web-terminaljs/core/core_modules.js

Web terminal, control actions and modules

'use strict'
const u = require('util').format;

const coreModules = {
    wtm_memory : true,
    wtm_restart: true,
    wtm_utils  : true,
    wtm_verbose: true,
    wtm_login  : true,
    wtm_echo   : true,
    wtm_table  : true,
    wtm_install: true
}
const corePath = __dirname+'/../modules/';//modules Core

module.exports ={
    load_module : async function(socketID,name,path = this.options.path,installed){
	if( socketID !== null){
	    this.emit(socketID,'Loading '+name);
	}	


		     
	//load module
	try{
	    this.module[name]  = require(path+name); 
	    this.list_modules[name] = true;
	}catch(err){
	    this.emit('LOGe','Error: load module ');
	    this.emit('LOGe',err.message);
	    this.emit('LOGe',err.stack);
	    delete this.list_modules[name];
	    return;
	}

	if( installed){	    
	    //save pkg installed
	    if(  this.module[name].pkg === undefined){
		this.module[name].pkg = {
		    version : '0.0',
		    author  : 'undefined'
		};
	    }
		 
	    this.installed[ name ] = {
		path    : this.options.path,
		md5     : await this.wtm_install_calc_checksum(name),
		version : this.module[name].pkg.version,
		author  : this.module[name].pkg.author
	    };
	}
	
	//set all functions
	for( let expName in this.module[name]){
	    if( expName == 'command'){continue;}

	    this[name+'_'+expName] = this.module[name][expName];
	}

	//set commands
	for( let moduleName in this.module[name].command){	
	    const command = this.module[name].command[moduleName];
	    this['module_'+moduleName]  = this[name+'_'+moduleName];//function command 

	    this.options.list_command[moduleName]       = command.description;
	    this.options.list_usage_command[moduleName] = command.usage;
	    this.options.list_auto_command[moduleName]  = command.auto;

	    this.emit('send_autocomplete',moduleName,this.options.list_auto_command[moduleName]);
	}
		
	//auto start 
	if( this.module[name].autoload){
	    try{
		this[name+'_load'](socketID);
	    }catch(err){
		this.emit('LOGe','Error: load not found function ');
		for( let moduleName in this.module[name].command){
		    delete this['module_'+moduleName];
		    delete this.options.list_command[moduleName];
		    delete this.options.list_usage_command[moduleName];
		    delete this.options.list_auto_command[moduleName];
		}
		this.emit('LOGe',err.message);
		this.emit('LOGe',err.stack);
		delete require.cache[require.resolve(path+name)];
		return;
	    }
	}
	
	if( socketID !== null){
	    this.emit(socketID,'Load '+name);
	}

    },
    unload_module : function(socketID,name,path = this.options.path){
	if( socketID !== null){
	    this.emit(socketID,'unloading '+name);
	}
	
	//auto unload
	if( this.module[name].autoload){
	    try{
		this[name+'_unload'](socketID);
	    }catch(err){
		this.emit('LOGe','Error: unload not found function, this module generate in program inestability.')
		this.emit('LOGe','You need restart all program whit out this module. ');
	    }
	}
	
	//unset all functions
	for( let expName in this.module[name]){
	    delete this[name+'_'+expName];
	}	

	//unset commands
	
	for( let moduleName in this.module[name].command){		
	    delete this['module_'+moduleName];
	    delete this.options.list_command[moduleName];
	    delete this.options.list_usage_command[moduleName];
	    delete this.options.list_auto_command[moduleName];
	    this.emit('del_autocomplete',moduleName);
	}
	
	//unload module
	delete require.cache[require.resolve(path+name)];
	delete this.module[name];
	this.list_modules[name] = false;

	if( socketID !== null){
	    this.emit(socketID,'unload '+name);
	}
    },
    start_modules : async function(){
	for( let name in coreModules){
	    this._load_module(null,name,corePath,false);
	}
	for( let name in this.options.modules){
	    if( this.options.modules[name]){
		this._load_module(null,name,this.options.path,true);
	    }
	}
    }
}