'use client'

/**
 * Header - figma-v2 品牌導航列
 * ==============================
 * @updated 2026-04-03 Claude Code — 完整對齊 figma-v2 設計
 *   - brand-area: A + wooo(VT323) + I 混合字體 logo
 *   - page-title: Syne 26px 800
 *   - lang-btn: pill 樣式 (border-radius 20px)
 *   - avatar: 34px 圓形 #d97757
 *
 * Phase 19: 使用 Z_INDEX.HEADER (30)
 * @see lib/constants/z-index.ts
 */

import { useCallback } from 'react'
import { useTranslations } from 'next-intl'
import { usePathname } from 'next/navigation'
import { Z_INDEX } from '@/lib/constants/z-index'

// =============================================================================
// Types
// =============================================================================

interface HeaderProps {
  locale: string
  sidebarCollapsed?: boolean
  className?: string
}

// =============================================================================
// Component
// =============================================================================

export function Header({
  locale,
  sidebarCollapsed = false,
  className,
}: HeaderProps) {
  const t = useTranslations('locale')
  const tDashboard = useTranslations('dashboard')
  const pathname = usePathname()

  const switchLocale = useCallback((newLocale: string) => {
    const newPath = pathname.replace(`/${locale}`, `/${newLocale}`)
    window.location.href = newPath
  }, [locale, pathname])

  return (
    <header
      className={className}
      style={{
        position: 'fixed',
        top: 0,
        left: 0,
        width: '100%',
        height: 68,
        background: '#faf9f3',
        borderBottom: '0.5px solid #e0ddd4',
        display: 'flex',
        alignItems: 'center',
        zIndex: Z_INDEX.HEADER,
      }}
    >
      {/* Brand Area — 224px 固定寬，與 sidebar 對齊 */}
      <div style={{
        width: sidebarCollapsed ? 64 : 224,
        height: 68,
        display: 'flex',
        alignItems: 'center',
        padding: '0 14px',
        gap: 10,
        flexShrink: 0,
        borderRight: '0.5px solid #e0ddd4',
        background: '#faf9f3',
        overflow: 'hidden',
        transition: 'width 0.3s ease',
      }}>
        {/* NemoClaw mini SVG */}
        <div style={{ width: 36, height: 36, flexShrink: 0 }}>
          <svg width="36" height="36" viewBox="0 0 140 140" fill="none" xmlns="http://www.w3.org/2000/svg">
            <defs>
              <linearGradient id="hdr-ceramic" x1="0%" y1="0%" x2="100%" y2="100%">
                <stop offset="0%" stopColor="#FFFFFF" />
                <stop offset="40%" stopColor="#F8F8F8" />
                <stop offset="70%" stopColor="#E8E8E8" />
                <stop offset="100%" stopColor="#D8D8D8" />
              </linearGradient>
              <radialGradient id="hdr-led" cx="40%" cy="35%" r="60%">
                <stop offset="0%" stopColor="#7AB8F5" />
                <stop offset="100%" stopColor="#2B6CB0" />
              </radialGradient>
            </defs>
            <circle cx="70" cy="70" r="32" fill="url(#hdr-ceramic)" stroke="#E0E0E0" strokeWidth="1" />
            <circle cx="70" cy="70" r="16" fill="url(#hdr-led)">
              <animate attributeName="r" values="14;17;14" dur="2s" repeatCount="indefinite" />
            </circle>
            <circle cx="70" cy="70" r="8" fill="white" opacity="0.8" />
            <path d="M 70 38 L 70 18 L 58 6 M 70 18 L 82 6" stroke="url(#hdr-ceramic)" strokeWidth="6" strokeLinecap="round" fill="none" />
            <path d="M 70 38 L 70 18 L 58 6 M 70 18 L 82 6" stroke="#4A90D9" strokeWidth="3" strokeLinecap="round" fill="none" opacity="0.5" />
            <path d="M 38 70 L 18 70 L 6 58 M 18 70 L 6 82" stroke="url(#hdr-ceramic)" strokeWidth="6" strokeLinecap="round" fill="none" />
            <path d="M 38 70 L 18 70 L 6 58 M 18 70 L 6 82" stroke="#4A90D9" strokeWidth="3" strokeLinecap="round" fill="none" opacity="0.5" />
            <path d="M 102 70 L 122 70 L 134 58 M 122 70 L 134 82" stroke="url(#hdr-ceramic)" strokeWidth="6" strokeLinecap="round" fill="none" />
            <path d="M 102 70 L 122 70 L 134 58 M 122 70 L 134 82" stroke="#4A90D9" strokeWidth="3" strokeLinecap="round" fill="none" opacity="0.5" />
            <path d="M 48 92 L 28 112 L 16 116" stroke="url(#hdr-ceramic)" strokeWidth="6" strokeLinecap="round" fill="none" />
            <path d="M 92 92 L 112 112 L 124 116" stroke="url(#hdr-ceramic)" strokeWidth="6" strokeLinecap="round" fill="none" />
            <circle cx="70" cy="70" r="42" fill="none" stroke="#4A90D9" strokeWidth="1" strokeDasharray="6 6" opacity="0.3">
              <animateTransform attributeName="transform" type="rotate" from="0 70 70" to="360 70 70" dur="8s" repeatCount="indefinite" />
            </circle>
          </svg>
        </div>

        {/* Brand text: A + wooo + I (figma 混合字體) */}
        {!sidebarCollapsed && (
          <div style={{ display: 'flex', flexDirection: 'column', gap: 3 }}>
            <div style={{ display: 'flex', alignItems: 'baseline', gap: 0, lineHeight: 1 }}>
              <span style={{ fontFamily: 'var(--font-body), "DM Mono", monospace', fontSize: 22, fontWeight: 700, color: '#141413', letterSpacing: '-0.5px' }}>A</span>
              <span style={{ fontFamily: 'var(--font-dot-matrix), "VT323", monospace', fontSize: 30, color: '#d97757', letterSpacing: 2, lineHeight: 1 }}>wooo</span>
              <span style={{ fontFamily: 'var(--font-body), "DM Mono", monospace', fontSize: 22, fontWeight: 700, color: '#141413', letterSpacing: '-0.5px' }}>I</span>
            </div>
          </div>
        )}
      </div>

      {/* Header Right — page title + lang switcher + avatar */}
      <div style={{
        flex: 1,
        display: 'flex',
        alignItems: 'center',
        padding: '0 24px',
        gap: 16,
        background: '#faf9f3',
      }}>
        {/* Page title */}
        <span style={{
          fontFamily: 'var(--font-heading), Syne, sans-serif',
          fontSize: 26,
          fontWeight: 800,
          color: '#141413',
          flex: 1,
          letterSpacing: '-0.5px',
        }}>
          {tDashboard('title')}
        </span>

        {/* ⌘K Command Palette 入口提示 */}
        <button
          onClick={() => {
            const e = new KeyboardEvent('keydown', { key: 'k', metaKey: true, bubbles: true })
            window.dispatchEvent(e)
          }}
          style={{
            display: 'flex', alignItems: 'center', gap: 6,
            padding: '5px 12px',
            background: '#fff', border: '0.5px solid #e0ddd4', borderRadius: 8,
            cursor: 'pointer', fontSize: 11, color: '#87867f',
            transition: 'all 0.15s',
          }}
          onMouseEnter={e => { (e.currentTarget as HTMLButtonElement).style.borderColor = '#4A90D9'; (e.currentTarget as HTMLButtonElement).style.color = '#4A90D9' }}
          onMouseLeave={e => { (e.currentTarget as HTMLButtonElement).style.borderColor = '#e0ddd4'; (e.currentTarget as HTMLButtonElement).style.color = '#87867f' }}
        >
          <svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.5" strokeLinecap="round" strokeLinejoin="round"><circle cx="11" cy="11" r="8"/><path d="m21 21-4.35-4.35"/></svg>
          <span style={{ fontFamily: 'var(--font-body), monospace' }}>{tDashboard('searchPlaceholderShort')}</span>
          <kbd style={{ fontSize: 9, background: '#f0ede5', borderRadius: 3, padding: '1px 5px', fontFamily: 'monospace', color: '#87867f' }}>⌘K</kbd>
        </button>

        {/* Language switcher — pill style */}
        <button
          onClick={() => switchLocale('zh-TW')}
          style={{
            padding: '5px 12px',
            fontFamily: 'var(--font-body), "DM Mono", monospace',
            fontSize: 11,
            border: '0.5px solid',
            borderRadius: 20,
            cursor: 'pointer',
            transition: 'all 0.15s',
            ...(locale === 'zh-TW'
              ? { background: '#141413', color: '#fff', borderColor: '#141413' }
              : { background: '#fff', color: '#87867f', borderColor: '#e0ddd4' }),
          }}
        >
          {t('zhTW')}
        </button>
        <button
          onClick={() => switchLocale('en')}
          style={{
            padding: '5px 12px',
            fontFamily: 'var(--font-body), "DM Mono", monospace',
            fontSize: 11,
            border: '0.5px solid',
            borderRadius: 20,
            cursor: 'pointer',
            transition: 'all 0.15s',
            ...(locale === 'en'
              ? { background: '#141413', color: '#fff', borderColor: '#141413' }
              : { background: '#fff', color: '#87867f', borderColor: '#e0ddd4' }),
          }}
        >
          {t('en')}
        </button>

        {/* Avatar — 34px 圓形 #d97757 */}
        <div style={{
          width: 34,
          height: 34,
          borderRadius: '50%',
          background: '#d97757',
          display: 'flex',
          alignItems: 'center',
          justifyContent: 'center',
          fontSize: 12,
          color: '#fff',
          fontWeight: 700,
          flexShrink: 0,
          fontFamily: 'var(--font-body), monospace',
        }}>
          OG
        </div>
      </div>
    </header>
  )
}
