/**
 * Copyright since 2025 Mifos Initiative
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

import { CommonModule } from '@angular/common';
import { Component, OnInit, inject } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { Router, RouterModule } from '@angular/router';

import { ApiManagementService, ApiVendor } from '../api-management.service';

/** Every outside API service the CBS uses: vendor, its work, its APIs (IN / OUT) and whether it is switched on. */
@Component({
  selector: 'mifosx-api-vendors',
  standalone: true,
  imports: [
    CommonModule,
    FormsModule,
    RouterModule
  ],
  templateUrl: './api-vendors.component.html',
  styleUrls: ['../../credit-bureau/cic-shared.scss']
})
export class ApiVendorsComponent implements OnInit {
  private service = inject(ApiManagementService);
  private router = inject(Router);

  vendors: ApiVendor[] = [];
  summary: { callsToday: number; failedToday: number; perVendor: Record<number, { calls: number; failed: number }> } = {
    callsToday: 0,
    failedToday: 0,
    perVendor: {}
  };
  loading = false;
  error: string | null = null;
  info: string | null = null;

  adding = false;
  saving = false;
  form: { name: string; work: string; environment: ApiVendor['environment'] } = this.blankForm();

  ngOnInit(): void {
    this.load();
  }

  private blankForm() {
    return { name: '', work: '', environment: 'SIMULATOR' as ApiVendor['environment'] };
  }

  load(): void {
    this.loading = true;
    this.service.vendors().subscribe((v) => {
      this.vendors = v;
      this.loading = false;
    });
    this.service.summary().subscribe((s) => (this.summary = s));
  }

  count(v: ApiVendor, direction: 'IN' | 'OUT'): number {
    return v.apis.filter((a) => a.direction === direction).length;
  }

  get totalIn(): number {
    return this.vendors.reduce((s, v) => s + this.count(v, 'IN'), 0);
  }

  get totalOut(): number {
    return this.vendors.reduce((s, v) => s + this.count(v, 'OUT'), 0);
  }

  get activeVendors(): number {
    return this.vendors.filter((v) => v.active).length;
  }

  calls(v: ApiVendor): { calls: number; failed: number } {
    return this.summary.perVendor[v.id] ?? { calls: 0, failed: 0 };
  }

  toggle(v: ApiVendor, event: Event): void {
    const want = (event.target as HTMLInputElement).checked;
    (event.target as HTMLInputElement).checked = v.active;
    this.error = null;
    this.info = null;
    this.service.saveVendor(v.id, { active: want }).subscribe({
      next: (u) => {
        v.active = u.active;
        this.info = `${u.name} is now ${u.active ? 'active' : 'switched off'}.`;
      },
      error: (e) => (this.error = e?.error?.defaultUserMessage ?? 'Could not change the vendor.')
    });
  }

  startAdd(): void {
    this.adding = true;
    this.form = this.blankForm();
    this.error = null;
  }

  saveNew(): void {
    this.saving = true;
    this.error = null;
    this.service.addVendor(this.form).subscribe({
      next: (v) => {
        this.saving = false;
        this.adding = false;
        this.router.navigate([
          '/api-management/vendors',
          v.id
        ]);
      },
      error: (e) => {
        this.saving = false;
        this.error = e?.error?.defaultUserMessage ?? 'Could not add the vendor.';
      }
    });
  }
}