import {Component, Input, OnInit, ViewChild} from '@angular/core';
import {ApiService, ResourceNotAvailableOfflineError} from '../../../service/api.service';
import {AlertController, LoadingController, ModalController} from '@ionic/angular';
import {ColumnsComponent} from './columns/columns.component';
import {AgGridAngular} from 'ag-grid-angular';
import {NumericEditorComponent} from './editors/numeric/numeric-editor.component';
import {ParagraphEditorComponent} from './editors/paragraph/paragraph-editor.component';
import {BooleanEditorComponent} from './editors/boolean/boolean-editor.component';
import {SelectEditorComponent} from './editors/select/select-editor.component';
import {MultiSelectEditorComponent} from './editors/select/multiselect-editor.component';
import {DatetimeEditorComponent} from './editors/datetime/datetime-editor.component';
import {DatetimeRendererComponent} from './renderers/datetime-renderer.component';
import {CurrencyRendererComponent} from './renderers/currency-renderer.component';
import {BooleanRendererComponent} from './renderers/boolean-renderer.component';
import {EditorNodeContract} from '../../nodes/EditorNode.contract';
import {EditorService} from '../../../service/editor.service';

@Component({
  selector: 'editor-database',
  templateUrl: './database.component.html',
  styleUrls: ['./database.component.scss'],
})
export class DatabaseComponent extends EditorNodeContract implements OnInit {
  @Input() nodeId: string;
  @Input() editorUUID?: string;
  @ViewChild('agGridElement') agGridElement: AgGridAngular;

  public dbRecord: any;
  public pendingSetup = true;
  public dirty = false;
  public lastClickRow = -1;
  public dbName = '';
  public notAvailableOffline = false;
  protected dbId!: string;

  title = 'app';
  columnDefs = [];
  rowData = [];

  public isDark() {
    return document.body.classList.contains('dark');
  }

  public get readonly() {
    return !this.node || !this.editorService.canEdit();
  }

  constructor(
      protected api: ApiService,
      protected modals: ModalController,
      protected alerts: AlertController,
      protected loader: LoadingController,
      public editorService: EditorService,
  ) { super(); }

  public isDirty(): boolean | Promise<boolean> {
    return this.dirty;
  }

  public needsSave(): boolean | Promise<boolean> {
    return this.dirty;
  }

  public needsLoad(): boolean | Promise<boolean> {
    return this.node && this.pendingSetup;
  }

  public writeChangesToNode(): void | Promise<void> {
    this.node.Value.Mode = 'database';
  }

  ngOnInit() {
    this.editorService = this.editorService.getEditor(this.editorUUID);
    this.editorService.registerNodeEditor(this.nodeId, this).then(() => {
      console.log('database editor', this);
    });
  }

  onCellValueChanged() {
    this.dirty = true;
    this.editorService.triggerSave();
  }

  async onManageColumns() {
    if ( this.readonly ) {
      return;
    }

    const modal = await this.modals.create({
      component: ColumnsComponent,
      componentProps: {columnSets: this.columnDefs},
    });

    modal.onDidDismiss().then(result => {
      this.setColumns(result.data);
    });

    await modal.present();
  }

  onInsertRow() {
    if ( this.readonly ) {
      return;
    }

    this.rowData.push({});
    this.agGridElement.api.setRowData(this.rowData);
    this.dirty = true;
    this.editorService.triggerSave();
  }

  async onRemoveRow() {
    if ( this.readonly ) {
      return;
    }

    const alert = await this.alerts.create({
      header: 'Are you sure?',
      message: `You are about to delete row ${this.lastClickRow + 1}. This cannot be undone.`,
      buttons: [
        {
          text: 'Keep It',
          role: 'cancel',
        },
        {
          text: 'Delete It',
          handler: () => {
            this.rowData = this.rowData.filter((x, i) => {
              return i !== this.lastClickRow;
            });
            this.agGridElement.api.setRowData(this.rowData);
            this.lastClickRow = -1;
            this.dirty = true;
            this.editorService.triggerSave();
          },
        }
      ],
    });

    await alert.present();
  }


  onRowClicked($event) {
    this.lastClickRow = $event.rowIndex;
  }

  setColumns(data) {
    this.columnDefs = data.map(x => {
      x.editable = !this.readonly;

      // Set editors and renderers for different types
      if ( x.Type === 'text' ) {
        x.editor = 'agTextCellEditor';
      } else if ( x.Type === 'number' ) {
        x.cellEditorFramework = NumericEditorComponent;
      } else if ( x.Type === 'paragraph' ) {
        x.cellEditorFramework = ParagraphEditorComponent;
      } else if ( x.Type === 'boolean' ) {
        x.cellRendererFramework = BooleanRendererComponent;
        x.cellEditorFramework = BooleanEditorComponent;
      } else if ( x.Type === 'select' ) {
        x.cellEditorFramework = SelectEditorComponent;
      } else if ( x.Type === 'multiselect' ) {
        x.cellEditorFramework = MultiSelectEditorComponent;
      } else if ( x.Type === 'datetime' ) {
        x.cellEditorFramework = DatetimeEditorComponent;
        x.cellRendererFramework = DatetimeRendererComponent;
      } else if ( x.Type === 'currency' ) {
        x.cellEditorFramework = NumericEditorComponent;
        x.cellRendererFramework = CurrencyRendererComponent;
      } else if ( x.Type === 'index' ) {
        x.editable = false;
      }

      return x;
    });

    this.agGridElement.api.setColumnDefs(this.columnDefs);
    this.dirty = true;
    this.editorService.triggerSave();
  }

  public async performLoad(): Promise<void> {
    if ( !this.node.Value ) {
      this.node.Value = {};
    }

    // Load the database record itself
    if ( !this.node.Value.Value && this.editorService.canEdit() ) {
      this.dbRecord = await this.api.createDatabase(this.page.UUID, this.node.UUID);
      this.dbName = this.dbRecord.Name;
      this.node.Value.Mode = 'database';
      this.node.Value.Value = this.dbRecord.UUID;
      this.node.value = this.dbRecord.UUID;
    } else {
      try {
        this.dbRecord = await this.api.getDatabase(this.page.UUID, this.node.UUID, this.node.Value.Value);
        this.dbName = this.dbRecord.Name;
        this.notAvailableOffline = false;
      } catch (e: unknown) {
        if ( e instanceof ResourceNotAvailableOfflineError ) {
          this.notAvailableOffline = true;
        } else {
          throw e;
        }
      }
    }

    // Load the columns
    const columns = await this.api.getDatabaseColumns(this.page.UUID, this.node.UUID, this.node.Value.Value);
    this.setColumns(columns);

    const rows = await this.api.getDatabaseEntries(this.page.UUID, this.node.UUID, this.node.Value.Value);
    this.rowData = rows.map(x => x.RowData);
    this.agGridElement.api.setRowData(this.rowData);

    this.pendingSetup = false;
    this.dirty = false;
  }

  public async performDelete(): Promise<void> {
    await this.api.deleteDatabase(this.page.UUID, this.node.UUID, this.node.Value.Value);
  }

  public async performSave(): Promise<void> {
    // Save the columns first
    await this.api.saveDatabaseColumns(this.page.UUID, this.node.UUID, this.node.Value.Value, this.columnDefs);

    // Save the data
    const rows = await this.api.saveDatabaseEntries(this.page.UUID, this.node.UUID, this.node.Value.Value, this.rowData);
    this.rowData = rows.map(x => x.RowData);
    this.agGridElement.api.setRowData(this.rowData);

    // Save the name
    await this.api.saveDatabaseName(this.page.UUID, this.node.UUID, this.node.Value.Value, this.dbName);

    this.dirty = false;
  }
}