name: tf-plan
on:
  workflow_call:
    inputs:
      tofu-version:
        required: false
        default: 1.7.1
        type: string
    secrets:
      gpg-key:
        required: true
        type: string
      tf-api-token:
        required: true
        type: string
      ssh-private-key:
        required: true
        type: string
      ssh-known-hosts:
        required: true
        type: string

jobs:
  otf-plan:
    name: Tofu Plan
    runs-on: ubuntu-latest

    steps:
      - uses: opentofu/setup-opentofu@v1
        with:
          tofu_version: ${{ inputs.tofu-version }}
          cli_config_credentials_token: ${{ secrets.tf-api-token }}
      - name: Clone repo
        uses: actions/checkout@v4
      - name: Clone blackbox repo
        uses: actions/checkout@v4
        with:
          repository: xaked/blackbox
          path: blackbox
          ref: master
      - name: Install blackbox
        shell: bash
        run: |
          cd blackbox || exit 1;
          make copy-install;
          cd ${{ github.workspace }};
          rm -rf blackbox;
      - name: Decrypt secrets
        shell: bash
        run: |
          echo ${{ secrets.gpg-key }} | base64 -d | gpg --import;
          blackbox_decrypt_all_files;
      - name: Setup SSH key
        uses: benoitchantre/setup-ssh-authentication-action@1.0.1
        with:
          private-key: ${{ secrets.ssh-private-key }}
          private-key-name: id_ed25519
          known-hosts: ${{ secrets.ssh-known-hosts }}
      - name: Restore tofu cache
        uses: actions/cache@v4
        id: cache-tofu-restore
        with:
          path: .terraform
          key: ${{ github.repository }}-${{ runner.os }}-${{ runner.arch }}-otf
      - name: Run tofu init
        shell: bash
        run: tofu init
      - name: Run tofu validate
        shell: bash
        run: tofu validate
      - name: Run tofu plan
        id: tfplan
        shell: bash
        run: tofu plan -detailed-exitcode -out=tfplan.binary -input=false;
        continue-on-error: true
      - name: Save exitcode to the artifacts
        shell: bash
        run: printf "${{ steps.tfplan.outputs.exitcode }}" > exitcode;
      - name: Upload artifacts
        uses: actions/upload-artifact@v5
        with:
          name: artifacts
          path: |
            tfplan.binary
            exitcode
      - name: Check if job errored
        shell: bash
        run: |
          if [ "$(cat exitcode)" == "1" ]; then
            exit 1;
          fi
      - name: Save tofu cache
        uses: actions/cache/save@v4
        id: cache-tofu-save
        with:
          path: .terraform
          key: ${{ steps.cache-tofu-restore.outputs.cache-primary-key }}