SCADA Cloud Config API — Deployment
=====================================

1. COPY FILES TO THE VPS
   Put the configurator + this api folder under Apache's web root:

     /var/www/html/config/
         ├── configurator.html
         ├── report_engine.html
         ├── powerlimit.html
         └── api/
             ├── _common.php
             ├── plants.php
             ├── upload.php
             ├── versions.php
             ├── download.php
             └── storage/        (created automatically on first run)

   (Rename this "cloud-api" folder to "api" when you copy it.)

2. PERMISSIONS — Apache (www-data) must be able to write storage/
     sudo chown -R www-data:www-data /var/www/html/config/api
     sudo chmod -R 775 /var/www/html/config/api

3. PHP must be installed + enabled in Apache
     sudo apt install -y php libapache2-mod-php
     sudo systemctl restart apache2

4. ACCESS
   Open:  https://YOUR-VPS/config/configurator.html
   The page calls api/plants.php, api/upload.php, etc. using RELATIVE
   paths — same origin, so no CORS setup is needed.

5. TEST THE API DIRECTLY (optional)
   List plants:
     https://YOUR-VPS/config/api/plants.php
   Should return: {"ok":true,"plants":[]}

ENDPOINTS
---------
  GET  api/plants.php
  POST api/plants.php      {action:add|edit|delete, id, name}
  POST api/upload.php      {plantId, kind:config|report, note, content}
  GET  api/versions.php?plantId=X[&kind=config|report]
  GET  api/download.php?plantId=X&file=Y.json

STORAGE LAYOUT
--------------
  api/storage/plants.json          (registry)
  api/storage/<plantId>/config_v_<ts>.json
  api/storage/<plantId>/config_v_<ts>.json.meta
  api/storage/<plantId>/report_v_<ts>.json

NOTES
-----
  - No authentication yet (add an API key later if needed).
  - Local folder-save in the configurator is UNCHANGED and independent.
  - Deleting a plant removes it from the registry but KEEPS its files on disk.