import {Component, Input, OnInit, ViewChild} from '@angular/core';
import {ApiService} 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;
  @ViewChild('agGridElement') agGridElement: AgGridAngular;

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

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

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

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

  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.registerNodeEditor(this.nodeId, this).then(() => {

    });
  }

  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() ) {
      await new Promise((res, rej) => {
        this.api.post(`/db/${this.page.UUID}/${this.node.UUID}/create`).subscribe({
          next: result => {
            this.dbRecord = result.data;
            this.dbName = result.data.Name;
            this.node.Value.Mode = 'database';
            this.node.Value.Value = result.data.UUID;
            this.node.value = result.data.UUID;
            res();
          },
          error: rej,
        });
      });
    } else {
      await new Promise((res, rej) => {
        this.api.get(`/db/${this.page.UUID}/${this.node.UUID}/get/${this.node.Value.Value}`).subscribe({
          next: result => {
            this.dbRecord = result.data;
            this.dbName = result.data.Name;
            res();
          },
          error: rej,
        });
      });
    }

    // Load the columns
    await new Promise((res, rej) => {
      this.api.get(`/db/${this.page.UUID}/${this.node.UUID}/get/${this.node.Value.Value}/columns`).subscribe({
        next: result => {
          this.setColumns(result.data);
          res();
        },
        error: rej,
      });
    });

    // Load the data
    await new Promise((res, rej) => {
      this.api.get(`/db/${this.page.UUID}/${this.node.UUID}/get/${this.node.Value.Value}/data`).subscribe({
        next: result => {
          this.rowData = result.data.map(x => x.RowData);
          this.agGridElement.api.setRowData(this.rowData);
          res();
        },
        error: rej,
      });
    });

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

  public performDelete(): void | Promise<void> {
    return new Promise((res, rej) => {
      this.api.post(`/db/${this.page.UUID}/${this.node.UUID}/drop/${this.node.Value.Value}`).subscribe({
        next: result => {
          res();
        },
        error: rej,
      });
    });
  }

  public async performSave(): Promise<void> {
    // Save the columns first
    await new Promise((res, rej) => {
      this.api.post(`/db/${this.page.UUID}/${this.node.UUID}/set/${this.node.Value.Value}/columns`, {columns: this.columnDefs}).subscribe({
        next: result => {
          res();
        },
        error: rej,
      });
    });

    // Save the data
    await new Promise((res, rej) => {
      this.api.post(`/db/${this.page.UUID}/${this.node.UUID}/set/${this.node.Value.Value}/data`, this.rowData).subscribe({
        next: result => {
          this.rowData = result.data.map(x => x.RowData);
          this.agGridElement.api.setRowData(this.rowData);
          res();
        },
        error: rej,
      });
    });

    // Save the name
    await new Promise((res, rej) => {
      this.api.post(`/db/${this.page.UUID}/${this.node.UUID}/set/${this.node.Value.Value}/name`, { Name: this.dbName }).subscribe({
        next: result => {
          res();
        },
        error: rej,
      });
    });

    this.dirty = false;
  }
}