"use client"

import * as React from "react"
import { Area, AreaChart, CartesianGrid, XAxis } from "recharts"

import { useQuery } from "convex/react"
import { api } from "@/convex/_generated/api"
import type { Id } from "@/convex/_generated/dataModel"
import { useAuth } from "@/lib/auth-client"
import { DEFAULT_TENANT_ID } from "@/lib/constants"
import { useIsMobile } from "@/hooks/use-mobile"
import {
  Card,
  CardAction,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  ChartConfig,
  ChartContainer,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"
import { Skeleton } from "@/components/ui/skeleton"
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select"
import {
  ToggleGroup,
  ToggleGroupItem,
} from "@/components/ui/toggle-group"

export const description = "Distribuição semanal de tickets por canal"

export function ChartAreaInteractive() {
  const [mounted, setMounted] = React.useState(false)
  const isMobile = useIsMobile()
  const [timeRange, setTimeRange] = React.useState("7d")
  const { session, convexUserId } = useAuth()
  const tenantId = session?.user.tenantId ?? DEFAULT_TENANT_ID

  React.useEffect(() => {
    setMounted(true)
  }, [])

  React.useEffect(() => {
    if (isMobile) {
      setTimeRange("7d")
    }
  }, [isMobile])

  const report = useQuery(
    api.reports.ticketsByChannel,
    convexUserId
      ? ({ tenantId, viewerId: convexUserId as Id<"users">, range: timeRange })
      : "skip"
  )

  const channels = React.useMemo(() => report?.channels ?? [], [report])

  const palette = React.useMemo(
    () => [
      "var(--chart-1)",
      "var(--chart-2)",
      "var(--chart-3)",
      "var(--chart-4)",
      "var(--chart-5)",
    ],
    []
  )

  const chartConfig = React.useMemo(() => {
    const entries = channels.map((channel: string, index: number) => [
      channel,
      {
        label: channel
          .toLowerCase()
          .replace(/_/g, " ")
          .replace(/\b\w/g, (letter) => letter.toUpperCase()),
        color: palette[index % palette.length],
      },
    ])
    return Object.fromEntries(entries) as ChartConfig
  }, [channels, palette])

  const chartData = React.useMemo(() => {
    if (!report?.points) return []
    return report.points.map((point: { date: string; values: Record<string, number> }) => {
      const entry: Record<string, number | string> = { date: point.date }
      for (const channel of channels) {
        entry[channel] = point.values[channel] ?? 0
      }
      return entry
    })
  }, [channels, report])

  if (!mounted) {
    return (
      <div className="flex h-[250px] items-center justify-center rounded-xl border border-dashed border-border/60 text-sm text-muted-foreground">
        Carregando gráfico...
      </div>
    )
  }

  return (
    <Card className="@container/card">
      <CardHeader>
        <CardTitle>Entrada de tickets por canal</CardTitle>
        <CardDescription>
          <span className="hidden @[540px]/card:block">
            Distribuição dos canais nos últimos {timeRange.replace("d", " dias")}
          </span>
          <span className="@[540px]/card:hidden">Período: {timeRange}</span>
        </CardDescription>
        <CardAction>
          <ToggleGroup
            type="single"
            value={timeRange}
            onValueChange={setTimeRange}
            variant="outline"
            className="hidden *:data-[slot=toggle-group-item]:!px-4 @[767px]/card:flex"
          >
            <ToggleGroupItem value="90d">90 dias</ToggleGroupItem>
            <ToggleGroupItem value="30d">30 dias</ToggleGroupItem>
            <ToggleGroupItem value="7d">7 dias</ToggleGroupItem>
          </ToggleGroup>
          <Select value={timeRange} onValueChange={setTimeRange}>
            <SelectTrigger
              className="flex w-40 **:data-[slot=select-value]:block **:data-[slot=select-value]:truncate @[767px]/card:hidden"
              size="sm"
              aria-label="Selecionar período"
            >
              <SelectValue placeholder="Selecionar período" />
            </SelectTrigger>
            <SelectContent className="rounded-xl">
              <SelectItem value="90d" className="rounded-lg">
                Últimos 90 dias
              </SelectItem>
              <SelectItem value="30d" className="rounded-lg">
                Últimos 30 dias
              </SelectItem>
              <SelectItem value="7d" className="rounded-lg">
                Últimos 7 dias
              </SelectItem>
            </SelectContent>
          </Select>
        </CardAction>
      </CardHeader>
      <CardContent className="px-2 pt-4 sm:px-6 sm:pt-6">
        {report === undefined ? (
          <div className="flex h-[250px] items-center justify-center">
            <Skeleton className="h-24 w-full" />
          </div>
        ) : chartData.length === 0 || channels.length === 0 ? (
          <div className="flex h-[250px] items-center justify-center rounded-xl border border-dashed border-border/60 text-sm text-muted-foreground">
            Sem dados suficientes no período selecionado.
          </div>
        ) : (
          <ChartContainer
            config={chartConfig}
            className="aspect-auto h-[250px] w-full"
          >
            <AreaChart data={chartData}>
              <defs>
                {channels.map((channel: string) => (
                  <linearGradient key={channel} id={`fill-${channel}`} x1="0" y1="0" x2="0" y2="1">
                    <stop
                      offset="5%"
                      stopColor={chartConfig[channel]?.color ?? "var(--chart-1)"}
                      stopOpacity={0.85}
                    />
                    <stop
                      offset="95%"
                      stopColor={chartConfig[channel]?.color ?? "var(--chart-1)"}
                      stopOpacity={0.1}
                    />
                  </linearGradient>
                ))}
              </defs>
              <CartesianGrid vertical={false} />
              <XAxis
                dataKey="date"
                tickLine={false}
                axisLine={false}
                tickMargin={8}
                minTickGap={32}
                tickFormatter={(value) => {
                  const date = new Date(value)
                  return date.toLocaleDateString("pt-BR", {
                    month: "short",
                    day: "2-digit",
                  })
                }}
              />
              <ChartTooltip
                cursor={false}
                content={
                  <ChartTooltipContent
                    labelFormatter={(value) =>
                      new Date(value).toLocaleDateString("pt-BR", {
                        day: "2-digit",
                        month: "long",
                      })
                    }
                    indicator="dot"
                  />
                }
              />
              {channels
                .slice()
                .reverse()
                .map((channel: string) => (
                  <Area
                    key={channel}
                    dataKey={channel}
                    type="natural"
                    fill={`url(#fill-${channel})`}
                    stroke={chartConfig[channel]?.color ?? "var(--chart-1)"}
                    strokeWidth={2}
                    stackId="a"
                    name={
                      typeof chartConfig[channel]?.label === "string"
                        ? (chartConfig[channel]?.label as string)
                        : channel
                    }
                  />
                ))}
            </AreaChart>
          </ChartContainer>
        )}
      </CardContent>
    </Card>
  )
}

export default ChartAreaInteractive