import { CommonModule } from '@angular/common';
import {
  Component,
  EventEmitter,
  Input,
  OnInit,
  Output,
  SimpleChanges,
} from '@angular/core';
import { FormControl, ReactiveFormsModule } from '@angular/forms';
import { GenericFormData, GenericFormModel } from './generic-form.model';
import { RouterLink } from '@angular/router';
import { faListOl, faPlus, faSpoon } from '@fortawesome/free-solid-svg-icons';
import { FontAwesomeModule } from '@fortawesome/angular-fontawesome';
import {
  Ingredient,
  IngredientWithId,
  Recipe,
  RecipeData,
} from '../../recipes/recipe.model';

@Component({
  selector: 'app-generic-form',
  standalone: true,
  imports: [CommonModule, ReactiveFormsModule, RouterLink, FontAwesomeModule],
  templateUrl: './generic-form.component.html',
  styleUrl: './generic-form.component.scss',
})
export class GenericFormComponent implements OnInit {
  @Input() formData!: GenericFormData;
  @Input() formType!:
    | 'registration'
    | 'login'
    | 'create recipe'
    | 'edit recipe';
  @Input() recipe: Recipe = {};
  @Input() ingredients: Ingredient[] = [];
  @Input() steps: string[] = [];
  @Input() units: string[] = [];

  @Output() formSubmit = new EventEmitter<GenericFormData>();
  @Output() addIngredient = new EventEmitter<Ingredient[]>();
  @Output() updateIngredients = new EventEmitter<Ingredient[]>();
  @Output() addStep = new EventEmitter<string>();
  @Output() updateSteps = new EventEmitter<string[]>();

  buttonText!: string;
  headingText!: string;
  formModel!: GenericFormModel;
  ingredientToEdit!: IngredientWithId | undefined;

  faBtn = faPlus;
  faSpoon = faSpoon;
  faList = faListOl;

  ngOnChanges(changes: SimpleChanges): void {
    if ('recipe' in changes && this.isRecipeEditForm()) {
      this.populateFormWithRecipeData();
    }
  }

  populateFormWithRecipeData(): void {
    this.formModel.form.patchValue({
      name: this.recipe.name,
      prepTime: this.recipe.prepTime,
      cookTime: this.recipe.cookTime,
      img: this.recipe.img,
      description: this.recipe.description,
    });
  }

  ngOnInit(): void {
    this.formModel = new GenericFormModel(this.formData);
    this.formModel.form.addControl('ingredients', new FormControl(''));

    this.headingText = this.isRegistrationForm()
      ? 'Sign Up for a Delicious Journey'
      : this.isLoginForm()
      ? "Let's Get Cooking"
      : this.isRecipeCreateForm()
      ? 'Design your recipe'
      : this.isRecipeEditForm()
      ? 'Redesign your recipe'
      : '';

    this.buttonText = this.isRegistrationForm()
      ? 'Sign Up'
      : this.isLoginForm()
      ? 'Sign In'
      : this.isRecipeCreateForm()
      ? 'Create'
      : this.isRecipeEditForm()
      ? 'Edit'
      : '';
  }

  isRegistrationForm(): boolean {
    return this.formType === 'registration';
  }

  isLoginForm(): boolean {
    return this.formType === 'login';
  }

  isRecipeEditForm(): boolean {
    return this.formType === 'edit recipe';
  }

  isRecipeCreateForm(): boolean {
    return this.formType === 'create recipe';
  }

  onAddIngredient(): void {
    const ingredientControl = this.formModel.form.get('ingredient');
    const quantityControl = this.formModel.form.get('quantity');
    const unitControl = this.formModel.form.get('unit');

    if (
      ingredientControl &&
      ingredientControl.value &&
      quantityControl &&
      quantityControl.value &&
      unitControl &&
      unitControl.value
    ) {
      const ingredient = {
        id: this.ingredientToEdit?.id,
        name: ingredientControl.value,
        ProductRecipe: {
          quantity: quantityControl.value,
          unit: unitControl.value,
        },
      };

      this.ingredients = this.ingredients.filter(
        (i) => i.name !== ingredient.name
      );

      this.addIngredient.emit([...this.ingredients, ingredient]);

      ingredientControl?.setValue('');
      quantityControl?.setValue('');
      unitControl?.setValue('');
    }
  }

  onEditIngredient(ingredient: Ingredient): void {
    const ingredientControl = this.formModel.form.get('ingredient');
    const quantityControl = this.formModel.form.get('quantity');
    const unitControl = this.formModel.form.get('unit');

    this.ingredientToEdit = this.ingredients.find((i) => {
      return i.name === ingredient.name;
    });

    this.ingredients = this.ingredients.filter(
      (i) => i.name !== ingredient.name
    );

    this.updateIngredients.emit([...this.ingredients]);

    ingredientControl?.setValue(ingredient.name);
    quantityControl?.setValue(ingredient.ProductRecipe.quantity);
    unitControl?.setValue(ingredient.ProductRecipe.unit);
  }

  onAddStep(): void {
    const stepsControl = this.formModel.form.get('steps');

    if (stepsControl && stepsControl.value) {
      this.addStep.emit(stepsControl.value);
      stepsControl.setValue('');
    }
  }

  onEditSteps(item: string): void {
    const stepsControl = this.formModel.form.get('steps');

    this.steps = this.steps.filter((i) => i !== item);
    this.updateSteps.emit([...this.steps]);

    stepsControl?.setValue(item);
  }

  onSubmit(): void {
    const formData = this.formModel.form.value;

    if (this.isRecipeEditForm()) {
      const updatedRecipe: Recipe = {
        name: formData.name,
        prepTime: formData.prepTime,
        cookTime: formData.cookTime,
        img: formData.img,
        ingredients: this.ingredients,
        steps: this.steps,
        description: formData.description,
      };

      this.formSubmit.emit(updatedRecipe);
    } else {
      this.formSubmit.emit(formData);
    }
  }
}