import { useState, useMemo, memo, useCallback } from 'react'
import { BarChart3 } from 'lucide-react'
import { LineChart, Panel } from '@/components/Charts'
import { TimeRangeSelector } from './TimeRangeSelector'
import { DataGap, detectDataGaps, normalizeTelemetryData } from '@/features/daily-report/utils'
import { TelemetryDto } from '@/lib/api'
import { EmptyState } from '@/components/common'
import { useTelemetryCharts } from '@/features/daily-report/hooks/useTelemetryCharts'

type ChartsTabProps = {
    sortedTelemetry: TelemetryDto[]
    dataGaps?: DataGap[]
}

export const ChartsTab = memo(function ChartsTab({
    sortedTelemetry,
    dataGaps = [],
}: ChartsTabProps) {
    const [chartStartMinute, setChartStartMinute] = useState(0)
    const [chartEndMinute, setChartEndMinute] = useState(1439)

    const handleStartMinuteChange = useCallback((minute: number) => {
        setChartStartMinute(minute)
    }, [])

    const handleEndMinuteChange = useCallback((minute: number) => {
        setChartEndMinute(minute)
    }, [])

    // Normalize telemetry data
    const normalizedTelemetry = useMemo(
        () => normalizeTelemetryData(sortedTelemetry),
        [sortedTelemetry]
    )

    // Filter by time range
    const filteredTelemetry = useMemo(() => {
        return normalizedTelemetry.filter(
            t => t.minute >= chartStartMinute && t.minute <= chartEndMinute
        )
    }, [normalizedTelemetry, chartStartMinute, chartEndMinute])

    // Detect data gaps in filtered data
    const timestamps = useMemo(
        () => filteredTelemetry.map(t => t.timestamp),
        [filteredTelemetry]
    )

    const filteredDataGaps = useMemo(
        () => detectDataGaps(timestamps, 30),
        [timestamps]
    )

    // Build charts using custom hook
    const { charts, chartLabels } = useTelemetryCharts({
        filteredTelemetry,
        filteredDataGaps,
    })

    return (
        <div className="space-y-6">
            <TimeRangeSelector
                startMinute={chartStartMinute}
                endMinute={chartEndMinute}
                onStartMinuteChange={handleStartMinuteChange}
                onEndMinuteChange={handleEndMinuteChange}
                totalRecords={filteredTelemetry.length}
                dataGaps={dataGaps}
            />

            {filteredTelemetry.length === 0 ? (
                <EmptyState
                    icon={BarChart3}
                    title="داده‌ای موجود نیست"
                    message="داده‌ای برای این بازه زمانی موجود نیست"
                />
            ) : (
                <div className="grid gap-6 md:grid-cols-2">
                    {charts.map(chart => (
                        <Panel key={chart.key} title={chart.title} id={`chart-${chart.key}`}>
                            <LineChart
                                labels={chartLabels}
                                series={[
                                    {
                                        label: chart.seriesLabel,
                                        data: chart.data,
                                        borderColor: chart.color,
                                        backgroundColor: chart.bgColor,
                                        fill: true,
                                    },
                                ]}
                                yAxisMin={chart.yAxisMin}
                                yAxisMax={chart.yAxisMax}
                            />
                        </Panel>
                    ))}
                </div>
            )}
        </div>
    )
}, (prevProps, nextProps) => {
    // Custom comparison for better performance
    return prevProps.sortedTelemetry.length === nextProps.sortedTelemetry.length &&
           (prevProps.dataGaps?.length ?? 0) === (nextProps.dataGaps?.length ?? 0) &&
           prevProps.sortedTelemetry[0]?.id === nextProps.sortedTelemetry[0]?.id
})