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

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

	const dispatch = createEventDispatcher();

	import { config, user, models as _models, temporaryChatEnabled } from '$lib/stores';
	import { sanitizeResponseContent, findWordIndices } from '$lib/utils';
	import { WEBUI_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';

	const i18n = getContext('i18n');

	export let transparentBackground = false;

	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 availableToolIds = [];
	export let selectedToolIds = [];
	export let webSearchEnabled = false;

	let models = [];

	const selectSuggestionPrompt = async (p) => {
		let text = p;

		if (p.includes('{{CLIPBOARD}}')) {
			const clipboardText = await navigator.clipboard.readText().catch((err) => {
				toast.error($i18n.t('Failed to read clipboard contents'));
				return '{{CLIPBOARD}}';
			});

			text = p.replaceAll('{{CLIPBOARD}}', clipboardText);

			console.log('Clipboard text:', clipboardText, text);
		}

		prompt = text;

		console.log(prompt);
		await tick();

		const chatInputElement = document.getElementById('chat-textarea');
		if (chatInputElement) {
			chatInputElement.style.height = '';
			chatInputElement.style.height = Math.min(chatInputElement.scrollHeight, 200) + 'px';
			chatInputElement.focus();

			const words = findWordIndices(prompt);

			if (words.length > 0) {
				const word = words.at(0);
				chatInputElement.setSelectionRange(word?.startIndex, word.endIndex + 1);
			}
		}

		await tick();
	};

	let mounted = false;
	let selectedModelIdx = 0;

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

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

	onMount(() => {
		mounted = true;
	});
</script>

{#key mounted}
	<div class="m-auto w-full max-w-6xl px-2 xl:px-20 translate-y-6 py-24 text-center">
		{#if $temporaryChatEnabled}
			<Tooltip
				content="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 font-medium text-lg my-2 w-fit">
					<EyeSlash strokeWidth="2.5" className="size-5" /> Temporary Chat
				</div>
			</Tooltip>
		{/if}

		<div
			class="w-full text-3xl text-gray-800 dark:text-gray-100 font-medium text-center flex items-center gap-4 font-primary"
		>
			<div class="w-full flex flex-col justify-center items-center">
				<div class="flex flex-col md:flex-row justify-center gap-2 md:gap-3.5 w-fit">
					<div class="flex 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
										on:click={() => {
											selectedModelIdx = modelIdx;
										}}
									>
										<img
											crossorigin="anonymous"
											src={model?.info?.meta?.profile_image_url ??
												($i18n.language === 'dg-DG'
													? `/doge.png`
													: `${WEBUI_BASE_URL}/static/favicon.png`)}
											class=" size-[2.5rem] rounded-full border-[1px] border-gray-200 dark:border-none"
											alt="logo"
											draggable="false"
										/>
									</button>
								</Tooltip>
							{/each}
						</div>
					</div>

					<div class=" capitalize line-clamp-1 text-3xl md:text-4xl" in:fade={{ duration: 100 }}>
						{#if models[selectedModelIdx]?.info}
							{models[selectedModelIdx]?.info?.name}
						{: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={marked.parse(
									sanitizeResponseContent(models[selectedModelIdx]?.info?.meta?.description ?? '')
								)}
								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 marked.parse(
										sanitizeResponseContent(models[selectedModelIdx]?.info?.meta?.description)
									)}
								</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://openwebui.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>

				<div
					class="text-base font-normal xl:translate-x-6 md:max-w-3xl w-full py-3 {atSelectedModel
						? 'mt-2'
						: ''}"
				>
					<MessageInput
						{history}
						{selectedModels}
						bind:files
						bind:prompt
						bind:autoScroll
						bind:selectedToolIds
						bind:webSearchEnabled
						bind:atSelectedModel
						{availableToolIds}
						{transparentBackground}
						{stopResponse}
						{createMessagePair}
						placeholder={$i18n.t('How can I help you today?')}
						on:upload={(e) => {
							dispatch('upload', e.detail);
						}}
						on:submit={(e) => {
							dispatch('submit', e.detail);
						}}
					/>
				</div>
			</div>
		</div>
		<div class="mx-auto max-w-2xl font-primary" in:fade={{ duration: 200, delay: 200 }}>
			<div class="mx-5">
				<Suggestions
					suggestionPrompts={models[selectedModelIdx]?.info?.meta?.suggestion_prompts ??
						$config?.default_prompt_suggestions ??
						[]}
					on:select={(e) => {
						selectSuggestionPrompt(e.detail);
					}}
				/>
			</div>
		</div>
	</div>
{/key}
