121 lines
3.9 KiB
Vue
121 lines
3.9 KiB
Vue
<script setup lang="ts">
|
||
import type { TorrentFileEntry } from '~/types/api'
|
||
|
||
const props = defineProps<{
|
||
infoHash: string
|
||
magnet: string
|
||
/** 全部可预览的图片，按文件清单原始顺序 */
|
||
images: TorrentFileEntry[]
|
||
index: number
|
||
}>()
|
||
|
||
const emit = defineEmits<{ close: []; 'update:index': [value: number] }>()
|
||
|
||
const status = ref<'loading' | 'ok' | 'err'>('loading')
|
||
const errorText = ref('')
|
||
const src = ref('')
|
||
let objectUrl = ''
|
||
|
||
const current = computed<TorrentFileEntry | undefined>(() => props.images[props.index])
|
||
const requestUrl = computed(
|
||
() =>
|
||
`/api/torrent/${props.infoHash}/preview?path=${encodeURIComponent(
|
||
current.value?.path || ''
|
||
)}&magnet=${encodeURIComponent(props.magnet)}`
|
||
)
|
||
|
||
function revoke() {
|
||
if (objectUrl) {
|
||
URL.revokeObjectURL(objectUrl)
|
||
objectUrl = ''
|
||
}
|
||
}
|
||
|
||
async function load() {
|
||
revoke()
|
||
src.value = ''
|
||
errorText.value = ''
|
||
status.value = 'loading'
|
||
try {
|
||
const res = await fetch(requestUrl.value)
|
||
if (!res.ok) {
|
||
// 服务端用 statusMessage 带上可读原因：没有做种节点 / 图片过大 / 文件不存在
|
||
const text = await res.text()
|
||
let message = text
|
||
try {
|
||
const json = JSON.parse(text)
|
||
message = json.statusMessage || json.message || text
|
||
} catch {
|
||
/* 不是 JSON 就用原文 */
|
||
}
|
||
throw new Error(message || `请求失败（HTTP ${res.status}）`)
|
||
}
|
||
objectUrl = URL.createObjectURL(await res.blob())
|
||
src.value = objectUrl
|
||
status.value = 'ok'
|
||
} catch (err) {
|
||
errorText.value = errorMessage(err)
|
||
status.value = 'err'
|
||
}
|
||
}
|
||
|
||
function step(delta: number) {
|
||
const next = props.index + delta
|
||
if (next < 0 || next >= props.images.length) return
|
||
emit('update:index', next)
|
||
}
|
||
|
||
function onKey(e: KeyboardEvent) {
|
||
if (e.key === 'Escape') emit('close')
|
||
else if (e.key === 'ArrowLeft') step(-1)
|
||
else if (e.key === 'ArrowRight') step(1)
|
||
}
|
||
|
||
watch(() => [props.index, props.infoHash, props.magnet], load, { immediate: true })
|
||
|
||
onMounted(() => window.addEventListener('keydown', onKey))
|
||
onBeforeUnmount(() => {
|
||
window.removeEventListener('keydown', onKey)
|
||
revoke()
|
||
})
|
||
</script>
|
||
|
||
<template>
|
||
<div class="overlay" @click.self="emit('close')">
|
||
<div class="lightbox">
|
||
<div class="panel-hd">
|
||
<span class="label">IMAGE</span>
|
||
<span class="mono small truncate" style="max-width: 36ch" :title="current?.path">
|
||
{{ splitPath(current?.path || '').name }}
|
||
</span>
|
||
<span class="spacer" />
|
||
<span class="mono small dim">{{ index + 1 }} / {{ images.length }}</span>
|
||
<span class="mono small dim">{{ formatBytes(current?.length) }}</span>
|
||
<button class="btn btn-sm btn-ghost" @click="emit('close')">关闭</button>
|
||
</div>
|
||
|
||
<div class="lightbox-bd">
|
||
<div v-if="status === 'loading'" class="empty">
|
||
<span class="spin" /> 正在从做种节点拉取这张图片，取决于对方的上传速度…
|
||
</div>
|
||
<div v-else-if="status === 'err'" class="stack sm" style="padding: 22px">
|
||
<div class="note err">{{ errorText }}</div>
|
||
<div class="row">
|
||
<button class="btn btn-sm" @click="load">重试</button>
|
||
<a class="btn btn-sm btn-ghost" :href="requestUrl" target="_blank" rel="noreferrer noopener">
|
||
直接打开图片地址
|
||
</a>
|
||
</div>
|
||
</div>
|
||
<img v-else :src="src" :alt="current?.path || 'preview'" class="lightbox-img" />
|
||
</div>
|
||
|
||
<div class="lightbox-ft">
|
||
<button class="btn btn-sm" :disabled="index <= 0" @click="step(-1)">← 上一张</button>
|
||
<span class="mono small dim truncate" style="max-width: 44ch" :title="current?.path">{{ current?.path }}</span>
|
||
<button class="btn btn-sm" :disabled="index >= images.length - 1" @click="step(1)">下一张 →</button>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</template>
|