Initial commit - Journey book (kniha jízd) automation system

Features:
- FastAPI backend for scraping attendance and journey book data
- Deterministic kilometer distribution with random variance
- Refueling form filling with km values
- Next.js frontend with date range selector
- Docker deployment setup

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/.env.local

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+NEXT_PUBLIC_API_URL=http://100.110.142.68:8002

frontend/Dockerfile

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+FROM node:20-alpine
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm install
+
+COPY . .
+
+EXPOSE 3000
+
+CMD ["npm", "run", "dev"]

frontend/app/components/DataPreview.tsx

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+'use client'
+
+import { useState } from 'react'
+import API_URL from '@/lib/api'
+
+interface DataPreviewProps {
+  data: any
+  loading: boolean
+  formData: any
+}
+
+export default function DataPreview({ data, loading, formData }: DataPreviewProps) {
+  const [filling, setFilling] = useState(false)
+  const [fillResult, setFillResult] = useState<any>(null)
+
+  const handleFillToWebsite = async () => {
+    if (!formData) return
+
+    setFilling(true)
+    setFillResult(null)
+
+    try {
+      const response = await fetch(`${API_URL}/api/fill/journeybook`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          username: formData.username,
+          password: formData.password,
+          start_date: formData.startDate,
+          end_date: formData.endDate,
+          start_km: parseInt(formData.startKm),
+          end_km: parseInt(formData.endKm),
+          vehicle_registration: formData.vehicleRegistration,
+          variance: parseFloat(formData.variance),
+          dry_run: false
+        }),
+      })
+
+      if (!response.ok) {
+        const errorData = await response.json()
+        throw new Error(errorData.detail || 'Chyba při vyplňování dat')
+      }
+
+      const result = await response.json()
+      setFillResult(result)
+    } catch (err: any) {
+      alert('Chyba: ' + err.message)
+    } finally {
+      setFilling(false)
+    }
+  }
+  if (loading) {
+    return (
+      <div className="bg-white/98 backdrop-blur-lg rounded-3xl shadow-2xl border border-white/30 overflow-hidden">
+        <div className="flex flex-col items-center justify-center h-96 p-8">
+          <div className="relative">
+            <div className="animate-spin rounded-full h-20 w-20 border-4 border-blue-200"></div>
+            <div className="animate-spin rounded-full h-20 w-20 border-t-4 border-blue-600 absolute top-0"></div>
+          </div>
+          <p className="mt-6 text-gray-700 font-semibold text-lg">Načítání dat...</p>
+        </div>
+      </div>
+    )
+  }
+
+  if (!data) {
+    return (
+      <div className="bg-white/98 backdrop-blur-lg rounded-3xl shadow-2xl border border-white/30 overflow-hidden">
+        <div className="bg-gradient-to-r from-purple-50 to-purple-100 px-8 py-6 border-b border-purple-200">
+          <div className="flex items-center gap-4">
+            <div className="w-12 h-12 bg-gradient-to-br from-purple-500 to-purple-600 rounded-xl flex items-center justify-center shadow-lg">
+              <svg className="w-7 h-7 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z" />
+              </svg>
+            </div>
+            <h2 className="text-3xl font-bold text-gray-800">Náhled dat</h2>
+          </div>
+        </div>
+        <div className="p-8">
+        <div className="flex flex-col items-center justify-center py-16 text-center">
+          <div className="w-20 h-20 bg-gray-100 rounded-full flex items-center justify-center mb-4">
+            <svg className="w-10 h-10 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M7 21h10a2 2 0 002-2V9.414a1 1 0 00-.293-.707l-5.414-5.414A1 1 0 0012.586 3H7a2 2 0 00-2 2v14a2 2 0 002 2z" />
+            </svg>
+          </div>
+          <p className="text-gray-500 font-medium">
+            Vyplňte formulář a klikněte na "Vypočítat"
+          </p>
+          <p className="text-gray-400 text-sm mt-1">
+            Data se zobrazí zde
+          </p>
+        </div>
+        </div>
+      </div>
+    )
+  }
+
+  return (
+    <div className="bg-white/98 backdrop-blur-lg rounded-3xl shadow-2xl border border-white/30 overflow-hidden">
+      <div className="bg-gradient-to-r from-purple-50 to-purple-100 px-8 py-6 border-b border-purple-200">
+        <div className="flex items-center gap-4">
+          <div className="w-12 h-12 bg-gradient-to-br from-purple-500 to-purple-600 rounded-xl flex items-center justify-center shadow-lg">
+            <svg className="w-7 h-7 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z" />
+            </svg>
+          </div>
+          <h2 className="text-3xl font-bold text-gray-800">Náhled dat</h2>
+        </div>
+      </div>
+      <div className="p-8">
+
+      <div className="mb-6 grid grid-cols-2 gap-3 bg-gradient-to-br from-blue-50 to-indigo-50 p-5 rounded-xl border border-blue-100">
+        <div>
+          <p className="text-sm text-gray-600">Měsíc</p>
+          <p className="font-semibold text-lg">{data.month}</p>
+        </div>
+        <div>
+          <p className="text-sm text-gray-600">Celkem záznamů</p>
+          <p className="font-semibold text-lg">{data.total_entries}</p>
+        </div>
+        <div>
+          <p className="text-sm text-gray-600">Počáteční km</p>
+          <p className="font-semibold text-lg">{data.start_km.toLocaleString()}</p>
+        </div>
+        <div>
+          <p className="text-sm text-gray-600">Koncový km</p>
+          <p className="font-semibold text-lg">{data.end_km.toLocaleString()}</p>
+        </div>
+        <div>
+          <p className="text-sm text-gray-600">Celkem ujeto</p>
+          <p className="font-semibold text-lg">{(data.end_km - data.start_km).toLocaleString()} km</p>
+        </div>
+        <div>
+          <p className="text-sm text-gray-600">Filtrováno dnů</p>
+          <p className="font-semibold text-lg">{data.filtered_days}</p>
+        </div>
+      </div>
+
+      <div className="overflow-auto max-h-96 rounded-xl border border-gray-200">
+        <table className="w-full text-sm">
+          <thead className="bg-gradient-to-r from-gray-50 to-gray-100 sticky top-0">
+            <tr>
+              {data.entries.length > 0 && Object.keys(data.entries[0]).map((key: string) => (
+                <th key={key} className="px-4 py-3 text-left font-bold text-gray-700 border-b-2 border-gray-300 whitespace-nowrap">
+                  {key}
+                </th>
+              ))}
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-100 bg-white">
+            {data.entries.map((entry: any, index: number) => (
+              <tr key={index} className="hover:bg-blue-50 transition-colors">
+                {Object.keys(entry).map((key: string) => (
+                  <td key={key} className="px-4 py-3 text-right text-gray-600">
+                    {entry[key] !== null && entry[key] !== undefined ? entry[key] : '-'}
+                  </td>
+                ))}
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </div>
+
+      {formData && formData.startDate === '2025-01-01' && (
+        <div className="mt-6">
+          <button
+            onClick={handleFillToWebsite}
+            disabled={filling}
+            className="w-full bg-gradient-to-r from-orange-600 to-orange-700 hover:from-orange-700 hover:to-orange-800 text-white font-bold py-4 px-6 rounded-xl shadow-lg hover:shadow-2xl transform hover:-translate-y-1 transition-all duration-200 disabled:opacity-50 disabled:cursor-not-allowed"
+          >
+            <span className="flex items-center justify-center gap-3">
+              <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-8l-4-4m0 0L8 8m4-4v12" />
+              </svg>
+              <span className="text-lg">{filling ? 'Vyplňování...' : 'Vyplnit na web'}</span>
+            </span>
+          </button>
+
+          {fillResult && (
+            <div className={`mt-4 ${fillResult.dry_run ? 'bg-blue-50 border-blue-200' : 'bg-green-50 border-green-200'} border rounded-xl p-4`}>
+              <h3 className={`font-bold ${fillResult.dry_run ? 'text-blue-900' : 'text-green-900'} mb-2`}>
+                {fillResult.dry_run ? 'Výsledek DRY RUN:' : 'Výsledek vyplňování:'}
+              </h3>
+              <div className={`text-sm ${fillResult.dry_run ? 'text-blue-800' : 'text-green-800'}`}>
+                <p>Měsíc: {fillResult.month}</p>
+                <p>Celkem řádků: {fillResult.total_rows}</p>
+                {fillResult.dry_run ? (
+                  <p>Připraveno aktualizací: {fillResult.updates_prepared}</p>
+                ) : (
+                  <>
+                    <p>Úspěšně vyplněno: {fillResult.successful}</p>
+                    <p>Chyby: {fillResult.failed}</p>
+                  </>
+                )}
+                {fillResult.dry_run && (
+                  <p className="mt-2 font-semibold text-orange-700">
+                    ⚠️ DRY RUN MODE - Data nebyla odeslána na web
+                  </p>
+                )}
+                {!fillResult.dry_run && fillResult.successful > 0 && (
+                  <p className="mt-2 font-semibold text-green-700">
+                    ✅ Data byla úspěšně vyplněna. Nyní zkontrolujte na webu a klikněte "Uzavřít měsíc" ručně.
+                  </p>
+                )}
+              </div>
+            </div>
+          )}
+        </div>
+      )}
+      </div>
+    </div>
+  )
+}

frontend/app/components/JourneyForm.tsx

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+'use client'
+
+import { useState } from 'react'
+import API_URL from '@/lib/api'
+
+interface JourneyFormProps {
+  onDataCalculated: (data: any) => void
+  setLoading: (loading: boolean) => void
+  onFormDataChange: (formData: any) => void
+}
+
+export default function JourneyForm({ onDataCalculated, setLoading, onFormDataChange }: JourneyFormProps) {
+  const [formData, setFormData] = useState({
+    username: '',
+    password: '',
+    startDate: new Date().toISOString().slice(0, 10),
+    endDate: new Date().toISOString().slice(0, 10),
+    startKm: '',
+    endKm: '',
+    vehicleRegistration: '4SH1148',
+    variance: '0.1'
+  })
+
+  const [error, setError] = useState('')
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault()
+    setError('')
+    setLoading(true)
+
+    try {
+      const response = await fetch(`${API_URL}/api/calculate`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          username: formData.username,
+          password: formData.password,
+          start_date: formData.startDate,
+          end_date: formData.endDate,
+          start_km: parseInt(formData.startKm),
+          end_km: parseInt(formData.endKm),
+          vehicle_registration: formData.vehicleRegistration,
+          variance: parseFloat(formData.variance)
+        }),
+      })
+
+      if (!response.ok) {
+        const errorData = await response.json()
+        throw new Error(errorData.detail || 'Chyba při zpracování dat')
+      }
+
+      const data = await response.json()
+      onDataCalculated(data)
+      onFormDataChange(formData)
+    } catch (err: any) {
+      setError(err.message)
+      onDataCalculated(null)
+      onFormDataChange(null)
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  const handleExport = async () => {
+    setLoading(true)
+    try {
+      const response = await fetch(`${API_URL}/api/export/excel`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          username: formData.username,
+          password: formData.password,
+          start_date: formData.startDate,
+          end_date: formData.endDate,
+          start_km: parseInt(formData.startKm),
+          end_km: parseInt(formData.endKm),
+          vehicle_registration: formData.vehicleRegistration,
+          variance: parseFloat(formData.variance)
+        }),
+      })
+
+      if (!response.ok) throw new Error('Export failed')
+
+      const blob = await response.blob()
+      const url = window.URL.createObjectURL(blob)
+      const a = document.createElement('a')
+      a.href = url
+      a.download = `journeybook_${formData.startDate}_${formData.endDate}.xlsx`
+      a.click()
+    } catch (err: any) {
+      setError(err.message)
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  return (
+    <div className="bg-white/98 backdrop-blur-lg rounded-3xl shadow-2xl overflow-hidden border border-white/30">
+      <div className="bg-gradient-to-r from-blue-50 to-blue-100 px-8 py-6 border-b border-blue-200">
+        <div className="flex items-center gap-4">
+          <div className="w-12 h-12 bg-gradient-to-br from-blue-500 to-blue-600 rounded-xl flex items-center justify-center shadow-lg">
+            <svg className="w-7 h-7 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" />
+            </svg>
+          </div>
+          <h2 className="text-3xl font-bold text-gray-800">Vstupní údaje</h2>
+        </div>
+      </div>
+      <div className="p-8">
+
+      <form onSubmit={handleSubmit} className="space-y-5">
+        <div>
+          <label className="block text-sm font-medium text-gray-700 mb-1">
+            Uživatelské jméno
+          </label>
+          <input
+            type="text"
+            required
+            value={formData.username}
+            onChange={(e) => setFormData({ ...formData, username: e.target.value })}
+            className="w-full px-4 py-3 bg-gray-50 border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
+            placeholder="Zadejte uživatelské jméno"
+          />
+        </div>
+
+        <div>
+          <label className="block text-sm font-medium text-gray-700 mb-1">
+            Heslo
+          </label>
+          <input
+            type="password"
+            required
+            value={formData.password}
+            onChange={(e) => setFormData({ ...formData, password: e.target.value })}
+            className="w-full px-4 py-3 bg-gray-50 border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
+            placeholder="Zadejte heslo"
+          />
+        </div>
+
+        <div className="grid grid-cols-2 gap-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">
+              Datum od
+            </label>
+            <input
+              type="date"
+              required
+              value={formData.startDate}
+              onChange={(e) => setFormData({ ...formData, startDate: e.target.value })}
+              className="w-full px-4 py-3 bg-gray-50 border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
+            />
+          </div>
+
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">
+              Datum do
+            </label>
+            <input
+              type="date"
+              required
+              value={formData.endDate}
+              onChange={(e) => setFormData({ ...formData, endDate: e.target.value })}
+              className="w-full px-4 py-3 bg-gray-50 border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
+            />
+          </div>
+        </div>
+
+        <div className="grid grid-cols-2 gap-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">
+              Počáteční stav [km]
+            </label>
+            <input
+              type="number"
+              required
+              value={formData.startKm}
+              onChange={(e) => setFormData({ ...formData, startKm: e.target.value })}
+              className="w-full px-4 py-3 bg-gray-50 border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
+            />
+          </div>
+
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">
+              Koncový stav [km]
+            </label>
+            <input
+              type="number"
+              required
+              value={formData.endKm}
+              onChange={(e) => setFormData({ ...formData, endKm: e.target.value })}
+              className="w-full px-4 py-3 bg-gray-50 border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
+            />
+          </div>
+        </div>
+
+        <div>
+          <label className="block text-sm font-medium text-gray-700 mb-1">
+            SPZ vozidla
+          </label>
+          <input
+            type="text"
+            value={formData.vehicleRegistration}
+            onChange={(e) => setFormData({ ...formData, vehicleRegistration: e.target.value })}
+            className="w-full px-4 py-3 bg-gray-50 border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
+          />
+        </div>
+
+        <div>
+          <label className="block text-sm font-medium text-gray-700 mb-1">
+            Variance (0-1)
+          </label>
+          <input
+            type="number"
+            step="0.01"
+            min="0"
+            max="1"
+            value={formData.variance}
+            onChange={(e) => setFormData({ ...formData, variance: e.target.value })}
+            className="w-full px-4 py-3 bg-gray-50 border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
+          />
+          <p className="text-xs text-gray-500 mt-1">
+            Náhodná variace rozdělení kilometrů (doporučeno 0.1 = 10%)
+          </p>
+        </div>
+
+        {error && (
+          <div className="bg-red-50 border-l-4 border-red-500 text-red-700 px-4 py-3 rounded-lg shadow-md flex items-start gap-3">
+            <svg className="w-5 h-5 flex-shrink-0 mt-0.5" fill="currentColor" viewBox="0 0 20 20">
+              <path fillRule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clipRule="evenodd" />
+            </svg>
+            <span>{error}</span>
+          </div>
+        )}
+
+        <div className="flex flex-col sm:flex-row gap-4 pt-6">
+          <button
+            type="submit"
+            className="flex-1 bg-gradient-to-r from-blue-600 to-blue-700 hover:from-blue-700 hover:to-blue-800 text-white font-bold py-4 px-6 rounded-xl shadow-lg hover:shadow-2xl transform hover:-translate-y-1 transition-all duration-200"
+          >
+            <span className="flex items-center justify-center gap-3">
+              <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 7h6m0 10v-3m-3 3h.01M9 17h.01M9 14h.01M12 14h.01M15 11h.01M12 11h.01M9 11h.01M7 21h10a2 2 0 002-2V5a2 2 0 00-2-2H7a2 2 0 00-2 2v14a2 2 0 002 2z" />
+              </svg>
+              <span className="text-lg">Vypočítat</span>
+            </span>
+          </button>
+
+          <button
+            type="button"
+            onClick={handleExport}
+            className="flex-1 bg-gradient-to-r from-green-600 to-green-700 hover:from-green-700 hover:to-green-800 text-white font-bold py-4 px-6 rounded-xl shadow-lg hover:shadow-2xl transform hover:-translate-y-1 transition-all duration-200"
+          >
+            <span className="flex items-center justify-center gap-3">
+              <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 10v6m0 0l-3-3m3 3l3-3m2 8H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z" />
+              </svg>
+              <span className="text-lg">Export Excel</span>
+            </span>
+          </button>
+        </div>
+      </form>
+      </div>
+    </div>
+  )
+}

frontend/app/globals.css

@@ -0,0 +1,20 @@
+@import "tailwindcss";
+
+@theme {
+  --color-primary: #2563eb;
+  --color-primary-dark: #1d4ed8;
+  --radius-card: 12px;
+}
+
+* {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+body {
+  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  min-height: 100vh;
+  color: #1f2937;
+}

frontend/app/layout.tsx

@@ -0,0 +1,19 @@
+import type { Metadata } from 'next'
+import './globals.css'
+
+export const metadata: Metadata = {
+  title: 'Kniha Jízd',
+  description: 'Journey Book Management System',
+}
+
+export default function RootLayout({
+  children,
+}: {
+  children: React.ReactNode
+}) {
+  return (
+    <html lang="cs">
+      <body>{children}</body>
+    </html>
+  )
+}

frontend/app/page.tsx

@@ -0,0 +1,40 @@
+'use client'
+
+import { useState } from 'react'
+import JourneyForm from './components/JourneyForm'
+import DataPreview from './components/DataPreview'
+
+export default function Home() {
+  const [calculatedData, setCalculatedData] = useState(null)
+  const [loading, setLoading] = useState(false)
+  const [formData, setFormData] = useState(null)
+
+  return (
+    <main className="min-h-screen p-4 md:p-8 flex flex-col items-center justify-center">
+      <div className="max-w-7xl w-full my-auto">
+        <div className="text-center mb-10">
+          <div className="inline-flex items-center justify-center w-20 h-20 bg-white rounded-full shadow-2xl mb-6">
+            <svg className="w-10 h-10 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z" />
+            </svg>
+          </div>
+          <h1 className="text-5xl md:text-6xl font-bold text-white mb-4 drop-shadow-2xl">
+            Kniha Jízd
+          </h1>
+          <p className="text-xl md:text-2xl text-white/95 font-medium drop-shadow-lg">
+            Automatizovaný systém pro správu knihy jízd
+          </p>
+        </div>
+
+        <div className="grid grid-cols-1 xl:grid-cols-2 gap-6">
+          <JourneyForm
+            onDataCalculated={setCalculatedData}
+            setLoading={setLoading}
+            onFormDataChange={setFormData}
+          />
+          <DataPreview data={calculatedData} loading={loading} formData={formData} />
+        </div>
+      </div>
+    </main>
+  )
+}

frontend/lib/api.ts

@@ -0,0 +1,22 @@
+const API_URL = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:8000'
+
+export const apiClient = {
+  async post(endpoint: string, data: any) {
+    const response = await fetch(`${API_URL}${endpoint}`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(data),
+    })
+
+    if (!response.ok) {
+      const errorData = await response.json()
+      throw new Error(errorData.detail || 'Request failed')
+    }
+
+    return response
+  }
+}
+
+export default API_URL

frontend/next-env.d.ts

@@ -0,0 +1,6 @@
+/// <reference types="next" />
+/// <reference types="next/image-types/global" />
+/// <reference path="./.next/types/routes.d.ts" />
+
+// NOTE: This file should not be edited
+// see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

frontend/next.config.js

@@ -0,0 +1,8 @@
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  experimental: {
+    allowedDevOrigins: ['http://100.110.142.68:3000']
+  }
+}
+
+module.exports = nextConfig

frontend/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "frontend",
+  "version": "1.0.0",
+  "main": "index.js",
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "@tailwindcss/postcss": "^4.1.14",
+    "@types/node": "^24.7.1",
+    "@types/react": "^19.2.2",
+    "autoprefixer": "^10.4.21",
+    "next": "^15.5.4",
+    "postcss": "^8.5.6",
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0",
+    "tailwindcss": "^4.1.14",
+    "typescript": "^5.9.3"
+  }
+}

frontend/postcss.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  plugins: {
+    '@tailwindcss/postcss': {},
+  },
+}

frontend/tailwind.config.js

@@ -0,0 +1,12 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: [
+    './pages/**/*.{js,ts,jsx,tsx,mdx}',
+    './components/**/*.{js,ts,jsx,tsx,mdx}',
+    './app/**/*.{js,ts,jsx,tsx,mdx}',
+  ],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}

frontend/tsconfig.json

@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "target": "ES2017",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "preserve",
+    "incremental": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "paths": {
+      "@/*": ["./*"]
+    }
+  },
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
+  "exclude": ["node_modules"]
+}