frontend/src/lib/components/chat/Placeholder.svelte

<script lang="ts">
	import { toast } from "svelte-sonner";
	import { marked } from "marked";
	import DOMPurify from "dompurify";

	import { onMount, getContext, tick, createEventDispatcher } from "svelte";
	import { blur, fade } from "svelte/transition";

	const dispatch = createEventDispatcher();

	import { getChatList } from "$lib/apis/chats";
	import { updateFolderById } from "$lib/apis/folders";

	import {
		config,
		user,
		models as _models,
		temporaryChatEnabled,
		selectedFolder,
		chats,
		currentChatPage,
	} from "$lib/stores";
	import {
		sanitizeResponseContent,
		extractCurlyBraceWords,
	} from "$lib/utils";
	import { REXPRO_API_BASE_URL, REXPRO_BASE_URL } from "$lib/constants";

	import Suggestions from "./Suggestions.svelte";
	import Tooltip from "$lib/components/common/Tooltip.svelte";
	import EyeSlash from "$lib/components/icons/EyeSlash.svelte";
	import MessageInput from "./MessageInput.svelte";
	import FolderPlaceholder from "./Placeholder/FolderPlaceholder.svelte";
	import FolderTitle from "./Placeholder/FolderTitle.svelte";

	const i18n = getContext("i18n");

	export let createMessagePair: Function;
	export let stopResponse: Function;

	export let autoScroll = false;

	export let atSelectedModel: Model | undefined;
	export let selectedModels: [""];

	export let history;

	export let prompt = "";
	export let files = [];
	export let messageInput = null;

	export let selectedToolIds = [];
	export let selectedSkillIds = [];
	export let selectedFilterIds = [];
	export let pendingOAuthTools = [];

	export let showCommands = false;

	export let imageGenerationEnabled = false;
	export let codeInterpreterEnabled = false;
	export let webSearchEnabled = false;

	export let onUpload: Function = (e) => {};
	export let onSelect = (e) => {};
	export let onChange = (e) => {};

	export let toolServers = [];

	export let dragged = false;

	let models = [];
	let selectedModelIdx = 0;

	$: if (selectedModels.length > 0) {
		selectedModelIdx = models.length - 1;
	}

	$: models = selectedModels.map((id) => $_models.find((m) => m.id === id));
</script>

<div
	class="m-auto w-full max-w-6xl px-2 @2xl:px-20 translate-y-6 py-24 text-center"
>
	{#if $temporaryChatEnabled}
		<Tooltip
			content={$i18n.t(
				"This chat won't appear in history and your messages will not be saved.",
			)}
			className="w-full flex justify-center mb-0.5"
			placement="top"
		>
			<div
				class="flex items-center gap-2 text-gray-500 text-base my-2 w-fit"
			>
				<EyeSlash strokeWidth="2.5" className="size-4" />{$i18n.t(
					"Temporary Chat",
				)}
			</div>
		</Tooltip>
	{/if}

	<div
		class="w-full text-3xl text-gray-800 dark:text-gray-100 text-center flex items-center gap-4 font-primary"
	>
		<div class="w-full flex flex-col justify-center items-center">
			{#if $selectedFolder}
				<FolderTitle
					folder={$selectedFolder}
					onUpdate={async (folder) => {
						await chats.set(
							await getChatList(
								localStorage.token,
								$currentChatPage,
							),
						);
						currentChatPage.set(1);
					}}
					onDelete={async () => {
						await chats.set(
							await getChatList(
								localStorage.token,
								$currentChatPage,
							),
						);
						currentChatPage.set(1);

						selectedFolder.set(null);
					}}
				/>
			{:else}
				<div
					class="flex flex-row justify-center gap-2.5 @sm:gap-3 w-fit px-5 max-w-xl"
				>
					<div class="flex shrink-0 justify-center">
						<div
							class="flex -space-x-4 mb-0.5"
							in:fade={{ duration: 100 }}
						>
							{#each models as model, modelIdx}
								<Tooltip
									content={(
										models[modelIdx]?.info?.meta?.tags ?? []
									)
										.map((tag) => tag.name.toUpperCase())
										.join(", ")}
									placement="top"
								>
									<button
										aria-hidden={models.length <= 1}
										aria-label={$i18n.t(
											"Get information on {{name}} in the UI",
											{
												name: models[modelIdx]?.name,
											},
										)}
										on:click={() => {
											selectedModelIdx = modelIdx;
										}}
									>
										<img
											src={`${REXPRO_API_BASE_URL}/models/model/profile/image?id=${model?.id}&lang=${$i18n.language}`}
											class=" size-9 @sm:size-10 rounded-xl border-[1px] border-gray-100 dark:border-none"
											aria-hidden="true"
											draggable="false"
											on:error={(e) => {
												e.currentTarget.src =
													"/favicon.png";
											}}
										/>

									</button>
								</Tooltip>
							{/each}
						</div>
					</div>

					<div
						class=" text-3xl @sm:text-3xl line-clamp-1 flex items-center"
						in:fade={{ duration: 100 }}
					>
						{#if models[selectedModelIdx]?.name}
							<Tooltip
								content={models[selectedModelIdx]?.name}
								placement="top"
								className=" flex items-center "
							>
								<span class="line-clamp-1">
									{models[selectedModelIdx]?.name}
								</span>
							</Tooltip>
						{:else}
							{$i18n.t("Hello, {{name}}", { name: $user?.name })}
						{/if}
					</div>
				</div>

				<div class="flex mt-1 mb-2">
					<div in:fade={{ duration: 100, delay: 50 }}>
						{#if models[selectedModelIdx]?.info?.meta?.description ?? null}
							<Tooltip
								className=" w-fit"
								content={DOMPurify.sanitize(
									marked.parse(
										sanitizeResponseContent(
											models[selectedModelIdx]?.info?.meta
												?.description ?? "",
										).replaceAll("\n", "<br>"),
									),
								)}
								placement="top"
							>
								<div
									class="mt-0.5 px-2 text-sm font-normal text-gray-500 dark:text-gray-400 line-clamp-2 max-w-xl markdown"
								>
									{@html DOMPurify.sanitize(
										marked.parse(
											sanitizeResponseContent(
												models[selectedModelIdx]?.info
													?.meta?.description ?? "",
											).replaceAll("\n", "<br>"),
										),
									)}
								</div>
							</Tooltip>

							{#if models[selectedModelIdx]?.info?.meta?.user}
								<div
									class="mt-0.5 text-sm font-normal text-gray-400 dark:text-gray-500"
								>
									By
									{#if models[selectedModelIdx]?.info?.meta?.user.community}
										<a
											href="https://rexpro-ai.rexpro.com/m/{models[
												selectedModelIdx
											]?.info?.meta?.user.username}"
											>{models[selectedModelIdx]?.info
												?.meta?.user.name
												? models[selectedModelIdx]?.info
														?.meta?.user.name
												: `@${models[selectedModelIdx]?.info?.meta?.user.username}`}</a
										>
									{:else}
										{models[selectedModelIdx]?.info?.meta
											?.user.name}
									{/if}
								</div>
							{/if}
						{/if}
					</div>
				</div>
			{/if}

			<div
				class="text-base font-normal @md:max-w-3xl w-full py-3 {atSelectedModel
					? 'mt-2'
					: ''}"
			>
				<MessageInput
					bind:this={messageInput}
					{history}
					{selectedModels}
					bind:files
					bind:prompt
					bind:autoScroll
					bind:selectedToolIds
					bind:selectedSkillIds
					bind:selectedFilterIds
					bind:imageGenerationEnabled
					bind:codeInterpreterEnabled
					bind:webSearchEnabled
					bind:atSelectedModel
					bind:showCommands
					bind:dragged
					{pendingOAuthTools}
					{toolServers}
					{stopResponse}
					{createMessagePair}
					placeholder={$i18n.t("How can I help you today?")}
					{onChange}
					{onUpload}
					on:submit={(e) => {
						dispatch("submit", e.detail);
					}}
				/>
			</div>
		</div>
	</div>

	{#if $selectedFolder}
		<div
			class="mx-auto px-4 md:max-w-3xl md:px-6 font-primary min-h-62"
			in:fade={{ duration: 200, delay: 200 }}
		>
			<FolderPlaceholder folder={$selectedFolder} />
		</div>
	{:else}
		<div
			class="mx-auto max-w-2xl font-primary mt-2"
			in:fade={{ duration: 200, delay: 200 }}
		>
			<div class="mx-5">
				<Suggestions
					suggestionPrompts={atSelectedModel?.info?.meta
						?.suggestion_prompts ??
						models[selectedModelIdx]?.info?.meta
							?.suggestion_prompts ??
						$config?.default_prompt_suggestions ??
						[]}
					inputValue={prompt}
					{onSelect}
				/>
			</div>
		</div>
	{/if}
</div>