version: 1

ruleTemplates:
  ohrt-installOHRT:
    label: Install openHAB Rules Tools
    description: Installs a local copy of NPM and uses that to install OHRT
    tags:
      - OHRT
      - Version_1.0
    configDescriptions:
      path: 
        label: Path to openHAB's conf folder.
        description: Fully qualified path to the openHAB conf folder as seen from the openHAB process.
        type: TEXT
        required: true
        defaultValue: /etc/openhab
    actions:
      - id: "install_ohrt_action"
        label: "Install OHRT"
        description: "Installs NPM if it's not already and then installs OHRT"
        type: Script
        config:
          type: javascript
          script: |
            'use wrapper=true'
            const loggerBase = 'org.openhab.automation.ohrt-installOHRT.'+ruleUID;
            console.loggerName = loggerBase;
            //osgi.getService('org.apache.karaf.log.core.LogService').setLevel(console.loggerName, 'DEBUG');

            const ecl = actions.Exec.executeCommandLine;
            const timeout = time.Duration.ofSeconds(10);

            // run and log the output
            const logOutput = (action) => {
              const output = action();
              console.info(output);
              return output;
            }

            // append the stuff needed to run npm
            const 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");
            const 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');
            }