feat: 3D-Statistik Tool mit Haushaltsbuch, Diagrammen und Ausgaben-Tracker

frontend/src/tools/statistik.jsx

@@ -0,0 +1,331 @@
+import { useState, useEffect, useCallback } from 'react';
+import { BarChart, Bar, LineChart, Line, XAxis, YAxis, Tooltip, ResponsiveContainer, Cell, PieChart, Pie, Legend } from 'recharts';
+
+const api = (path, opts={}) => {
+  const token = localStorage.getItem('sk_token');
+  return fetch('/api' + path, {
+    headers: { 'Content-Type':'application/json', ...(token?{'Authorization':'Bearer '+token}:{}) },
+    ...(opts.body ? { method: opts.method||'POST', body: JSON.stringify(opts.body) } : { method: opts.method||'GET' }),
+  }).then(r => r.json());
+};
+
+const S = {
+  card:  { background:'rgba(255,255,255,0.03)', border:'1px solid rgba(255,255,255,0.07)', borderRadius:12, padding:'16px 18px', marginBottom:12 },
+  head:  { color:'rgba(255,255,255,0.4)', fontFamily:'monospace', fontSize:10, letterSpacing:1, marginBottom:10, fontWeight:700 },
+  val:   (c='#fff') => ({ color:c, fontFamily:"'Space Mono',monospace", fontSize:22, fontWeight:700 }),
+  sub:   { color:'rgba(255,255,255,0.3)', fontFamily:'monospace', fontSize:10 },
+  inp:   { background:'rgba(255,255,255,0.06)', border:'1px solid rgba(255,255,255,0.12)', borderRadius:8, padding:'8px 12px', color:'#fff', fontFamily:'monospace', fontSize:12, outline:'none', width:'100%', boxSizing:'border-box' },
+  btn:   (c='#4ecdc4') => ({ background:`${c}18`, border:`1px solid ${c}44`, borderRadius:8, padding:'8px 14px', color:c, fontFamily:'monospace', fontSize:11, cursor:'pointer' }),
+};
+
+const CATS = ['Filament','Zubehör','Ersatzteile','Werkzeug','Sonstiges'];
+const CAT_COLORS = { Filament:'#4ecdc4', Zubehör:'#ffe66d', Ersatzteile:'#ff6b9d', Werkzeug:'#60a5fa', Sonstiges:'#c084fc' };
+
+const fmt = v => `${(v||0).toFixed(2)} €`;
+const fmtMonth = m => { if (!m) return ''; const [y,mo] = m.split('-'); return ['Jan','Feb','Mär','Apr','Mai','Jun','Jul','Aug','Sep','Okt','Nov','Dez'][parseInt(mo)-1]+' '+y.slice(2); };
+
+const PERIODS = [
+  { id:'week',  label:'Woche' },
+  { id:'month', label:'Monat' },
+  { id:'year',  label:'Jahr'  },
+  { id:'all',   label:'Gesamt'},
+];
+
+function periodRange(id) {
+  const now = new Date();
+  const pad = n => String(n).padStart(2,'0');
+  const iso = d => `${d.getFullYear()}-${pad(d.getMonth()+1)}-${pad(d.getDate())}`;
+  if (id==='week')  { const d=new Date(now); d.setDate(d.getDate()-6); return { from:iso(d), to:iso(now) }; }
+  if (id==='month') { const d=new Date(now.getFullYear(),now.getMonth(),1); return { from:iso(d), to:iso(now) }; }
+  if (id==='year')  { return { from:`${now.getFullYear()}-01-01`, to:iso(now) }; }
+  return {};
+}
+
+function KPI({ label, value, color, sub }) {
+  return (
+    <div style={{flex:1,minWidth:130}}>
+      <div style={S.sub}>{label}</div>
+      <div style={S.val(color)}>{value}</div>
+      {sub && <div style={{...S.sub,marginTop:2}}>{sub}</div>}
+    </div>
+  );
+}
+
+export default function Statistik({ mobile }) {
+  const [period, setPeriod]     = useState('month');
+  const [data,   setData]       = useState(null);
+  const [loading,setLoading]    = useState(false);
+  const [tab,    setTab]        = useState('overview'); // overview | expenses | orders
+  const [expForm,setExpForm]    = useState({ date: new Date().toISOString().slice(0,10), category:'Filament', description:'', amount:'' });
+  const [saving, setSaving]     = useState(false);
+
+  const load = useCallback(() => {
+    setLoading(true);
+    const { from, to } = periodRange(period);
+    const q = from ? `?from=${from}&to=${to}` : '';
+    api('/tools/statistik/overview'+q)
+      .then(d => setData(d))
+      .catch(()=>{})
+      .finally(()=>setLoading(false));
+  }, [period]);
+
+  useEffect(() => { load(); }, [load]);
+
+  async function addExpense() {
+    if (!expForm.description || !expForm.amount) return;
+    setSaving(true);
+    try {
+      await api('/tools/statistik/expenses', { body: expForm });
+      setExpForm(p => ({ ...p, description:'', amount:'' }));
+      load();
+    } finally { setSaving(false); }
+  }
+
+  async function delExpense(id) {
+    await api(`/tools/statistik/expenses/${id}`, { method:'DELETE' });
+    load();
+  }
+
+  const netColor = (data?.netProfit||0) >= 0 ? '#4ade80' : '#f87171';
+
+  return (
+    <div style={{ padding: mobile?'14px 14px 90px':'28px 36px', maxWidth:900 }}>
+
+      {/* ── Header ── */}
+      <div style={{display:'flex',alignItems:'center',justifyContent:'space-between',marginBottom:20,flexWrap:'wrap',gap:10}}>
+        <h2 style={{color:'#fff',fontFamily:'monospace',fontSize:18,fontWeight:700,margin:0}}>
+          📊 3D-Druck Statistik
+        </h2>
+        {/* Zeitraum */}
+        <div style={{display:'flex',gap:4}}>
+          {PERIODS.map(p => (
+            <button key={p.id} onClick={()=>setPeriod(p.id)} style={{
+              background: period===p.id ? 'rgba(78,205,196,0.15)' : 'rgba(255,255,255,0.04)',
+              border: `1px solid ${period===p.id ? 'rgba(78,205,196,0.5)' : 'rgba(255,255,255,0.1)'}`,
+              borderRadius:8, padding:'5px 12px',
+              color: period===p.id ? '#4ecdc4' : 'rgba(255,255,255,0.4)',
+              fontFamily:'monospace', fontSize:11, cursor:'pointer',
+            }}>{p.label}</button>
+          ))}
+        </div>
+      </div>
+
+      {/* ── Tabs ── */}
+      <div style={{display:'flex',gap:4,marginBottom:16}}>
+        {[['overview','📈 Übersicht'],['expenses','💸 Ausgaben'],['orders','📦 Bestellungen']].map(([id,label])=>(
+          <button key={id} onClick={()=>setTab(id)} style={{
+            background: tab===id ? 'rgba(255,255,255,0.08)' : 'transparent',
+            border: `1px solid ${tab===id ? 'rgba(255,255,255,0.2)' : 'rgba(255,255,255,0.08)'}`,
+            borderRadius:8, padding:'6px 14px',
+            color: tab===id ? '#fff' : 'rgba(255,255,255,0.4)',
+            fontFamily:'monospace', fontSize:11, cursor:'pointer',
+          }}>{label}</button>
+        ))}
+      </div>
+
+      {loading && <div style={{color:'rgba(255,255,255,0.3)',fontFamily:'monospace',fontSize:12}}>Lädt…</div>}
+
+      {/* ══ ÜBERSICHT ══ */}
+      {tab==='overview' && data && (
+        <>
+          {/* KPI Kacheln */}
+          <div style={{...S.card}}>
+            <div style={S.head}>EINNAHMEN & GEWINN</div>
+            <div style={{display:'flex',flexWrap:'wrap',gap:20,marginBottom:16}}>
+              <KPI label="Eingenommen" value={fmt(data.totalRevenue)} color="#4ade80" sub="bezahlt"/>
+              <KPI label="Offen" value={fmt(data.openRevenue)} color="#ffe66d" sub="in Arbeit/Fertig"/>
+              <KPI label="Materialkosten" value={fmt(data.totalBaseCost)} color="#f87171" sub="Selbstkosten"/>
+              <KPI label="Rohgewinn" value={fmt(data.totalProfit)} color="#60a5fa" sub="nach Materialkosten"/>
+            </div>
+            <div style={{borderTop:'1px solid rgba(255,255,255,0.06)',paddingTop:16,display:'flex',flexWrap:'wrap',gap:20}}>
+              <KPI label="Ausgaben" value={fmt(data.totalExpenses)} color="#f87171" sub="Einkäufe"/>
+              <KPI label="NETTOGEWINN" value={fmt(data.netProfit)} color={netColor} sub="Rohgewinn − Ausgaben"/>
+              <KPI label="Bestellungen" value={data.totalOrders} color="rgba(255,255,255,0.6)" sub="im Zeitraum"/>
+            </div>
+          </div>
+
+          {/* Status-Verteilung */}
+          <div style={{...S.card}}>
+            <div style={S.head}>BESTELLUNGEN NACH STATUS</div>
+            <div style={{display:'flex',flexWrap:'wrap',gap:8}}>
+              {[
+                ['Warteliste', data.byStatus.warteliste, '#ffe66d'],
+                ['In Arbeit',  data.byStatus.in_arbeit,  '#4ecdc4'],
+                ['Fertig',     data.byStatus.fertig,     '#6bcb77'],
+                ['Bezahlt',    data.byStatus.bezahlt,    '#c084fc'],
+                ['Abgeschlossen', data.byStatus.abgeschlossen, '#4ade80'],
+              ].map(([label, val, color]) => val > 0 && (
+                <div key={label} style={{background:`${color}12`,border:`1px solid ${color}33`,
+                  borderRadius:8,padding:'8px 14px',textAlign:'center'}}>
+                  <div style={{color,fontFamily:"'Space Mono',monospace",fontSize:18,fontWeight:700}}>{val}</div>
+                  <div style={{color:'rgba(255,255,255,0.4)',fontFamily:'monospace',fontSize:9}}>{label}</div>
+                </div>
+              ))}
+            </div>
+          </div>
+
+          {/* Balkendiagramm Einnahmen vs Ausgaben */}
+          {data.monthlyData.length > 0 && (
+            <div style={S.card}>
+              <div style={S.head}>EINNAHMEN VS. AUSGABEN (MONATLICH)</div>
+              <ResponsiveContainer width="100%" height={200}>
+                <BarChart data={data.monthlyData} margin={{top:0,right:0,bottom:0,left:0}}>
+                  <XAxis dataKey="month" tickFormatter={fmtMonth} tick={{fill:'rgba(255,255,255,0.3)',fontSize:10}} axisLine={false} tickLine={false}/>
+                  <YAxis tick={{fill:'rgba(255,255,255,0.3)',fontSize:10}} axisLine={false} tickLine={false} tickFormatter={v=>`${v}€`} width={45}/>
+                  <Tooltip contentStyle={{background:'#1a1d2e',border:'1px solid rgba(255,255,255,0.1)',borderRadius:8,fontFamily:'monospace',fontSize:11}}
+                    formatter={(v,n)=>[`${v.toFixed(2)} €`, n==='revenue'?'Einnahmen':'Ausgaben']}
+                    labelFormatter={fmtMonth}/>
+                  <Bar dataKey="revenue"  fill="#4ade80" radius={[4,4,0,0]} maxBarSize={28}/>
+                  <Bar dataKey="expenses" fill="#f87171" radius={[4,4,0,0]} maxBarSize={28}/>
+                </BarChart>
+              </ResponsiveContainer>
+            </div>
+          )}
+
+          {/* Kumulierter Gewinn + Ausgaben nach Kategorie */}
+          <div style={{display:'flex',gap:12,flexWrap:'wrap'}}>
+            {data.cumulativeData.length > 1 && (
+              <div style={{...S.card,flex:1,minWidth:200}}>
+                <div style={S.head}>KUMULIERTER NETTOGEWINN</div>
+                <ResponsiveContainer width="100%" height={160}>
+                  <LineChart data={data.cumulativeData} margin={{top:5,right:5,bottom:0,left:0}}>
+                    <XAxis dataKey="month" tickFormatter={fmtMonth} tick={{fill:'rgba(255,255,255,0.3)',fontSize:9}} axisLine={false} tickLine={false}/>
+                    <YAxis tick={{fill:'rgba(255,255,255,0.3)',fontSize:9}} axisLine={false} tickLine={false} tickFormatter={v=>`${v}€`} width={42}/>
+                    <Tooltip contentStyle={{background:'#1a1d2e',border:'1px solid rgba(255,255,255,0.1)',borderRadius:8,fontFamily:'monospace',fontSize:11}}
+                      formatter={v=>[`${v.toFixed(2)} €`, 'Gewinn kumuliert']} labelFormatter={fmtMonth}/>
+                    <Line type="monotone" dataKey="value" stroke="#4ecdc4" strokeWidth={2} dot={false}/>
+                  </LineChart>
+                </ResponsiveContainer>
+              </div>
+            )}
+            {Object.keys(data.byCategory).length > 0 && (
+              <div style={{...S.card,flex:1,minWidth:200}}>
+                <div style={S.head}>AUSGABEN NACH KATEGORIE</div>
+                <ResponsiveContainer width="100%" height={160}>
+                  <PieChart>
+                    <Pie data={Object.entries(data.byCategory).map(([name,value])=>({name,value}))}
+                      cx="50%" cy="50%" innerRadius={40} outerRadius={65}
+                      dataKey="value" paddingAngle={3}>
+                      {Object.entries(data.byCategory).map(([name],i)=>(
+                        <Cell key={name} fill={CAT_COLORS[name]||'#888'}/>
+                      ))}
+                    </Pie>
+                    <Tooltip contentStyle={{background:'#1a1d2e',border:'1px solid rgba(255,255,255,0.1)',borderRadius:8,fontFamily:'monospace',fontSize:11}}
+                      formatter={v=>[`${v.toFixed(2)} €`]}/>
+                    <Legend iconType="circle" iconSize={8}
+                      formatter={v=><span style={{color:'rgba(255,255,255,0.5)',fontFamily:'monospace',fontSize:9}}>{v}</span>}/>
+                  </PieChart>
+                </ResponsiveContainer>
+              </div>
+            )}
+          </div>
+        </>
+      )}
+
+      {/* ══ AUSGABEN ══ */}
+      {tab==='expenses' && (
+        <>
+          {/* Formular */}
+          <div style={S.card}>
+            <div style={S.head}>NEUE AUSGABE</div>
+            <div style={{display:'flex',gap:8,flexWrap:'wrap'}}>
+              <input type="date" value={expForm.date}
+                onChange={e=>setExpForm(p=>({...p,date:e.target.value}))}
+                style={{...S.inp,width:140}}/>
+              <select value={expForm.category}
+                onChange={e=>setExpForm(p=>({...p,category:e.target.value}))}
+                style={{...S.inp,width:130}}>
+                {CATS.map(c=><option key={c}>{c}</option>)}
+              </select>
+              <input placeholder="Beschreibung" value={expForm.description}
+                onChange={e=>setExpForm(p=>({...p,description:e.target.value}))}
+                style={{...S.inp,flex:1,minWidth:140}}/>
+              <input type="number" placeholder="0.00" step="0.01" min="0" value={expForm.amount}
+                onChange={e=>setExpForm(p=>({...p,amount:e.target.value}))}
+                onKeyDown={e=>e.key==='Enter'&&addExpense()}
+                style={{...S.inp,width:90,textAlign:'right'}}/>
+              <button onClick={addExpense} disabled={saving}
+                style={{...S.btn('#4ade80'),opacity:saving?0.5:1,whiteSpace:'nowrap'}}>
+                {saving?'…':'+ Hinzufügen'}
+              </button>
+            </div>
+          </div>
+
+          {/* Liste */}
+          <div style={S.card}>
+            <div style={S.head}>AUSGABEN {period!=='all'&&`(${PERIODS.find(p=>p.id===period)?.label?.toUpperCase()})`}</div>
+            {!data?.expenses?.length
+              ? <div style={{color:'rgba(255,255,255,0.3)',fontFamily:'monospace',fontSize:12}}>Keine Ausgaben im gewählten Zeitraum.</div>
+              : data.expenses.map(e => (
+                <div key={e.id} style={{display:'flex',alignItems:'center',gap:10,padding:'8px 0',
+                  borderBottom:'1px solid rgba(255,255,255,0.05)'}}>
+                  <span style={{color:'rgba(255,255,255,0.3)',fontFamily:'monospace',fontSize:10,flexShrink:0,width:80}}>
+                    {e.date}
+                  </span>
+                  <span style={{background:`${CAT_COLORS[e.category]||'#888'}18`,
+                    border:`1px solid ${CAT_COLORS[e.category]||'#888'}44`,
+                    borderRadius:6,padding:'2px 8px',color:CAT_COLORS[e.category]||'#888',
+                    fontFamily:'monospace',fontSize:9,flexShrink:0}}>
+                    {e.category}
+                  </span>
+                  <span style={{color:'rgba(255,255,255,0.7)',fontFamily:'monospace',fontSize:12,flex:1}}>
+                    {e.description}
+                  </span>
+                  <span style={{color:'#f87171',fontFamily:"'Space Mono',monospace",fontSize:13,fontWeight:700,flexShrink:0}}>
+                    {fmt(e.amount)}
+                  </span>
+                  <button onClick={()=>delExpense(e.id)}
+                    style={{background:'rgba(248,113,113,0.1)',border:'1px solid rgba(248,113,113,0.2)',
+                      borderRadius:6,padding:'3px 8px',color:'#f87171',fontFamily:'monospace',fontSize:10,cursor:'pointer',flexShrink:0}}>
+                    ✕
+                  </button>
+                </div>
+              ))
+            }
+            {data?.expenses?.length > 0 && (
+              <div style={{display:'flex',justifyContent:'flex-end',paddingTop:10}}>
+                <span style={{color:'#f87171',fontFamily:"'Space Mono',monospace",fontSize:14,fontWeight:700}}>
+                  Σ {fmt(data.totalExpenses)}
+                </span>
+              </div>
+            )}
+          </div>
+        </>
+      )}
+
+      {/* ══ BESTELLUNGEN ══ */}
+      {tab==='orders' && data && (
+        <div style={S.card}>
+          <div style={S.head}>BESTELLUNGEN IM ZEITRAUM ({data.recentOrders.length})</div>
+          {!data.recentOrders.length
+            ? <div style={{color:'rgba(255,255,255,0.3)',fontFamily:'monospace',fontSize:12}}>Keine Bestellungen im gewählten Zeitraum.</div>
+            : data.recentOrders.map(o => {
+              const statusColor = { warteliste:'#ffe66d', in_arbeit:'#4ecdc4', fertig:'#6bcb77', bezahlt:'#c084fc' };
+              const st = !!o.bezahlt && !!o.abgeholt ? 'abgeschlossen' : !!o.bezahlt ? 'bezahlt' : o.status;
+              const col = st==='abgeschlossen' ? '#4ade80' : statusColor[st] || '#888';
+              return (
+                <div key={o.id} style={{display:'flex',alignItems:'center',gap:10,padding:'8px 0',
+                  borderBottom:'1px solid rgba(255,255,255,0.05)',flexWrap:'wrap'}}>
+                  <span style={{color:'rgba(255,255,255,0.3)',fontFamily:'monospace',fontSize:10,flexShrink:0}}>
+                    {new Date(o.created_at).toLocaleDateString('de-DE')}
+                  </span>
+                  <span style={{color:'rgba(255,255,255,0.8)',fontFamily:'monospace',fontSize:12,flex:1}}>
+                    {o.name}
+                  </span>
+                  <span style={{background:`${col}18`,border:`1px solid ${col}44`,borderRadius:6,
+                    padding:'2px 8px',color:col,fontFamily:'monospace',fontSize:9,flexShrink:0}}>
+                    {st}
+                  </span>
+                  <span style={{color:o.revenue>0?'#4ade80':'rgba(255,255,255,0.3)',
+                    fontFamily:"'Space Mono',monospace",fontSize:12,fontWeight:700,flexShrink:0}}>
+                    {fmt(o.revenue||0)}
+                  </span>
+                </div>
+              );
+            })
+          }
+        </div>
+      )}
+    </div>
+  );
+}