name: Deploy production

on:
  workflow_dispatch:

permissions:
  contents: read

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

env:
  DEPLOY_HOST: 103.117.123.53
  DEPLOY_PORT: "22000"
  DEPLOY_USER: root
  DEPLOY_PATH: /opt/jyotisha-app

jobs:
  deploy:
    runs-on: ubuntu-latest
    timeout-minutes: 30

    steps:
      - name: Checkout tested revision
        uses: actions/checkout@v4
        with:
          ref: ${{ github.sha }}

      - name: Reject stale CI revision
        id: revision
        run: |
          tested_sha="$(git rev-parse HEAD)"
          main_sha="$(git ls-remote origin refs/heads/main | awk '{print $1}')"
          if [ "$tested_sha" = "$main_sha" ]; then
            echo "deploy=true" >> "$GITHUB_OUTPUT"
            echo "Deploying current main revision $tested_sha"
          else
            echo "deploy=false" >> "$GITHUB_OUTPUT"
            echo "Skipping stale CI revision $tested_sha; current main is $main_sha"
          fi

      - name: Configure SSH
        if: steps.revision.outputs.deploy == 'true'
        env:
          SSH_PRIVATE_KEY: ${{ secrets.PRODUCTION_SSH_PRIVATE_KEY }}
        run: |
          install -m 700 -d ~/.ssh
          printf '%s\n' "$SSH_PRIVATE_KEY" > ~/.ssh/jyotisha-production
          chmod 600 ~/.ssh/jyotisha-production
          printf '%s\n' '[103.117.123.53]:22000 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHQJvN2Mo3Yq8e6ZIK4P2blJ5Vjj0HbknEuk7TyjhMbO' > ~/.ssh/known_hosts

      - name: Sync and rebuild
        if: steps.revision.outputs.deploy == 'true'
        env:
          DEPLOY_GIT_SHA: ${{ github.sha }}
        run: |
          SSH_OPTIONS="-i $HOME/.ssh/jyotisha-production -p $DEPLOY_PORT -o BatchMode=yes -o IdentitiesOnly=yes -o ServerAliveInterval=30 -o ServerAliveCountMax=20"
          RSYNC_SSH="ssh $SSH_OPTIONS"
          rsync -az --delete \
            --exclude='.git/' \
            --exclude='.env.production' \
            --exclude='frontend/node_modules/' \
            --exclude='frontend/.next/' \
            -e "$RSYNC_SSH" \
            ./ "$DEPLOY_USER@$DEPLOY_HOST:$DEPLOY_PATH/"

          ssh $SSH_OPTIONS "$DEPLOY_USER@$DEPLOY_HOST" \
            "cd '$DEPLOY_PATH' && GITHUB_SHA='$DEPLOY_GIT_SHA' docker compose --env-file .env.production -f deploy/docker-compose.server.yml up -d --build --remove-orphans"

      - name: Verify production
        if: steps.revision.outputs.deploy == 'true'
        env:
          DEPLOY_GIT_SHA: ${{ github.sha }}
        run: |
          curl --fail --silent --show-error --retry 12 --retry-delay 5 https://jyotisha.chat/login >/dev/null
          test "$(curl --silent --output /dev/null --write-out '%{http_code}' https://jyotisha.chat/api/account)" = "401"
          deployed_sha=""
          for attempt in $(seq 1 24); do
            deployed_sha="$(curl --fail --silent --show-error https://jyotisha.chat/api/health | python3 -c 'import json, sys; print(json.load(sys.stdin).get("deployment", {}).get("gitCommit", ""))')" || deployed_sha=""
            [ "$deployed_sha" = "$DEPLOY_GIT_SHA" ] && break
            sleep 5
          done
          test "$deployed_sha" = "$DEPLOY_GIT_SHA" || { echo "Production revision did not converge: expected $DEPLOY_GIT_SHA, got ${deployed_sha:-empty}" >&2; exit 1; }
          ssh -i ~/.ssh/jyotisha-production -p "$DEPLOY_PORT" \
            -o BatchMode=yes -o IdentitiesOnly=yes -o ServerAliveInterval=30 -o ServerAliveCountMax=20 \
            "$DEPLOY_USER@$DEPLOY_HOST" \
            "cd '$DEPLOY_PATH' && docker compose --env-file .env.production -f deploy/docker-compose.server.yml exec -T web node -e 'fetch(\"http://api:5200/api/health\").then(async r => { const body = await r.json(); if (!r.ok || body.status !== \"ok\" || body.swisseph_available !== true) process.exit(1); console.log(JSON.stringify(body)); })'"