windmill/frontend/src/lib/components/DBManagerDrawer.svelte

<script lang="ts">
	import { dbSchemas, workspaceStore, type DBSchema } from '$lib/stores'
	import Button from './common/button/Button.svelte'
	import Drawer from './common/drawer/Drawer.svelte'
	import DrawerContent from './common/drawer/DrawerContent.svelte'
	import { sendUserToast, sortArray } from '$lib/utils'
	import { ArrowLeft, Expand, Loader2, Minimize, RefreshCcw } from 'lucide-svelte'
	import { dbSupportsSchemas, type TableMetadata } from './apps/components/display/dbtable/utils'
	import DbManager from './DBManager.svelte'
	import {
		dbSchemaOpsWithPreviewScripts,
		dbTableOpsWithPreviewScripts,
		getDbType,
		getDucklakeSchema
	} from './dbOps'
	import { Pane, Splitpanes } from 'svelte-splitpanes'
	import SqlRepl from './SqlRepl.svelte'
	import SimpleAgTable from './SimpleAgTable.svelte'
	import { untrack } from 'svelte'
	import type { DbInput } from './dbTypes'
	import {
		getDbSchemas,
		loadAllTablesMetaData,
		loadTableMetaData
	} from './apps/components/display/dbtable/metadata'

	let input: DbInput | undefined = $state()
	let open = $derived(!!input)

	export function openDrawer(nInput: DbInput) {
		input = nInput
		getSchema()
	}
	export function closeDrawer() {
		input = undefined
		refreshCount = 0
		refreshing = false
	}

	let dbSchema: DBSchema | undefined = $derived(input && $dbSchemas[getDbSchemasPath(input)])
	function getDbSchemasPath(input: DbInput): string {
		switch (input.type) {
			case 'database':
				return input.resourcePath
			case 'ducklake':
				return 'ducklake://' + input.ducklake
		}
	}

	// `refreshCount` is a derived state. `refreshing` is the source of truth
	let refreshCount = $state(0)
	$effect(() => {
		if (refreshing) untrack(() => (refreshCount += 1))
	})

	let refreshing = $state(false)
	$effect(() => {
		if (refreshing) getSchema()
	})
	const refresh = () => !refreshing && (refreshing = true)

	let expand = $state(false)
	$effect(() => {
		if (!open) expand = false
	})

	async function getSchema() {
		if (!input) return
		const dbSchemasPath = getDbSchemasPath(input)
		if ($dbSchemas[dbSchemasPath] && !refreshing) return

		const oldDbSchema = $dbSchemas[dbSchemasPath]
		if (input.type == 'database') {
			await getDbSchemas(
				input.resourceType,
				input.resourcePath,
				$workspaceStore,
				$dbSchemas,
				(message: string) => {
					if (open) sendUserToast(message, true)
				}
			)
		} else if (input.type == 'ducklake') {
			$dbSchemas[dbSchemasPath] = await getDucklakeSchema({
				workspace: $workspaceStore!,
				ducklake: input.ducklake
			})
		}

		// avoid infinite loop on error due to the way getDbSchemas is implemented
		// and relying on an assignement side effect
		if (oldDbSchema !== $dbSchemas[dbSchemasPath]) $dbSchemas = $dbSchemas
		refreshing = false
	}

	let windowWidth = $state(window.innerWidth)

	let replPanelSize = $state(36)
	const REPL_MIN_SIZE = 1.5

	let replResultData: undefined | Record<string, any>[] = $state(undefined)

	let cachedColDefs: Record<string, TableMetadata> = {}
	let cachedLastRefreshCount = 0

	async function getColDefs(tableKey: string): Promise<TableMetadata> {
		if (cachedLastRefreshCount !== refreshCount) cachedColDefs = {}
		cachedLastRefreshCount = refreshCount

		if (cachedColDefs[tableKey]) return cachedColDefs[tableKey]
		if (!input) return []

		try {
			cachedColDefs = (await loadAllTablesMetaData($workspaceStore, input)) ?? cachedColDefs
			return cachedColDefs[tableKey]
		} catch (e) {
			if (input?.type == 'ducklake')
				throw 'Impossible that loadAllTablesMetaData fails for Ducklake'
			// Query is not implemented for all dbs, need a fallback
			const result = await loadTableMetaData(input, $workspaceStore, tableKey)

			if (result) cachedColDefs[tableKey] = result
			return result ?? []
		}
	}
</script>

<svelte:window
	bind:innerWidth={windowWidth}
	onkeydown={(e) => {
		if (e.key === 'Escape') {
			if (replResultData) {
				replResultData = undefined
			}
		}
	}}
/>

<Drawer
	bind:open
	size={expand ? `${windowWidth}px` : '1200px'}
	preventEscape
	on:close={closeDrawer}
>
	<DrawerContent
		title={replResultData ? 'Query Result' : 'Database Manager'}
		on:close={() => {
			if (replResultData) {
				replResultData = undefined
			} else {
				closeDrawer()
			}
		}}
		CloseIcon={replResultData ? ArrowLeft : undefined}
		noPadding
	>
		{#if dbSchema && $workspaceStore && input}
			{@const _input = input}
			{@const dbType = getDbType(_input)}
			<Splitpanes horizontal>
				<Pane class="relative">
					<!-- svelte-ignore a11y_click_events_have_key_events -->
					<!-- svelte-ignore a11y_no_static_element_interactions -->
					<div
						class={'absolute inset-0 z-10 p-8 ' +
							(replResultData
								? 'bg-surface/90'
								: 'transition-colors bg-transparent pointer-events-none select-none')}
						onclick={(e) => {
							// Only proceed if the click is directly on this div and not on the child elements
							if (e.target === e.currentTarget) {
								replResultData = undefined
							}
						}}
					>
						{#if replResultData}
							{#key replResultData}
								<SimpleAgTable data={replResultData} class="animate-zoom-in" />
							{/key}
						{/if}
					</div>
					<DbManager
						dbSupportsSchemas={input.type == 'database' && dbSupportsSchemas(input.resourceType)}
						{dbSchema}
						{getColDefs}
						dbTableOpsFactory={({ colDefs, tableKey }) =>
							dbTableOpsWithPreviewScripts({
								colDefs,
								tableKey,
								input: _input,
								workspace: $workspaceStore
							})}
						dbSchemaOps={dbSchemaOpsWithPreviewScripts({
							input: _input,
							workspace: $workspaceStore
						})}
						{dbType}
						{refresh}
					/>
				</Pane>
				<Pane bind:size={replPanelSize} minSize={REPL_MIN_SIZE} class="relative">
					<SqlRepl
						{input}
						onData={(data) => {
							replResultData = data
						}}
						placeholderTableName={sortArray(
							Object.keys(
								dbSchema?.schema[
									'public' in dbSchema?.schema
										? 'public'
										: 'dbo' in dbSchema?.schema
											? 'dbo'
											: Object.keys(dbSchema?.schema ?? {})?.[0]
								] ?? {}
							)
						)?.[0]}
					/>
				</Pane>
			</Splitpanes>
		{:else}
			<Splitpanes>
				<Pane class="relative flex justify-center items-center">
					<Loader2 class="animate-spin" size={32} />
				</Pane>
			</Splitpanes>
		{/if}
		{#snippet actions()}
			<Button
				loading={refreshing}
				on:click={() => refresh()}
				startIcon={{ icon: RefreshCcw }}
				size="xs"
				color="light"
			>
				Refresh
			</Button>

			<Button
				on:click={() => (expand = !expand)}
				startIcon={{ icon: expand ? Minimize : Expand }}
				size="xs"
				color="light"
			/>
		{/snippet}
	</DrawerContent>
</Drawer>