name: Deploy (core)

on:
  workflow_call:
    inputs:
      host:
        required: true
        type: string
      playbook:
        required: true
        type: string
      dry_run:
        required: false
        type: boolean
        default: false
    secrets:
      TAILSCALE_CLIENT_ID:
        required: true
      TAILSCALE_AUDIENCE:
        required: true
      SSH_PRIVATE_KEY:
        required: true
      AGE_SECRET_KEY:
        required: true

jobs:
  deploy:
    name: Deploy ${{ inputs.playbook }} → ${{ inputs.host }}
    runs-on: ubuntu-latest
    environment: production
    permissions:
      id-token: write
    steps:
      - uses: actions/checkout@v6

      - name: Cache pip packages
        uses: actions/cache@v5
        with:
          path: ~/.cache/pip
          key: pip-ansible

      - name: Cache Ansible collections
        uses: actions/cache@v5
        with:
          path: ~/.ansible
          key: ansible-galaxy-${{ hashFiles('ansible/requirements.yml') }}

      - name: Set up Tailscale
        uses: tailscale/github-action@v4
        with:
          oauth-client-id: ${{ secrets.TAILSCALE_CLIENT_ID }}
          audience: ${{ secrets.TAILSCALE_AUDIENCE }}
          tags: tag:ci

      - name: Set up SSH key
        run: |
          mkdir -p ~/.ssh
          echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/id_ed25519
          chmod 600 ~/.ssh/id_ed25519
          HOST_IP=$(grep "^${{ inputs.host }}[[:space:]]" ansible/inventory/hosts.ini | grep -o 'ansible_host=[^ ]*' | cut -d= -f2)
          if [ -n "$HOST_IP" ]; then
            ssh-keyscan -H "$HOST_IP" >> ~/.ssh/known_hosts 2>/dev/null || true
          fi

      - name: Install Ansible
        run: pip install ansible

      - name: Install Ansible collections
        run: ansible-galaxy install -r ansible/requirements.yml

      - name: Decrypt secrets
        uses: ./.github/actions/sops-decrypt
        with:
          age-key: ${{ secrets.AGE_SECRET_KEY }}

      - name: Run playbook
        working-directory: ansible/
        env:
          ANSIBLE_HOST_KEY_CHECKING: "false"
        run: |
          PLAYBOOK="${{ inputs.playbook }}"
          PLAYBOOK="${PLAYBOOK#playbooks/}"
          PLAYBOOK="${PLAYBOOK%.yml}.yml"
          if [ "$PLAYBOOK" != "deploy.yml" ]; then
            PLAYBOOK="playbooks/$PLAYBOOK"
          fi
          ARGS="--limit ${{ inputs.host }}"
          if [ "${{ inputs.dry_run }}" = "true" ]; then
            ARGS="$ARGS --check --diff"
          fi
          ansible-playbook "$PLAYBOOK" $ARGS