oglimmer/fulgens

const replaceVariables = obj => {
    obj.Value = obj.Value.replace('$$TMP$$', 'localrun');
    return obj;
}

const reduceDuplicates = envVars => {
    return envVars.reduce((accu, curval) => {
      const foundElement = accu.find(e => e.Name === curval.Name);
      if (foundElement) {
        foundElement.Value += ` ${curval.Value}`;
      } else {
        accu.push(curval);
      }
      return accu;
    }, []);
}

class CEnvVars {

    /**
     * @param Array of Object(Name:string, Value:string, Source:string(optional), DockerOnly:boolean(optional))
     *                 Name is the variable name
     *                Value is the variable value ($$TMP$$, $$VALUE$$)
     *                Source is the source component name (used for $$VALUE$$)
     *                 DockerOnly defines for attach to docker only
     */
    constructor(softwareComponentName, envVarsConfig = []) {
        this.softwareComponentName = softwareComponentName;
        this.envVars = envVarsConfig.filter(e => e.DockerOnly !== true).map(e => replaceVariables(e));
        this.envVarsDocker = envVarsConfig.filter(e => e.DockerOnly === true).map(e => replaceVariables(e));
    }

    push(obj) {
        if(obj.DockerOnly === true) { throw "DockerOnly in non docker"; }
        obj = replaceVariables(obj);
        this.envVars.push(obj);
    }

    pushForDocker(obj) {
        obj = replaceVariables(obj);        
        this.envVarsDocker.push(obj);
    }

    toDocker() {
        return reduceDuplicates([...this.envVars, ...this.envVarsDocker])
            .map(p => {
                let value;
                if (p.Source) {
                    value = p.Value.replace('$$VALUE$$', `$REPLVAR_${this.softwareComponentName.toUpperCase()}_${p.Source.toUpperCase()}`);
                } else {
                    value = p.Value;
                }
                return `-e ${p.Name}="${value}"`;
            }).join(' ');
    }

    toShell() {
        return this.envVars.map(p => `${p.Name}="${p.Value}"`).join(' ');
    }

    toShellExport() {
        return this.envVars.map(p => `export ${p.Name}="${p.Value}"`).join('; ');
    }

    toShellExportJavaOpts() {
        return 'export JAVA_OPTS="$JAVA_OPTS ' + this.envVars.map(p => `-D${p.Name}=${p.Value}`).join(' ') + '"';
    }

}

module.exports = CEnvVars;