'use client'

import React from 'react'
import { useCompliance } from '../provider'
import { ComplianceScore } from './ComplianceScore'
import { RiskMatrix } from './RiskMatrix'

export interface ComplianceDashboardProps {
  showScore?: boolean
  showRisks?: boolean
  showProgress?: boolean
  showObligations?: boolean
  className?: string
  style?: React.CSSProperties
}

export function ComplianceDashboard({
  showScore = true,
  showRisks = true,
  showProgress = true,
  showObligations = true,
  className,
  style,
}: ComplianceDashboardProps) {
  const { state, compliance, completionPercentage, phase1Completion, phase2Completion } =
    useCompliance()

  const score = compliance.calculateComplianceScore()
  const criticalRisks = compliance.getCriticalRisks()
  const upcomingObligations = compliance.getUpcomingObligations()
  const overdueObligations = compliance.getOverdueObligations()

  const containerStyle: React.CSSProperties = {
    fontFamily: 'system-ui, -apple-system, sans-serif',
    ...style,
  }

  const cardStyle: React.CSSProperties = {
    backgroundColor: '#fff',
    borderRadius: '8px',
    padding: '20px',
    boxShadow: '0 1px 3px rgba(0, 0, 0, 0.1)',
    marginBottom: '20px',
  }

  const gridStyle: React.CSSProperties = {
    display: 'grid',
    gridTemplateColumns: 'repeat(auto-fit, minmax(250px, 1fr))',
    gap: '20px',
    marginBottom: '20px',
  }

  const statStyle: React.CSSProperties = {
    ...cardStyle,
    textAlign: 'center',
  }

  const statValueStyle: React.CSSProperties = {
    fontSize: '36px',
    fontWeight: 700,
    margin: '10px 0',
  }

  const statLabelStyle: React.CSSProperties = {
    fontSize: '14px',
    color: '#666',
  }

  return (
    <div style={containerStyle} className={className}>
      <h1 style={{ margin: '0 0 20px' }}>Compliance Dashboard</h1>

      {/* Stats Grid */}
      <div style={gridStyle}>
        {showScore && (
          <div style={statStyle}>
            <div style={statLabelStyle}>Compliance Score</div>
            <div style={{ ...statValueStyle, color: score.overall >= 70 ? '#16a34a' : '#dc2626' }}>
              {score.overall}%
            </div>
            <div style={statLabelStyle}>
              Trend:{' '}
              {score.trend === 'UP' ? '↑ Steigend' : score.trend === 'DOWN' ? '↓ Fallend' : '→ Stabil'}
            </div>
          </div>
        )}

        {showProgress && (
          <>
            <div style={statStyle}>
              <div style={statLabelStyle}>Gesamtfortschritt</div>
              <div style={statValueStyle}>{completionPercentage}%</div>
              <div style={statLabelStyle}>
                {state.completedSteps.length} von 19 Schritten abgeschlossen
              </div>
            </div>

            <div style={statStyle}>
              <div style={statLabelStyle}>Phase 1: Assessment</div>
              <div style={statValueStyle}>{phase1Completion}%</div>
              <div style={{ height: '8px', backgroundColor: '#e5e5e5', borderRadius: '4px' }}>
                <div
                  style={{
                    height: '100%',
                    width: `${phase1Completion}%`,
                    backgroundColor: '#3b82f6',
                    borderRadius: '4px',
                  }}
                />
              </div>
            </div>

            <div style={statStyle}>
              <div style={statLabelStyle}>Phase 2: Dokumentation</div>
              <div style={statValueStyle}>{phase2Completion}%</div>
              <div style={{ height: '8px', backgroundColor: '#e5e5e5', borderRadius: '4px' }}>
                <div
                  style={{
                    height: '100%',
                    width: `${phase2Completion}%`,
                    backgroundColor: '#8b5cf6',
                    borderRadius: '4px',
                  }}
                />
              </div>
            </div>
          </>
        )}
      </div>

      {/* Main Content Grid */}
      <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: '20px' }}>
        {/* Score Breakdown */}
        {showScore && (
          <div style={cardStyle}>
            <h3 style={{ margin: '0 0 15px' }}>Score nach Regulierung</h3>
            {Object.entries(score.byRegulation).map(([reg, value]) => (
              <div
                key={reg}
                style={{
                  display: 'flex',
                  justifyContent: 'space-between',
                  alignItems: 'center',
                  padding: '10px 0',
                  borderBottom: '1px solid #eee',
                }}
              >
                <span>{reg}</span>
                <span style={{ fontWeight: 600, color: value >= 70 ? '#16a34a' : '#dc2626' }}>
                  {value}%
                </span>
              </div>
            ))}
          </div>
        )}

        {/* Obligations */}
        {showObligations && (
          <div style={cardStyle}>
            <h3 style={{ margin: '0 0 15px' }}>Anstehende Pflichten</h3>

            {overdueObligations.length > 0 && (
              <div
                style={{
                  padding: '10px',
                  backgroundColor: '#fef2f2',
                  borderRadius: '4px',
                  marginBottom: '10px',
                }}
              >
                <strong style={{ color: '#dc2626' }}>
                  {overdueObligations.length} überfällige Pflichten!
                </strong>
              </div>
            )}

            {upcomingObligations.length === 0 && overdueObligations.length === 0 ? (
              <p style={{ color: '#666' }}>Keine anstehenden Pflichten in den nächsten 30 Tagen.</p>
            ) : (
              <div>
                {[...overdueObligations, ...upcomingObligations].slice(0, 5).map(o => (
                  <div
                    key={o.id}
                    style={{
                      padding: '10px',
                      borderBottom: '1px solid #eee',
                    }}
                  >
                    <div style={{ fontWeight: 500 }}>{o.title}</div>
                    <div style={{ fontSize: '12px', color: '#666' }}>
                      {o.regulationCode} Art. {o.article}
                    </div>
                    {o.deadline && (
                      <div
                        style={{
                          fontSize: '12px',
                          color: new Date(o.deadline) < new Date() ? '#dc2626' : '#666',
                        }}
                      >
                        Frist: {new Date(o.deadline).toLocaleDateString('de-DE')}
                      </div>
                    )}
                  </div>
                ))}
              </div>
            )}
          </div>
        )}
      </div>

      {/* Risk Matrix */}
      {showRisks && state.risks.length > 0 && (
        <div style={cardStyle}>
          <h3 style={{ margin: '0 0 15px' }}>Risikomatrix</h3>
          <RiskMatrix risks={state.risks} />

          {criticalRisks.length > 0 && (
            <div
              style={{
                marginTop: '15px',
                padding: '10px',
                backgroundColor: '#fef2f2',
                borderRadius: '4px',
              }}
            >
              <strong style={{ color: '#dc2626' }}>
                {criticalRisks.length} kritische/hohe Risiken ohne Mitigation
              </strong>
            </div>
          )}
        </div>
      )}

      {/* Controls Summary */}
      <div style={cardStyle}>
        <h3 style={{ margin: '0 0 15px' }}>Controls Übersicht</h3>
        <div style={gridStyle}>
          <div>
            <div style={{ fontSize: '24px', fontWeight: 700 }}>{state.controls.length}</div>
            <div style={{ color: '#666' }}>Gesamt</div>
          </div>
          <div>
            <div style={{ fontSize: '24px', fontWeight: 700, color: '#16a34a' }}>
              {state.controls.filter(c => c.implementationStatus === 'IMPLEMENTED').length}
            </div>
            <div style={{ color: '#666' }}>Implementiert</div>
          </div>
          <div>
            <div style={{ fontSize: '24px', fontWeight: 700, color: '#f59e0b' }}>
              {state.controls.filter(c => c.implementationStatus === 'PARTIAL').length}
            </div>
            <div style={{ color: '#666' }}>Teilweise</div>
          </div>
          <div>
            <div style={{ fontSize: '24px', fontWeight: 700, color: '#dc2626' }}>
              {state.controls.filter(c => c.implementationStatus === 'NOT_IMPLEMENTED').length}
            </div>
            <div style={{ color: '#666' }}>Offen</div>
          </div>
        </div>
      </div>
    </div>
  )
}