import cloneDeep from 'lodash/cloneDeep';
import strCompare from 'str-compare';
import {
  AfterContentChecked,
  Component,
  OnInit, TemplateRef,
  ViewChild
} from '@angular/core';
import {ActivatedRoute, Router} from '@angular/router';
import {AutocompleteService} from '../services/autocomplete.service';
import {ApiService} from '../services/api.service';
import {MaterialModel} from '../models/material.model';
import {SampleModel} from '../models/sample.model';
import {NgForm, Validators} from '@angular/forms';
import {ValidationService} from '../services/validation.service';
import {TemplateModel} from '../models/template.model';
import {MeasurementModel} from '../models/measurement.model';
import { ChartOptions } from 'chart.js';
import {animate, style, transition, trigger} from '@angular/animations';
import {Observable} from 'rxjs';
import {ModalService} from '@inst-iot/bosch-angular-ui-components';
import {UserModel} from '../models/user.model';


// TODO: only show condition (if not set) and measurements in edit sample dialog at first
// TODO: multiple samples for base data, extend multiple measurements, conditions

@Component({
  selector: 'app-sample',
  templateUrl: './sample.component.html',
  styleUrls: ['./sample.component.scss'],
  animations: [
    trigger(
      'inOut', [
        transition(':enter', [
          style({height: 0, opacity: 0}),
          animate('0.5s ease-out', style({height: '*', opacity: 1}))
        ]),
        transition(':leave', [
          style({height: '*', opacity: 1}),
          animate('0.5s ease-in', style({height: 0, opacity: 0}))
        ])
      ]
    )
  ]
})
export class SampleComponent implements OnInit, AfterContentChecked {

  @ViewChild('sampleForm') sampleForm: NgForm;

  new;  // true if new sample should be created
  newMaterial = false;  // true if new material should be created
  materials: MaterialModel[] = [];  // all materials
  ac: {[group: string]: string[]} = {  // autocomplete data
    supplier: [],
    group: [],
    materialName: []
  };
  conditionTemplates: TemplateModel[];  // all conditions
  condition: TemplateModel | null = null;  // selected condition
  materialTemplates: TemplateModel[];  // all material templates
  materialTemplate: TemplateModel | null = null;  // selected material template
  material = new MaterialModel();  // object of current selected material
  sample = new SampleModel();
  customFields: [string, string][];
  sampleReferences: [string, string, string][] = [['', '', '']];
  sampleReferenceFinds: {_id: string, number: string}[] = [];  // raw sample reference data from db
  currentSRIndex = 0;  // index of last entered sample reference
  availableCustomFields: string[] = [];
  sampleReferenceAutocomplete: string[][] = [[]];
  responseData: SampleModel;  // gets filled with response data after saving the sample
  measurementTemplates: TemplateModel[];
  loading = 0;  // number of currently loading instances
  checkFormAfterInit = false;
  modalText = {list: '', suggestion: ''};
  charts = [];  // chart data for spectra
  defaultDevice = '';
  readonly chartInit = [{
    data: [],
    label: 'Spectrum',
    showLine: true,
    fill: false,
    pointRadius: 0,
    borderColor: '#00a8b0',
    borderWidth: 2
  }];
  readonly chartOptions: ChartOptions = {
    scales: {
      xAxes: [{ticks: {min: 400, max: 4000, stepSize: 400, reverse: true}}],
      yAxes: [{ticks: {min: 0, max: 1}}]
    },
    responsive: true,
    tooltips: {enabled: false},
    hover: {mode: null},
    maintainAspectRatio: true,
    plugins: {datalabels: {display: false}}
  };

  constructor(
    private router: Router,
    private route: ActivatedRoute,
    private api: ApiService,
    private validation: ValidationService,
    public autocomplete: AutocompleteService,
    private modal: ModalService
  ) { }

  ngOnInit(): void {
    this.new = this.router.url === '/samples/new';
    this.loading = 7;
    this.api.get<MaterialModel[]>('/materials?status=all', (data: any) => {
      this.materials = data.map(e => new MaterialModel().deserialize(e));
      this.ac.materialName = data.map(e => e.name);
      this.loading--;
    });
    this.api.get<string[]>('/material/suppliers', (data: any) => {
      this.ac.supplier = data;
      this.loading--;
    });
    this.api.get<string[]>('/material/groups', (data: any) => {
      this.ac.mgroup = data;
      this.loading--;
    });
    this.api.get<TemplateModel[]>('/template/conditions', data => {
      this.conditionTemplates = data.map(e => new TemplateModel().deserialize(e));
      this.loading--;
    });
    this.api.get<TemplateModel[]>('/template/materials', data => {
      this.materialTemplates = data.map(e => new TemplateModel().deserialize(e));
      this.selectMaterialTemplate(this.materialTemplates[0]._id);
      this.loading--;
    });
    this.api.get<UserModel>('/user', data => {
      this.defaultDevice = data.device_name;
    });
    this.api.get<TemplateModel[]>('/template/measurements', data => {
      this.measurementTemplates = data.map(e => new TemplateModel().deserialize(e));
      if (!this.new) {
        this.loading++;
        this.api.get<SampleModel>('/sample/' + this.route.snapshot.paramMap.get('id'), sData => {
          this.sample.deserialize(sData);
          this.charts = [];
          const spectrumTemplate = this.measurementTemplates.find(e => e.name === 'spectrum')._id;
          let spectrumCounter = 0;
          this.sample.measurements.forEach((measurement, i) => {
            this.charts.push(cloneDeep(this.chartInit));
            if (measurement.measurement_template === spectrumTemplate) {
              setTimeout(() => {
                this.generateChart(measurement.values.dpt, i);
                console.log(this.charts);
              }, spectrumCounter * 20);
              spectrumCounter ++;
            }
          });
          this.material = sData.material;
          this.customFields = this.sample.notes.custom_fields && this.sample.notes.custom_fields !== {} ?
            Object.keys(this.sample.notes.custom_fields).map(e => [e, this.sample.notes.custom_fields[e]]) : [['', '']];
          if (this.sample.notes.sample_references.length) {
            this.sampleReferences = [];
            this.sampleReferenceAutocomplete = [];
            let loadCounter = this.sample.notes.sample_references.length;
            this.sample.notes.sample_references.forEach(reference => {
              this.api.get<SampleModel>('/sample/' + reference.sample_id, srData => {
                this.sampleReferences.push([srData.number, reference.relation, reference.sample_id]);
                this.sampleReferenceAutocomplete.push([srData.number]);
                if (!--loadCounter) {
                  this.sampleReferences.push(['', '', '']);
                  this.sampleReferenceAutocomplete.push([]);
                  console.log(this.sampleReferences);
                  console.log(this.sampleReferenceAutocomplete);
                }
              });
            });
          }
          if ('condition_template' in this.sample.condition) {
            this.selectCondition(this.sample.condition.condition_template);
          }
          console.log('data loaded');
          this.loading--;
          this.checkFormAfterInit = true;
        });
      }
      this.loading--;
    });
    this.api.get<TemplateModel[]>('/sample/notes/fields', data => {
      this.availableCustomFields = data.map(e => e.name);
      this.loading--;
    });
  }

  ngAfterContentChecked() {
    // attach validators to dynamic condition fields when all values are available and template was fully created
    if (this.condition && this.condition.hasOwnProperty('parameters') && this.condition.parameters.length > 0 &&
      this.condition.parameters[0].hasOwnProperty('range') && this.sampleForm && this.sampleForm.form.get('conditionParameter0')) {
      for (const i in this.condition.parameters) {
        if (this.condition.parameters[i]) {
          this.attachValidator('conditionParameter' + i, this.condition.parameters[i].range, true);
        }
      }
    }

    // attach validators to dynamic material fields when all values are available and template was fully created
    if (this.materialTemplate && this.materialTemplate.hasOwnProperty('parameters') && this.materialTemplate.parameters.length > 0 &&
      this.materialTemplate.parameters[0].hasOwnProperty('range') && this.sampleForm && this.sampleForm.form.get('materialParameter0')) {
      for (const i in this.materialTemplate.parameters) {
        if (this.materialTemplate.parameters[i]) {
          this.attachValidator('materialParameter' + i, this.materialTemplate.parameters[i].range, true);
        }
      }
    }

    if (this.sampleForm && this.sampleForm.form.get('measurementParameter0-0')) {
      this.sample.measurements.forEach((measurement, mIndex) => {
        const template = this.getMeasurementTemplate(measurement.measurement_template);
        for (const i in template.parameters) {
          if (template.parameters[i]) {
            this.attachValidator('measurementParameter' + mIndex + '-' + i, template.parameters[i].range, false);
          }
        }
      });
      if (this.checkFormAfterInit) {
        this.checkFormAfterInit = false;
        this.initialValidate();
      }
    }
  }

  initialValidate() {
    console.log('initVal');
    Object.keys(this.sampleForm.form.controls).forEach(field => {
      this.sampleForm.form.get(field).updateValueAndValidity();
    });
  }

  attachValidator(name: string, range: {[prop: string]: any}, required: boolean) {
    if (this.sampleForm.form.get(name)) {
      const validators = [];
      if (required) {
        validators.push(Validators.required);
      }
      if (range.hasOwnProperty('values')) {
        validators.push(this.validation.generate('stringOf', [range.values]));
      }
      else if (range.hasOwnProperty('min') && range.hasOwnProperty('max')) {
        validators.push(this.validation.generate('minMax', [range.min, range.max]));
      }
      else if (range.hasOwnProperty('min')) {
        validators.push(this.validation.generate('min', [range.min]));
      }
      else if (range.hasOwnProperty('max')) {
        validators.push(this.validation.generate('max', [range.max]));
      }
      this.sampleForm.form.get(name).setValidators(validators);
    }
  }

  saveSample() {
    new Promise<void>(resolve => {
      if (this.newMaterial) {  // save material first if new one exists
        this.api.post<MaterialModel>('/material/new', this.material.sendFormat(), data => {
          this.materials.push(data);  // add material to data
          this.material = data;
          this.sample.material_id = data._id;  // add new material id to sample data
          resolve();
        });
      }
      else {
        resolve();
      }
    }).then(() => {  // save sample
      this.sample.notes.custom_fields = {};
      this.customFields.forEach(element => {
        if (element[0] !== '') {
          this.sample.notes.custom_fields[element[0]] = element[1];
        }
      });
      this.sample.notes.sample_references = this.sampleReferences
        .filter(e => e[0] && e[1] && e[2])
        .map(e => ({sample_id: e[2], relation: e[1]}));
      new Promise<SampleModel>(resolve => {
        if (this.new) {
          this.api.post<SampleModel>('/sample/new', this.sample.sendFormat(), resolve);
        }
        else {
          this.api.put<SampleModel>('/sample/' + this.sample._id, this.sample.sendFormat(), resolve);
        }
      }).then( data => {
        this.responseData = new SampleModel().deserialize(data);
        this.material = this.materials.find(e => e._id === this.responseData.material_id);
        this.sample.measurements.forEach(measurement => {
          if (Object.keys(measurement.values).map(e => measurement.values[e]).join('') !== '') {
            Object.keys(measurement.values).forEach(key => {
              measurement.values[key] = measurement.values[key] === '' ? null : measurement.values[key];
            });
            if (measurement._id === null) {  // new measurement
              measurement.sample_id = data._id;
              this.api.post<MeasurementModel>('/measurement/new', measurement.sendFormat());
            }
            else {  // update measurement
              this.api.put<MeasurementModel>('/measurement/' + measurement._id,
                measurement.sendFormat(['sample_id', 'measurement_template']));
            }
          }
          else if (measurement._id !== null) {  // existing measurement was left empty to delete
            this.api.delete('/measurement/' + measurement._id);
          }
        });
      });
    });
  }

  findMaterial(name) {
    const res = this.materials.find(e => e.name === name);  // search for match
    if (res) {
      this.material = cloneDeep(res);
      this.sample.material_id = this.material._id;
    }
    else {
      if (this.sample.material_id !== null) {  // reset previous match
        this.material = new MaterialModel();
      }
      this.sample.material_id = null;
    }
    this.setNewMaterial();
  }

  preventDefault(event) {
    if (event.key && event.key === 'Enter' || event.type === 'dragover') {
      event.preventDefault();
    }
  }

  setNewMaterial(value = null) {
    if (value === null) {
      this.newMaterial = !this.sample.material_id;
    }
    else if (value || (!value && this.sample.material_id !== null )) {  // set to false only if material already exists
      this.newMaterial = value;
    }
    if (this.newMaterial) {
      this.sampleForm.form.get('materialname').setValidators([Validators.required]);
    }
    else {
      this.sampleForm.form.get('materialname')
        .setValidators([Validators.required, this.validation.generate('stringOf', [this.ac.materialName])]);
    }
    this.sampleForm.form.get('materialname').updateValueAndValidity();
  }

  selectCondition(id) {
    this.condition = this.conditionTemplates.find(e => e._id === id);
    console.log(this.condition);
    console.log(this.sample);
    if ('condition_template' in this.sample.condition) {
      this.sample.condition.condition_template = id;
    }
  }

  selectMaterialTemplate(id) {
    this.materialTemplate = this.materialTemplates.find(e => e._id === id);
    if ('material_template' in this.material.properties) {
      this.material.properties.material_template = id;
    }
  }

  getMeasurementTemplate(id): TemplateModel {
    return this.measurementTemplates && id ? this.measurementTemplates.find(e => e._id === id) : new TemplateModel();
  }

  addMeasurement() {
    this.sample.measurements.push(new MeasurementModel(this.measurementTemplates.filter(e => e.name === 'spectrum').reverse()[0]._id));
    this.sample.measurements[this.sample.measurements.length - 1].values.device = this.defaultDevice;
    this.charts.push(cloneDeep(this.chartInit));
  }

  removeMeasurement(index) {
    if (this.sample.measurements[index]._id !== null) {
      this.api.delete('/measurement/' + this.sample.measurements[index]._id);
    }
    this.sample.measurements.splice(index, 1);
    this.charts.splice(index, 1);
  }

  clearChart(index) {
    this.charts[index][0].data = [];
  }

  fileToArray(files, mIndex, parameter) {
    for (const i in files) {
      if (files.hasOwnProperty(i)) {
        const fileReader = new FileReader();
        fileReader.onload = () => {
          let index: number = mIndex;
          if (Number(i) > 0) {  // append further spectra
            this.addMeasurement();
            index = this.sample.measurements.length - 1;
          }
          this.sample.measurements[index].values[parameter] =
            fileReader.result.toString().split('\r\n').map(e => e.split(','));
          this.generateChart(this.sample.measurements[index].values[parameter], index);
        };
        fileReader.readAsText(files[i]);
      }
    }
  }

  generateChart(spectrum, index) {
    this.charts[index][0].data = spectrum.map(e => ({x: parseFloat(e[0]), y: parseFloat(e[1])}));
  }

  toggleCondition() {
    if (this.condition) {
      this.condition = null;
    }
    else {
      this.sample.condition = {condition_template: null};
      this.selectCondition(this.conditionTemplates[0]._id);
    }
  }

  checkTypo(list, modal: TemplateRef<any>) {
    if (this.ac[list].indexOf(this.material[list]) < 0) {  // entry is not in lise
      this.modalText.list = list;
      this.modalText.suggestion = this.ac[list]  // find possible entry from list
        .map(e => ({v: e, s: strCompare.sorensenDice(e, this.material[list])}))
        .sort((a, b) => b.s - a.s)[0].v;
      this.modal.open(modal).then(result => {
        if (result) {  // use suggestion
          this.material[list] = this.modalText.suggestion;
        }
      });
    }
  }

  checkSampleReference(value, index) {
    if (value) {
      this.sampleReferences[index][0] = value;
    }
    this.currentSRIndex = index;
    const fieldNo = this.sampleReferences.length;
    let filledFields = 0;
    this.sampleReferences.forEach(field => {
      if (field[0] !== '') {
        filledFields ++;
      }
    });
    // append new field
    if (filledFields === fieldNo) {
      this.sampleReferences.push(['', '', '']);
      this.sampleReferenceAutocomplete.push([]);
    }
    // remove if two end fields are empty
    if (fieldNo > 1 && this.sampleReferences[fieldNo - 1][0] === '' && this.sampleReferences[fieldNo - 2][0] === '') {
      this.sampleReferences.pop();
      this.sampleReferenceAutocomplete.pop();
    }
    this.sampleReferenceIdFind(value);
  }

  sampleReferenceList(value) {
    return new Observable(observer => {
      this.api.get<{_id: string, number: string}[]>(
        '/samples?status=all&page-size=25&sort=number-asc&fields[]=number&fields[]=_id&' +
        'filters[]=%7B%22mode%22%3A%22stringin%22%2C%22field%22%3A%22number%22%2C%22values%22%3A%5B%22' + value + '%22%5D%7D', data => {
        console.log(data);
        this.sampleReferenceAutocomplete[this.currentSRIndex] = data.map(e => e.number);
        this.sampleReferenceFinds = data;
        observer.next(data.map(e => e.number));
        observer.complete();
        this.sampleReferenceIdFind(value);
      });
    });
  }

  sampleReferenceIdFind(value) {
    const idFind = this.sampleReferenceFinds.find(e => e.number === value);
    if (idFind) {
      this.sampleReferences[this.currentSRIndex][2] = idFind._id;
    }
    else {
      this.sampleReferences[this.currentSRIndex][2] = '';
    }
  }

  sampleReferenceListBind() {
    return this.sampleReferenceList.bind(this);
  }

  uniqueCfValues(index) {  // returns all names until index for unique check
    return this.customFields ? this.customFields.slice(0, index).map(e => e[0]) : [];
  }
}



// 1. ngAfterViewInit wird ja jedes mal nach einem ngOnChanges aufgerufen, also zB wenn sich dein ngFor aufbaut. Du könntest also in der
//      Methode prüfen, ob die Daten schon da sind und dann dementsprechend handeln. Das wäre die Eleganteste Variante
// 2. Der state "dirty" soll eigentlich anzeigen, wenn ein Form-Field vom User geändert wurde; damit missbrauchst du es hier etwas
// 3. Die Dirty-Variante: Pack in deine ngFor ein {{ onFirstLoad(data) }} rein, das einfach ausgeführt wird. müsstest dann natürlich
//      abfangen, dass das nicht nach jedem view-cycle neu getriggert wird. Schön ist das nicht, aber besser als mit Timeouts^^