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fnx_web/svelte/src/file_viewer/viewers/Zip.svelte
2023-01-17 16:13:26 +01:00

101 lines
2.0 KiB
Svelte

<script>
import { createEventDispatcher } from "svelte";
import { formatDataVolume, formatDate } from "../../util/Formatting.svelte"
import TextBlock from "./TextBlock.svelte";
import ZipItem from "./ZipItem.svelte";
let dispatch = createEventDispatcher()
let status = "loading"
let file = {
name: "",
mime_type: "",
size: 0,
date_upload: "",
icon_href: ""
}
let zip = {
size: 0,
children: null,
}
let uncomp_size = 0
export const set_file = async f => {
file = f
dispatch("loading", true)
try {
let resp = await fetch(f.info_href+"/zip")
if (resp.status >= 400) {
status = "parse_failed"
return
}
zip = await resp.json()
uncomp_size = recursive_size(zip)
} catch (err) {
console.error(err)
} finally {
dispatch("loading", false)
}
status = "finished"
}
const recursive_size = (file) => {
let size = file.size
// If the file has children (array is iterable) we call this function on all
// the children and add the size to our size accumulator
if (file.children.forEach) {
file.children.forEach(child => {
size += recursive_size(child)
});
}
// Return the total size of this file and all its children
return size
}
</script>
<h1>{file.name}</h1>
<img src={file.icon_href} alt="File icon" class="icon">
<TextBlock width="600px">
Compressed size: {formatDataVolume(file.size, 3)}<br/>
Uncompressed size: {formatDataVolume(uncomp_size, 3)}<br/>
Uploaded on: {formatDate(file.date_upload, true, true, true)}
<br/>
<button class="button_highlight" on:click={() => {dispatch("download")}}>
<i class="icon">download</i>
<span>Download</span>
</button>
</TextBlock>
<br/><br/>
{#if status === "parse_failed"}
<TextBlock width="650px">
<p>
Zip archive could not be parsed. It may be corrupted.
</p>
</TextBlock>
{/if}
{#if status === "finished"}
<TextBlock width="1000px">
<h2>Files in this zip archive</h2>
<ZipItem item={zip} />
</TextBlock>
{/if}
<style>
h1 {
text-shadow: 1px 1px 3px var(--shadow_color);
line-break: anywhere;
}
</style>