import { Component, inject, ViewChild } from '@angular/core';
import { ReactiveFormsModule } from '@angular/forms';
import { AngularMaterialModule } from '../../shared/module/angular-material.module';
import { CommonModule } from '@angular/common';
import { StepperSelectionEvent } from '@angular/cdk/stepper';
import { ApplicationComponent } from "../application/application.component";
import { HolderComponent } from '../holder/holder.component';
import { GoodsComponent } from '../goods/goods.component';
import { TravelPlanComponent } from '../travel-plan/travel-plan.component';
import { ShippingComponent } from '../shipping/shipping.component';
import { UserPreferencesService } from '../../core/services/user-preference.service';
import { UserPreferences } from '../../core/models/user-preference';

@Component({
  selector: 'app-add-carnet',
  imports: [AngularMaterialModule, CommonModule, ReactiveFormsModule,
    ApplicationComponent, HolderComponent, GoodsComponent, TravelPlanComponent,
    ShippingComponent],
  templateUrl: './add-carnet.component.html',
  styleUrl: './add-carnet.component.scss'
})
export class AddCarnetComponent {
  currentStep = 0;
  isLinear = true;
  applicationType: 'new' | 'additional' | 'duplicate' | 'extend' | null = 'new';
  isEditMode = false;
  headerid: number = 0;
  applicationName: string = '';
  userPreferences: UserPreferences;
  missingSectionMessage: string = '';

  // Track completion of each step
  stepsCompleted = {
    applicationDetail: false,
    holderSelection: false,
    goodsSection: false,
    travelPlan: false,
    shipping: false
  };

  @ViewChild(HolderComponent, { static: false })
  private holderComponent!: HolderComponent;

  @ViewChild(ShippingComponent, { static: false })
  private shippingComponent!: ShippingComponent;

  constructor(userPrefenceService: UserPreferencesService) {
    this.userPreferences = userPrefenceService.getPreferences();
  }

  onStepChange(event: StepperSelectionEvent): void {
    this.currentStep = event.selectedIndex;
  }

  onApplicationDetailCreated(data: { headerid: number, applicationName: string }): void {
    this.headerid = data.headerid;
    this.applicationName = data.applicationName;
    this.stepsCompleted.applicationDetail = true;
    this.isLinear = false; // Disable linear mode after application detail is created
    
    this.holderComponent.refreshHolder();
  }

  onHolderSelectionSaved(completed: boolean): void {
    this.stepsCompleted.holderSelection = completed;
    this.isAllSectionsCompleted();
  }

  onHolderSelectionUpdated(updated: boolean): void {
    if (updated) {
      this.shippingComponent?.refreshShippingData();
    }
  }

  onGoodsSectionSaved(completed: boolean): void {
    this.stepsCompleted.goodsSection = completed;
    this.isAllSectionsCompleted();
  }

  onTravelPlanSaved(completed: boolean): void {
    this.stepsCompleted.travelPlan = completed;
    this.isAllSectionsCompleted();
  }

  onShippingSaved(completed: boolean): void {
    this.stepsCompleted.shipping = completed;
    this.isAllSectionsCompleted();
  }

  isAllSectionsCompleted(): void {
    let allSectionsCompleted = this.stepsCompleted.applicationDetail
      && this.stepsCompleted.holderSelection && this.stepsCompleted.goodsSection
      && this.stepsCompleted.shipping && this.stepsCompleted.travelPlan;

    if (allSectionsCompleted) {
      this.missingSectionMessage = '';
    }
    else {
      let message = 'Missing details in: ';

      if (!this.stepsCompleted.applicationDetail) {
        message += 'Application Name, ';
      }

      if (!this.stepsCompleted.holderSelection) {
        message += 'Holder Selection, ';
      }

      if (!this.stepsCompleted.goodsSection) {
        message += 'Goods Section, ';
      }

      if (!this.stepsCompleted.travelPlan) {
        message += 'Travel Plan, ';
      }

      if (!this.stepsCompleted.shipping) {
        message += 'Shipping & Payment, ';
      }

      // Remove trailing comma and space
      this.missingSectionMessage = message.replace(/, $/, '');
    }
  }
}