlias}}.NewAPIClient(configuration)
+	{{#returnType}}resp, {{/returnType}}r, err := apiClient.{{classname}}.{{operationId}}(context.Background(){{#pathParams}}, {{paramName}}{{/pathParams}}){{#allParams}}{{^isPathParam}}.{{vendorExtensions.x-export-param-name}}({{paramName}}){{/isPathParam}}{{/allParams}}.Execute()
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Error when calling `{{classname}}.{{operationId}}``: %v\n", err)
 		fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
 	}
 	{{#returnType}}
 	// response from `{{operationId}}`: {{{.}}}
-	json.NewEncoder(os.Stdout).Encode(resp)
+	fmt.Fprintf(os.Stdout, "Response from `{{classname}}.{{operationId}}`: %v\n", resp)
 	{{/returnType}}
 }
 ```

templates/openapi-generator/go/client.mustache

@@ -22,14 +22,15 @@ import (
 	"strings"
 	"time"
 	"unicode/utf8"
-    . "github.com/fattureincloud/fattureincloud-go-sdk/v2/model"
 
 	{{#hasOAuthMethods}}
 	"golang.org/x/oauth2"
 	{{/hasOAuthMethods}}
 	{{#withAWSV4Signature}}
-	awsv4 "github.com/aws/aws-sdk-go/aws/signer/v4"
-	awscredentials "github.com/aws/aws-sdk-go/aws/credentials"
+	awsv4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
+	awscredentials "github.com/aws/aws-sdk-go-v2/credentials"
+	"crypto/sha256"
+	"encoding/hex"
 	{{/withAWSV4Signature}}
 )
 
@@ -459,13 +460,10 @@ func (c *APIClient) prepareRequest(
 		{{#withAWSV4Signature}}
 		// AWS Signature v4 Authentication
 		if auth, ok := ctx.Value(ContextAWSv4).(AWSv4); ok {
-			creds := awscredentials.NewStaticCredentials(auth.AccessKey, auth.SecretKey, auth.SessionToken)
-			signer := awsv4.NewSigner(creds)
-			var reader *strings.Reader
-			if body == nil {
-				reader = strings.NewReader("")
-			} else {
-				reader = strings.NewReader(body.String())
+			credsProvider := awscredentials.NewStaticCredentialsProvider(auth.AccessKey, auth.SecretKey, auth.SessionToken)
+			creds, err := credsProvider.Retrieve(ctx)
+			if err != nil {
+				return nil, err
 			}
 
 			// Define default values for region and service to maintain backward compatibility
@@ -478,8 +476,22 @@ func (c *APIClient) prepareRequest(
 				service = "oapi"
 			}
 
-			timestamp := time.Now()
-			_, err := signer.Sign(localVarRequest, reader, service, region, timestamp)
+			// Compute payload hash from the request body
+			var payloadHash string
+			if body == nil {
+				// Empty body
+				hash := sha256.Sum256([]byte(""))
+				payloadHash = hex.EncodeToString(hash[:])
+			} else {
+				// Hash the actual body content
+				bodyBytes := []byte(body.String())
+				hash := sha256.Sum256(bodyBytes)
+				payloadHash = hex.EncodeToString(hash[:])
+			}
+
+			// Sign the request with the computed payload hash
+			signer := awsv4.NewSigner()
+			err = signer.SignHTTP(ctx, creds, localVarRequest, payloadHash, service, region, time.Now())
 			if err != nil {
 				return nil, err
 			}
@@ -580,10 +592,7 @@ func addFile(w *multipart.Writer, fieldName, path string) error {
 	if err != nil {
 		return err
 	}
-	err = file.Close()
-	if err != nil {
-		return err
-	}
+	defer file.Close()
 
 	part, err := w.CreateFormFile(fieldName, filepath.Base(path))
 	if err != nil {

templates/openapi-generator/go/go.mod.mustache

@@ -1,11 +1,16 @@
-module {{gitHost}}/{{gitUserId}}/{{gitRepoId}}{{#isGoSubmodule}}/{{packageName}}{{/isGoSubmodule}}/v2
+module {{gitHost}}/{{gitUserId}}/{{gitRepoId}}{{#isGoSubmodule}}/{{packageName}}{{/isGoSubmodule}}
 
-go 1.18
+go 1.23
 
 require (
-	github.com/stretchr/testify v1.8.0
-	golang.org/x/oauth2 v0.5.0
+	{{#hasOAuthMethods}}
+	github.com/stretchr/testify v1.10.0
+	golang.org/x/oauth2 v0.27.0
+	{{/hasOAuthMethods}}
 	{{#withAWSV4Signature}}
-	github.com/aws/aws-sdk-go v1.34.14
+	github.com/aws/aws-sdk-go-v2 v1.37.0
 	{{/withAWSV4Signature}}
+	{{#importValidator}}
+	gopkg.in/validator.v2 v2.0.1
+	{{/importValidator}}
 )

templates/openapi-generator/go/go.sum.mustache

@@ -1,62 +1,19 @@
-cloud.google.com/go/compute/metadata v0.2.0/go.mod h1:zFmK7XCadkQkj6TtorcaGlCW1hT1fIilQDwofLpJ20k=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
-github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
-github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
-github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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+github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
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+{{#hasOAuthMethods}}
+golang.org/x/oauth2 v0.27.0 h1:da9Vo7/tDv5RH/7nZDz1eMGS/q1Vv1N/7FCrBhI9I3M=
+golang.org/x/oauth2 v0.27.0/go.mod h1:onh5ek6nERTohokkhCD/y2cV4Do3fxFHFuAejCkRWT8=
+{{/hasOAuthMethods}}
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-google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
-google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
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-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
-gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+{{#importValidator}}
+gopkg.in/validator.v2 v2.0.1 h1:xF0KWyGWXm/LM2G1TrEjqOu4pa6coO9AlWSf3msVfDY=
+gopkg.in/validator.v2 v2.0.1/go.mod h1:lIUZBlB3Im4s/eYp39Ry/wkR02yOPhZ9IwIRBjuPuG8=
+{{/importValidator}}

templates/openapi-generator/go/model_enum.mustache

@@ -2,23 +2,15 @@
 type {{{classname}}} {{{format}}}{{^format}}{{dataType}}{{/format}}
 
 // List of {{{name}}}
-var {{{classname}}}s = struct {
+const (
 	{{#allowableValues}}
 	{{#enumVars}}
 	{{^-first}}
 	{{/-first}}
-	{{name}} {{{classname}}}
+	{{#enumClassPrefix}}{{{classname.toUpperCase}}}_{{/enumClassPrefix}}{{name}} {{{classname}}} = {{{value}}}
 	{{/enumVars}}
 	{{/allowableValues}}
-} {
-	{{#allowableValues}}
-	{{#enumVars}}
-	{{^-first}}
-	{{/-first}}
-	{{name}}: {{{value}}},
-	{{/enumVars}}
-	{{/allowableValues}}
-}
+)
 
 // All allowed values of {{{classname}}} enum
 var Allowed{{{classname}}}EnumValues = []{{{classname}}}{