# -----------------------------------------------------------------------------
# cameleer-website — Deploy to Hetzner Webhosting L
#
# Runs ONLY on pushes to `main` and on manual dispatch from the Gitea UI.
# Does NOT run Lighthouse CI (that's in ci.yml — assume any commit that reached
# main already passed the full gate). Rebuilds fresh, runs the TBD guard, and
# rsyncs `dist/` to the origin over SSH with host-key pinning.
#
# Runner: self-hosted arm64 Gitea runner. Adjust `runs-on` if your runner's
# labels differ. Deploy target is Hetzner amd64 — arch mismatch is a non-issue
# because the bundle is static HTML/CSS/JS.
#
# Required secrets (repo settings → Actions → Secrets):
#   SFTP_HOST, SFTP_USER, SFTP_PATH, SFTP_KEY, SFTP_KNOWN_HOSTS
# Required variables (repo settings → Actions → Variables):
#   PUBLIC_AUTH_SIGNIN_URL, PUBLIC_AUTH_SIGNUP_URL, PUBLIC_SALES_EMAIL
# -----------------------------------------------------------------------------

name: deploy

on:
  push:
    branches: [main]
  workflow_dispatch:

concurrency:
  group: deploy-production
  cancel-in-progress: false

jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 15
    env:
      PUBLIC_AUTH_SIGNIN_URL: ${{ secrets.PUBLIC_AUTH_SIGNIN_URL }}
      PUBLIC_AUTH_SIGNUP_URL: ${{ secrets.PUBLIC_AUTH_SIGNUP_URL }}
      PUBLIC_SALES_EMAIL: ${{ secrets.PUBLIC_SALES_EMAIL }}

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Run unit tests (sanity check)
        run: npm test

      - name: Build site
        run: npm run build

      - name: Guard — no TBD markers may ship in built HTML
        run: |
          if grep -rlE '(TBD):' dist 2>/dev/null | grep -E '\.(html|svg)$'; then
            echo "Built output contains unfilled <TBD:...>) markers."
            echo "Fill in imprint.astro and privacy.astro operator fields before merging to main."
            exit 1
          fi

      # Pin to v3 — Gitea Actions implements the v3 artifact protocol.
      # upload/download-artifact@v4 talk to a github.com-only backend and
      # fail with GHESNotSupportedError on Gitea / Forgejo / GHES.
      - name: Upload dist artifact
        uses: actions/upload-artifact@v3
        with:
          name: dist
          path: dist/
          retention-days: 7

  deploy:
    needs: build
    runs-on: ubuntu-latest
    timeout-minutes: 10

    steps:
      - name: Download dist artifact
        uses: actions/download-artifact@v3
        with:
          name: dist
          path: dist/

      - name: Configure SSH
        env:
          SFTP_KEY: ${{ secrets.SFTP_KEY }}
          SFTP_KNOWN_HOSTS: ${{ secrets.SFTP_KNOWN_HOSTS }}
        run: |
          set -e
          : "${SFTP_KEY:?SFTP_KEY secret must be set}"
          : "${SFTP_KNOWN_HOSTS:?SFTP_KNOWN_HOSTS secret must be set}"
          mkdir -p ~/.ssh
          printf '%s\n' "$SFTP_KEY" > ~/.ssh/id_ed25519
          chmod 600 ~/.ssh/id_ed25519
          printf '%s\n' "$SFTP_KNOWN_HOSTS" > ~/.ssh/known_hosts
          chmod 644 ~/.ssh/known_hosts
          # Hetzner Webhosting accounts are SFTP-only — they accept SSH for file
          # transfer but refuse remote command exec ("exec request failed on
          # channel 0"). rsync over SSH needs to spawn a remote rsync binary,
          # so it cannot work here. Use lftp's mirror instead, which speaks
          # SFTP end-to-end with the same key + known_hosts pinning.
          if ! command -v lftp >/dev/null 2>&1 || ! command -v ssh >/dev/null 2>&1; then
            if command -v sudo >/dev/null 2>&1; then SUDO=sudo; else SUDO=; fi
            $SUDO apt-get update -qq
            $SUDO apt-get install -y --no-install-recommends lftp openssh-client
          fi

      - name: Deploy via lftp (mirror over SFTP)
        env:
          SFTP_USER: ${{ secrets.SFTP_USER }}
          SFTP_HOST: ${{ secrets.SFTP_HOST }}
          SFTP_PATH: ${{ secrets.SFTP_PATH }}
        run: |
          # Fail loudly if any secret is missing — otherwise mirror --delete
          # could be directed at the SSH user's home root.
          : "${SFTP_USER:?SFTP_USER secret must be set}"
          : "${SFTP_HOST:?SFTP_HOST secret must be set}"
          : "${SFTP_PATH:?SFTP_PATH secret must be set}"
          # `-u USER,` (with trailing comma = empty password) tells lftp not
          # to prompt for a password; auth happens via the key passed to ssh
          # by sftp:connect-program. Heredoc body is unindented so lftp's
          # parser doesn't mistake leading whitespace for a continuation.
          # `debug 3` prints the ssh command lftp invokes — useful if this
          # ever breaks again.
          lftp <<LFTP
          debug 3
          set cmd:fail-exit yes
          set net:max-retries 1
          set sftp:connect-program 'ssh -a -x -i $HOME/.ssh/id_ed25519 -o StrictHostKeyChecking=yes -o UserKnownHostsFile=$HOME/.ssh/known_hosts'
          open -u $SFTP_USER, sftp://$SFTP_HOST
          mirror --reverse --delete --verbose --parallel=4 dist/ $SFTP_PATH/
          bye
          LFTP

      - name: Post-deploy smoke test
        run: |
          set -e
          echo "Checking security headers on www.cameleer.io..."
          HEADERS=$(curl -sI https://www.cameleer.io/ || echo "")
          echo "$HEADERS" | grep -i '^strict-transport-security:' || { echo "HSTS missing"; exit 1; }
          echo "$HEADERS" | grep -i '^content-security-policy:' || { echo "CSP missing"; exit 1; }
          echo "$HEADERS" | grep -i '^x-frame-options:' || { echo "XFO missing"; exit 1; }
          echo "All required headers present on the live origin."