mapcomplete/UI/DownloadFlow/DownloadButton.svelte

95 lines
2.9 KiB
Svelte

<script lang="ts">
import type { SpecialVisualizationState } from "../SpecialVisualization"
import { ArrowDownTrayIcon } from "@babeard/svelte-heroicons/mini"
import Tr from "../Base/Tr.svelte"
import Translations from "../i18n/Translations"
import type { FeatureCollection } from "geojson"
import Loading from "../Base/Loading.svelte"
import { Translation } from "../i18n/Translation"
import DownloadHelper from "./DownloadHelper"
import { Utils } from "../../Utils"
import type { PriviligedLayerType } from "../../Models/Constants"
import { UIEventSource } from "../../Logic/UIEventSource"
export let state: SpecialVisualizationState
export let extension: string
export let mimetype: string
export let construct: (
geojsonCleaned: FeatureCollection,
title: string,
status?: UIEventSource<string>
) => (Blob | string) | Promise<void>
export let mainText: Translation
export let helperText: Translation
export let metaIsIncluded: boolean
let downloadHelper: DownloadHelper = new DownloadHelper(state)
const t = Translations.t.general.download
let isExporting = false
let isError = false
let status: UIEventSource<string> = new UIEventSource<string>(undefined)
async function clicked() {
isExporting = true
const gpsLayer = state.layerState.filteredLayers.get(<PriviligedLayerType>"gps_location")
state.lastClickObject.features.setData([])
const gpsIsDisplayed = gpsLayer.isDisplayed.data
try {
gpsLayer.isDisplayed.setData(false)
const geojson: FeatureCollection = downloadHelper.getCleanGeoJson(metaIsIncluded)
const name = state.layout.id
const title = `MapComplete_${name}_export_${new Date()
.toISOString()
.substr(0, 19)}.${extension}`
const promise = construct(geojson, title, status)
let data: Blob | string
if (typeof promise === "string") {
data = promise
} else if (typeof promise["then"] === "function") {
data = await (<Promise<Blob | string>>promise)
} else {
data = <Blob>promise
}
if (!data) {
return
}
console.log("Got data", data)
Utils.offerContentsAsDownloadableFile(data, title, {
mimetype,
})
} catch (e) {
isError = true
console.error(e)
} finally {
isExporting = false
gpsLayer.isDisplayed.setData(gpsIsDisplayed)
}
}
</script>
{#if isError}
<Tr cls="alert" t={Translations.t.general.error} />
{:else if isExporting}
<Loading>
{#if $status}
{$status}
{:else}
<Tr t={t.exporting} />
{/if}
</Loading>
{:else}
<button class="flex w-full" on:click={clicked}>
<slot name="image">
<ArrowDownTrayIcon class="mr-2 h-12 w-12 shrink-0" />
</slot>
<span class="flex flex-col items-start">
<Tr t={mainText} />
<Tr t={helperText} cls="subtle" />
</span>
</button>
{/if}