import React, { useCallback, CSSProperties } from 'react';
import { useEditor } from '@craftjs/core';
import {
  BG_COLORS,
  RADIUS_PRESETS,
  SPACING_PRESETS,
  SHADOW_PRESETS,
} from '../../../constants/presets';
import {
  StylePanelProps,
  SectionLabel,
  ColorSwatchGrid,
  PresetButtonGrid,
  TextInputField,
  ColorPickerField,
  CollapsibleSection,
  SpacingControl,
  SpacingSide,
  BorderControl,
  BorderValue,
  buildBorderShorthand,
  AnimationControl,
  VisibilityControl,
  sectionGap,
  labelStyle,
  autoTextColor,
  useNodeProp,
} from './shared';

function capitalize(s: string): string {
  return s.charAt(0).toUpperCase() + s.slice(1);
}

/** Parses a `border` shorthand string (e.g. "2px solid #ff0000") back into
 *  the {width,style,color} shape BorderControl edits. Only needs to
 *  round-trip values this same panel produced via buildBorderShorthand. */
function parseBorderShorthand(v: string | undefined): BorderValue {
  if (!v || v === 'none') return { width: '', style: 'none', color: '#000000' };
  const m = String(v).trim().match(/^(\d+(?:\.\d+)?(?:px|em|rem)?)\s+(\w+)\s+(.+)$/);
  if (!m) return { width: '', style: 'none', color: '#000000' };
  return { width: m[1], style: m[2], color: m[3] };
}

/** style.opacity is a CSS-length-free numeric string ("0.8") or blank
 *  (treated as fully opaque). Converts to a 0-100 integer for the UI. */
function opacityPercent(v: unknown): number {
  if (v === undefined || v === null || v === '') return 100;
  const n = parseFloat(String(v));
  return Number.isFinite(n) ? Math.round(n * 100) : 100;
}

/* ---------- BUTTON ---------- */
export const ButtonStylePanel: React.FC<StylePanelProps> = ({ selectedId, nodeProps }) => {
  const { actions } = useEditor();
  const style: CSSProperties = nodeProps.style || {};

  const { setProp, setPropStyle } = useNodeProp(selectedId);

  const setButtonColor = useCallback(
    (bgColor: string) => {
      actions.setProp(selectedId, (props: any) => {
        props.style = {
          ...props.style,
          backgroundColor: bgColor,
          color: autoTextColor(bgColor),
        };
      });
    },
    [actions, selectedId],
  );

  return (
    <>
      <div className="guided-section">
        <SectionLabel>Button Color</SectionLabel>
        <ColorSwatchGrid
          colors={BG_COLORS}
          activeValue={style.backgroundColor as string}
          onSelect={setButtonColor}
        />
      </div>
      <TextInputField
        label="Button Text"
        value={nodeProps.text || ''}
        placeholder="Click Me"
        onChange={(v) => {
          actions.setProp(selectedId, (props: any) => { props.text = v; });
        }}
      />
      <TextInputField
        label="Link URL"
        value={nodeProps.href || ''}
        placeholder="https://..."
        onChange={(v) => {
          actions.setProp(selectedId, (props: any) => { props.href = v; });
        }}
      />
      <div className="guided-section">
        <label style={{ display: 'flex', alignItems: 'center', gap: 6, fontSize: 11, color: '#e4e4e7', cursor: 'pointer' }}>
          <input
            type="checkbox"
            checked={nodeProps.target === '_blank'}
            onChange={(e) => setProp('target', e.target.checked ? '_blank' : '_self')}
          />
          Open in new tab
        </label>
      </div>
      <div className="guided-section">
        <SectionLabel>Border Radius</SectionLabel>
        <PresetButtonGrid
          presets={RADIUS_PRESETS}
          activeValue={style.borderRadius as string}
          onSelect={(v) => setPropStyle('borderRadius', v)}
        />
      </div>
      <div className="guided-section">
        <SectionLabel>Padding</SectionLabel>
        <PresetButtonGrid
          presets={SPACING_PRESETS}
          activeValue={style.padding as string}
          onSelect={(v) => setPropStyle('padding', v)}
        />
      </div>

      {/* Hover state -- rendered into a scoped <style>...:hover{} block by
          ButtonLink.toHtml (published export only; not shown live in the
          editor canvas beyond the hover preview ButtonLink itself does). */}
      <CollapsibleSection title="Hover State" defaultOpen={false}>
        <ColorPickerField
          label="Hover Background"
          value={nodeProps.hoverBg || ''}
          onChange={(v) => setProp('hoverBg', v)}
        />
        <ColorPickerField
          label="Hover Text Color"
          value={nodeProps.hoverColor || ''}
          onChange={(v) => setProp('hoverColor', v)}
        />
      </CollapsibleSection>

      {/* Box model + border/effects + animation/visibility rollout */}
      <CollapsibleSection title="Spacing" defaultOpen={false}>
        <SpacingControl
          label="Margin"
          value={{ top: style.marginTop as string, right: style.marginRight as string, bottom: style.marginBottom as string, left: style.marginLeft as string }}
          onChange={(side: SpacingSide, v: string) => setPropStyle(`margin${capitalize(side)}`, v)}
        />
      </CollapsibleSection>
      <CollapsibleSection title="Border & Effects" defaultOpen={false}>
        <BorderControl
          value={parseBorderShorthand(style.border as string)}
          onChange={(v) => setPropStyle('border', buildBorderShorthand(v))}
        />
        <div className="guided-section">
          <SectionLabel>Shadow</SectionLabel>
          <PresetButtonGrid presets={SHADOW_PRESETS} activeValue={style.boxShadow as string} onSelect={(v) => setPropStyle('boxShadow', v)} />
        </div>
        <div style={sectionGap}>
          <label style={labelStyle}>Opacity: {opacityPercent(style.opacity)}%</label>
          <input
            type="range"
            min={0}
            max={100}
            value={opacityPercent(style.opacity)}
            onChange={(e) => setPropStyle('opacity', String(Number(e.target.value) / 100))}
            style={{ width: '100%' }}
          />
        </div>
      </CollapsibleSection>
      <CollapsibleSection title="Animation & Visibility" defaultOpen={false}>
        <AnimationControl
          value={{ animation: nodeProps.animation || 'none', animationDelay: nodeProps.animationDelay }}
          onChange={(v) => { setProp('animation', v.animation); setProp('animationDelay', v.animationDelay); }}
        />
        <VisibilityControl
          value={{
            hideOnDesktop: nodeProps.hideOnDesktop,
            hideOnTablet: nodeProps.hideOnTablet,
            hideOnMobile: nodeProps.hideOnMobile,
          }}
          onChange={(v) => {
            setProp('hideOnDesktop', !!v.hideOnDesktop);
            setProp('hideOnTablet', !!v.hideOnTablet);
            setProp('hideOnMobile', !!v.hideOnMobile);
          }}
        />
      </CollapsibleSection>
    </>
  );
};