import React, { ElementType, ReactNode, forwardRef } from 'react';

export type TextSize = 'xs' | 'sm' | 'md' | 'lg' | 'xl' | '2xl' | '3xl' | '4xl' | 'base';

export interface TextProps {
  children: ReactNode;
  variant?: 'high' | 'med' | 'low' | 'primary' | 'success' | 'warning' | 'critical' | 'telemetry' | 'inherit' | any;
  size?: TextSize | { base: TextSize; sm?: TextSize; md?: TextSize; lg?: TextSize; xl?: TextSize } | any;
  weight?: 'light' | 'normal' | 'medium' | 'semibold' | 'bold' | any;
  as?: ElementType;
  align?: 'left' | 'center' | 'right' | any;
  mono?: boolean;
  uppercase?: boolean;
  leading?: 'none' | 'tight' | 'snug' | 'normal' | 'relaxed' | 'loose' | any;
  block?: boolean;
  truncate?: boolean;
  className?: string;
  style?: React.CSSProperties;
  mt?: number | any;
  mb?: number | any;
  ml?: number | any;
  mr?: number | any;
  marginTop?: number | any;
  marginBottom?: number | any;
  font?: 'sans' | 'mono' | string;
  color?: string;
  letterSpacing?: string;
  lineHeight?: string | number;
  flexGrow?: number;
  flexShrink?: number;
  lineClamp?: number;
  display?: string;
  opacity?: number;
  maxWidth?: string | number;
  mx?: string | number;
  pl?: number;
  px?: number;
  py?: number;
  paddingX?: number;
  paddingY?: number;
  textAlign?: string;
  groupHoverTextColor?: string;
  transition?: boolean;
  borderLeft?: boolean;
  borderStyle?: string;
  borderColor?: string;
  ariaLabel?: string;
  hoverVariant?: string;
  fontSize?: string | any;
  italic?: boolean;
  animate?: string;
  capitalize?: boolean;
  alignItems?: string;
  gap?: number;
  cursor?: string;
  width?: string | number;
  htmlFor?: string;
  transform?: string;
}

/**
 * Text - Redesigned for "Modern Precision" theme.
 * Includes extensive compatibility props to prevent app-wide breakage.
 */
export const Text = forwardRef<HTMLElement, TextProps>(({ 
  children, 
  variant = 'med', 
  size = 'md',
  weight = 'normal',
  as = 'p',
  align = 'left',
  mono = false,
  uppercase = false,
  leading = 'normal',
  block = false,
  truncate = false,
  className,
  style,
  mt,
  mb,
  ml,
  mr,
  marginTop,
  marginBottom,
  font,
  color,
  letterSpacing,
  lineHeight,
  flexGrow,
  flexShrink,
  lineClamp,
  display,
  opacity,
  maxWidth,
  mx,
  pl,
  px,
  py,
  paddingX,
  paddingY,
  textAlign,
  groupHoverTextColor,
  transition,
  borderLeft,
  borderStyle,
  borderColor,
  ariaLabel,
  hoverVariant,
  fontSize,
  italic,
  animate,
  capitalize,
  alignItems,
  gap,
  cursor,
  width,
  htmlFor,
  transform,
}, ref) => {
  const variantClasses = {
    high: 'text-[var(--ui-color-text-high)]',
    med: 'text-[var(--ui-color-text-med)]',
    low: 'text-[var(--ui-color-text-low)]',
    primary: 'text-[var(--ui-color-intent-primary)]',
    success: 'text-[var(--ui-color-intent-success)]',
    warning: 'text-[var(--ui-color-intent-warning)]',
    critical: 'text-[var(--ui-color-intent-critical)]',
    telemetry: 'text-[var(--ui-color-intent-telemetry)]',
    inherit: 'text-inherit',
  };
  
  const sizeMap: Record<string, string> = {
    xs: 'text-[10px]',
    sm: 'text-xs',
    base: 'text-sm',
    md: 'text-sm',
    lg: 'text-base',
    xl: 'text-lg',
    '2xl': 'text-xl',
    '3xl': 'text-2xl',
    '4xl': 'text-3xl',
  };

  const getResponsiveSize = (s: any) => {
    if (!s) return sizeMap['md'];
    if (typeof s === 'string') return sizeMap[s] || sizeMap['md'];
    const classes = [];
    if (s.base) classes.push(sizeMap[s.base]);
    if (s.sm) classes.push(`sm:${sizeMap[s.sm]}`);
    if (s.md) classes.push(`md:${sizeMap[s.md]}`);
    if (s.lg) classes.push(`lg:${sizeMap[s.lg]}`);
    if (s.xl) classes.push(`xl:${sizeMap[s.xl]}`);
    return classes.join(' ');
  };

  const weightClasses = {
    light: 'font-light',
    normal: 'font-normal',
    medium: 'font-medium',
    semibold: 'font-semibold',
    bold: 'font-bold',
  };

  const leadingClasses = {
    none: 'leading-none',
    tight: 'leading-tight',
    snug: 'leading-snug',
    normal: 'leading-normal',
    relaxed: 'leading-relaxed',
    loose: 'leading-loose',
  };

  const classes = [
    variantClasses[variant as keyof typeof variantClasses] || '',
    getResponsiveSize(size),
    weightClasses[weight as keyof typeof weightClasses] || '',
    align === 'center' || textAlign === 'center' ? 'text-center' : (align === 'right' || textAlign === 'right' ? 'text-right' : 'text-left'),
    (mono || font === 'mono') ? 'font-mono' : 'font-sans',
    uppercase ? 'uppercase tracking-widest' : '',
    leadingClasses[leading as keyof typeof leadingClasses] || '',
    block ? 'block' : 'inline',
    truncate ? 'truncate' : '',
    transition ? 'transition-all duration-200' : '',
    italic ? 'italic' : '',
    animate === 'pulse' ? 'animate-pulse' : '',
    capitalize ? 'capitalize' : '',
    className,
  ].filter(Boolean).join(' ');

  const combinedStyle: React.CSSProperties = {
    ...style,
    ...(display ? { display } : {}),
    ...(alignItems ? { alignItems } : {}),
    ...(gap !== undefined ? { gap: `${gap * 0.25}rem` } : {}),
    ...(cursor ? { cursor } : {}),
    ...(width !== undefined ? { width } : {}),
    ...(opacity !== undefined ? { opacity } : {}),
    ...(maxWidth !== undefined ? { maxWidth } : {}),
    ...(mx === 'auto' ? { marginLeft: 'auto', marginRight: 'auto' } : {}),
    ...(pl !== undefined ? { paddingLeft: `${pl * 0.25}rem` } : {}),
    ...(px !== undefined ? { paddingLeft: `${px * 0.25}rem`, paddingRight: `${px * 0.25}rem` } : {}),
    ...(py !== undefined ? { paddingTop: `${py * 0.25}rem`, paddingBottom: `${py * 0.25}rem` } : {}),
    ...(paddingX !== undefined ? { paddingLeft: `${paddingX * 0.25}rem`, paddingRight: `${paddingX * 0.25}rem` } : {}),
    ...(paddingY !== undefined ? { paddingTop: `${paddingY * 0.25}rem`, paddingBottom: `${paddingY * 0.25}rem` } : {}),
    ...(mt !== undefined ? { marginTop: typeof mt === 'number' ? `${mt * 0.25}rem` : mt } : {}),
    ...(mb !== undefined ? { marginBottom: typeof mb === 'number' ? `${mb * 0.25}rem` : mb } : {}),
    ...(ml !== undefined ? { marginLeft: typeof ml === 'number' ? `${ml * 0.25}rem` : ml } : {}),
    ...(mr !== undefined ? { marginRight: typeof mr === 'number' ? `${mr * 0.25}rem` : mr } : {}),
    ...(marginTop !== undefined ? { marginTop: typeof marginTop === 'number' ? `${marginTop * 0.25}rem` : marginTop } : {}),
    ...(marginBottom !== undefined ? { marginBottom: typeof marginBottom === 'number' ? `${marginBottom * 0.25}rem` : marginBottom } : {}),
    ...(color ? { color } : {}),
    ...(letterSpacing ? { letterSpacing } : {}),
    ...(lineHeight ? { lineHeight } : {}),
    ...(flexGrow !== undefined ? { flexGrow } : {}),
    ...(flexShrink !== undefined ? { flexShrink } : {}),
    ...(lineClamp !== undefined ? { display: '-webkit-box', WebkitLineClamp: lineClamp, WebkitBoxOrient: 'vertical', overflow: 'hidden' } : {}),
    ...(borderLeft ? { borderLeft: `1px solid ${borderColor || 'var(--ui-color-border-default)'}` } : {}),
    ...(fontSize ? { fontSize } : {}),
    ...(transform ? { textTransform: transform as any } : {}),
  };

  const Tag = as;

  return (
    <Tag ref={ref} className={classes} style={combinedStyle} aria-label={ariaLabel} htmlFor={htmlFor}>
      {children}
    </Tag>
  );
});

Text.displayName = 'Text';