src/lib/components/channel/Messages/Message.svelte

<script lang="ts">
	import dayjs from 'dayjs';
	import relativeTime from 'dayjs/plugin/relativeTime';
	import isToday from 'dayjs/plugin/isToday';
	import isYesterday from 'dayjs/plugin/isYesterday';
	import localizedFormat from 'dayjs/plugin/localizedFormat';

	dayjs.extend(relativeTime);
	dayjs.extend(isToday);
	dayjs.extend(isYesterday);
	dayjs.extend(localizedFormat);

	import { getContext, onMount } from 'svelte';
	const i18n = getContext<Writable<i18nType>>('i18n');

	import { formatDate } from '$lib/utils';

	import { settings, user, shortCodesToEmojis } from '$lib/stores';
	import { WEBUI_API_BASE_URL, WEBUI_BASE_URL } from '$lib/constants';
	import { getMessageData } from '$lib/apis/channels';

	import Markdown from '$lib/components/chat/Messages/Markdown.svelte';
	import ProfileImage from '$lib/components/chat/Messages/ProfileImage.svelte';
	import Name from '$lib/components/chat/Messages/Name.svelte';
	import ConfirmDialog from '$lib/components/common/ConfirmDialog.svelte';
	import GarbageBin from '$lib/components/icons/GarbageBin.svelte';
	import Pencil from '$lib/components/icons/Pencil.svelte';
	import Tooltip from '$lib/components/common/Tooltip.svelte';
	import Textarea from '$lib/components/common/Textarea.svelte';
	import Image from '$lib/components/common/Image.svelte';
	import FileItem from '$lib/components/common/FileItem.svelte';
	import ProfilePreview from './Message/ProfilePreview.svelte';
	import ChatBubbleOvalEllipsis from '$lib/components/icons/ChatBubble.svelte';
	import FaceSmile from '$lib/components/icons/FaceSmile.svelte';
	import EmojiPicker from '$lib/components/common/EmojiPicker.svelte';
	import ChevronRight from '$lib/components/icons/ChevronRight.svelte';
	import Emoji from '$lib/components/common/Emoji.svelte';
	import Skeleton from '$lib/components/chat/Messages/Skeleton.svelte';
	import ArrowUpLeftAlt from '$lib/components/icons/ArrowUpLeftAlt.svelte';
	import PinSlash from '$lib/components/icons/PinSlash.svelte';
	import Pin from '$lib/components/icons/Pin.svelte';

	export let className = '';

	export let message;
	export let channel;

	export let showUserProfile = true;
	export let thread = false;

	export let replyToMessage = false;
	export let disabled = false;
	export let pending = false;

	export let onDelete: Function = () => {};
	export let onEdit: Function = () => {};
	export let onReply: Function = () => {};
	export let onPin: Function = () => {};
	export let onThread: Function = () => {};
	export let onReaction: Function = () => {};

	let showButtons = false;

	let edit = false;
	let editedContent = null;
	let showDeleteConfirmDialog = false;

	// Swipe-to-reply state
	let swipeStartX = 0;
	let swipeStartY = 0;
	let swipeOffsetX = 0;
	let isSwiping = false;
	let swipeLocked = false; // locked to horizontal once determined
	let swipeMessageEl: HTMLElement | null = null;

	const SWIPE_THRESHOLD = 60;
	const SWIPE_MAX = 100;
	const SWIPE_DEAD_ZONE = 10;

	const handleTouchStart = (e: TouchEvent) => {
		if (disabled || edit || !onReply) return;
		const touch = e.touches[0];
		swipeStartX = touch.clientX;
		swipeStartY = touch.clientY;
		swipeOffsetX = 0;
		isSwiping = false;
		swipeLocked = false;
	};

	const handleTouchMove = (e: TouchEvent) => {
		if (disabled || edit || !onReply) return;
		const touch = e.touches[0];
		const deltaX = touch.clientX - swipeStartX;
		const deltaY = touch.clientY - swipeStartY;

		// Determine swipe direction from dead zone
		if (
			!swipeLocked &&
			(Math.abs(deltaX) > SWIPE_DEAD_ZONE || Math.abs(deltaY) > SWIPE_DEAD_ZONE)
		) {
			if (Math.abs(deltaY) > Math.abs(deltaX)) {
				// Vertical scroll — abort swipe tracking
				isSwiping = false;
				swipeLocked = true;
				return;
			}
			// Horizontal swipe — lock in
			swipeLocked = true;
			isSwiping = true;
		}

		if (!isSwiping) return;

		// Only allow right swipe
		const clampedX = Math.max(0, deltaX);
		// Dampen the motion beyond threshold for a rubber-band feel
		swipeOffsetX =
			clampedX <= SWIPE_THRESHOLD ? clampedX : SWIPE_THRESHOLD + (clampedX - SWIPE_THRESHOLD) * 0.3;
		swipeOffsetX = Math.min(swipeOffsetX, SWIPE_MAX);
	};

	const handleTouchEnd = () => {
		if (isSwiping && swipeOffsetX >= SWIPE_THRESHOLD && onReply) {
			onReply(message);
		}
		swipeOffsetX = 0;
		isSwiping = false;
		swipeLocked = false;
	};

	const loadMessageData = async () => {
		if (message && message?.data === true) {
			const res = await getMessageData(localStorage.token, channel?.id, message.id);
			if (res) {
				message.data = res;
			}
		}
	};

	onMount(async () => {
		if (message && message?.data === true) {
			await loadMessageData();
		}
	});
</script>

<ConfirmDialog
	bind:show={showDeleteConfirmDialog}
	title={$i18n.t('Delete Message')}
	message={$i18n.t('Are you sure you want to delete this message?')}
	onConfirm={async () => {
		await onDelete();
	}}
/>

{#if message}
	<div
		class="swipe-reply-wrapper relative"
		on:touchstart={handleTouchStart}
		on:touchmove={handleTouchMove}
		on:touchend={handleTouchEnd}
	>
		<!-- Swipe reply indicator -->
		{#if swipeOffsetX > 0}
			<div
				class="swipe-reply-indicator"
				style="opacity: {Math.min(swipeOffsetX / SWIPE_THRESHOLD, 1)}; transform: scale({0.5 +
					Math.min(swipeOffsetX / SWIPE_THRESHOLD, 1) * 0.5});"
			>
				<div
					class="swipe-reply-icon"
					class:swipe-reply-icon--active={swipeOffsetX >= SWIPE_THRESHOLD}
				>
					<ArrowUpLeftAlt className="size-5" />
				</div>
			</div>
		{/if}

		<div
			id="message-{message.id}"
			class="flex flex-col justify-between w-full max-w-full mx-auto group hover:bg-gray-300/5 dark:hover:bg-gray-700/5 relative {className
				? className
				: `px-5 ${
						replyToMessage
							? 'border-l-4 border-blue-500 bg-blue-100/10 dark:bg-blue-100/5 pl-4'
							: ''
					} ${
						(message?.reply_to_message?.meta?.model_id ?? message?.reply_to_message?.user_id) ===
						$user?.id
							? 'border-l-4 border-orange-500 bg-orange-100/10 dark:bg-orange-100/5 pl-4'
							: ''
					} ${message?.is_pinned ? 'bg-yellow-100/20 dark:bg-yellow-100/5' : ''}`} {showUserProfile
				? 'pt-1.5 pb-0.5'
				: ''}"
			style="transform: translateX({swipeOffsetX}px); {swipeOffsetX > 0
				? ''
				: 'transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);'}"
		>
			{#if !edit && !disabled}
				<div
					class=" absolute {showButtons ? '' : 'invisible group-hover:visible'} right-1 -top-2 z-10"
				>
					<div
						class="flex gap-1 rounded-lg bg-white dark:bg-gray-850 shadow-md p-0.5 border border-gray-100/30 dark:border-gray-850/30"
					>
						{#if onReaction}
							<EmojiPicker
								onClose={() => (showButtons = false)}
								onSubmit={(name) => {
									showButtons = false;
									onReaction(name);
								}}
							>
								<Tooltip content={$i18n.t('Add Reaction')}>
									<button
										class="hover:bg-gray-100 dark:hover:bg-gray-800 transition rounded-lg p-1"
										on:click={() => {
											showButtons = true;
										}}
									>
										<FaceSmile />
									</button>
								</Tooltip>
							</EmojiPicker>
						{/if}

						{#if onReply}
							<Tooltip content={$i18n.t('Reply')}>
								<button
									class="hover:bg-gray-100 dark:hover:bg-gray-800 transition rounded-lg p-0.5"
									on:click={() => {
										onReply(message);
									}}
								>
									<ArrowUpLeftAlt className="size-5" />
								</button>
							</Tooltip>
						{/if}

						<Tooltip content={message?.is_pinned ? $i18n.t('Unpin') : $i18n.t('Pin')}>
							<button
								class="hover:bg-gray-100 dark:hover:bg-gray-800 transition rounded-lg p-1"
								on:click={() => {
									onPin(message);
								}}
							>
								{#if message?.is_pinned}
									<PinSlash className="size-4" />
								{:else}
									<Pin className="size-4" />
								{/if}
							</button>
						</Tooltip>

						{#if !thread && onThread}
							<Tooltip content={$i18n.t('Reply in Thread')}>
								<button
									class="hover:bg-gray-100 dark:hover:bg-gray-800 transition rounded-lg p-1"
									on:click={() => {
										onThread(message.id);
									}}
								>
									<ChatBubbleOvalEllipsis />
								</button>
							</Tooltip>
						{/if}

						{#if message.user_id === $user?.id || $user?.role === 'admin'}
							{#if onEdit}
								<Tooltip content={$i18n.t('Edit')}>
									<button
										class="hover:bg-gray-100 dark:hover:bg-gray-800 transition rounded-lg p-1"
										on:click={() => {
											edit = true;
											editedContent = message.content;
										}}
									>
										<Pencil />
									</button>
								</Tooltip>
							{/if}

							{#if onDelete}
								<Tooltip content={$i18n.t('Delete')}>
									<button
										class="hover:bg-gray-100 dark:hover:bg-gray-800 transition rounded-lg p-1"
										on:click={() => (showDeleteConfirmDialog = true)}
									>
										<GarbageBin />
									</button>
								</Tooltip>
							{/if}
						{/if}
					</div>
				</div>
			{/if}

			{#if message?.is_pinned}
				<div class="flex {showUserProfile ? 'mb-0.5' : 'mt-0.5'}">
					<div class="ml-8.5 flex items-center gap-1 px-1 rounded-full text-xs">
						<Pin className="size-3 text-yellow-500 dark:text-yellow-300" />
						<span class="text-gray-500">{$i18n.t('Pinned')}</span>
					</div>
				</div>
			{/if}

			{#if message?.reply_to_message?.user}
				<div class="relative text-xs mb-1">
					<div
						class="absolute h-3 w-7 left-[18px] top-2 rounded-tl-lg border-t-[1.5px] border-l-[1.5px] border-gray-200 dark:border-gray-700 z-0"
					></div>

					<button
						class="ml-12 flex items-center space-x-2 relative z-0"
						on:click={() => {
							const messageElement = document.getElementById(
								`message-${message.reply_to_message.id}`
							);
							if (messageElement) {
								messageElement.scrollIntoView({ behavior: 'smooth', block: 'center' });
								messageElement.classList.add('highlight');
								setTimeout(() => {
									messageElement.classList.remove('highlight');
								}, 2000);
								return;
							}
						}}
					>
						{#if message?.reply_to_message?.meta?.model_id}
							<img
								src={`${WEBUI_API_BASE_URL}/models/model/profile/image?id=${message.reply_to_message.meta.model_id}`}
								alt={message.reply_to_message.meta.model_name ??
									message.reply_to_message.meta.model_id}
								class="size-4 ml-0.5 rounded-full object-cover"
								on:error={(e) => {
									e.currentTarget.src = '/favicon.png';
								}}
							/>
						{:else}
							<img
								src={message.reply_to_message.user?.role === 'webhook'
									? `${WEBUI_API_BASE_URL}/channels/webhooks/${message.reply_to_message.user?.id}/profile/image`
									: `${WEBUI_API_BASE_URL}/users/${message.reply_to_message.user?.id}/profile/image`}
								alt={message.reply_to_message.user?.name ?? $i18n.t('Unknown User')}
								class="size-4 ml-0.5 rounded-full object-cover"
							/>
						{/if}

						<div class="shrink-0">
							{message?.reply_to_message.meta?.model_name ??
								message?.reply_to_message.user?.name ??
								$i18n.t('Unknown User')}
						</div>

						<div class="italic text-sm text-gray-500 dark:text-gray-400 line-clamp-1 w-full flex-1">
							<Markdown
								id={`${message.id}-reply-to`}
								content={message?.reply_to_message?.content}
							/>
						</div>
					</button>
				</div>
			{/if}

			<div
				class=" flex w-full message-{message.id} "
				id="message-{message.id}"
				dir={$settings.chatDirection}
			>
				<div class={`shrink-0 mr-1 w-9`}>
					{#if showUserProfile}
						{#if message?.meta?.model_id}
							<img
								src={`${WEBUI_API_BASE_URL}/models/model/profile/image?id=${message.meta.model_id}`}
								alt={message.meta.model_name ?? message.meta.model_id}
								class="size-8 translate-y-1 ml-0.5 object-cover rounded-full"
								on:error={(e) => {
									e.currentTarget.src = '/favicon.png';
								}}
							/>
						{:else if message.user?.role === 'webhook'}
							<ProfileImage
								src={`${WEBUI_API_BASE_URL}/channels/webhooks/${message.user?.id}/profile/image`}
								className={'size-8 ml-0.5'}
							/>
						{:else}
							<ProfilePreview user={message.user}>
								<ProfileImage
									src={`${WEBUI_API_BASE_URL}/users/${message.user?.id}/profile/image`}
									className={'size-8 ml-0.5'}
								/>
							</ProfilePreview>
						{/if}
					{:else}
						<!-- <div class="w-7 h-7 rounded-full bg-transparent" /> -->

						{#if message.created_at}
							<div
								class="mt-1.5 flex shrink-0 items-center text-xs self-center invisible group-hover:visible text-gray-500 font-medium first-letter:capitalize"
							>
								<Tooltip content={dayjs(message.created_at / 1000000).format('LLLL')}>
									{dayjs(message.created_at / 1000000).format('HH:mm')}
								</Tooltip>
							</div>
						{/if}
					{/if}
				</div>

				<div class="flex-auto w-0 pl-2">
					{#if showUserProfile}
						<Name>
							<div class=" self-end text-base shrink-0 font-medium truncate">
								{#if message?.meta?.model_id}
									{message?.meta?.model_name ?? message?.meta?.model_id}
								{:else}
									{message?.user?.name}
								{/if}
							</div>

							{#if message.created_at}
								<div
									class=" self-center text-xs text-gray-400 font-medium first-letter:capitalize ml-0.5 translate-y-[1px]"
								>
									<Tooltip content={dayjs(message.created_at / 1000000).format('LLLL')}>
										<span class="line-clamp-1">
											{#if dayjs(message.created_at / 1000000).isToday()}
												{dayjs(message.created_at / 1000000).format('LT')}
											{:else}
												{$i18n.t(formatDate(message.created_at / 1000000), {
													LOCALIZED_TIME: dayjs(message.created_at / 1000000).format('LT'),
													LOCALIZED_DATE: dayjs(message.created_at / 1000000).format('L')
												})}
											{/if}
										</span>
									</Tooltip>
								</div>
							{/if}
						</Name>
					{/if}

					{#if message?.data === true}
						<!-- loading indicator -->
						<div class=" my-2">
							<Skeleton />
						</div>
					{:else if (message?.data?.files ?? []).length > 0}
						<div
							class="my-2.5 w-full flex overflow-x-auto gap-2 flex-wrap"
							dir={$settings?.chatDirection ?? 'auto'}
						>
							{#each message?.data?.files as file}
								{@const fileUrl =
									file.url.startsWith('data') || file.url.startsWith('http')
										? file.url
										: `${WEBUI_API_BASE_URL}/files/${file.url}${file?.content_type ? '/content' : ''}`}
								<div>
									{#if file.type === 'image' || (file?.content_type ?? '').startsWith('image/')}
										<Image src={fileUrl} alt={file.name} imageClassName=" max-h-96 rounded-lg" />
									{:else if file.type === 'video' || (file?.content_type ?? '').startsWith('video/')}
										<video src={fileUrl} controls class=" max-h-96 rounded-lg"></video>
									{:else}
										<FileItem
											item={file}
											url={file.url}
											name={file.name}
											type={file.type}
											size={file?.size}
											small={true}
										/>
									{/if}
								</div>
							{/each}
						</div>
					{/if}

					{#if edit}
						<div class="py-2">
							<Textarea
								className=" bg-transparent outline-hidden w-full resize-none"
								bind:value={editedContent}
								onKeydown={(e) => {
									if (e.key === 'Escape') {
										document.getElementById('close-edit-message-button')?.click();
									}

									const isCmdOrCtrlPressed = e.metaKey || e.ctrlKey;
									const isEnterPressed = e.key === 'Enter';

									if (isCmdOrCtrlPressed && isEnterPressed) {
										document.getElementById('confirm-edit-message-button')?.click();
									}
								}}
							/>
							<div class=" mt-2 mb-1 flex justify-end text-sm font-medium">
								<div class="flex space-x-1.5">
									<button
										id="close-edit-message-button"
										class="px-3.5 py-1.5 bg-white dark:bg-gray-900 hover:bg-gray-100 text-gray-800 dark:text-gray-100 transition rounded-3xl"
										on:click={() => {
											edit = false;
											editedContent = null;
										}}
									>
										{$i18n.t('Cancel')}
									</button>

									<button
										id="confirm-edit-message-button"
										class="px-3.5 py-1.5 bg-gray-900 dark:bg-white hover:bg-gray-850 text-gray-100 dark:text-gray-800 transition rounded-3xl"
										on:click={async () => {
											onEdit(editedContent);
											edit = false;
											editedContent = null;
										}}
									>
										{$i18n.t('Save')}
									</button>
								</div>
							</div>
						</div>
					{:else}
						<div class=" min-w-full markdown-prose {pending ? 'opacity-50' : ''}">
							{#if (message?.content ?? '').trim() === '' && message?.meta?.model_id}
								<Skeleton />
							{:else}
								<Markdown
									id={message.id}
									content={message.content}
									paragraphTag="span"
								/>{#if message.created_at !== message.updated_at && (message?.meta?.model_id ?? null) === null}<span
										class="text-gray-500 text-[10px] pl-1 self-center">({$i18n.t('edited')})</span
									>{/if}
							{/if}
						</div>

						{#if (message?.reactions ?? []).length > 0}
							<div>
								<div class="flex items-center flex-wrap gap-y-1.5 gap-1 mt-1 mb-2">
									{#each message.reactions as reaction}
										<Tooltip
											content={$i18n.t('{{NAMES}} reacted with {{REACTION}}', {
												NAMES: reaction.users
													.reduce((acc, u, idx) => {
														const name = u.id === $user?.id ? $i18n.t('You') : u.name;
														const total = reaction.users.length;

														// First three names always added normally
														if (idx < 3) {
															const separator =
																idx === 0
																	? ''
																	: idx === Math.min(2, total - 1)
																		? ` ${$i18n.t('and')} `
																		: ', ';
															return `${acc}${separator}${name}`;
														}

														// More than 4 → "and X others"
														if (idx === 3 && total > 4) {
															return (
																acc +
																` ${$i18n.t('and {{COUNT}} others', {
																	COUNT: total - 3
																})}`
															);
														}

														return acc;
													}, '')
													.trim(),
												REACTION: `:${reaction.name}:`
											})}
										>
											<button
												class="flex items-center gap-1.5 transition rounded-xl px-2 py-1 cursor-pointer {reaction.users
													.map((u) => u.id)
													.includes($user?.id)
													? ' bg-blue-300/10 outline outline-blue-500/50 outline-1'
													: 'bg-gray-300/10 dark:bg-gray-500/10 hover:outline hover:outline-gray-700/30 dark:hover:outline-gray-300/30 hover:outline-1'}"
												on:click={() => {
													if (onReaction) {
														onReaction(reaction.name);
													}
												}}
											>
												<Emoji shortCode={reaction.name} />

												{#if reaction.users.length > 0}
													<div class="text-xs font-medium text-gray-500 dark:text-gray-400">
														{reaction.users?.length}
													</div>
												{/if}
											</button>
										</Tooltip>
									{/each}

									{#if onReaction}
										<EmojiPicker
											onSubmit={(name) => {
												onReaction(name);
											}}
										>
											<Tooltip content={$i18n.t('Add Reaction')}>
												<div
													class="flex items-center gap-1.5 bg-gray-500/10 hover:outline hover:outline-gray-700/30 dark:hover:outline-gray-300/30 hover:outline-1 transition rounded-xl px-1 py-1 cursor-pointer text-gray-500 dark:text-gray-400"
												>
													<FaceSmile />
												</div>
											</Tooltip>
										</EmojiPicker>
									{/if}
								</div>
							</div>
						{/if}

						{#if !thread && message.reply_count > 0}
							<div class="flex items-center gap-1.5 -mt-0.5 mb-1.5">
								<button
									class="flex items-center text-xs py-1 text-gray-500 dark:text-gray-400 hover:text-gray-700 dark:hover:text-gray-300 transition"
									on:click={() => {
										onThread(message.id);
									}}
								>
									<span class="font-medium mr-1">
										{$i18n.t('{{COUNT}} Replies', { COUNT: message.reply_count })}</span
									><span>
										{' - '}{$i18n.t('Last reply')}
										{dayjs.unix(message.latest_reply_at / 1000000000).fromNow()}</span
									>

									<span class="ml-1">
										<ChevronRight className="size-2.5" strokeWidth="3" />
									</span>
									<!-- {$i18n.t('View Replies')} -->
								</button>
							</div>
						{/if}
					{/if}
				</div>
			</div>
		</div>
	</div>
{/if}

<style>
	.highlight {
		animation: highlightAnimation 2s ease-in-out;
	}

	@keyframes highlightAnimation {
		0% {
			background-color: rgba(0, 60, 255, 0.1);
		}
		100% {
			background-color: transparent;
		}
	}

	/* Swipe-to-reply styles */
	.swipe-reply-wrapper {
		touch-action: pan-y;
	}

	.swipe-reply-indicator {
		position: absolute;
		left: 8px;
		top: 0;
		bottom: 0;
		display: flex;
		align-items: center;
		justify-content: center;
		z-index: 5;
		pointer-events: none;
	}

	.swipe-reply-icon {
		display: flex;
		align-items: center;
		justify-content: center;
		width: 32px;
		height: 32px;
		border-radius: 50%;
		background-color: rgba(128, 128, 128, 0.15);
		color: rgba(128, 128, 128, 0.8);
		transition:
			background-color 0.15s,
			color 0.15s;
	}

	.swipe-reply-icon--active {
		background-color: rgba(59, 130, 246, 0.2);
		color: rgb(59, 130, 246);
	}

	:global(.dark) .swipe-reply-icon {
		background-color: rgba(200, 200, 200, 0.1);
		color: rgba(200, 200, 200, 0.6);
	}

	:global(.dark) .swipe-reply-icon--active {
		background-color: rgba(96, 165, 250, 0.2);
		color: rgb(96, 165, 250);
	}
</style>