'use client'

/**
 * SBOM (Software Bill of Materials) - Lern-Wizard
 *
 * Interaktiver Wizard zum Verstehen der SBOM
 */

import { useState } from 'react'
import Link from 'next/link'
import { INITIAL_STEPS, WizardStep } from './_components/types'
import { WizardStepper, EducationCard } from './_components/WizardComponents'
import { CategoryDemo } from './_components/CategoryDemo'

export default function SBOMWizardPage() {
  const [currentStep, setCurrentStep] = useState(0)
  const [steps, setSteps] = useState<WizardStep[]>(INITIAL_STEPS)

  const currentStepData = steps[currentStep]
  const isWelcome = currentStepData?.id === 'welcome'
  const isSummary = currentStepData?.id === 'summary'

  const goToNext = () => {
    if (currentStep < steps.length - 1) {
      setSteps(prev => prev.map((step, idx) =>
        idx === currentStep && step.status === 'pending'
          ? { ...step, status: 'completed' }
          : step
      ))
      setCurrentStep(prev => prev + 1)
    }
  }

  const goToPrev = () => {
    if (currentStep > 0) {
      setCurrentStep(prev => prev - 1)
    }
  }

  const handleStepClick = (index: number) => {
    setCurrentStep(index)
  }

  return (
    <div className="min-h-screen bg-slate-100 py-8">
      <div className="max-w-4xl mx-auto px-4">
        {/* Header */}
        <div className="bg-white rounded-lg shadow-lg p-6 mb-6">
          <div className="flex items-center justify-between">
            <div>
              <h1 className="text-2xl font-bold text-slate-800">📋 SBOM Lern-Wizard</h1>
              <p className="text-slate-600 mt-1">
                Software Bill of Materials verstehen
              </p>
            </div>
            <Link
              href="/admin/sbom"
              className="text-primary-600 hover:text-primary-800 text-sm"
            >
              ← Zurueck zur SBOM
            </Link>
          </div>
        </div>

        {/* Stepper */}
        <div className="bg-white rounded-lg shadow-lg p-6 mb-6">
          <WizardStepper
            steps={steps}
            currentStep={currentStep}
            onStepClick={handleStepClick}
          />
        </div>

        {/* Content */}
        <div className="bg-white rounded-lg shadow-lg p-6">
          {/* Step Header */}
          <div className="flex items-center mb-6">
            <span className="text-4xl mr-4">{currentStepData?.icon}</span>
            <div>
              <h2 className="text-xl font-bold text-slate-800">
                Schritt {currentStep + 1}: {currentStepData?.name}
              </h2>
              <p className="text-slate-500 text-sm">
                {currentStep + 1} von {steps.length}
              </p>
            </div>
          </div>

          {/* Education Card */}
          <EducationCard stepId={currentStepData?.id || ''} />

          {/* Category Demo */}
          <CategoryDemo stepId={currentStepData?.id || ''} />

          {/* Welcome Start Button */}
          {isWelcome && (
            <div className="text-center py-8">
              <button
                onClick={goToNext}
                className="bg-primary-600 text-white px-8 py-3 rounded-lg font-medium hover:bg-primary-700 transition-colors"
              >
                🚀 Lern-Tour starten
              </button>
            </div>
          )}

          {/* Summary Actions */}
          {isSummary && (
            <div className="text-center py-6 space-y-4">
              <div className="flex justify-center gap-4">
                <Link
                  href="/admin/sbom"
                  className="px-6 py-3 bg-primary-600 text-white rounded-lg font-medium hover:bg-primary-700 transition-colors"
                >
                  📋 Zur SBOM
                </Link>
                <button
                  onClick={() => {
                    setCurrentStep(0)
                    setSteps(INITIAL_STEPS.map(s => ({ ...s, status: 'pending' })))
                  }}
                  className="px-6 py-3 bg-slate-200 text-slate-700 rounded-lg font-medium hover:bg-slate-300 transition-colors"
                >
                  🔄 Wizard neu starten
                </button>
              </div>
            </div>
          )}

          {/* Navigation */}
          {!isWelcome && (
            <div className="flex justify-between mt-8 pt-6 border-t">
              <button
                onClick={goToPrev}
                disabled={currentStep === 0}
                className={`px-6 py-2 rounded-lg transition-colors ${
                  currentStep === 0
                    ? 'bg-slate-200 text-slate-400 cursor-not-allowed'
                    : 'bg-slate-200 text-slate-700 hover:bg-slate-300'
                }`}
              >
                ← Zurueck
              </button>

              {!isSummary && (
                <button
                  onClick={goToNext}
                  className="bg-primary-600 text-white px-6 py-2 rounded-lg hover:bg-primary-700 transition-colors"
                >
                  Weiter →
                </button>
              )}
            </div>
          )}
        </div>

        {/* Footer Info */}
        <div className="text-center text-slate-500 text-sm mt-6">
          BreakPilot SBOM - 180+ Komponenten dokumentiert
        </div>
      </div>
    </div>
  )
}