import { Component } from '@angular/core';
import {
  BackendService,
  ScrumTask,
  ScrumStatus,
  ScrumUser,
  ScrumCategory,
} from '../services/backend.service';
import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
import { TaskFormComponent } from '../task-form/task-form.component';
import { TableComponentBase } from '../services/table-component.base';
import { ActivatedRoute, ParamMap, Router } from '@angular/router';
import { getNumberForPriority } from '../services/sorting.service';

@Component({
  selector: 'app-userstory-table',
  templateUrl: './task-table.component.html',
  styleUrls: ['./task-table.component.css'],
})
export class TaskTableComponent extends TableComponentBase<ScrumTask> {
  public filterUserstoryId: number | null = null;
  public filterPriority: string | null = null;
  public highlightId: number;
  public status: ScrumStatus[] = [];
  public users: ScrumUser[] = [];
  public categories: ScrumCategory[] = [];

  public get filteredItems() {
    return this.items.filter(
      (task) =>
        (this.filterUserstoryId === null ||
          task.userstoryid === this.filterUserstoryId) &&
        (this.filterPriority === null || task.priority === this.filterPriority)
    );
  }

  constructor(
    private backendService: BackendService,
    private modalService: NgbModal,
    private route: ActivatedRoute,
    private router: Router
  ) {
    super();

    this.applyFilterParameters(route.snapshot.paramMap);
    route.paramMap.subscribe((map) => this.applyFilterParameters(map));

    backendService.getTasks().subscribe((response) => {
      if (response.status > 399) {
        alert('Fehler');
      } else {
        this.items.push(...response.body);
      }
    });
    backendService.getAllStatus().subscribe((response) => {
      if (response.status > 399) {
        alert('Fehler');
      } else {
        this.status.push(...response.body);
      }
    });
    backendService.getUsers().subscribe((response) => {
      if (response.status > 399) {
        alert('Fehler');
      } else {
        this.users.push(...response.body);
      }
    });
    backendService.getCategories().subscribe((response) => {
      if (response.status > 399) {
        alert('Fehler');
      } else {
        this.categories.push(...response.body);
      }
    });
  }

  private applyFilterParameters(params: ParamMap) {
    if (params.has('userstoryId')) {
      this.filterUserstoryId = parseInt(params.get('userstoryId'));
    } else {
      this.filterUserstoryId = null;
    }
    if (params.has('id')) {
      this.highlightId = parseInt(params.get('id'));
    }
  }

  public deleteTask(task: ScrumTask) {
    this.backendService.deleteTask(task).subscribe((response) => {
      if (response.status > 399) {
        alert('Fehler');
      }
    });
    const index = this.items.indexOf(task);
    if (index !== -1) {
      this.items.splice(index, 1);
    }
  }

  public openTaskForm(editTask?: ScrumTask) {
    const modalRef = this.modalService.open(TaskFormComponent, {
      backdrop: 'static',
      keyboard: true,
    });
    if (editTask === null) {
      modalRef.result.then((result) => {
        this.items.push(result);
      });
    }
    modalRef.componentInstance.task = editTask;
  }

  sortById() {
    this.doNumericSort('id', (task) => task.id);
  }

  sortByTitle() {
    this.doStringSort('title', (task) => task.title);
  }

  sortByPrio() {
    this.doNumericSort('priority', (task) =>
      getNumberForPriority(task.priority)
    );
  }

  sortByTasks() {
    this.doNumericSort('userstory', (task) => task.userstoryid);
  }

  sortByStatus() {
    this.doNumericSort('statusid', (task) => task.statusid);
  }
  sortByAssigned() {
    this.doNumericSort('assignedtoid', (task) => task.assignedtoid);
  }
  sortByCategory() {
    this.doNumericSort('categoryid', (task) => task.categoryid);
  }

  private findTaskById(id: number): ScrumTask {
    return this.items.find((t) => t.id === id);
  }

  getStatusTitleById(id) {
    var status = this.status.find((x) => x.id === id);
    if (!status) {
      return 'N/A';
    }
    return status.title;
  }

  getUserNameById(id) {
    var user = this.users.find((x) => x.id === id);
    if (!user) {
      return 'N/A';
    }
    return user.name;
  }

  getCategoryTitleById(id) {
    var category = this.categories.find((x) => x.id === id);
    if (!category) {
      return 'N/A';
    }
    return category.title;
  }
}