name: Deploy to Production

on:
  workflow_dispatch:
    inputs:
      version:
        description: 'Leave as "auto" to bump from latest git tag, or enter a specific version (e.g. v0.1.2)'
        required: false
        default: 'auto'
        type: string

jobs:
  deploy:
    name: Build and deploy
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        run: |
          git init
          git remote add origin https://x-access-token:${FORGEJO_TOKEN}@srvr.nu/git/hermes/jobhunt-platform.git
          git fetch --depth 1 origin ${GITHUB_SHA}
          git checkout FETCH_HEAD

      - name: Resolve version
        run: |
          INPUT_VERSION="${{ github.event.inputs.version }}"
          if [ -z "$INPUT_VERSION" ] || [ "$INPUT_VERSION" = "auto" ]; then
            git fetch --tags origin
            LATEST=$(git tag --list 'v*' --sort=-v:refname | head -1)
            if [ -z "$LATEST" ]; then LATEST="v0.0.0"; fi
            BASE="${LATEST#v}"
            MAJOR=$(echo "$BASE" | cut -d. -f1)
            MINOR=$(echo "$BASE" | cut -d. -f2)
            PATCH=$(echo "$BASE" | cut -d. -f3)
            PATCH=$(( ${PATCH:-0} + 1 ))
            VERSION="v${MAJOR:-0}.${MINOR:-0}.${PATCH}"
            echo "Latest tag: $LATEST → auto-bumped to $VERSION"
          else
            VERSION="$INPUT_VERSION"
            echo "Using manual version: $VERSION"
          fi
          if ! echo "$VERSION" | grep -qE '^v[0-9]+\.[0-9]+\.[0-9]+$'; then
            echo "ERROR: resolved version '$VERSION' is not valid semver (expected vX.Y.Z)"
            exit 1
          fi
          echo "VERSION=$VERSION" >> "$GITHUB_ENV"

      - name: Tag version
        run: |
          git tag -d ${{ env.VERSION }} 2>/dev/null || true
          git push origin --delete ${{ env.VERSION }} 2>/dev/null || true
          git tag ${{ env.VERSION }}
          git push origin ${{ env.VERSION }}

      - name: Write production .env
        env:
          LLM_PRIMARY_KEY: ${{ secrets.LLM_PRIMARY_KEY }}
        run: |
          {
            printf 'DATABASE_URL=%s\n' 'postgresql://jobhunt:jobhunt@postgres:5432/jobhunt'
            printf 'LLM_PRIMARY_BASE_URL=%s\n' 'https://ollama.com/v1'
            printf 'LLM_PRIMARY_KEY=%s\n' "$LLM_PRIMARY_KEY"
            printf 'LLM_PRIMARY_MODEL=%s\n' 'glm-5.2'
            printf 'LLM_CHEAP_MODEL=%s\n' 'glm-5.2'
            printf 'LLM_STRONG_MODEL=%s\n' 'glm-5.2'
            printf 'VITE_API_BASE=%s\n' '/api'
          } > .env

      - name: Build and start production stack
        run: |
          docker compose -p jobhunt -f docker-compose.prod.yml down
          docker compose -p jobhunt -f docker-compose.prod.yml up --build -d

      - name: Health checks with rollback
        run: |
          echo "Waiting for services to start..."
          sleep 15

          API_OK=false
          for i in 1 2 3 4 5 6 7 8 9 10; do
            if docker run --rm --network jobhunt_default curlimages/curl:8.5.0 \
               -sf http://jobhunt-api:8000/api/health > /dev/null; then
              echo "API is healthy"
              API_OK=true
              break
            fi
            echo "API check attempt $i failed, retrying in 5s..."
            sleep 5
          done

          WEB_OK=false
          for i in 1 2 3 4 5; do
            if docker run --rm --network jobhunt_default curlimages/curl:8.5.0 \
               -sf http://jobhunt-web/ > /dev/null; then
              echo "Frontend is serving"
              WEB_OK=true
              break
            fi
            echo "Frontend check attempt $i failed, retrying in 5s..."
            sleep 5
          done

          if [ "$API_OK" != "true" ] || [ "$WEB_OK" != "true" ]; then
            echo ""
            echo "═══════════════════════════════════════════════════"
            echo "  HEALTH CHECK FAILED — DIAGNOSTICS"
            echo "═══════════════════════════════════════════════════"
            echo ""
            docker compose -p jobhunt -f docker-compose.prod.yml ps
            echo ""
            echo "--- API logs ---"
            docker logs jobhunt-api 2>&1 | tail -80 || true
            echo ""
            echo "--- Postgres logs ---"
            docker logs jobhunt-postgres 2>&1 | tail -30 || true
            echo ""
            echo "═══════════════════════════════════════════════════"
            echo "  ROLLING BACK DEPLOYMENT"
            echo "═══════════════════════════════════════════════════"
            echo ""
            docker compose -p jobhunt -f docker-compose.prod.yml down
            echo ""
            echo "Rolled back. Containers stopped. DB volume preserved."
            echo "Read API logs above to find the root cause before redeploying."
            exit 1
          fi

      - name: Seed demo data (idempotent)
        run: |
          docker run --rm --network jobhunt_default curlimages/curl:8.5.0 \
            -sf -X POST http://jobhunt-api:8000/api/concierge/seed-demo || \
            echo "WARN: demo seed failed (non-fatal)"

      - name: Print deploy status
        run: |
          echo ""
          echo "═══════════════════════════════════════════════════"
          echo "  Deployed ${{ env.VERSION }} to production"
          echo "═══════════════════════════════════════════════════"
          echo ""
          docker compose -p jobhunt -f docker-compose.prod.yml ps
          echo ""
          echo "Web UI: http://tocke:8085"
          echo "API:    http://tocke:8000/api/health"
          echo ""