name: Auto-Deploy Changed Stacks

on:
  push:
    branches:
      - main

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 2

      - name: Detect changed stacks and trigger Komodo webhooks
        run: |
          set -euo pipefail

          # ---------------------------------------------------------------
          # Webhook map: stack-name → Komodo webhook URL
          # Komodo webhook URLs are self-authenticating (token is embedded
          # in the URL path). Fill in URLs from:
          #   Komodo UI → Stack → Webhooks tab → copy the full URL
          # ---------------------------------------------------------------
          declare -A WEBHOOK_MAP

          # heimdall stacks
          WEBHOOK_MAP["5etools"]="TODO"
          WEBHOOK_MAP["authentik"]="TODO"
          WEBHOOK_MAP["bentopdf"]="TODO"
          WEBHOOK_MAP["byparr"]="TODO"
          WEBHOOK_MAP["convertx"]="TODO"
          WEBHOOK_MAP["core"]="TODO"
          WEBHOOK_MAP["docker_registry"]="TODO"
          WEBHOOK_MAP["gitea"]="TODO"
          WEBHOOK_MAP["guardian"]="TODO"
          WEBHOOK_MAP["homelab-registry-mcp"]="TODO"
          WEBHOOK_MAP["karakeep"]="TODO"
          WEBHOOK_MAP["kitchenowl"]="TODO"
          WEBHOOK_MAP["ntfy"]="TODO"
          WEBHOOK_MAP["overseerr"]="TODO"
          WEBHOOK_MAP["profilarr"]="TODO"
          WEBHOOK_MAP["prowlarr"]="TODO"
          WEBHOOK_MAP["radarr"]="TODO"
          WEBHOOK_MAP["sabnzbd"]="TODO"
          WEBHOOK_MAP["snapotter"]="TODO"
          WEBHOOK_MAP["sonarr"]="TODO"
          WEBHOOK_MAP["sparkyfitness"]="TODO"
          WEBHOOK_MAP["tautulli"]="TODO"
          WEBHOOK_MAP["tracearr"]="TODO"
          WEBHOOK_MAP["trek"]="TODO"
          WEBHOOK_MAP["vaultwarden"]="TODO"
          WEBHOOK_MAP["vscode"]="TODO"
          WEBHOOK_MAP["weatherchannel"]="TODO"
          WEBHOOK_MAP["wizarr"]="TODO"
          WEBHOOK_MAP["zipline"]="TODO"

          # waldorf stacks
          WEBHOOK_MAP["immich"]="TODO"
          WEBHOOK_MAP["openwebui"]="TODO"
          WEBHOOK_MAP["pinchflat"]="TODO"
          WEBHOOK_MAP["plex"]="TODO"
          WEBHOOK_MAP["tunarr"]="TODO"

          # ---------------------------------------------------------------
          # Detect changed paths vs the previous commit
          # ---------------------------------------------------------------
          CHANGED_FILES=$(git diff --name-only HEAD~1 HEAD)

          echo "=== Changed files ==="
          if [[ -z "$CHANGED_FILES" ]]; then
            echo "  (none)"
          else
            echo "$CHANGED_FILES"
          fi
          echo ""

          # ---------------------------------------------------------------
          # Parse changed paths → extract {node} and {stack}
          # Expected pattern: nodes/{node}/{stack}/...
          # ---------------------------------------------------------------
          declare -A SEEN_STACKS
          declare -a STACKS_TO_DEPLOY
          declare -a UNMATCHED_PATHS

          while IFS= read -r filepath; do
            [[ -z "$filepath" ]] && continue

            IFS='/' read -ra PARTS <<< "$filepath"

            # Must start with "nodes" and have at least 4 components
            # (nodes / {node} / {stack} / file)
            [[ "${PARTS[0]}" != "nodes" ]] && continue
            [[ "${#PARTS[@]}" -lt 4 ]] && continue

            node="${PARTS[1]}"
            stack="${PARTS[2]}"

            [[ -z "$stack" ]] && continue

            # Deduplicate: skip if this stack was already queued
            [[ -n "${SEEN_STACKS[$stack]+_}" ]] && continue
            SEEN_STACKS["$stack"]=1

            if [[ -n "${WEBHOOK_MAP[$stack]+_}" ]]; then
              STACKS_TO_DEPLOY+=("$stack")
              echo "  Queued for deploy: $stack  (node: $node)"
            else
              UNMATCHED_PATHS+=("$filepath  (stack: $stack)")
            fi
          done <<< "$CHANGED_FILES"

          echo ""

          # ---------------------------------------------------------------
          # Warn about paths that have no webhook entry — not silent
          # ---------------------------------------------------------------
          if [[ "${#UNMATCHED_PATHS[@]}" -gt 0 ]]; then
            echo "=== WARNING: paths with no matching webhook entry ==="
            for p in "${UNMATCHED_PATHS[@]}"; do
              echo "  - $p"
            done
            echo "  Add these stack names to WEBHOOK_MAP in this workflow."
            echo ""
          fi

          # ---------------------------------------------------------------
          # Nothing under nodes/ changed
          # ---------------------------------------------------------------
          if [[ "${#STACKS_TO_DEPLOY[@]}" -eq 0 ]]; then
            echo "No stack changes detected — nothing to deploy."
            exit 0
          fi

          # ---------------------------------------------------------------
          # POST to each Komodo webhook
          # ---------------------------------------------------------------
          echo "=== Triggering Komodo webhooks ==="
          FAILED=0

          for stack in "${STACKS_TO_DEPLOY[@]}"; do
            url="${WEBHOOK_MAP[$stack]}"

            if [[ "$url" == "TODO" ]]; then
              echo "  SKIP: $stack — webhook URL not configured yet (fill in WEBHOOK_MAP)"
              continue
            fi

            echo -n "  → $stack ... "
            HTTP_STATUS=$(curl --silent --show-error --output /dev/null \
              --write-out "%{http_code}" \
              --max-time 30 \
              --request POST "$url" \
              --header "Content-Type: application/json" \
              --data '{"trigger":"gitea-push"}')

            if [[ "$HTTP_STATUS" =~ ^2 ]]; then
              echo "HTTP $HTTP_STATUS OK"
            else
              echo "HTTP $HTTP_STATUS FAILED"
              FAILED=1
            fi
          done

          echo ""
          if [[ "$FAILED" -ne 0 ]]; then
            echo "ERROR: One or more Komodo webhook POSTs returned a non-2xx status."
            exit 1
          fi

          echo "All webhooks triggered successfully."