import { Component, Input, OnInit, AfterViewChecked, ViewChild } from '@angular/core';
import { FormGroup, Validators } from '@angular/forms';
import { NgForm } from '@angular/forms';
import { Router, ActivatedRoute, ParamMap } from '@angular/router';
import 'rxjs/add/operator/switchMap';

//import { FieldBase } from '../../app/form/fields/field-base';
import { FieldControlService } from '../../app/services/field-control.service';
import { ServerService } from '../../app/services/server.service';
import { dataModelBuilder } from '../../app/services/dataModelBuilder.service';
import { DataModel } from '../entities/DataModel';
import { GroupBase } from './dynamic-form-group/group-base';
import { PaginationService } from '../../app/services/pagination.service';
import { TokenService, TokenProvider } from '../services/token.service';

import './../../assets/xml2json.min.js';
declare var X2JS: any;

@Component({
  selector: 'dynamic-form',
  templateUrl: './dynamic-form.component.html',
  providers: [FieldControlService, ServerService, dataModelBuilder]
})
export class DynamicFormComponent implements OnInit {

  @Input() dataModel: DataModel = new DataModel();
  form: FormGroup;
  payLoad = '';
  @Input() dirtyValues: number = 0;
  // pagination object
  @Input() pagination: any = {};

  private fragment: string;
  xml2jsonOBJ: any;

  constructor(private qcs: FieldControlService, private serverService: ServerService, private dataModelService: dataModelBuilder, private router: Router,
    private route: ActivatedRoute, private pagerService: PaginationService, private tokenService : TokenService) {
    this.form = this.qcs.toFormGroup(new Array(), new Array());
    this.xml2jsonOBJ = new X2JS();
  }

  getSubForm(subformName) {
    return this.form.controls[subformName];
  }


  ngOnInit() {

    this.route.fragment.subscribe(fragment => { this.fragment = fragment; }); //navigate to certain section of the page

    console.log("DynamicFormComponent.ngOnInit() -- RUNNIGN");
    let id = this.route.snapshot.paramMap.get('id'); //get the project id


    this.serverService.getData().subscribe( 
      
      response => {

        console.log("response");
        console.log(response);
        
        const data = response;

        console.log("data.dataset--BEFORE")
        console.log(response.dataset.profile.definition)
        console.log(response.dataset.profile.ruleset.definition)
        console.log(response.dataset.profile.viewstyle.definition)


        //replace the xmls {model,view,rule} definitions with json -- https://github.com/abdmob/x2js library
        data.dataset.profile.definition = this.xml2jsonOBJ.xml_str2json(data.dataset.profile.definition);
        data.dataset.profile.ruleset.definition = this.xml2jsonOBJ.xml_str2json(data.dataset.profile.ruleset.definition);
        data.dataset.profile.viewstyle.definition = this.xml2jsonOBJ.xml_str2json(data.dataset.profile.viewstyle.definition);
        //can be converted back to xml (which shouldn't be needed) with   this.xml2jsonOBJ.json2xml_str    
        
        console.log("this.serverService.getFields");

        console.log("data.dataset")
        console.log(data.dataset.profile.definition)
        console.log(data.dataset.profile.ruleset.definition)
        console.log(data.dataset.profile.viewstyle.definition)

        
        this.dataModel = new DataModel();
        this.dataModel = this.dataModelService.getDataModel(data);

        this.form = this.qcs.toFormGroup(this.dataModel.fields, this.dataModel.groups);

        this.form.valueChanges.subscribe(data => {
          // console.log('Form changes', data);
          let dirtyValuesArray: Array<any> = [];
          let count = 0;
          let countDirtyValues = 0;
          Object.keys(this.form.controls).forEach((c) => {
            //count++;
            let currentControl = this.form.controls[c];
            if (currentControl.dirty)
              dirtyValuesArray.push(currentControl.value);

          });
          this.dataModel.groups.forEach(grp => {
            grp.groupFields.forEach((fld) => {
              if (fld.visible == true || fld.visible == "true")
                count++;
              if (fld.value != undefined && fld.value !=" ")
                countDirtyValues++;
            });
          });
          //console.log(count);
          // var percentage = Math.floor(dirtyValuesArray.length * 100 / count);
          var percentage = Math.floor(countDirtyValues * 100 / count);
          this.dirtyValues = percentage;
        })

        //this.form = this.qcs.toFormGroup(this.fields);

        console.log("SUMMARY: ======>");
        console.log(this.dataModel);
        console.log(this.form);

        this.route.paramMap //this is how i get the projects's id

        // initialize to page 1
        this.setPage(1);
 
      },
      err => {
        console.log("There was an error fetching the data from server");
        console.log(err);
      }
    );

  }

  ngAfterViewChecked(): void { //navigate to certain section of the page
    try {
      document.querySelector('#' + this.fragment).scrollIntoView();
    } catch (e) { }
  }

  onSubmit() {
    this.payLoad = JSON.stringify(this.form.value);
  }

  buildForm(): void {
    //this.form = this.qcs.toFormGroup(this.fields.     


    this.form.valueChanges
      .subscribe(data => this.onValueChanged(data));

    this.onValueChanged(); // (re)set validation messages now
  }

  setPage(page: number) {
    if (page < 1 || page > this.pagination.totalPages) {
        return;
    }

    // get pagination object from service
    this.pagination = this.pagerService.getPagination(this.dataModel.groups.length, page);

    // get current page of items
    this.dataModel.sections.forEach(section => {
      if(section.groupFields.length > 0){
        section.groupFields = this.dataModel.groups.slice(this.pagination.startIndex, this.pagination.endIndex + 1);
      }
    });
    //this.dataModel.groups = this.dataModel.groups.slice(this.pager.startIndex, this.pager.endIndex + 1);
}

signOut2() {debugger;
      var auth2 = gapi.auth2.getAuthInstance();
      auth2.signOut().then(function () {
        console.log('User signed out.');
        localStorage.removeItem('currentUser');              
      });
     this.tokenService.setToken(null); //kanonika prepei na mpei mesa sthn function.....
    }

  onValueChanged(data?: any) {
    debugger;
    if (!this.form) { return; }
    const form = this.form;

    for (const field in this.formErrors) {
      // clear previous error message (if any)
      this.formErrors[field] = '';
      const control = form.get(field);

      if (control && control.dirty && !control.valid) {
        const messages = this.validationMessages[field];
        for (const key in control.errors) {
          this.formErrors[field] += messages[key] + ' ';
        }
      }
    }
  }

  formErrors = {
    'name': '',
    'power': ''
  };

  validationMessages = {
    'name': {
      'required': 'Name is required.',
      'minlength': 'Name must be at least 4 characters long.',
      'maxlength': 'Name cannot be more than 24 characters long.',
      'forbiddenName': 'Someone named "Bob" cannot be a hero.'
    },
    'power': {
      'required': 'Power is required.'
    }
  };
}