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<script lang="ts">
import Chart from 'chart.js/auto';
import { onMount } from 'svelte';
import StockSelector from '../input/StockSelector.svelte';
async function fetchChartData(stock: string, startDate: string, endDate: string) {
const res = await fetch(
`/stocksapi/chart?query=${stock}&startDate=${startDate}&endDate=${endDate}&interval=${range}`,
{
method: 'GET',
headers: {
'Content-Type': 'application/json',
'Cache-Control': 'no-cache'
}
}
);
return await res.json();
}
function updateGraph() {
fetchChartData(selectedStock, startDate, endDate).then((data) => {
if (chart) {
chart.destroy();
chart = null;
}
const { quotes, meta } = data;
validRanges = meta.validRanges;
const labels = quotes.map((item: any) => item.date.split('T')[0]);
const datasets = ['low', 'high', 'open', 'close'].map((key) => ({
label: key.charAt(0).toUpperCase() + key.slice(1),
data: quotes.map((item: any) => item[key]),
borderColor:
key === 'low'
? 'rgb(255, 99, 132)'
: key === 'high'
? 'rgb(54, 162, 235)'
: key === 'open'
? 'rgb(255, 205, 86)'
: 'rgb(75, 192, 192)',
fill: false
}));
// @ts-ignore
chart = new Chart(document.getElementById('stockgraph'), {
type: 'line',
data: {
labels,
datasets
},
options: {
responsive: true,
maintainAspectRatio: true,
plugins: {
title: {
display: true,
text: meta.longName
}
}
}
});
});
}
let today = $state(new Date().toISOString().split('T')[0]);
let selectedStock = $state('2223.SR');
let startDate = $state('');
let endDate = $state('');
let chart = $state<Chart | null>(null);
let range = $state('1d');
let validRanges = $state(['1d']);
onMount(() => {
endDate = new Date().toISOString().split('T')[0];
startDate = new Date(Date.now() - 7 * 24 * 60 * 60 * 1000).toISOString().split('T')[0];
updateGraph();
});
$effect(() => {
if (selectedStock && startDate && endDate && range) {
updateGraph();
}
});
$effect(() => {
if (startDate && endDate && startDate > endDate) {
let temp = startDate;
startDate = endDate;
endDate = temp;
}
});
</script>
<div>
<div class="header">
<h2>Vue d'ensemble : {selectedStock}</h2>
<div class="controls">
<input type="date" name="startDate" id="startDate" bind:value={startDate} max={today} />
<input type="date" name="endDate" id="endDate" bind:value={endDate} max={today} />
<select name="validRanges" id="validRanges" bind:value={range}>
{#each validRanges as r}
<option value={r}>
{r}
</option>
{/each}
</select>
<StockSelector bind:selectedStock />
</div>
</div>
<canvas id="stockgraph"></canvas>
</div>
<style>
.header {
display: flex;
align-items: center;
justify-content: space-between;
max-height: 512px !important;
}
h2 {
font-weight: bold;
color: var(--text-lime);
font-size: 24px;
}
#stockgraph {
width: 100% !important;
max-height: 512px !important;
}
</style>
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