/**
 * ProjectCard - Enterprise SaaS Style (Linear/Notion inspired)
 * 
 * Visual Design:
 * - Modern typography with Microsoft YaHei optimization
 * - Soft shadows and generous spacing
 * - Clean section headers with decorative accents
 * - Traffic light system for FAI values
 */

import { ProjectData } from '@/types/project';
import { 
  getRiskBadgeClass, 
  formatDate, 
  getDisplayValue,
  parseFAIValue,
  getFAIColorClass,
  getCardVisualState,
  formatExcelDate
} from '@/lib/projectUtils';
import { Target, FlaskConical, CheckCircle2 } from 'lucide-react';

interface ProjectCardProps {
  project: ProjectData;
}

export default function ProjectCard({ project }: ProjectCardProps) {
  const { no, identity, milestones, details } = project;
  
  // Get visual state based on currentNode
  const visualState = getCardVisualState(milestones.currentNode);
  
  return (
    <div 
      className={`
        ${visualState.bgClass} rounded-xl overflow-hidden
        transition-all duration-300 ease-out
        hover:shadow-xl hover:-translate-y-0.5
        ${visualState.borderClass}
      `}
    >
      {/* Card Header */}
      <div className="px-8 py-5 border-b border-slate-100 bg-gradient-to-r from-slate-50/50 to-white">
        <div className="flex items-start justify-between gap-4">
          <div className="flex-1 min-w-0">
            <h3 className="text-2xl font-bold text-slate-900 tracking-tight leading-tight">
              {getDisplayValue(identity.projectName, 'N/A')}
            </h3>
            <p className="text-sm text-slate-500 mt-1.5 font-medium">
              {getDisplayValue(identity.productName, 'N/A')} <span className="text-slate-300 mx-2">•</span> NO. {getDisplayValue(no, 'N/A')}
            </p>
          </div>
          {/* Status Badge - Only show if valid currentNode */}
          {visualState.showBadge && (
            <span className={`px-4 py-1.5 rounded-lg text-sm font-semibold border-2 whitespace-nowrap ${visualState.badgeClass}`}>
              {visualState.badgeLabel}
            </span>
          )}
        </div>
      </div>

      {/* Section 1: 项目基本信息 */}
      <div className="px-8 py-6 bg-slate-50/50">
        <div className="flex items-center gap-2 mb-4">
          <div className="w-1 h-5 bg-blue-500 rounded-full" />
          <h4 className="text-lg font-bold text-slate-800">
            项目基本信息
          </h4>
        </div>
        <div className="grid grid-cols-4 gap-x-6 gap-y-4">
          <InfoField label="客户名称" value={identity.customerName} />
          <InfoField label="客户基地" value={identity.customerBase} />
          <InfoField label="落地工厂" value={identity.factory} />
          <InfoField label="模具套数" value={identity.moldSets} />
          
          <InfoField label="料号" value={identity.partNumber} />
          <InfoField label="穴号" value={identity.cavityNumber} />
          <InfoField label="模具编号" value={identity.moldNumber} />
          <InfoField label="项目经理" value={identity.projectManager} />
          
          <InfoField label="项目工程师" value={identity.projectEngineer} />
          <InfoField label="模具项目" value={identity.moldProject} />
          <InfoField label="项目QE" value={identity.qe} />
          <InfoField label="风险等级" value={identity.riskLevel} highlight />
        </div>
      </div>

      {/* Section 2: 内部节点 */}
      <div className="px-8 py-6 bg-white">
        <div className="flex items-center gap-2 mb-5">
          <div className="w-1 h-5 bg-indigo-500 rounded-full" />
          <h4 className="text-lg font-bold text-slate-800">
            内部节点
          </h4>
        </div>
        
        {/* Timeline Visual - CSS Grid for Perfect Alignment */}
        <div className="mb-6">
          <div className="relative w-full">
            {/* The Grey Line - Perfectly centered start-to-end */}
            <div className="absolute top-4 sm:top-5 left-[10%] right-[10%] h-0.5 bg-slate-200 -z-10" />
            
            {/* The Nodes - Grid System (5 equal columns) */}
            <div className="grid grid-cols-5 w-full">
              <TimelineNode label="KICK OFF" date={formatDate(milestones.projectStart)} />
              <TimelineNode label="T1" date={formatDate(milestones.t1)} />
              <TimelineNode label="G/L" date={formatDate(milestones.glTime)} />
              <TimelineNode label="VMP" date={formatDate(milestones.vmp)} />
              <TimelineNode label="MP" date={formatDate(milestones.mp)} />
            </div>
          </div>
        </div>

        {/* Status Indicators Grid */}
        <div className="grid grid-cols-3 gap-4">
          <StatusField 
            icon={<Target className="w-4 h-4" />}
            label="当前阶段" 
            value={milestones.currentStage} 
          />
          <StatusField 
            icon={<FlaskConical className="w-4 h-4" />}
            label="试模次数" 
            value={milestones.trialCount} 
          />
          <StatusField 
            icon={<CheckCircle2 className="w-4 h-4" />}
            label="T1尺寸达标" 
            value={milestones.t1SizeQualified} 
          />
          
          {/* FAI Fields with Traffic Light Logic */}
          <FAIField 
            label="Tooling FAI" 
            value={milestones.toolingFAI} 
          />
          <FAIField 
            label="Part FAI" 
            value={milestones.partFAI} 
          />
          
          {/* Status is now shown in header badge */}
        </div>
      </div>

      {/* Section 3: 项目推进细节 - Executive View */}
      <div className="px-8 py-6 bg-slate-50 border-t-2 border-slate-100">
        <div className="flex justify-between items-center mb-4">
          <div className="flex items-center gap-2">
            <div className="w-1 h-5 bg-slate-700 rounded-full" />
            <h4 className="text-lg font-bold text-slate-700">
              项目推进细节
            </h4>
          </div>
          {/* Date Display with formatExcelDate */}
          <span className="text-sm font-medium text-slate-500">
            更新时间: {formatExcelDate(details.detailDate)}
          </span>
        </div>
        {/* The Content Block - Executive View Typography (Premium Bold) */}
        <p 
          className="whitespace-pre-wrap text-lg font-bold leading-loose text-slate-800"
          style={{ 
            fontFamily: "'Microsoft YaHei', 'PingFang SC', sans-serif",
            letterSpacing: "0.02em" // Adds design feel to Chinese text
          }}
        >
          {getDisplayValue(details.detailProgress, '无详细内容')}
        </p>
      </div>
    </div>
  );
}

// Helper component for info fields in Section 1
function InfoField({ 
  label, 
  value, 
  highlight = false 
}: { 
  label: string; 
  value: string; 
  highlight?: boolean;
}) {
  return (
    <div className="space-y-1">
      <div className="text-xs font-medium text-slate-500 uppercase tracking-wider">{label}</div>
      <div className={`text-sm font-semibold leading-snug ${highlight ? 'text-blue-600' : 'text-slate-900'}`}>
        {getDisplayValue(value, '-')}
      </div>
    </div>
  );
}

// Helper component for timeline nodes in Section 2
function TimelineNode({ label, date }: { label: string; date: string }) {
  return (
    <div className="relative flex flex-col items-center">
      <div className="w-8 h-8 sm:w-10 sm:h-10 rounded-full bg-white border-2 border-indigo-500 shadow-sm flex items-center justify-center mb-1.5 sm:mb-2">
        <div className="w-3 h-3 sm:w-4 sm:h-4 rounded-full bg-indigo-500" />
      </div>
      <div className="text-[10px] sm:text-xs font-bold text-slate-600 uppercase tracking-wider mb-0.5 whitespace-nowrap text-center">{label}</div>
      <div className="text-[9px] sm:text-[10px] text-slate-500 font-medium whitespace-nowrap text-center scale-90">{date}</div>
    </div>
  );
}

// Helper component for status fields in Section 2
function StatusField({ 
  icon, 
  label, 
  value 
}: { 
  icon?: React.ReactNode;
  label: string; 
  value: string;
}) {
  return (
    <div className="flex items-start gap-3 p-3 rounded-lg bg-slate-50/50">
      {icon && <span className="text-slate-400 mt-0.5">{icon}</span>}
      <div className="flex-1 min-w-0">
        <div className="text-xs font-medium text-slate-500 uppercase tracking-wider mb-1">{label}</div>
        <div className="text-sm font-semibold text-slate-900 truncate">
          {getDisplayValue(value, '-')}
        </div>
      </div>
    </div>
  );
}

// Helper component for FAI fields with traffic light logic
function FAIField({ 
  label, 
  value 
}: { 
  label: string; 
  value: string;
}) {
  const displayValue = parseFAIValue(value);
  const colorClass = getFAIColorClass(value);
  
  return (
    <div className="flex items-start gap-3 p-3 rounded-lg bg-slate-50/50">
      <div className="flex-1 min-w-0">
        <div className="text-xs font-medium text-slate-500 uppercase tracking-wider mb-1">{label}</div>
        <div className={`text-sm font-semibold truncate ${colorClass}`}>
          {displayValue}
        </div>
      </div>
    </div>
  );
}