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<!--
SPDX-FileCopyrightText: syuilo and misskey-project
SPDX-License-Identifier: AGPL-3.0-only
-->
<template>
<div :class="$style.items">
<template v-for="(item, i) in items" :key="item.id">
<div :class="$style.left">
<slot v-if="item.type === 'event'" name="left" :event="item.data" :timestamp="item.timestamp" :delta="item.delta"></slot>
</div>
<div :class="[$style.center, item.type === 'date' ? $style.date : '', i === 0 ? $style.first : '', i === items.length - 1 ? $style.last : '']">
<div :class="$style.centerLine"></div>
<div :class="$style.centerPoint"></div>
</div>
<div :class="$style.right">
<slot v-if="item.type === 'event'" name="right" :event="item.data" :timestamp="item.timestamp" :delta="item.delta"></slot>
<div v-else :class="$style.dateLabel"><i class="ti ti-chevron-up"></i> {{ item.prevText }}</div>
</div>
</template>
</div>
</template>
<script lang="ts">
export type TlEvent<E = any> = {
id: string;
timestamp: number;
data: E;
};
</script>
<script lang="ts" setup generic="T extends unknown">
import { computed } from 'vue';
const props = withDefaults(defineProps<{
events: TlEvent<T>[];
groupBy?: 'd' | 'h';
}>(), {
groupBy: 'd',
});
const events = computed(() => {
return props.events.toSorted((a, b) => b.timestamp - a.timestamp);
});
function getDateText(dateInstance: Date) {
const year = dateInstance.getFullYear();
const month = dateInstance.getMonth() + 1;
const date = dateInstance.getDate();
const hour = dateInstance.getHours();
return `${year.toString()}/${month.toString()}/${date.toString()} ${hour.toString().padStart(2, '0')}:00:00`;
}
type TlItem<T> = ({
id: string;
type: 'event';
timestamp: number;
delta: number
data: T;
} | {
id: string;
type: 'date';
prev: Date;
prevText: string;
next: Date | null;
nextText: string;
});
const items = computed<TlItem<T>[]>(() => {
const results: TlItem<T>[] = [];
for (let i = 0; i < events.value.length; i++) {
const item = events.value[i];
const date = new Date(item.timestamp);
const nextDate = events.value[i + 1] ? new Date(events.value[i + 1].timestamp) : null;
results.push({
id: item.id,
type: 'event',
timestamp: item.timestamp,
delta: i === events.value.length - 1 ? 0 : item.timestamp - events.value[i + 1].timestamp,
data: item.data,
});
if (i !== events.value.length - 1 && nextDate != null) {
let needsSeparator = false;
if (props.groupBy === 'd') {
needsSeparator = (
date.getFullYear() !== nextDate.getFullYear() ||
date.getMonth() !== nextDate.getMonth() ||
date.getDate() !== nextDate.getDate()
);
} else if (props.groupBy === 'h') {
needsSeparator = (
date.getFullYear() !== nextDate.getFullYear() ||
date.getMonth() !== nextDate.getMonth() ||
date.getDate() !== nextDate.getDate() ||
date.getHours() !== nextDate.getHours()
);
}
if (needsSeparator) {
results.push({
id: `date-${item.id}`,
type: 'date',
prev: date,
prevText: getDateText(date),
next: nextDate,
nextText: getDateText(nextDate),
});
}
}
}
return results;
});
</script>
<style lang="scss" module>
.items {
display: grid;
grid-template-columns: max-content 18px 1fr;
gap: 0 8px;
}
.center {
position: relative;
&.date {
.centerPoint::before {
position: absolute;
content: "";
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
width: 7px;
height: 7px;
background: var(--MI_THEME-bg);
border-radius: 50%;
}
}
&.first {
.centerLine {
height: 50%;
top: auto;
bottom: 0;
}
}
&.last {
.centerLine {
height: 50%;
top: 0;
bottom: auto;
}
}
}
.centerLine {
position: absolute;
top: 0;
left: 0;
right: 0;
margin: auto;
width: 3px;
height: 100%;
background: color-mix(in srgb, var(--MI_THEME-accent), var(--MI_THEME-bg) 75%);
}
.centerPoint {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
width: 13px;
height: 13px;
background: color-mix(in srgb, var(--MI_THEME-accent), var(--MI_THEME-bg) 75%);
border-radius: 50%;
}
.left {
min-width: 0;
align-self: center;
justify-self: right;
}
.right {
min-width: 0;
align-self: center;
}
.dateLabel {
opacity: 0.7;
font-size: 90%;
padding: 4px;
margin: 8px 0;
}
</style>
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