import { Injectable } from '@angular/core';
import { DropdownField } from '../../app/form/fields/dropdown/field-dropdown';
import { FieldBase } from '../../app/form/fields/field-base';
import { TextboxField } from '../../app/form/fields/textbox/field-textbox';
import { CheckBoxField } from '../../app/form/fields/checkbox/field-checkbox';
import { RadioBoxField } from '../../app/form/fields/radiobox/field-radiobox';
import { DataModel } from '../entities/DataModel';
import {Rule} from '../entities/common/rule';
import { GroupBase } from '../form/dynamic-form-group/group-base';
import { Attribute } from '../entities/model/attribute';
import { Param } from '../entities/model/param';
import { Section } from '../entities/model/section';

@Injectable()
export class dataModelBuilder {

   private dataModel : DataModel;
   private fields : FieldBase<any>[];

   public getDataModel(data){ 
      
      if(this.dataModel != null)
        return this.dataModel;

      this.dataModel = new DataModel();
      this.fields = this.buildFields(data.dataset.profile.viewstyle.definition.root.fields.field);
      this.dataModel.groups = this.getGroups(data.dataset.profile.viewstyle.definition.root.fieldGroups.fieldGroup, this.fields);
      this.dataModel.semanticAttr = new Array(new Attribute);
      //this.dataModel.semanticAttr = data.dataset.profile.definition.root.fields.field;
      this.dataModel.semanticAttr = this.getFieldsAttributes(data.dataset.profile.definition.root.fields.field, this.fields) ;
      this.dataModel.sections = this.getSections(data.dataset.profile.viewstyle.definition.root.sections.section, this.dataModel.groups) ;
      this.dataModel.buildIndex();
                        
      return this.dataModel;
    }
  
  
    private buildFields(fields:any[]) {
        let fieldsVisible :FieldBase<any>[] =[];
            fields.forEach(element => {                    
                if (element.viewStyle._renderstyle == "freetext"){
                    let newfield:FieldBase <any>;
                    let rule = new Rule();
                     newfield = new TextboxField({
                            label: element.title.__cdata,
                            key:element._id,
                            value: element.value,
                            required: true,
                            order:element._ordinal,
                            rules: element.visible.rule != undefined ?  element.visible.rule: rule,
                            visible: element._defaultVisibility,
                            group : element._group,
                            description: element.description.__cdata
                        });
                            
                        fieldsVisible.push(newfield);
                }  
                else if (element.viewStyle._renderstyle == "dropdown" ||element.viewStyle._renderstyle == "combobox"){//to choose one of these in xml
                    let newfield:DropdownField;
                    let rule = new Rule();
                     newfield = new DropdownField({
                            label: element.title.__cdata,
                            key:element._id,
                            value: element.value,
                            required: true,
                            order:element._ordinal,
                            rules: element.visible.rule != undefined ?  element.visible.rule: rule,
                            visible: element._defaultVisibility,
                            description: element.description.__cdata,
                            group : element._group                      
                        });
                        fieldsVisible.push(newfield);
                }
                else if (element.viewStyle._renderstyle == "checkbox"||element.viewStyle._renderstyle == "checkBox"){
                    let newfield:CheckBoxField;
                    let rule = new Array<Rule>();
                     newfield = new CheckBoxField({
                            label: element.title.__cdata,
                            key:element._id,
                            value: true,
                            required: true,
                            order:element._ordinal,
                            rules: element.visible.rule != undefined ?  element.visible.rule: rule,
                            visible: element._defaultVisibility,
                            group : element._group, 
                            description: element.description.__cdata,
                            type: "checkbox"                     
                        });
                        fieldsVisible.push(newfield);
                } 
                else if (element.viewStyle._renderstyle == "booleanDesicion"){
                    let newfield:RadioBoxField;
                    let rule = new Array<Rule>();
                     newfield = new RadioBoxField({
                            label: element.title.__cdata,
                            key:element._id,
                            value: true,
                            required: true,
                            order:element._ordinal,
                            rules: element.visible.rule != undefined ?  element.visible.rule: rule,
                            visible: element._defaultVisibility,
                            group : element._group, 
                            type: "radio",
                            description: element.description.__cdata,
                            answers: [
                                {
                                    id: 1,
                                    answer: "Yes",
                                    value: true
                                },
                                {
                                    id: 2,
                                    answer: "No",
                                    value:false
                                }]                  
                        });
                        fieldsVisible.push(newfield);
                }                
            });
            fieldsVisible.sort((a, b) => a.order - b.order);
            return  fieldsVisible;
    }

    private getGroups(fieldGroups:any, fields:any[]){
        let groups :GroupBase<any>[] =[];        
        
        if(fieldGroups.length>1){
            fieldGroups.forEach(fieldGroup =>{   // each fiedgroup fills with its fields from json  
                let  newfldGroup = new GroupBase(); 
                newfldGroup.groupFields = new Array();   
                fields.forEach(field => {
                    if(fieldGroup._id == field.group){
                        newfldGroup.groupFields.push(field);
                    }else{
                        //this.dataModel.fields.push(field);
                    }
                        
                });
                newfldGroup.title = fieldGroup.title.__cdata;
                newfldGroup.key = fieldGroup._id;
                newfldGroup.section = fieldGroup._section;
                groups.push(newfldGroup)
                });
        }
            
        else{
            let  newfldGroup = new GroupBase(); 
            newfldGroup.groupFields = new Array();
            fields.forEach(field => {       //for one fieldgroup, because xml to json transformation doesn't create array of one fieldfroup                      
                if(fieldGroups._id == field.group){
                    newfldGroup.groupFields.push(field);
                }else
                this.dataModel.fields.push(field);
            });
            newfldGroup.title = fieldGroups.title.__cdata;
            newfldGroup.key = fieldGroups._id;
            newfldGroup.section = fieldGroups._section;
            groups.push(newfldGroup)
        }
        return groups;
    }
  

     private getDummyGroups(){
      
       let groups :GroupBase<any>[] =[];
      
      
       let group: GroupBase<any>;
       group = new GroupBase<any>({
         key: "adfgadfsg",
         title: "GroupA",
         rules: new Array(),
         groupFields: new Array(),
         value: "value",
         visible: true,
         order: 1
         //,
         //controlType: "none"
       });
      
      
       let newfield1:FieldBase <any>;
       newfield1 = new TextboxField({
               key:"tf1-455",
               label: "Field from group1",
               value: 'this is a groupfield',
               required: true,
               ordinal:1
           });
       group.groupFields.push(newfield1);
      
       let newfield2:FieldBase <any>;
       newfield2 = new TextboxField({
               key:"tf1-443",
               label: "Another field from group1",
               value: 'this is a groupfield',
               required: true,
               ordinal:2
           });
       group.groupFields.push(newfield2);
      
       groups.push(group);
      

       return groups;
      
     }
    
    private getFieldsAttributes(attributes:any, fields:any[]){        
        let attribute:Attribute[]=[];
        attributes.forEach(attr => {
            let newAttribute = new Attribute();
            newAttribute.datatype = attr._datatype;
            newAttribute.defaultValue = attr.defaultValue._value;
            newAttribute.id = attr._id;
            newAttribute.multiplicityMax = attr.multiplicity._max;
            newAttribute.multiplicityMin = attr.multiplicity._min;
            newAttribute.ordinal = attr._ordinal;
            newAttribute.sources = new Array();
            newAttribute.sources.push(attr.sources.source);

            newAttribute.sources.forEach(src => {
                src.params=new Array();
                for (var i=0, len=attr.sources.source.value.length; i<len; i++){
                    let prm = new Param();
                    prm.key= attr.sources.source.value[i]._value;
                    prm.value= attr.sources.source.value[i]._label;
                    src.params.push(prm);
                }
                   
            });
            newAttribute.validation = attr.validation;

            console.log(newAttribute);
            attribute.push(newAttribute);
            fields.find(x => x.key == newAttribute.id).attributes.sources = newAttribute.sources;
        });


        return attribute;
    }

    private getSections(sections:any, fieldGroups:GroupBase<any>[]){
        let sects: Section[]= [];

        if(sections.length){
            sections.forEach(section => {
                let newSection = new Section();
                newSection.defaultVisibility = section.defaultVisibility;
                newSection.description = section.description;
                newSection.id = section._id;
                newSection.title = section.title;
                newSection.ordinal = section._ordinal;
                newSection.groupFields = new Array();
                fieldGroups.forEach(fldgroup => {
                    if(fldgroup.section == newSection.id)
                        newSection.groupFields.push(fldgroup);
                })
                sects.push(newSection);
            });
        }
        sects.sort((a, b) => a.ordinal - b.ordinal);
        return sects;
    }
  
}