import { Component, ChangeDetectionStrategy, signal } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { TextInputComponent } from '../../../../../ui-essentials/src/lib/components/forms/input';
import { TextareaComponent } from '../../../../../ui-essentials/src/lib/components/forms/input';
import { InputWrapperComponent } from '../../../../../ui-essentials/src/lib/components/forms/input';
import { faSearch, faEnvelope, faEdit } from '@fortawesome/free-solid-svg-icons';

@Component({
  selector: 'ui-input-demo',
  standalone: true,
  imports: [
    CommonModule,
    FormsModule,
    TextInputComponent,
    TextareaComponent,
    InputWrapperComponent
  ],
  changeDetection: ChangeDetectionStrategy.OnPush,
  template: `
    <div style="padding: 2rem;">
      <h2>Input Component Showcase</h2>
      
      <!-- Text Input Variants -->
      <section style="margin-bottom: 3rem;">
        <h3>Text Input Variants</h3>
        
        <!-- Outlined Variant -->
        <div style="margin-bottom: 2rem;">
          <h4>Outlined (Default)</h4>
          <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem;">
            <ui-text-input
              label="Small Outlined"
              placeholder="Enter text..."
              size="sm"
              variant="outlined"
              [(ngModel)]="textValues['outlined-sm']"
              (inputChange)="handleInputChange('outlined-sm', $event)"
            />
            <ui-text-input
              label="Medium Outlined"
              placeholder="Enter text..."
              size="md"
              variant="outlined"
              [(ngModel)]="textValues['outlined-md']"
              (inputChange)="handleInputChange('outlined-md', $event)"
            />
            <ui-text-input
              label="Large Outlined"
              placeholder="Enter text..."
              size="lg"
              variant="outlined"
              [(ngModel)]="textValues['outlined-lg']"
              (inputChange)="handleInputChange('outlined-lg', $event)"
            />
          </div>
        </div>

        <!-- Filled Variant -->
        <div style="margin-bottom: 2rem;">
          <h4>Filled</h4>
          <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem;">
            <ui-text-input
              label="Small Filled"
              placeholder="Enter text..."
              size="sm"
              variant="filled"
              [(ngModel)]="textValues['filled-sm']"
              (inputChange)="handleInputChange('filled-sm', $event)"
            />
            <ui-text-input
              label="Medium Filled"
              placeholder="Enter text..."
              size="md"
              variant="filled"
              [(ngModel)]="textValues['filled-md']"
              (inputChange)="handleInputChange('filled-md', $event)"
            />
            <ui-text-input
              label="Large Filled"
              placeholder="Enter text..."
              size="lg"
              variant="filled"
              [(ngModel)]="textValues['filled-lg']"
              (inputChange)="handleInputChange('filled-lg', $event)"
            />
          </div>
        </div>

        <!-- Underlined Variant -->
        <div style="margin-bottom: 2rem;">
          <h4>Underlined</h4>
          <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem;">
            <ui-text-input
              label="Small Underlined"
              placeholder="Enter text..."
              size="sm"
              variant="underlined"
              [(ngModel)]="textValues['underlined-sm']"
              (inputChange)="handleInputChange('underlined-sm', $event)"
            />
            <ui-text-input
              label="Medium Underlined"
              placeholder="Enter text..."
              size="md"
              variant="underlined"
              [(ngModel)]="textValues['underlined-md']"
              (inputChange)="handleInputChange('underlined-md', $event)"
            />
            <ui-text-input
              label="Large Underlined"
              placeholder="Enter text..."
              size="lg"
              variant="underlined"
              [(ngModel)]="textValues['underlined-lg']"
              (inputChange)="handleInputChange('underlined-lg', $event)"
            />
          </div>
        </div>
      </section>

      <!-- Input Types -->
      <section style="margin-bottom: 3rem;">
        <h3>Input Types</h3>
        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem;">
          <ui-text-input
            label="Email Input"
            placeholder="email@example.com"
            type="email"
            variant="outlined"
            [(ngModel)]="textValues['email']"
            (inputChange)="handleInputChange('email', $event)"
          />
          <ui-text-input
            label="Password Input"
            placeholder="Enter password"
            type="password"
            variant="outlined"
            [(ngModel)]="textValues['password']"
            (inputChange)="handleInputChange('password', $event)"
          />
          <ui-text-input
            label="Search Input"
            placeholder="Search..."
            type="search"
            variant="outlined"
            [(ngModel)]="textValues['search']"
            (inputChange)="handleInputChange('search', $event)"
          />
          <ui-text-input
            label="Number Input"
            placeholder="Enter number"
            type="number"
            variant="outlined"
            min="0"
            max="100"
            step="1"
            [(ngModel)]="textValues['number']"
            (inputChange)="handleInputChange('number', $event)"
          />
          <ui-text-input
            label="Tel Input"
            placeholder="+1 (555) 000-0000"
            type="tel"
            variant="outlined"
            [(ngModel)]="textValues['tel']"
            (inputChange)="handleInputChange('tel', $event)"
          />
          <ui-text-input
            label="URL Input"
            placeholder="https://example.com"
            type="url"
            variant="outlined"
            [(ngModel)]="textValues['url']"
            (inputChange)="handleInputChange('url', $event)"
          />
        </div>
      </section>

      <!-- Input States -->
      <section style="margin-bottom: 3rem;">
        <h3>Input States</h3>
        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem;">
          <ui-text-input
            label="Default State"
            placeholder="Enter text..."
            variant="outlined"
            state="default"
            helperText="This is helper text"
            [(ngModel)]="textValues['state-default']"
            (inputChange)="handleInputChange('state-default', $event)"
          />
          <ui-text-input
            label="Error State"
            placeholder="Enter text..."
            variant="outlined"
            state="error"
            errorMessage="This field has an error"
            [(ngModel)]="textValues['state-error']"
            (inputChange)="handleInputChange('state-error', $event)"
          />
          <ui-text-input
            label="Success State"
            placeholder="Enter text..."
            variant="outlined"
            state="success"
            helperText="Input is valid!"
            [(ngModel)]="textValues['state-success']"
            (inputChange)="handleInputChange('state-success', $event)"
          />
          <ui-text-input
            label="Warning State"
            placeholder="Enter text..."
            variant="outlined"
            state="warning"
            helperText="Please double-check this value"
            [(ngModel)]="textValues['state-warning']"
            (inputChange)="handleInputChange('state-warning', $event)"
          />
        </div>
      </section>

      <!-- Inputs with Icons and Features -->
      <section style="margin-bottom: 3rem;">
        <h3>Inputs with Icons and Features</h3>
        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem;">
          <ui-text-input
            label="Prefix Icon"
            placeholder="Search..."
            variant="outlined"
            [prefixIcon]="faSearch"
            [clearable]="true"
            [(ngModel)]="textValues['prefix-icon']"
            (inputChange)="handleInputChange('prefix-icon', $event)"
          />
          <ui-text-input
            label="Prefix Text"
            placeholder="0.00"
            variant="outlined"
            prefixText="$"
            [(ngModel)]="textValues['prefix-text']"
            (inputChange)="handleInputChange('prefix-text', $event)"
          />
          <ui-text-input
            label="Suffix Icon"
            placeholder="Enter email"
            variant="outlined"
            [suffixIcon]="faEnvelope"
            [(ngModel)]="textValues['suffix-icon']"
            (inputChange)="handleInputChange('suffix-icon', $event)"
          />
          <ui-text-input
            label="With Clear Button"
            placeholder="Type to see clear button"
            variant="outlined"
            [clearable]="true"
            [(ngModel)]="textValues['clearable']"
            (inputChange)="handleInputChange('clearable', $event)"
            (clear)="handleClear('clearable')"
          />
        </div>
      </section>

      <!-- Special States -->
      <section style="margin-bottom: 3rem;">
        <h3>Special States</h3>
        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem;">
          <ui-text-input
            label="Disabled Input"
            placeholder="This is disabled"
            variant="outlined"
            [disabled]="true"
            value="Disabled value"
          />
          <ui-text-input
            label="Readonly Input"
            placeholder="This is readonly"
            variant="outlined"
            [readonly]="true"
            value="Readonly value"
          />
          <ui-text-input
            label="Loading Input"
            placeholder="Loading..."
            variant="outlined"
            [loading]="isLoading()"
            [(ngModel)]="textValues['loading']"
            (inputChange)="handleInputChange('loading', $event)"
          />
          <ui-text-input
            label="Required Input"
            placeholder="This field is required"
            variant="outlined"
            [required]="true"
            helperText="Required field"
            [(ngModel)]="textValues['required']"
            (inputChange)="handleInputChange('required', $event)"
          />
        </div>
      </section>

      <!-- Character Limit -->
      <section style="margin-bottom: 3rem;">
        <h3>Character Limit</h3>
        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem;">
          <ui-text-input
            label="Tweet (280 chars)"
            placeholder="What's happening?"
            variant="outlined"
            [maxLength]="280"
            [showCharacterCount]="true"
            [(ngModel)]="textValues['tweet']"
            (inputChange)="handleInputChange('tweet', $event)"
          />
          <ui-text-input
            label="Short Bio (100 chars)"
            placeholder="Tell us about yourself"
            variant="filled"
            [maxLength]="100"
            [showCharacterCount]="true"
            [(ngModel)]="textValues['bio']"
            (inputChange)="handleInputChange('bio', $event)"
          />
        </div>
      </section>

      <!-- Textarea Variants -->
      <section style="margin-bottom: 3rem;">
        <h3>Textarea Variants</h3>
        
        <!-- Basic Textareas -->
        <div style="margin-bottom: 2rem;">
          <h4>Basic Textareas</h4>
          <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 1.5rem;">
            <ui-textarea
              label="Small Textarea"
              placeholder="Enter your message..."
              size="sm"
              variant="outlined"
              [rows]="3"
              [(ngModel)]="textValues['textarea-sm']"
              (textareaChange)="handleInputChange('textarea-sm', $event)"
            />
            <ui-textarea
              label="Medium Textarea"
              placeholder="Enter your message..."
              size="md"
              variant="outlined"
              [rows]="4"
              [(ngModel)]="textValues['textarea-md']"
              (textareaChange)="handleInputChange('textarea-md', $event)"
            />
            <ui-textarea
              label="Large Textarea"
              placeholder="Enter your message..."
              size="lg"
              variant="outlined"
              [rows]="5"
              [(ngModel)]="textValues['textarea-lg']"
              (textareaChange)="handleInputChange('textarea-lg', $event)"
            />
          </div>
        </div>

        <!-- Textarea Variants -->
        <div style="margin-bottom: 2rem;">
          <h4>Textarea Variants</h4>
          <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 1.5rem;">
            <ui-textarea
              label="Filled Textarea"
              placeholder="Enter your message..."
              variant="filled"
              [(ngModel)]="textValues['textarea-filled']"
              (textareaChange)="handleInputChange('textarea-filled', $event)"
            />
            <ui-textarea
              label="Underlined Textarea"
              placeholder="Enter your message..."
              variant="underlined"
              [(ngModel)]="textValues['textarea-underlined']"
              (textareaChange)="handleInputChange('textarea-underlined', $event)"
            />
          </div>
        </div>

        <!-- Textarea with Features -->
        <div style="margin-bottom: 2rem;">
          <h4>Textarea with Features</h4>
          <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 1.5rem;">
            <ui-textarea
              label="Auto-resize Textarea"
              placeholder="Type to see auto-resize in action..."
              variant="outlined"
              [autoResize]="true"
              [rows]="2"
              [(ngModel)]="textValues['textarea-auto']"
              (textareaChange)="handleInputChange('textarea-auto', $event)"
            />
            <ui-textarea
              label="Character Limited"
              placeholder="Maximum 500 characters..."
              variant="outlined"
              [maxLength]="500"
              [showCharacterCount]="true"
              [clearable]="true"
              [(ngModel)]="textValues['textarea-limited']"
              (textareaChange)="handleInputChange('textarea-limited', $event)"
              (clear)="handleClear('textarea-limited')"
            />
          </div>
        </div>

        <!-- Textarea States -->
        <div style="margin-bottom: 2rem;">
          <h4>Textarea States</h4>
          <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 1.5rem;">
            <ui-textarea
              label="Error Textarea"
              placeholder="This has an error..."
              variant="outlined"
              state="error"
              errorMessage="Please provide valid feedback"
              [(ngModel)]="textValues['textarea-error']"
              (textareaChange)="handleInputChange('textarea-error', $event)"
            />
            <ui-textarea
              label="Success Textarea"
              placeholder="This looks good..."
              variant="outlined"
              state="success"
              helperText="Thank you for your feedback!"
              [(ngModel)]="textValues['textarea-success']"
              (textareaChange)="handleInputChange('textarea-success', $event)"
            />
          </div>
        </div>
      </section>

      <!-- Input Wrapper -->
      <section style="margin-bottom: 3rem;">
        <h3>Input Wrapper (Dynamic)</h3>
        <div style="margin-bottom: 1rem;">
          <label>
            <input 
              type="checkbox" 
              [checked]="useTextarea()" 
              (change)="toggleInputMode()"
            />
            Switch to {{ useTextarea() ? 'Text Input' : 'Textarea' }}
          </label>
        </div>
        <div style="max-width: 500px;">
          <ui-input-wrapper
            [mode]="useTextarea() ? 'textarea' : 'input'"
            label="Dynamic Input"
            placeholder="This switches between input and textarea..."
            variant="outlined"
            [clearable]="true"
            [prefixIcon]="faEdit"
            helperText="Switch the checkbox above to change input type"
            [(ngModel)]="textValues['wrapper']"
            (inputChange)="handleInputChange('wrapper', $event)"
            (clear)="handleClear('wrapper')"
          />
        </div>
      </section>

      <!-- Usage Examples -->
      <section style="margin-bottom: 3rem;">
        <h3>Usage Examples</h3>
        <div style="background: #f8f9fa; padding: 1.5rem; border-radius: 8px; border-left: 4px solid #007bff;">
          <h4>Basic Text Input:</h4>
          <pre style="background: #fff; padding: 1rem; border-radius: 4px; overflow-x: auto;"><code>&lt;ui-text-input
  label="Email"
  placeholder="Enter your email"
  type="email"
  variant="outlined"
  size="md"
  [(ngModel)]="email"
  (inputChange)="handleEmailChange($event)"&gt;
&lt;/ui-text-input&gt;</code></pre>
          
          <h4>Text Input with Icons:</h4>
          <pre style="background: #fff; padding: 1rem; border-radius: 4px; overflow-x: auto;"><code>&lt;ui-text-input
  label="Search"
  placeholder="Search products..."
  type="search"
  variant="filled"
  [prefixIcon]="faSearch"
  [clearable]="true"
  [(ngModel)]="searchTerm"
  (inputChange)="handleSearch($event)"&gt;
&lt;/ui-text-input&gt;</code></pre>

          <h4>Textarea:</h4>
          <pre style="background: #fff; padding: 1rem; border-radius: 4px; overflow-x: auto;"><code>&lt;ui-textarea
  label="Message"
  placeholder="Enter your message..."
  variant="outlined"
  [rows]="4"
  [maxLength]="500"
  [showCharacterCount]="true"
  [(ngModel)]="message"
  (textareaChange)="handleMessageChange($event)"&gt;
&lt;/ui-textarea&gt;</code></pre>

          <h4>Input Wrapper:</h4>
          <pre style="background: #fff; padding: 1rem; border-radius: 4px; overflow-x: auto;"><code>&lt;ui-input-wrapper
  [mode]="inputMode"
  label="Dynamic Input"
  placeholder="Switches between input and textarea"
  variant="outlined"
  [prefixIcon]="faEdit"
  [(ngModel)]="content"
  (inputChange)="handleContentChange($event)"&gt;
&lt;/ui-input-wrapper&gt;</code></pre>
        </div>
      </section>

      <!-- Interactive Example -->
      <section style="margin-bottom: 3rem;">
        <h3>Interactive Actions</h3>
        <div style="display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem;">
          <button 
            type="button" 
            style="padding: 0.5rem 1rem; background: #007bff; color: white; border: none; border-radius: 4px; cursor: pointer;"
            (click)="toggleLoading()"
          >
            {{ isLoading() ? 'Stop Loading' : 'Start Loading' }}
          </button>
          <button 
            type="button" 
            style="padding: 0.5rem 1rem; background: #28a745; color: white; border: none; border-radius: 4px; cursor: pointer;"
            (click)="fillSampleData()"
          >
            Fill Sample Data
          </button>
          <button 
            type="button" 
            style="padding: 0.5rem 1rem; background: #dc3545; color: white; border: none; border-radius: 4px; cursor: pointer;"
            (click)="clearAllInputs()"
          >
            Clear All
          </button>
        </div>
        
        @if (lastChangedInput()) {
          <div style="margin-top: 1rem; padding: 1rem; background: #e3f2fd; border-radius: 4px;">
            <strong>Last changed:</strong> {{ lastChangedInput() }} = "{{ lastChangedValue() }}"
          </div>
        }
      </section>

      <!-- Values Display -->
      <section style="margin-bottom: 3rem;">
        <h3>Current Values</h3>
        <div style="background: #f8f9fa; padding: 1rem; border-radius: 4px; max-height: 300px; overflow-y: auto;">
          <pre>{{ getValuesAsJson() }}</pre>
        </div>
      </section>
    </div>
  `,
  styles: [`
    h2 {
      color: hsl(279, 14%, 11%);
      font-size: 2rem;
      margin-bottom: 2rem;
      border-bottom: 2px solid hsl(258, 100%, 47%);
      padding-bottom: 0.5rem;
    }
    
    h3 {
      color: hsl(279, 14%, 25%);
      font-size: 1.5rem;
      margin-bottom: 1rem;
    }
    
    h4 {
      color: hsl(287, 12%, 35%);
      font-size: 1.125rem;
      margin-bottom: 0.75rem;
    }
    
    section {
      border: 1px solid hsl(289, 14%, 90%);
      border-radius: 8px;
      padding: 1.5rem;
      background: hsl(286, 20%, 99%);
    }
    
    pre {
      font-size: 0.875rem;
      line-height: 1.5;
      margin: 0.5rem 0;
    }
    
    code {
      font-family: 'JetBrains Mono', monospace;
      color: #d63384;
    }

    button {
      transition: all 0.2s ease-in-out;
    }

    button:hover {
      opacity: 0.9;
      transform: translateY(-1px);
    }

    label {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-weight: 500;
      cursor: pointer;
    }
  `]
})
export class InputDemoComponent {
  textValues: Record<string, string> = {};
  lastChangedInput = signal<string>('');
  lastChangedValue = signal<string>('');
  isLoading = signal<boolean>(false);
  useTextarea = signal<boolean>(false);

  // FontAwesome icons
  readonly faSearch = faSearch;
  readonly faEnvelope = faEnvelope;
  readonly faEdit = faEdit;

  handleInputChange(inputName: string, value: string): void {
    this.textValues[inputName] = value;
    this.lastChangedInput.set(inputName);
    this.lastChangedValue.set(value);
    console.log(`Input changed: ${inputName} = "${value}"`);
  }

  handleClear(inputName: string): void {
    this.textValues[inputName] = '';
    this.lastChangedInput.set(inputName);
    this.lastChangedValue.set('(cleared)');
    console.log(`Input cleared: ${inputName}`);
  }

  toggleLoading(): void {
    this.isLoading.set(!this.isLoading());
    console.log(`Loading state: ${this.isLoading() ? 'started' : 'stopped'}`);
  }

  toggleInputMode(): void {
    this.useTextarea.set(!this.useTextarea());
    console.log(`Input mode: ${this.useTextarea() ? 'textarea' : 'input'}`);
  }

  fillSampleData(): void {
    this.textValues = {
      'outlined-md': 'Sample outlined text',
      'email': 'user@example.com',
      'search': 'sample search query',
      'prefix-icon': 'search with icon',
      'textarea-md': 'This is a sample message\nin a textarea component\nwith multiple lines.',
      'wrapper': 'Dynamic wrapper content'
    };
    this.lastChangedInput.set('multiple');
    this.lastChangedValue.set('(sample data filled)');
    console.log('Sample data filled');
  }

  clearAllInputs(): void {
    this.textValues = {};
    this.lastChangedInput.set('all');
    this.lastChangedValue.set('(cleared)');
    console.log('All inputs cleared');
  }

  getValuesAsJson(): string {
    return JSON.stringify(this.textValues, null, 2);
  }
}