import { Check, Copy } from 'lucide-react';
import type { ButtonHTMLAttributes, ReactNode } from 'react';

import {
  type PlatformActionButtonSize,
  type PlatformActionButtonShape,
  type PlatformActionButtonSurface,
  type PlatformActionButtonTone,
} from './platformActionButtonModel';
import { PlatformActionButton } from './PlatformActionButton';
import {
  getPlatformPillBadgeClassName,
  type PlatformPillBadgeSize,
  type PlatformPillBadgeTone,
} from './platformPillBadgeModel';
import type { CopyFeedbackState } from './useCopyFeedback';

export type CopyFeedbackButtonActionAppearance = 'plain' | 'pill';

type CopyFeedbackButtonProps = Omit<
  ButtonHTMLAttributes<HTMLButtonElement>,
  'children'
> & {
  state: CopyFeedbackState;
  idleLabel: ReactNode;
  copiedLabel?: ReactNode;
  failedLabel?: ReactNode;
  idleIcon?: ReactNode;
  copiedIcon?: ReactNode;
  failedIcon?: ReactNode;
  showIcon?: boolean;
  showLabel?: boolean;
  labelClassName?: string;
  accessibleLabel?: string;
  actionSurface?: PlatformActionButtonSurface;
  actionTone?: PlatformActionButtonTone;
  actionSize?: PlatformActionButtonSize;
  actionShape?: PlatformActionButtonShape;
  actionFullWidth?: boolean;
  actionAppearance?: CopyFeedbackButtonActionAppearance;
  actionPillTone?: PlatformPillBadgeTone;
  actionPillSize?: PlatformPillBadgeSize;
};

function resolveCopyFeedbackLabel(
  state: CopyFeedbackState,
  idleLabel: ReactNode,
  copiedLabel: ReactNode,
  failedLabel: ReactNode,
) {
  if (state === 'copied') {
    return copiedLabel;
  }
  if (state === 'failed') {
    return failedLabel;
  }
  return idleLabel;
}

/**
 * 统一复制反馈按钮。
 * useCopyFeedback 负责复制状态，这里只收口按钮里的图标、文案和可访问名称。
 */
export function CopyFeedbackButton({
  state,
  idleLabel,
  copiedLabel = '已复制',
  failedLabel = '复制失败',
  idleIcon = <Copy className="h-4 w-4" />,
  copiedIcon = <Check className="h-4 w-4" />,
  failedIcon,
  showIcon = true,
  showLabel = true,
  labelClassName,
  accessibleLabel: accessibleLabelOverride,
  actionSurface,
  actionTone = 'primary',
  actionSize = 'sm',
  actionShape = 'default',
  actionFullWidth = false,
  actionAppearance = 'plain',
  actionPillTone = 'neutral',
  actionPillSize = 'xs',
  className,
  'aria-label': ariaLabel,
  title,
  ...buttonProps
}: CopyFeedbackButtonProps) {
  const label = resolveCopyFeedbackLabel(
    state,
    idleLabel,
    copiedLabel,
    failedLabel,
  );
  const icon =
    state === 'copied'
      ? copiedIcon
      : state === 'failed'
        ? (failedIcon ?? idleIcon)
        : idleIcon;
  const accessibleLabel =
    accessibleLabelOverride ??
    (typeof label === 'string'
      ? label
      : typeof idleLabel === 'string'
        ? idleLabel
        : undefined);
  const resolvedAriaLabel = ariaLabel ?? accessibleLabel;
  const resolvedTitle =
    title ?? (typeof accessibleLabel === 'string' ? accessibleLabel : undefined);
  const content = (
    <>
      {showIcon ? icon : null}
      {showLabel ? <span className={labelClassName}>{label}</span> : null}
    </>
  );

  if (actionSurface) {
    return (
      <PlatformActionButton
        surface={actionSurface}
        tone={actionTone}
        size={actionSize}
        shape={actionShape}
        fullWidth={actionFullWidth}
        className={className}
        {...buttonProps}
        aria-label={resolvedAriaLabel}
        title={resolvedTitle}
      >
        {content}
      </PlatformActionButton>
    );
  }

  return (
    <button
      type="button"
      className={[
        actionAppearance === 'pill'
          ? getPlatformPillBadgeClassName({
              tone: actionPillTone,
              size: actionPillSize,
            })
          : null,
        className,
      ]
        .filter(Boolean)
        .join(' ')}
      {...buttonProps}
      aria-label={resolvedAriaLabel}
      title={resolvedTitle}
    >
      {content}
    </button>
  );
}