JetBrains HTTP Client - Adds support for query and header params and env file (OpenAPITools#18844)

* Adds basic support for query params.

* Need to parameterize them
* Need to add tests
* Need to add option to skip, maybe
* Need to add support for header params too

* Parameterizes query param values

* Need to add tests
* Need to add option to skip, maybe
* Need to add support for header params too

* Remove extra empty line

* Adds support for header params

* Also fixes extra end of line bug.

* Fixing failing test

* Adding tests for query params

* Adding tests for header params

* Adding basic support for env file

* Add support for env file for path variables and custom header variables

* TODO : Add tests

* Adding tests for env generation

* Adding generated test files

* Fix namefile

Author: jlengrand

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JetbrainsHttpClientClientCodegen.java

@@ -31,6 +31,8 @@
 import java.io.IOException;
 import java.io.Writer;
 import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
@@ -66,6 +68,9 @@ public class JetbrainsHttpClientClientCodegen extends DefaultCodegen implements
 
     public List<String> customHeaders = new ArrayList<>();
 
+    // A map is nice, because that way I easily override variables across APIs, for pagination for example. This should add nice defaults
+    private final Map<String, Object> customVariables = new HashMap<>();
+
 
     public CodegenType getTag() {
         return CodegenType.CLIENT;
@@ -96,6 +101,7 @@ public JetbrainsHttpClientClientCodegen() {
         embeddedTemplateDir = templateDir = "jetbrains-http-client";
         apiPackage = "Apis";
         supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
+        supportingFiles.add(new SupportingFile("http-client.template.env.mustache", "Apis", "http-client.template.env.json"));
 
 
         cliOptions.clear();
@@ -116,6 +122,14 @@ public void processOpts() {
         if (additionalProperties.containsKey(CUSTOM_HEADERS)) {
             customHeaders = Arrays.asList(additionalProperties.get(CUSTOM_HEADERS).toString().split("&"));
         }
+
+        bodyVariables.forEach(variable -> customVariables.put(variable, ""));
+        for(String header: customHeaders) {
+            List<String> variables = extractDoubleCurlyBraces(header);
+            if(!variables.isEmpty()) {
+                variables.forEach(v -> customVariables.put(v, ""));
+            }
+        }
     }
 
     @Override
@@ -152,9 +166,17 @@ public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<Mo
                 codegenOperation.vendorExtensions.put("customHeaders", customHeaders);
             }
         }
+
         return results;
     }
 
+    @Override
+    public Map<String, Object> postProcessSupportingFileData(Map<String, Object> objs) {
+        var variables = new ArrayList<>(customVariables.keySet());
+        objs.put("vendorExtensionsVariables", variables);
+        return objs;
+    }
+
     List<RequestItem> getRequests(CodegenOperation codegenOperation) {
         List<RequestItem> items = new ArrayList<>();
 
@@ -195,10 +217,42 @@ List<RequestItem> getRequests(CodegenOperation codegenOperation) {
             items.add(new RequestItem(codegenOperation.summary, null));
         }
 
+        codegenOperation.headerParams.forEach(param -> customVariables.put(param.baseName, ""));
+        codegenOperation.queryParams.forEach(param -> customVariables.put(param.paramName, ""));
+
+        // I also need to grab the parameters from the path
+        List<String> pathVariables = extractSingleCurlyBraces(codegenOperation.path);
+        pathVariables.forEach(pv -> customVariables.put(pv, ""));
+
         // Handling custom variables now
         return handleCustomVariablesInRequests(items);
     }
 
+    public static List<String> extractDoubleCurlyBraces(String input) {
+        List<String> result = new ArrayList<>();
+        Pattern pattern = Pattern.compile("\\{\\{([^}]+)\\}\\}");
+        Matcher matcher = pattern.matcher(input);
+
+        while (matcher.find()) {
+            result.add(matcher.group(1));
+        }
+
+        return result;
+    }
+
+    public static List<String> extractSingleCurlyBraces(String input) {
+        List<String> result = new ArrayList<>();
+        Pattern pattern = Pattern.compile("\\{([^}]+)\\}");
+        Matcher matcher = pattern.matcher(input);
+
+        while (matcher.find()) {
+            result.add(matcher.group(1));
+        }
+
+        return result;
+    }
+
+
     private List<RequestItem> handleCustomVariablesInRequests(List<RequestItem> items) {
         if (!bodyVariables.isEmpty()) {
             for (var item : items) {
@@ -220,7 +274,7 @@ private List<RequestItem> handleCustomVariablesInRequests(List<RequestItem> item
     public void postProcess() {
         System.out.println("##########################################################################################");
         System.out.println("# Thanks for using OpenAPI Generator.                                                    #");
-        System.out.println("# Please consider donation to help us maintain this project \uD83D\uDE4F                           #");
+        System.out.println("# Please consider donation to help us maintain this project \uD83D\uDE4F                 #");
         System.out.println("# https://opencollective.com/openapi_generator/donate                                    #");
         System.out.println("#                                                                                        #");
         System.out.println("# This generator was written by Julien Lengrand-Lambert (https://github.com/jlengrand)   #");

modules/openapi-generator/src/main/resources/jetbrains-http-client/api.mustache

@@ -5,13 +5,16 @@
 {{#vendorExtensions.requests}}
 ### {{#summary}}{{summary}}{{/summary}}
 ## {{name}}
-{{httpMethod}} {{basePath}}{{#lambda.doubleMustache}}{{path}}{{/lambda.doubleMustache}}{{#authMethods}}{{#isKeyInQuery}}?{{keyParamName}}={{#lambda.doubleMustache}}{queryKey}{{/lambda.doubleMustache}}{{/isKeyInQuery}}{{/authMethods}}
+{{httpMethod}} {{basePath}}{{#lambda.doubleMustache}}{{path}}{{/lambda.doubleMustache}}{{>queryParams}}
 {{#consumes}}
 Content-Type: {{{mediaType}}}
 {{/consumes}}
 {{#produces}}
 Accept: {{{mediaType}}}
 {{/produces}}
+{{#headerParams}}
+{{baseName}}: {{=<% %>=}}{{<%paramName%>}}<%={{ }}=%>
+{{/headerParams}}
 {{#vendorExtensions.customHeaders}}
 {{{.}}}
 {{/vendorExtensions.customHeaders}}

modules/openapi-generator/src/main/resources/jetbrains-http-client/http-client.template.env.mustache

@@ -0,0 +1,7 @@
+{
+    "dev": {
+{{#vendorExtensionsVariables}}
+        "{{.}}" : ""{{^-last}},{{/-last}}
+{{/vendorExtensionsVariables}}
+    }
+}

modules/openapi-generator/src/main/resources/jetbrains-http-client/queryParams.mustache

@@ -0,0 +1 @@
+{{! Case where there is no query params, auth does everything}}{{^queryParams}}{{#authMethods}}{{#isKeyInQuery}}?{{keyParamName}}={{#lambda.doubleMustache}}{queryKey}{{/lambda.doubleMustache}}{{/isKeyInQuery}}{{/authMethods}}{{/queryParams}}{{#queryParams}}{{! If there are query params, auth has no logic}}{{#-first}}?{{/-first}}{{paramName}}={{=<% %>=}}{{<%paramName%>}}<%={{ }}=%>{{^-last}}&{{/-last}}{{#-last}}{{#authMethods}}{{#isKeyInQuery}}&{{keyParamName}}={{#lambda.doubleMustache}}{queryKey}{{/lambda.doubleMustache}}{{/isKeyInQuery}}{{/authMethods}}{{/-last}}{{/queryParams}}