<template>
        <FlightChart
            title="Flights per day of week"
            type="bar"
            height="220"
            :options="chartOptions"
            :series="series"
        />
</template>

<script setup lang="ts">
import { computed } from 'vue'
import type { Flight } from '@/Types/types'
import FlightChart from "@/Components/FlightsGoneBy/FlightChart.vue";

const props = defineProps<{
    flights: Flight[]
    upcomingFlights: Flight[]
}>()

const DAYS = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']

// JS getDay() is 0=Sun, 1=Mon ... 6=Sat — remap to Mon-first
const dayIndex = (f: Flight): number => {
    const date = new Date(f.departure_date)
    const localDay = new Intl.DateTimeFormat('en', {
        timeZone: f.departure_airport.timezone,
        weekday: 'long',
    }).format(date)
    const idx = DAYS.indexOf(localDay)
    return idx === -1 ? 0 : idx
}

const countByDay = (list: Flight[]) =>
    DAYS.map((_, i) => list.filter(f => dayIndex(f) === i).length)


const series = computed(() => [
    { name: 'Flown',    data: countByDay(props.flights) },
    { name: 'Upcoming', data: countByDay(props.upcomingFlights) },
])

const chartOptions = computed(() => ({
    chart: {
        type: 'bar',
        stacked: true,
        toolbar: { show: false },
        background: 'transparent',
        fontFamily: 'inherit',
    },
    theme: { mode: 'dark' },
    plotOptions: {
        bar: {
            borderRadius: 3,
            borderRadiusWhenStacked: 'last',
            columnWidth: '55%',
        },
    },
    colors: ['#4da6ff', '#ffc107'],
    dataLabels: { enabled: false },
    grid: {
        borderColor: 'rgba(255,255,255,0.05)',
        yaxis: { lines: { show: true } },
        xaxis: { lines: { show: false } },
    },
    xaxis: {
        categories: DAYS,
        axisBorder: { show: false },
        axisTicks: { show: false },
        labels: {
            style: { colors: '#445566', fontSize: '12px' },
        },
    },
    yaxis: {
        labels: {
            style: { colors: '#445566', fontSize: '12px' },
        },
    },
    legend: {
        position: 'top',
        horizontalAlign: 'right',
        labels: { colors: '#778899' },
        markers: { width: 8, height: 8, radius: 2 },
        itemMargin: { horizontal: 12 },
    },
    tooltip: {
        theme: 'dark',
        shared: true,
        intersect: false,
    },
    states: {
        hover: { filter: { type: 'lighten', value: 0.1 } },
        active: { filter: { type: 'none' } },
    },
}))
</script>

<style scoped>
</style>
