Custom templates don´t work properly with Gradle Plugin

[esfomeado]

Issue Description

The custom template don't work properly with the Gradle Plugin since the daemon folder is used as root instead of the project folder.

Steps to Reproduce

Try to configure a custom template using the gradle plugin.
The root folder is going to be the gradle daemon root.

Expected Result

It should use the project folder as the root.

Actual Result

It uses the daemon root.

Your Environment and Setup

• graphql-java-codegen version: 5.7.1
• Build tool: Gradle

[isaac-mercieca]

@esfomeado

I was investigating this problem which was encountered by setting the plugin on a Gradle project. I noticed that the problem occurs as FileTemplateLoader in FreeMarkerTemplatesRegistry is being initialised to the current working directory which in the case of Gradle will be the daemon folder.

FileTemplateLoader fileTemplateLoader = new FileTemplateLoader(new File("."));

The solution I was considering to address this problem was to include support for a new configuration customTemplatesDirectory or customTemplatesRoot. This will provide the developer with the ability to configure the template directory for a project. Since the configuration will be available from each of the build plugins the default value for the template's root will be defined by each plugin whereas for Gradle this can be the project's root directory. Such a configuration would then need to be provided to the FileTemplateLoader.

[esfomeado]

@isaac-mercieca I think that is the best solution.