import React, { CSSProperties } from 'react';
import { useNode, UserComponent } from '@craftjs/core';
import { cssPropsToString } from '../../utils/style-helpers';

interface FormButtonProps {
  text?: string;
  style?: CSSProperties;
}

export const FormButton: UserComponent<FormButtonProps> = ({
  text = 'Submit',
  style = {},
}) => {
  const {
    connectors: { connect, drag },
    selected,
  } = useNode((node) => ({
    selected: node.events.selected,
  }));

  return (
    <button
      ref={(ref: HTMLButtonElement | null): void => { if (ref) connect(drag(ref)); }}
      type="submit"
      onClick={(e) => e.preventDefault()}
      style={{
        padding: '12px 32px',
        backgroundColor: '#3b82f6',
        color: '#ffffff',
        border: 'none',
        borderRadius: '6px',
        fontSize: '16px',
        fontWeight: '600',
        cursor: 'pointer',
        outline: selected ? '2px solid #3b82f6' : 'none',
        outlineOffset: selected ? '2px' : '0',
        ...style,
      }}
    >
      {text}
    </button>
  );
};

/* ---------- Settings panel ---------- */

const FormButtonSettings: React.FC = () => {
  const { actions: { setProp }, props } = useNode((node) => ({
    props: node.data.props as FormButtonProps,
  }));

  const colorPresets = [
    { bg: '#3b82f6', color: '#ffffff', label: 'Blue' },
    { bg: '#10b981', color: '#ffffff', label: 'Green' },
    { bg: '#ef4444', color: '#ffffff', label: 'Red' },
    { bg: '#f59e0b', color: '#18181b', label: 'Amber' },
    { bg: '#8b5cf6', color: '#ffffff', label: 'Purple' },
    { bg: '#18181b', color: '#ffffff', label: 'Dark' },
  ];

  const radiusPresets = ['0px', '4px', '6px', '8px', '9999px'];
  const widthPresets = ['auto', '100%'];

  return (
    <div style={{ padding: '12px', display: 'flex', flexDirection: 'column', gap: '14px' }}>
      <div>
        <label style={{ fontSize: 11, color: '#a1a1aa', display: 'block', marginBottom: 6 }}>Button Text</label>
        <input
          type="text"
          value={props.text || ''}
          onChange={(e) => setProp((p: FormButtonProps) => { p.text = e.target.value; })}
          style={{ width: '100%', padding: '4px 8px', background: '#27272a', color: '#e4e4e7', border: '1px solid #3f3f46', borderRadius: 4, fontSize: 12 }}
        />
      </div>

      <div>
        <label style={{ fontSize: 11, color: '#a1a1aa', display: 'block', marginBottom: 6 }}>Color</label>
        <div style={{ display: 'flex', gap: 4, flexWrap: 'wrap' }}>
          {colorPresets.map((preset) => (
            <button
              key={preset.label}
              onClick={() => setProp((p: FormButtonProps) => {
                p.style = { ...p.style, backgroundColor: preset.bg, color: preset.color };
              })}
              title={preset.label}
              style={{
                width: 24, height: 24, borderRadius: 4, border: '1px solid #3f3f46',
                backgroundColor: preset.bg, cursor: 'pointer',
                outline: props.style?.backgroundColor === preset.bg ? '2px solid #3b82f6' : 'none',
                outlineOffset: 1,
              }}
            />
          ))}
        </div>
      </div>

      <div>
        <label style={{ fontSize: 11, color: '#a1a1aa', display: 'block', marginBottom: 6 }}>Border Radius</label>
        <div style={{ display: 'flex', gap: 4, flexWrap: 'wrap' }}>
          {radiusPresets.map((r) => (
            <button
              key={r}
              onClick={() => setProp((p: FormButtonProps) => { p.style = { ...p.style, borderRadius: r }; })}
              style={{
                padding: '2px 8px', fontSize: 11, borderRadius: 4, cursor: 'pointer',
                border: '1px solid #3f3f46',
                background: props.style?.borderRadius === r ? '#3b82f6' : '#27272a',
                color: '#e4e4e7',
              }}
            >
              {r}
            </button>
          ))}
        </div>
      </div>

      <div>
        <label style={{ fontSize: 11, color: '#a1a1aa', display: 'block', marginBottom: 6 }}>Width</label>
        <div style={{ display: 'flex', gap: 4 }}>
          {widthPresets.map((w) => (
            <button
              key={w}
              onClick={() => setProp((p: FormButtonProps) => { p.style = { ...p.style, width: w }; })}
              style={{
                padding: '4px 10px', fontSize: 11, borderRadius: 4, cursor: 'pointer',
                border: '1px solid #3f3f46',
                background: props.style?.width === w ? '#3b82f6' : '#27272a',
                color: '#e4e4e7',
              }}
            >
              {w === 'auto' ? 'Auto' : 'Full Width'}
            </button>
          ))}
        </div>
      </div>
    </div>
  );
};

/* ---------- Craft config ---------- */

FormButton.craft = {
  displayName: 'Submit Button',
  props: {
    text: 'Submit',
    style: {
      backgroundColor: '#3b82f6',
      color: '#ffffff',
      padding: '12px 32px',
      borderRadius: '6px',
      fontWeight: '600',
      fontSize: '16px',
      border: 'none',
    },
  },
  rules: {
    canDrag: () => true,
    canMoveIn: () => false,
    canMoveOut: () => true,
  },
  related: {
    settings: FormButtonSettings,
  },
};

/* ---------- HTML export ---------- */

(FormButton as any).toHtml = (props: FormButtonProps, _childrenHtml: string) => {
  const styleStr = cssPropsToString({
    padding: '12px 32px',
    border: 'none',
    cursor: 'pointer',
    ...props.style,
  });
  const escapedText = (props.text || 'Submit').replace(/</g, '&lt;').replace(/>/g, '&gt;');
  return {
    html: `<button type="submit"${styleStr ? ` style="${styleStr}"` : ''}>${escapedText}</button>`,
  };
};
