import { Component, inject, Input, model, OnInit, signal } from '@angular/core';
import Redemption from '../../shared/models/redemption';
import { MatButtonModule } from '@angular/material/button';
import { MatCardModule } from '@angular/material/card';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatIconModule } from '@angular/material/icon';
import { MatInputModule } from '@angular/material/input';
import { ActionDropdownComponent } from '../../actions/action-dropdown/action-dropdown.component';
import { TwitchRedemptionDropdownComponent } from '../twitch-redemption-dropdown/twitch-redemption-dropdown.component';
import { FormControl, FormGroup, ReactiveFormsModule, Validators } from '@angular/forms';
import { HermesClientService } from '../../hermes-client.service';
import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
import TwitchRedemption from '../../shared/models/twitch-redemption';
import RedeemableAction from '../../shared/models/redeemable_action';
import { integerValidator } from '../../shared/validators/integer';
import { createTypeValidator } from '../../shared/validators/of-type';
import { RedemptionService } from '../../shared/services/redemption.service';
import { Subscription } from 'rxjs';

@Component({
  selector: 'redemption-item-edit',
  imports: [
    ActionDropdownComponent,
    MatButtonModule,
    MatCardModule,
    MatFormFieldModule,
    MatIconModule,
    MatInputModule,
    ReactiveFormsModule,
    TwitchRedemptionDropdownComponent,
  ],
  templateUrl: './redemption-item-edit.component.html',
  styleUrl: './redemption-item-edit.component.scss'
})
export class RedemptionItemEditComponent implements OnInit {
  readonly client = inject(HermesClientService);
  readonly redemptionService = inject(RedemptionService);
  readonly dialogRef = inject(MatDialogRef<RedemptionItemEditComponent>);
  readonly data = inject<{ redemption: Redemption, twitchRedemptions: TwitchRedemption[], redeemableActions: RedeemableAction[] }>(MAT_DIALOG_DATA);

  redemptionFormControl = new FormControl<TwitchRedemption | string | undefined>(undefined, [Validators.required, createTypeValidator('Object')]);
  redemptionErrorMessages: { [errorKey: string]: string } = {
    'required': 'This field is required.',
    'invalidType': 'Select a value from the dropdown.',
  };

  actionFormControl = new FormControl<RedeemableAction | string | undefined>(undefined, [Validators.required, createTypeValidator('Object')]);
  actionErrorMessages: { [errorKey: string]: string } = {
    'required': 'This field is required.',
    'invalidType': 'Select a value from the dropdown.',
  };

  orderFormControl = new FormControl(0, [Validators.required, Validators.min(0), Validators.max(99), integerValidator]);
  orderErrorMessages: { [errorKey: string]: string } = {
    'required': 'This field is required.',
    'min': 'The value must be at least 0.',
    'max': 'The value must be at most 99.',
    'integer': 'The value must be a whole number.',
  };
  orderErrorMessageKeys: string[] = [];

  formGroups = new FormGroup({
    twitchRedemption: this.redemptionFormControl,
    redeemableAction: this.actionFormControl,
    order: this.orderFormControl,
  });

  redemption: Redemption = { id: '', user_id: '', redemption_id: '', action_name: '', order: 0, state: true };
  twitchRedemptions: TwitchRedemption[] = [];
  redeemableActions: RedeemableAction[] = [];
  waitForResponse = false;
  responseError: string | undefined = undefined;

  ngOnInit(): void {
    this.redemption = this.data.redemption;
    this.orderFormControl.setValue(this.redemption.order);
    this.twitchRedemptions = this.data.twitchRedemptions;
    this.redeemableActions = this.data.redeemableActions;
    this.orderErrorMessageKeys = Object.keys(this.orderErrorMessages);
  }


  delete() {
    const id = this.redemption.id;
    this.waitForResponse = true
    this.client.first((d: any) => d.op == 4 && d.d.request.type == 'delete_redemption' && d.d.request.data.id == id)
      ?.subscribe({
        next: (d) => {
          if (d.d.error) {
            this.responseError = d.d.error;
            return;
          }

          this.dialogRef.close(id);
        },
        error: () => { this.responseError = 'Failed to receive response back from server.'; this.waitForResponse = false; },
        complete: () => this.waitForResponse = false,
      });
    this.client.deleteRedemption(id);
  }

  save() {
    this.responseError = undefined;
    const order = this.orderFormControl.value;
    if (order == null) {
      this.responseError = 'Order must be an integer.';
      return;
    }

    this.waitForResponse = true;
    const isNew = !this.redemption.id;
    if (isNew) {
      this.client.first((d: any) => d.op == 4 && d.d.request.type == 'create_redemption' && d.d.request.data.action == (this.redemption.action_name ?? '') && d.d.request.data.redemption == (this.redemption.redemption_id ?? ''))
        ?.subscribe({
          next: (d) => {
            if (d.d.error) {
              this.responseError = d.d.error;
              return;
            }

            this.redemption.order = order;
            this.dialogRef.close(d.d.data);
          },
          error: () => { this.responseError = 'Failed to receive response back from server.'; this.waitForResponse = false; },
          complete: () => this.waitForResponse = false,
        });
      this.client.createRedemption(this.redemption.redemption_id, this.redemption.action_name, order);
    } else {
      this.client.first((d: any) => d.op == 4 && d.d.request.type == 'update_redemption' && d.d.data.id == this.redemption.id)
        ?.subscribe({
          next: (d) => {
            if (d.d.error) {
              this.responseError = d.d.error;
              return;
            }
            this.redemption.order = order;
            this.dialogRef.close(d.d.data);
          },
          error: () => { this.responseError = 'Failed to receive response back from server.'; this.waitForResponse = false; },
          complete: () => this.waitForResponse = false,
        });
      this.client.updateRedemption(this.redemption.id, this.redemption.redemption_id, this.redemption.action_name, order);
    }
  }
}