basecamp-guide/lib/LaravelProvider.js

Task automator for the Basecamp Framework.

// Dependecies
var fs = require('fs');
var Colors = require('colors');
var FileSys = require('./FileSystem.js');

/*
 * Adds new Service Providers to Laravel
 */

var LaravelProvider = {
    configFile : 'config/app.php',

    add : function(provider) {
        // first search comment 
        // yes-comment 
        //       -> add service provider
        // no-comment 
        //       -> search end '],' and add comment
        //       -> add service provider
        //       
        var that = this;
        FileSys.modifyFile('config/app.php', function(fileContent) {
            if (that.providerExist(provider, fileContent)) {
                console.log('Provider already exist.'.yellow);
                return undefined; // skip writing a new file
            }

            var commentPosition = that.searchComment(fileContent);
            
            if (! that.commentExist(commentPosition)) {
               fileContent = that.addCommentTo(fileContent);
               commentPosition = that.searchComment(fileContent);
            }

            var writePosition = that.getEndOfComment(fileContent, commentPosition);
            var providerText = '\n        '+ provider +'::class,';

            console.log('AuthServiceProvider ' + 'added.'.green);
                
            return that.writeContentAtPosition(writePosition, providerText, fileContent);
        });
      
    },
    commentExist : function(position) {
        if (position >= 0 ) return true;
        return false;
    },
    searchComment : function(fileContent) { 
        var rexpression = /\* Basecamp Framework Service Providers.../;
        return fileContent.search(rexpression);
    },
    getEndOfComment : function(fileContent, commentPosition) {
        var position = this.searchNextPositionOf('/', fileContent, commentPosition);
        return position + 1;
    },
    writeContentAtPosition : function(position, content, fileContent) {
        var part1 = fileContent.slice(0, position);
        var part2 = fileContent.slice(position);
        
        return part1 + content + part2;
    },
    addCommentTo : function(fileContent) {
        var rexpression = /\'providers\' => \[/;
        var position = fileContent.search(rexpression);
        
        position = this.searchNextPositionOf(']', fileContent, position);
        var comment = '    /*\n         * Basecamp Framework Service Providers...\n         */ \n\n    ';
        
        return this.writeContentAtPosition(position, comment, fileContent);
        
    },
    searchNextPositionOf : function(searchChar, content, startPosition) {
        var position = -1;
        for (var i = startPosition; i <= content.length -1; i++) {
            if (content[i] == searchChar) {
                position = i;
                break;
            } 
        };

        return position;
    },
    providerExist : function(provider, fileContent) {
    
        var rexpression = new RegExp(provider.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&"));
        var position = fileContent.search(rexpression);

        if (position >= 0) return true;
        return false;
    }

};

module.exports  = LaravelProvider;