Add GitHub issue template

repoman/src/main/kotlin/org/metaborg/repoman/GenerateCommand.kt

@@ -67,6 +67,7 @@ object GenerateCommand: CliktCommand(
         generator.generateGradleWrapper()
         generator.generateGradleRootProject()
         generator.generateGithubWorkflows()
+        generator.generateGithubIssueTemplates()
         println("Done!")
     }
 
@@ -142,6 +143,13 @@ object GenerateCommand: CliktCommand(
             }
         }
 
+        fun generateGithubIssueTemplates() {
+            val generate = metadata.files.githubIssueTemplates.generate
+            val update = metadata.files.githubIssueTemplates.update || forceUpdate
+            generate("github/ISSUE_TEMPLATE/config.yml", generate, update, path = ".github/ISSUE_TEMPLATE/config.yml")
+            generate("github/ISSUE_TEMPLATE/20-report-a-bug.yml", generate, update, path = ".github/ISSUE_TEMPLATE/20-report-a-bug.yml")
+        }
+
         private fun generate(templateName: String, generate: Boolean, update: Boolean, path: String = templateName) {
             val outputFile = repoDir.resolve(path)
             val outputFileExisted = outputFile.exists()

repoman/src/main/kotlin/org/metaborg/repoman/meta/RepoMetadata.kt

@@ -73,6 +73,8 @@ data class Files(
     val gradleRootProject: GradleRootProject = GradleRootProject(),
     /** The metadata for the GitHub workflows. */
     val githubWorkflows: GithubWorkflows = GithubWorkflows(),
+    /** The metadata for GitHub issue templates. */
+    val githubIssueTemplates: GithubIssueTemplates = GithubIssueTemplates(),
 )
 
 /** Metadata for the README.md file. */
@@ -186,6 +188,19 @@ data class GithubWorkflows(
     val buildDocs: Boolean = false,
 )
 
+/** Metadata for GitHub issue templates. */
+@Serializable
+data class GithubIssueTemplates(
+    /** Whether to generate the files. */
+    val generate: Boolean = true,
+    /** Whether to update the file. */
+    val update: Boolean = true,
+    /** Whether to automatically assign developers to issues. */
+    val assignDevelopers: Boolean = true,
+    /** Whether to use the GitHub Discussions tab. */
+    val useDiscussions: Boolean = true,
+)
+
 /** A Maven artifact. */
 @Serializable
 data class MavenArtifact(
@@ -209,7 +224,7 @@ data class GradlePlugin(
 /** A person. */
 @Serializable
 data class Person(
-    /** The ID of the person, usually their GitHub nickname. */
+    /** The GitHub nickname of the person. */
     val id: String? = null,
     /** The (full) name of the person. */
     val name: String,

repoman/src/main/resources/templates/github/ISSUE_TEMPLATE/20-report-a-bug.yml.kte

@@ -0,0 +1,80 @@
+@import org.metaborg.repoman.meta.RepoMetadata
+@param meta: RepoMetadata
+---
+@if(meta.files.gradleRootProject.update)
+# !! THIS FILE WAS GENERATED USING repoman !!
+# Modify `repo.yaml` instead and use `repoman` to update this file
+# See: https://github.com/metaborg/metaborg-gradle/
+
+@endif
+name: "🐞 Report a Bug"
+description: File a bug report or issue for any project in ${meta.title}.
+title: "[Bug]: "
+labels: ["bug", "triage"]
+@if(meta.files.githubIssueTemplates.assignDevelopers)
+assignees:
+  @for(person in meta.developers)
+  - ${person.id}
+  @endfor
+@endif
+body:
+  @if(meta.files.gradleRootProject.includedBuilds.isNotEmpty() || meta.files.gradleRootProject.includedProjects.isNotEmpty())
+  - type: dropdown
+    id: project
+    attributes:
+      label: For which project in this repository does the issue occur?
+      multiple: true
+      options:
+        @for(project in meta.files.gradleRootProject.includedProjects)
+        - "${project.name}"
+        @endfor
+        @for(build in meta.files.gradleRootProject.includedBuilds)
+        - "${build.name}"
+        @endfor
+  @else
+  - type: textarea
+    attributes:
+      label: Project
+      description: For which project in this repository does the issue occur?
+    validations:
+      required: false
+  @endif
+  - type: textarea
+    attributes:
+      label: Version
+      description: The version of Spoofax or the commit of this project where the issue occurs.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Describe the issue
+      description: A clear and concise description of what the bug is.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Expected Behavior
+      description: A concise description of what you expected to happen.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Actual Behavior
+      description: A concise description of what happened instead.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Steps To Reproduce
+      description: Steps to reproduce the behavior.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Anything else?
+      description: |
+        Links? References? Anything that will give us more context about the issue you are encountering!
+
+        Tip: You can attach images, log files, or an example project by clicking this area to highlight it and then dragging files in.
+    validations:
+      required: false

repoman/src/main/resources/templates/github/ISSUE_TEMPLATE/config.yml.kte

@@ -0,0 +1,22 @@
+@import org.metaborg.repoman.meta.RepoMetadata
+@param meta: RepoMetadata
+---
+blank_issues_enabled: false
+contact_links:
+  - name: 📚 Spoofax Documentation
+    url: https://www.spoofax.dev/
+    about: Documentation about Spoofax and all included Meta-Languages.
+  - name: ⁉️ Spoofax Support Page
+    url: https://www.spoofax.dev/support
+    about: Information on Spoofax Support, and how to get in touch.
+  - name: 🙋🏽 Spoofax Users Channel
+    url: https://slde.slack.com/archives/C7254SF60
+    about: The Spoofax Users channel on Slack. See the Spoofax Support Page on how to gain access.
+  @if(meta.files.githubIssueTemplates.useDiscussions)
+  - name: 💬 Discussions
+    url: https://github.com/${meta.repoOwner}/${meta.repoName}/discussions/
+    about: Alternatively, ask questions in the Discussions tab.
+  @endif
+  - name: 🛡️ Security issue
+    url: https://github.com/${meta.repoOwner}/${meta.repoName}/security/advisories/new
+    about: Security issue? Do not report security issues publicly, but create a private advisory.