Terraform: Review facilitation actions (#1)

tf-lint/action.yml

@@ -0,0 +1,21 @@
+name: Terraform lint
+description: Initialize terraform, check formating and validate
+author: withlogicco
+runs:
+  using: composite
+  steps:
+    - id: fmt
+      run: terraform fmt -check
+      shell: bash
+    - id: init
+      run: terraform init
+      shell: bash
+    - id: validate
+      run: terraform validate -no-color
+      shell: bash
+
+outputs:
+  fmt:
+    description: Outcome of `terraform fmt -check`
+    value: ${{ steps.fmt.outcome }}
+

tf-plan/action.yml

@@ -0,0 +1,21 @@
+name: Terraform Plan
+description: Calculate and report back the terraform plan
+author: withlogicco
+runs:
+  using: composite
+  steps:
+    - id: plan
+      run: terraform plan -no-color -input=false -out=tf-plan
+      continue-on-error: true
+      shell: bash
+    - id: show
+      run: terraform show -no-color tf-plan
+      shell: bash
+
+outputs:
+  outcome:
+    description: Outcome of `terraform plan`
+    value: ${{ steps.plan.outcome }}
+  plan:
+    description: Terraform plan
+    value: ${{ steps.show.outputs.stdout }}

tf-report/action.yml

@@ -0,0 +1,42 @@
+name: Terraform Report
+description: Report Terraform lint and plan in a comment
+author: withlogicco
+inputs:
+  plan:
+    description: Terraform plan
+    required: true
+  plan-outcome:
+    description: Terraform plan outcome
+    required: true
+  lint-outcome:
+    description: Terraform lint outcome
+    required: true
+  github-token:
+    description: The GitHub token to use for commenting the report
+    required: true
+runs:
+  using: composite
+  steps:
+    - uses: actions/github-script@v6
+      with:
+        github-token: ${{ inputs.github-token }}
+        script: |
+          const output = `#### Lint 🖌\`${{ inputs.lint-outcome }}\`
+          #### Plan 📖\`${{ inputs.plan-outcome }}\`
+
+          <details><summary>Show Plan</summary>
+
+          \`\`\`\n
+          ${{ inputs.plan }}
+          \`\`\`
+
+          </details>
+
+          *Pusher: @${{ github.actor }}*`;
+
+          github.rest.issues.createComment({
+            issue_number: context.issue.number,
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            body: output
+          })

tf-setup/action.yml

@@ -0,0 +1,12 @@
+name: Terraform setup
+description: Set up Terraform according taking .terraform-version into account
+author: withlogicco
+runs:
+  using: composite
+  steps:
+    - id: terraform-version
+      run: echo "version=$(cat .terraform-version)" >> $GITHUB_OUTPUT
+      shell: bash
+    - uses: hashicorp/setup-terraform@v2
+      with:
+        terraform_version: ${{ steps.terraform-version.outputs.version }}