# Code coverage report for components/finance/FinanceDashboard.jsx

# All files / components/finance FinanceDashboard.jsx

88.88% Statements 24/27
83.33% Branches 15/18
78.57% Functions 11/14
86.95% Lines 20/23

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     import { useState, useEffect } from "react"
    import {
      PieChart, Pie, Cell, LineChart, Line, XAxis, YAxis, Tooltip, ResponsiveContainer,
    } from "recharts"
    import { financeApi } from "../../api/finance"

    const COLORS = [
      "#0D4F4F", "#F7B538", "#6366f1", "#22c55e", "#ef4444",
      "#8b5cf6", "#0ea5e9", "#f97316", "#ec4899", "#14b8a6",
      "#64748b", "#a855f7", "#78716c",
    ]

    const fmt = (n) => Number(n).toLocaleString("ru-RU") + " ₽"

    export default function FinanceDashboard({ month, year }) {
      const [summary, setSummary] = useState(null)
      const [loading, setLoading] = useState(true)

      useEffect(() => {
        setLoading(true)
        financeApi
          .getSummary({ month, year })
          .then(setSummary)
          .catch(console.error)
          .finally(() => setLoading(false))
      }, [month, year])

      if (loading) {
        return (
          <div className="space-y-4">
            {[1, 2, 3].map((i) => (
              <div key={i} className="card p-6 animate-pulse">
                <div className="h-8 bg-gray-200 dark:bg-gray-800 rounded w-1/2" />
              </div>
            ))}
          </div>
        )
      }

      if (!summary || (summary.total_income === 0 && summary.total_expense === 0 && (summary.carried_over || 0) === 0)) {
        return (
          <div className="card p-12 text-center">
            <span className="text-5xl block mb-4">📊</span>
            <h3 className="text-lg font-bold text-gray-900 dark:text-white mb-2">
              Нет данных
            </h3>
            <p className="text-gray-500 dark:text-gray-400">
              Добавьте первую транзакцию
            </p>
          </div>
        )
      }

      const expenseCategories = summary.by_category.filter((c) => c.type === "expense")
      const pieData = expenseCategories.map((c) => ({
        name: c.category_emoji + " " + c.category_name,
        value: c.amount,
      }))
      const dailyData = summary.daily.map((d) => ({
        day: d.date.slice(8, 10),
        amount: d.amount,
      }))

      return (
        <div className="space-y-6">
          <div className="card p-6 bg-gradient-to-br from-primary-950 to-primary-800 text-white">
            {summary.carried_over !== 0 && (
              <p className="text-xs opacity-60 mb-1">
                Остаток с прошлого месяца: <span className={summary.carried_over > 0 ? "text-green-300" : "text-red-300"}>{fmt(summary.carried_over)}</span>
              </p>
            )}
            <p className="text-sm opacity-70">Баланс</p>
            <p className="text-3xl font-bold mt-1">{fmt(summary.balance)}</p>
            <div className="flex gap-6 mt-4">
              <div>
                <p className="text-xs opacity-60">Доходы</p>
                <p className="text-lg font-semibold text-green-300">
                  +{fmt(summary.total_income)}
                </p>
              </div>
              <div>
                <p className="text-xs opacity-60">Расходы</p>
                <p className="text-lg font-semibold text-red-300">
                  -{fmt(summary.total_expense)}
                </p>
              </div>
            </div>
          </div>

          {expenseCategories.length > 0 && (
            <div className="card p-5">
              <h3 className="font-display font-bold text-gray-900 dark:text-white mb-4">
                Топ расходов
              </h3>
              <div className="space-y-3">
                {expenseCategories.slice(0, 5).map((c, i) => (
                  <div key={i} className="flex items-center gap-3">
                    <span className="text-xl w-8 text-center">
                      {c.category_emoji}
                    </span>
                    <div className="flex-1">
                      <div className="flex justify-between mb-1">
                        <span className="text-sm font-medium text-gray-700 dark:text-gray-300">
                          {c.category_name}
                        </span>
                        <span className="text-sm font-semibold text-gray-900 dark:text-white">
                          {fmt(c.amount)}
                        </span>
                      </div>
                      <div className="h-2 bg-gray-100 dark:bg-gray-800 rounded-full overflow-hidden">
                        <div
                          className="h-full rounded-full"
                          style={{
                            width: Math.round(c.percentage) + "%",
                            backgroundColor: COLORS[i % COLORS.length],
                          }}
                        />
                      </div>
                    </div>
                  </div>
                ))}
              </div>
            </div>
          )}

          {pieData.length > 0 && (
            <div className="card p-5">
              <h3 className="font-display font-bold text-gray-900 dark:text-white mb-4">
                По категориям
              </h3>
              <div className="flex items-center gap-4">
                <div className="w-40 h-40">
                  <ResponsiveContainer>
                    <PieChart>
                      <Pie
                        data={pieData}
                        innerRadius={40}
                        outerRadius={70}
                        dataKey="value"
                        stroke="none"
                      >
                        {pieData.map((_, i) => (
                          <Cell key={i} fill={COLORS[i % COLORS.length]} />
                        ))}
                      </Pie>
                      <Tooltip formatter={(v) => fmt(v)} />
                    </PieChart>
                  </ResponsiveContainer>
                </div>
                <div className="flex-1 space-y-1">
                  {pieData.slice(0, 6).map((c, i) => (
                    <div key={i} className="flex items-center gap-2 text-xs">
                      <div
                        className="w-2.5 h-2.5 rounded-full"
                        style={{ backgroundColor: COLORS[i] }}
                      />
                      <span className="text-gray-600 dark:text-gray-400 truncate">
                        {c.name}
                      </span>
                      <span className="ml-auto font-medium text-gray-900 dark:text-white">
                        {Math.round(
                          (c.value / summary.total_expense) * 100
                        )}
                        %
                      </span>
                    </div>
                  ))}
                </div>
              </div>
            </div>
          )}

          {dailyData.length > 0 && (
            <div className="card p-5">
              <h3 className="font-display font-bold text-gray-900 dark:text-white mb-4">
                Расходы по дням
              </h3>
              <div className="h-48">
                <ResponsiveContainer>
                  <LineChart data={dailyData}>
                    <XAxis dataKey="day" tick={{ fontSize: 12 }} stroke="#94a3b8" />
                    <YAxis
                      tick={{ fontSize: 10 }}
                      stroke="#94a3b8"
                      tickFormatter={(v) => v / 1000 + "к"}
                    />
                    <Tooltip formatter={(v) => fmt(v)} />
                    <Line
                      type="monotone"
                      dataKey="amount"
                      stroke="#0D4F4F"
                      strokeWidth={2}
                      dot={{ r: 4, fill: "#0D4F4F" }}
                    />
                  </LineChart>
                </ResponsiveContainer>
              </div>
            </div>
          )}
        </div>
      )
    }