public with sharing class G_FilesService {
    public Boolean modeService {get; set;}
    public G_FilesService(){
        modeService = true;
    }
    /**
     * @description This method allow us to switch over the implementation
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-12-12
     * @return      void
    */
    public void switchToDummyImplementation(){
        modeService = false;
    }


    /**
     * @description This method retrieve a list of the current files stored on box associated to a record
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-29
     * @param   idPage The id of the current object
     * @param   itemBegin The integer that tell the method the start point to get the files
     * @param   itemLimit The integer that tell the method how many records to show from the itemBegin
     * @param   hierarchy Boolean to check if is a root folder
     * @param   NameOfClass The string that contains the name of the class of the current object
     * @param   IdPrivateFolder String for the private or public folder
     * @return      List of itemDetails
    */
    public List<itemDetails> getItems(Id idObject,Integer itemBegin, Integer itemLimit,boolean hierarchy, String NameOfClass, String IdPrivateFolder){
        return service(modeService, idObject, hierarchy,NameOfClass).getItems(Integer.valueOf(itemBegin), Integer.valueOf(itemLimit), IdPrivateFolder );
    }

    /**
     * @description This method retrieve the link to preview the file
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-29
     * @param   idFile The id of the file we want to preview
     * @param   IdObject The Id of the object that the file belongs to
     * @param   hierarchy Boolean to check if is a root folder
     * @param   NameOfClass The string that contains the name of the class of the current object
     * @return      String as route to preview the file
    */
    public String PreviewLink(String idFile, Id IdObject, boolean hierarchy,String NameOfClass){
        return service(modeService, idObject, hierarchy,NameOfClass).getPreviewLink(idFile);
    }

    /**
     * @description This method retrieve the link to delete the file
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-29
     * @param   idFile The id of the file we want to delete
     * @param   IdObject The Id of the object that the file belongs to
     * @param   hierarchy Boolean to check if is a root folder
     * @param   NameOfClass The string that contains the name of the class of the current object
     * @return      Boolean to indicate if the delete was successfully or not
    */
    public boolean deleteFile(String idFile, Id IdObject, boolean hierarchy,String NameOfClass){
        return service(modeService, idObject, hierarchy,NameOfClass).deleteFile(idFile);
    }

    /**
     * @description This method retrieve the link to download the file
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-29
     * @param   idFile The id of the file we want to download
     * @param   IdObject The Id of the object that the file belongs to
     * @param   hierarchy Boolean to check if is a root folder
     * @param   NameOfClass The string that contains the name of the class of the current object
     * @return      String as route to donwload the file
    */
    public String downloadLink(String idFile, Id IdObject, boolean hierarchy,String NameOfClass){
        return service(modeService, idObject, hierarchy,NameOfClass).getDownloadLink(idFile);
    }

    /**
     * @description This method retrieve the information about the files on the box
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-29
     * @param   idFolder The id of the folder we are going to check
     * @param   IdObject The Id of the object that the folder belongs to
     * @param   hierarchy Boolean to check if is a root folder
     * @param   NameOfClass The string that contains the name of the class of the current object
     * @return      String with format 'x-y' where x = Total items on the folder, y = start point of the files
    */
    public String getTotalItems(String idFolder, Id IdObject, boolean hierarchy,String NameOfClass){

        return service(modeService, idObject, hierarchy,NameOfClass).getTotalItemsValues(idFolder);
    }

    /**
     * @description This method create a folder of the current object in box
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-30
     * @param   herarchyPetition the boolean that represents if the current object its a root or a child
     * @param   IdObject The Id of the object that the folder belongs to
     * @param   NameOfClass The string that contains the name of the class of the current object
     * @return      String that tell us if the folder was created
    */
    public String createTheFolder(boolean herarchyPetition, Id IdObject,String NameOfClass){
        service(modeService, idObject, herarchyPetition,NameOfClass).createFolderInBox();
        return 'Folder Successfully created';
    }

    /**
     * @description This method upload the file to box
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-30
     * @param   idFolder the string that represents the current box folder where the file is going to be uploaded
     * @param   idNewFile The string of the file that just upload
     * @param   IdObject The Id of the object that the folder belongs to
     * @param   hierarchy Boolean to check if is a root folder
     * @param   NameOfClass The string that contains the name of the class of the current object
     * @return      String that notice us if it works
    */
    public String uploadFile(String idFolder, String idNewFile, Id IdObject, boolean hierarchy,String NameOfClass){
        service(modeService, idObject, hierarchy,NameOfClass).uploadFile(idFolder, idNewFile);
        return 'Succesfully';
    }

    /**
     * @description This method consult if the current object has a folder assoicated in box
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-30
     * @param   IdObject The Id of the object that the folder belongs to
     * @param   NameOfClass String that contains the name of the class that belongs to
     * @return      String with the box folder id
    */
    public String thisObjectHasFolder(Id IdObject, String NameOfClass){
        return service(modeService, idObject, false, NameOfClass).thisObjectHasFolder(IdObject);
    }

    /**
     * @description This method consult the permission set of the current user
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-30
     * @param   IdObject The Id of the object that the folder belongs to
     * @param   NameOfClass String that contains the name of the class that belongs to
     * @return      boolean true if is allow to delete a file, false otherwise
    */
    public boolean thisUserCanDelete(Id IdObject, String NameOfClass){
        return service(modeService, idObject, false, NameOfClass).thisUserCanDelete();
    }

    /**
     * @description This method consult the permission set of the current user
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-30
     * @param   IdObject The Id of the object that the folder belongs to
     * @param   NameOfClass String that contains the name of the class that belongs to
     * @return      boolean true if is allow to see, false otherwise
    */
    public boolean thisUserCanUseFilesComponent(Id IdObject, String NameOfClass){
        return service(modeService, idObject, false, NameOfClass).thisUserCanUseFilesComponent();
    }

    /**
     * @description This method check is exists a private folder related to the current object
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-30
     * @param   IdObject The Id of the object that the folder belongs to
     * @param   NameOfClass String that contains the name of the class that belongs to
     * @return      String with the id of the private folder
    */
    public String existPrivateFolder(Id IdObject, String NameOfClass){
        return service(modeService, idObject, false, NameOfClass).existPrivateFolder();
    }

    /**
     * @description This method create a private folder
     *
     * @author      Christofer Flores, cristofer@softwareallies.com
     * @date        2016-11-30
     * @param   IdObject The Id of the object that the folder belongs to
     * @param   NameOfClass String that contains the name of the class that belongs to
     * @return      String with the id of the private folder we just create
    */
    public String createPrivateFilesFolder(Id IdObject, String NameOfClass){
        return service(modeService, idObject, false, NameOfClass).createPrivateFilesFolder();
    }


    private interface IFilesService{
        boolean deleteFile(String IdFile);
        List<itemDetails> getItems(Integer itemBegin, Integer itemLimit, String val);
        String getPreviewLink(String idFile);
        String getDownloadLink(String idFile);
        String getTotalItemsValues(String idFolder);
        void createFolderInBox();
        void uploadFile(String idFolder, String idNewFile);
        String thisObjectHasFolder(Id idObject);
        boolean thisUserCanDelete();
        boolean thisUserCanUseFilesComponent();
        String existPrivateFolder();
        String createPrivateFilesFolder();
    }

/**
* @author Christofer Flores
* @date 11/11/2016
* @description Frontend-Side Methods
*
*/
  public class DummyImplementation implements IFilesService{

        /**
         * @description This method retrieve a list of the current files stored on box associated to a record
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-11-29
         * @param   itemBegin The integer that tell the method the start point to get the files
         * @param   itemLimit The integer that tell the method how many records to show from the itemBegin
         * @param   val String to tell the method if is private or public folder
         * @return      List of itemDetails
        */
        public List<itemDetails> getItems(Integer itemBegin, Integer itemLimit, String val){
            itemDetails file_1       = new itemDetails();
            file_1.Id                        = '00l41000gfebh31';
            file_1.FileName              = 'services.pdf';
            file_1.CreatedDate       = '20/12/16';
            file_1.ModifiedDate      = '21//12/16';
            file_1.PreviewLink       = 'https://www.google.com';
            itemDetails file_2       = new itemDetails();
            file_2.Id                        = '10e4p00efebh31';
            file_2.FileName              = 'libros.txt';
            file_2.CreatedDate       = '23/04/18';
            file_2.ModifiedDate      = '25/04/19';
            file_2.PreviewLink       = 'http://www.online-image-editor.com/';
            itemDetails file_3       = new itemDetails();
            file_3.Id                        = '10e4k0fefe2h31';
            file_3.FileName              = 'charts_2015.jpg';
            file_3.CreatedDate       = '11/10/15';
            file_3.ModifiedDate      = '15/07/18';
            file_3.PreviewLink       = 'http://www.online-image-editor.com/';
            List<itemDetails> files_data = new List<itemDetails> {  file_1, file_2, file_3 };
            return files_data;
        }

        /**
         * @description This method retrieve the link to preview the file
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-11-29
         * @param   idFile The id of the file we want to preview
         * @return      String as route to preview the file
        */
        public String getPreviewLink(String idFile){
            if(IdFile == null){
                return null;
            }
            return 'UrlToPreviewTheFile';
        }

        /**
         * @description This method retrieve the link to delete the file
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-11-29
         * @param   idFile The id of the file we want to delete
         * @return      Boolean to indicate if the delete was successfully or not
        */
        public boolean deleteFile(String IdFile){
            if(IdFile == null){
                return false;
            }
            return true;
        }

        /**
         * @description This method retrieve the link to download the file
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-11-29
         * @param   idFile The id of the file we want to download
         * @return      String as route to donwload the file
        */
        public String getDownloadLink(String idFile){
            if(IdFile == null){
                return null;
            }
            return 'UrlToDownloadTheFile';
        }


        /**
         * @description This method retrieve the information about the files on the box
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-11-29
         * @param   idFolder The id of the folder we are going to check
         * @return      String with format 'x-y' where x = Total items on the folder, y = start point of the files
        */
        public String getTotalItemsValues(String idFolder){
            if(idFolder == null){
                return null;
            }
            return '3-1';
        }

        /**
         * @description This method create a folder of the current object in box
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-11-30
         * @return      void
        */
        public void createFolderInBox(){
            String hello = 'Hi everyone';
        }


        /**
         * @description This method upload the file to box
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-11-30
         * @param   idFolder the string that represents the current box folder where the file is going to be uploaded
         * @param   idNewFile The string of the file that just upload
         * @return      void
        */
        public void uploadFile(String idFolder, String idNewFile){
            String response = 'Should be uploading to Box.com';
        }

        /**
         * @description This method consult if the current object has a folder assoicated in box
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-12-14
         * @param   IdObject The Id of the object that the folder belongs to
         * @return      String with the box folder id
        */
        public String thisObjectHasFolder(String idObject){
            return 'It Has Box Folder';
        }

        /**
         * @description This method check the permission set of the current user to check if is allow to delete files
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-12-14
         * @return      boolean true if is allow, false otherwise
        */
        public boolean thisUserCanDelete(){
            return true;
        }

        /**
         * @description This method check if the user can use de component
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-12-14
         * @return      boolean true if the user can use it, false otherwise
        */
        public boolean thisUserCanUseFilesComponent(){
            return true;
        }

        /**
         * @description This method consult if the current object has a private folder assoicated in box
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-12-14
         * @return      String with the private box folder id
        */
        public string existPrivateFolder(){
            return '11506645590';
        }

        /**
         * @description This method create the private folder in box of the current object
         *
         * @author      Christofer Flores, cristofer@softwareallies.com
         * @date        2016-12-14
         * @return      String with the private box folder id that we just create
        */
        public string createPrivateFilesFolder(){
            return '11506645590';
        }

  }

/**
* @author Cristian Venegas
* @date 11/11/2016
* @description Production Box API Methods
*
*/
  public class ProductionImplementation implements IFilesService{

    G_ObjectsUsingBoxInterface gobyObject;
    /**
     * @description This constructor initialize the related class of the current object
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    8/12/2016
     * @param   IdObject; id of current object sales force to instance the match class
     * @param   hierarchy: Boolean value to know if the cration folder has a parent folder
    */
        public ProductionImplementation(Id IdObject, boolean hierarchy, String NameOfClass){
            gobyObject = (G_ObjectsUsingBoxInterface)Type.forName(NameOfClass).newInstance();
            gobyObject.constructor(IdObject, hierarchy);
        }

    /**
     * @description This method delete a file in box.com
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    8/12/2016
     * @param   IdFile; id of file stored in box
     * @return  Boolean value to know if the box file are deleted
    */
        public boolean deleteFile(String IdFile){
            return gobyObject.deleteFile(IdFile);
        }
    /**
     * @description This method get a list of items from box.com
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    8/12/2016
     * @param   itemBegin; integer value of the list item going to start when get a list items
     * @param   itemLimit; integer value about limit of items to get
     * @param   idPrivateFolder; id folder box where the items is gonna get it
     * @return  Boolean value to know if the box file are deleted
    */
        public List<itemDetails> getItems(Integer itemBegin, Integer itemLimit, String idPrivateFolder){
            return gobyObject.getRecordsItem(itemBegin, itemLimit, idPrivateFolder);
        }
    /**
     * @description This method get a preview link of a file stored in box
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    8/12/2016
     * @param   idFile; id of a file stored in box
     * @return  String URL to can see the file on new tab
    */
        public String getPreviewLink(String idFile){
            return gobyObject.generatepreviewLink(idFile);
        }
    /**
     * @description This method get a termporal download link
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    8/12/2016
     * @param   idFile; id of a file stored in box
     * @return  String URL to download the currently file
    */
        public String getDownloadLink(String idFile){
            return gobyObject.getDownloadLink(idFile);
        }
     /**
     * @description This method get the total items stored an folder box.com
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    8/12/2016
     * @param   idFolder; id of a folder stored in box
     * @return  String value of a total items that this folder contains
     */
        public String getTotalItemsValues(String idFolder){
            return gobyObject.getTotalItems(idFolder);
        }
    /**
     * @description This method run the create folder in box making match with the current object from salesforce
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    8/12/2016
     */
        public void createFolderInBox(){
            gobyObject.createFolders();
        }
    /**
     * @description This method make a callout to webservice when the file is uploaded
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    8/12/2016
     * @param   idFolder; id of a folder where the new file is gonna stored in box
     */
        public void uploadFile(String idFolder, String idNewFile){
            gobyObject.saveFileObject(idFolder, idNewFile);
        }
    /**
     * @description This method return a id of box folder
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    9/12/2016
     * @param   idFolder; id of a current object
     */
        public String thisObjectHasFolder(String idObject){
            return gobyObject.thisObjectHasBoxId(idObject);
        }
    /**
     * @description This method return a boolean value to know if the current user have permissions to delete a file
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    9/12/2016
     */
        public boolean thisUserCanDelete(){
            return gobyObject.thisUserCanDelete();
        }
    /**
     * @description This method return a boolean value to know if the current user can use the files component
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    9/12/2016
     */
        public boolean thisUserCanUseFilesComponent(){
            return gobyObject.thisUserCanUseFilesComponent();
        }
    /**
     * @description This method return a boolean value to know if the current folder of a goby object have a private folder
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    9/12/2016
     */
        public string existPrivateFolder(){
            return gobyObject.existPrivateFolder();
        }
    /**
     * @description This method return a boolean value to know if the current folder of a goby object have a private folder
     * @author  Cristian Venegas, cristian.venegas@softwareallies.com
     * @date    9/12/2016
     */
        public string createPrivateFilesFolder(){
            return gobyObject.createPrivateFilesFolder();
        }
  }

  private static IFilesService service(boolean Production, Id idObject, boolean hierarchy, String NameOfClass){
    return (Production ? (IFilesService) new ProductionImplementation(idObject, hierarchy,NameOfClass) : (IFilesService) new DummyImplementation());
  }


  /**
    * @author Christofer Flores
    * @date 11/11/2016
    * @description Inner Class
    *
 */
  public class itemDetails{
        @AuraEnabled
        public String Id { get; set; }
        @AuraEnabled
        public String PreviewLink { get; set; }
        @AuraEnabled
        public String FileName { get; set; }
        @AuraEnabled
        public String CreatedDate { get; set; }
        @AuraEnabled
        public String ModifiedDate { get; set; }
    }
}