'use client'

/**
 * ConsumerButton — consumer-only actions (Figma-aligned).
 *
 * **When to use**
 * - Any button, submit, or link-styled action in `app/(consumer)/**`,
 *   `components/consumer/**`, and shared consumer overlays (auth, PWA, booking).
 *
 * **When NOT to use**
 * - Admin/dashboard and event-create wizard → `components/formElements/Button`.
 * - Dual cancel/primary rows → `ConsumerActionButtons` (do not hand-roll pairs).
 *
 * **Props (design)**
 * - `fill`: `orange` | `navy` | `fourth` | `fifth` | `gray` | `none` (default `orange`)
 * - `size`: `xs` | `sm` | `md` | `lg` | `xl` — default `lg` text, `sm` icon-only
 * - `radius`: `full` | `control` (10px)
 * - `textColor`: `white`, Tailwind `text-*`, or hex — default white on filled
 * - `fontSize`: default 14
 * - `align`: `center` | `start` (RTL: start = right)
 * - Icons: `iconStart` / `iconEnd` / `icon` + `iconPosition`
 * - `isLoading` disables the control and swaps the icon slot for a spinner (label stays)
 *
 * **هم‌نام بودن ≠ هم‌اندازه بودن:** `size` here ≠ `ConsumerInput` `size` for
 * the same token (see `frontend/docs/consumer-ui-guidelines.md` §4).
 *
 * **className policy:** layout-only (`flex-1`, `mt-5`, `w-full`, …) is OK.
 * Do **not** pass visual overrides (`bg-*`, `text-*`, `rounded-*`, `min-h-*`)
 * to match Figma — stop, tell the product owner, and extend this component
 * after explicit approval.
 *
 * Guidelines: `frontend/docs/consumer-ui-guidelines.md`
 */

import Link from 'next/link'
import { Spinner } from '@heroui/react'
import { forwardRef } from 'react'

import { buildConsumerButtonStyle } from '@/components/consumer/consumerButtonStyles'
import type { ConsumerButtonProps } from '@/components/consumer/consumerButtonTypes'

export type { ConsumerButtonProps } from '@/components/consumer/consumerButtonTypes'

const ConsumerButton = forwardRef<HTMLButtonElement, ConsumerButtonProps>(
  (
    {
      'aria-controls': ariaControls,
      'aria-expanded': ariaExpanded,
      'aria-label': ariaLabel,
      'aria-pressed': ariaPressed,
      'aria-checked': ariaChecked,
      'aria-selected': ariaSelected,
      align = 'center',
      children,
      className,
      radius = 'full',
      disabled = false,
      fill = 'orange',
      fontSize = 14,
      fullWidth = false,
      icon,
      iconEnd,
      iconOnly = false,
      iconPosition = 'start',
      iconStart,
      isLoading = false,
      role,
      size,
      target = '_self',
      textColor,
      to,
      type = 'button',
      onClick,
    },
    ref
  ) => {
    const isDisabled = disabled || isLoading
    const resolvedIconStart = iconStart ?? (iconPosition === 'start' ? icon : undefined)
    const resolvedIconEnd = iconEnd ?? (iconPosition === 'end' ? icon : undefined)
    const { className: resolvedClassName, style } = buildConsumerButtonStyle({
      align,
      className,
      radius,
      fill,
      fontSize,
      fullWidth,
      iconOnly,
      size,
      textColor,
    })

    const iconContent = resolvedIconStart ?? (iconOnly ? children : undefined)
    const loadingSpinner = (
      <Spinner
        color="current"
        size="sm"
      />
    )

    // لودینگ: فقط اسلات آیکن با اسپینر عوض شود؛ لیبل باقی بماند
    const showStartSpinner = isLoading && Boolean(resolvedIconStart || !resolvedIconEnd)
    const showEndSpinner = isLoading && !resolvedIconStart && Boolean(resolvedIconEnd)

    const content = iconOnly ? (
      isLoading ? (
        loadingSpinner
      ) : (
        iconContent
      )
    ) : (
      <>
        {showStartSpinner ? loadingSpinner : resolvedIconStart}
        {children}
        {showEndSpinner ? loadingSpinner : isLoading ? null : resolvedIconEnd}
      </>
    )

    const ariaProps = {
      'aria-checked': ariaChecked,
      'aria-controls': ariaControls,
      'aria-expanded': ariaExpanded,
      'aria-label': ariaLabel,
      'aria-pressed': ariaPressed,
      'aria-selected': ariaSelected,
      role,
    }

    if (to) {
      return (
        <Link
          {...ariaProps}
          aria-disabled={isDisabled || undefined}
          className={resolvedClassName}
          href={to}
          style={style}
          target={target}
          onClick={
            isDisabled
              ? (event) => {
                  event.preventDefault()
                }
              : onClick
          }
        >
          {content}
        </Link>
      )
    }

    return (
      <button
        ref={ref}
        {...ariaProps}
        className={resolvedClassName}
        disabled={isDisabled}
        style={style}
        type={type}
        onClick={onClick}
      >
        {content}
      </button>
    )
  }
)

ConsumerButton.displayName = 'ConsumerButton'

export default ConsumerButton