uid: rules_tools:installOHRT
label: Install OHRT
description: Checks for npm, installs node if it's missing, then uses npm to install openhab_rules_tools
configDescriptions:
  - name: path
    type: TEXT
    label: Path to openHAB's conf folder.
    required: true
    description: Fully qualified path to the openHAB conf folder as seen from the openHAB process.
    defaultValue: /etc/openhab
triggers: []
conditions: []
actions:
  - inputs: {}
    id: "1"
    configuration:
      type: application/javascript
      script: >-
        // Version 0.2


        var ecl = actions.Exec.executeCommandLine;

        var timeout = time.Duration.ofSeconds(10);


        // run and log the output

        var logOutput = (action) => {
          const output = action();
          console.info(output);
          return output;
        }


        // append the stuff needed to run npm

        var eclNode = (cmd) => {
          console.info(cmd);
          return logOutput(() => ecl(timeout, 'bash', '-c', '\. $HOME/.nvm/nvm.sh && ' + cmd));
        }


        // See if npm is installed

        console.info("Checking to see if npm is available");

        var npmVersion = eclNode('npm --version');


        // Install npm using nvm

        if(npmVersion === null || npmVersion.contains('No such file or directory')) {
          console.info('npm is not installed or not in the path, attempting to install it to user\'s home');

          console.info('Downloading the nvm.sh script...');
          logOutput(() => ecl(timeout, 'wget', 'https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.3/install.sh'));

          console.info('Fixing permissions on installation script...')
          logOutput(() => ecl(timeout, 'chmod', 'a+x', 'install.sh'));

          console.info('Installing node using nvm script...');
          logOutput(() => ecl(timeout, './install.sh'));
          
          console.info('Installing node 22...');
          eclNode('nvm install 22');
          
          console.info('Verifying npm is now available...');
          npmVersion = eclNode('npm --version');
        }


        // Still no npm, log an error

        if(npmVersion === null) {
          console.error('Installation of node failed. This script is unlikely to work for you and you will need to install manually.');
        }


        // Attempt to install openhab_rules_tools

        else {
          console.info('Installing openhab_rules_tools...');
          eclNode('cd {{path}}/automation/js && npm install openhab_rules_tools');
          console.info('Done, check the output above for errors');
        }
    type: script.ScriptAction