+page.svelte

<script lang="ts">
	import { openDB, deleteDB } from 'idb';
	import { v4 as uuidv4 } from 'uuid';
	import { marked } from 'marked';
	import fileSaver from 'file-saver';
	const { saveAs } = fileSaver;
	import hljs from 'highlight.js';
	import 'highlight.js/styles/github-dark.min.css';
	import auto_render from 'katex/dist/contrib/auto-render.mjs';
	import 'katex/dist/katex.min.css';
	import toast from 'svelte-french-toast';

	import { API_BASE_URL as BUILD_TIME_API_BASE_URL } from '$lib/constants';
	import { onMount, tick } from 'svelte';

	import Navbar from '$lib/components/layout/Navbar.svelte';
	import SettingsModal from '$lib/components/chat/SettingsModal.svelte';
	import Suggestions from '$lib/components/chat/Suggestions.svelte';

	let API_BASE_URL = BUILD_TIME_API_BASE_URL;
	let db;

	let selectedModel = '';
	let settings = {
		system: null,
		temperature: null
	};

	let models = [];
	let chats = [];

	let chatId = uuidv4();
	let title = '';
	let prompt = '';
	let messages = [];

	let showSettings = false;
	let stopResponseFlag = false;
	let autoScroll = true;
	let suggestions = ''; // $page.url.searchParams.get('suggestions');

	onMount(async () => {
		await Promise.all([await createNewChat(true), await setDBandLoadChats()]);
	});

	//////////////////////////
	// Helper functions
	//////////////////////////

	const splitStream = (splitOn) => {
		let buffer = '';
		return new TransformStream({
			transform(chunk, controller) {
				buffer += chunk;
				const parts = buffer.split(splitOn);
				parts.slice(0, -1).forEach((part) => controller.enqueue(part));
				buffer = parts[parts.length - 1];
			},
			flush(controller) {
				if (buffer) controller.enqueue(buffer);
			}
		});
	};

	const copyToClipboard = (text) => {
		if (!navigator.clipboard) {
			var textArea = document.createElement('textarea');
			textArea.value = text;

			// Avoid scrolling to bottom
			textArea.style.top = '0';
			textArea.style.left = '0';
			textArea.style.position = 'fixed';

			document.body.appendChild(textArea);
			textArea.focus();
			textArea.select();

			try {
				var successful = document.execCommand('copy');
				var msg = successful ? 'successful' : 'unsuccessful';
				console.log('Fallback: Copying text command was ' + msg);
			} catch (err) {
				console.error('Fallback: Oops, unable to copy', err);
			}

			document.body.removeChild(textArea);
			return;
		}
		navigator.clipboard.writeText(text).then(
			function () {
				console.log('Async: Copying to clipboard was successful!');
				toast.success('Copying to clipboard was successful!');
			},
			function (err) {
				console.error('Async: Could not copy text: ', err);
			}
		);
	};

	const createCopyCodeBlockButton = () => {
		// use a class selector if available
		let blocks = document.querySelectorAll('pre');
		console.log(blocks);

		blocks.forEach((block) => {
			// only add button if browser supports Clipboard API

			if (navigator.clipboard && block.childNodes.length < 2) {
				let code = block.querySelector('code');
				code.style.borderTopRightRadius = 0;
				code.style.borderTopLeftRadius = 0;

				let topBarDiv = document.createElement('div');
				topBarDiv.style.backgroundColor = '#202123';
				topBarDiv.style.overflowX = 'auto';
				topBarDiv.style.display = 'flex';
				topBarDiv.style.justifyContent = 'space-between';
				topBarDiv.style.padding = '0 1rem';
				topBarDiv.style.paddingTop = '4px';
				topBarDiv.style.borderTopRightRadius = '8px';
				topBarDiv.style.borderTopLeftRadius = '8px';

				let langDiv = document.createElement('div');

				let codeClassNames = code?.className.split(' ');
				langDiv.textContent =
					codeClassNames[0] === 'hljs' ? codeClassNames[1].slice(9) : codeClassNames[0].slice(9);
				langDiv.style.color = 'white';
				langDiv.style.margin = '4px';
				langDiv.style.fontSize = '0.75rem';

				let button = document.createElement('button');
				button.textContent = 'Copy Code';
				button.style.background = 'none';
				button.style.fontSize = '0.75rem';
				button.style.border = 'none';
				button.style.margin = '4px';
				button.style.cursor = 'pointer';
				button.style.color = '#ddd';
				button.addEventListener('click', () => copyCode(block, button));

				topBarDiv.appendChild(langDiv);
				topBarDiv.appendChild(button);

				block.prepend(topBarDiv);

				// button.addEventListener('click', async () => {
				// 	await copyCode(block, button);
				// });
			}
		});

		async function copyCode(block, button) {
			let code = block.querySelector('code');
			let text = code.innerText;

			await navigator.clipboard.writeText(text);

			// visual feedback that task is completed
			button.innerText = 'Copied!';

			setTimeout(() => {
				button.innerText = 'Copy Code';
			}, 1000);
		}
	};

	const renderLatex = () => {
		let chatMessageElements = document.getElementsByClassName('chat-assistant');
		// let lastChatMessageElement = chatMessageElements[chatMessageElements.length - 1];

		for (const element of chatMessageElements) {
			auto_render(element, {
				// customised options
				// • auto-render specific keys, e.g.:
				delimiters: [
					{ left: '$$', right: '$$', display: true },
					{ left: '$', right: '$', display: true },
					{ left: '\\(', right: '\\)', display: true },
					{ left: '\\[', right: '\\]', display: true }
				],
				// • rendering keys, e.g.:
				throwOnError: false
			});
		}
	};

	//////////////////////////
	// Web functions
	//////////////////////////

	const createNewChat = async (init = false) => {
		if (init || messages.length > 0) {
			chatId = uuidv4();
			messages = [];
			title = '';

			settings = JSON.parse(localStorage.getItem('settings') ?? JSON.stringify(settings));

			API_BASE_URL = settings?.API_BASE_URL ?? BUILD_TIME_API_BASE_URL;
			console.log(API_BASE_URL);

			if (models.length === 0) {
				await getModelTags();
			}

			selectedModel =
				settings.model && models.map((model) => model.name).includes(settings.model)
					? settings.model
					: '';

			console.log(chatId);
		}
	};

	const setDBandLoadChats = async () => {
		db = await openDB('Chats', 1, {
			upgrade(db) {
				const store = db.createObjectStore('chats', {
					keyPath: 'id',
					autoIncrement: true
				});
				store.createIndex('timestamp', 'timestamp');
			}
		});

		chats = await db.getAllFromIndex('chats', 'timestamp');
	};

	const saveDefaultModel = () => {
		settings.model = selectedModel;
		localStorage.setItem('settings', JSON.stringify(settings));
		toast.success('Default model updated');
	};

	const saveSettings = async (updated) => {
		console.log(updated);
		settings = { ...settings, ...updated };
		localStorage.setItem('settings', JSON.stringify(settings));
		API_BASE_URL = updated?.API_BASE_URL ?? API_BASE_URL;
		await getModelTags();
	};

	const loadChat = async (id) => {
		const chat = await db.get('chats', id);
		if (chatId !== chat.id) {
			if (chat.messages.length > 0) {
				chat.messages.at(-1).done = true;
			}
			messages = chat.messages;
			title = chat.title;
			chatId = chat.id;
			selectedModel = chat.model ?? selectedModel;
			settings.system = chat.system ?? settings.system;
			settings.temperature = chat.temperature ?? settings.temperature;

			await tick();
			renderLatex();

			hljs.highlightAll();
			createCopyCodeBlockButton();
		}
	};

	const editChatTitle = async (id, _title) => {
		const chat = await db.get('chats', id);
		console.log(chat);

		await db.put('chats', {
			...chat,
			title: _title
		});

		title = _title;
		chats = await db.getAllFromIndex('chats', 'timestamp');
	};

	const deleteChat = async (id) => {
		createNewChat();

		const chat = await db.delete('chats', id);
		console.log(chat);
		chats = await db.getAllFromIndex('chats', 'timestamp');
	};

	const deleteChatHistory = async () => {
		const tx = db.transaction('chats', 'readwrite');
		await Promise.all([tx.store.clear(), tx.done]);
		chats = await db.getAllFromIndex('chats', 'timestamp');
	};

	const importChatHistory = async (chatHistory) => {
		for (const chat of chatHistory) {
			console.log(chat);

			await db.put('chats', {
				id: chat.id,
				model: chat.model,
				system: chat.system,
				options: chat.options,
				title: chat.title,
				timestamp: chat.timestamp,
				messages: chat.messages
			});
		}
		chats = await db.getAllFromIndex('chats', 'timestamp');

		console.log(chats);
	};

	const exportChatHistory = async () => {
		chats = await db.getAllFromIndex('chats', 'timestamp');
		let blob = new Blob([JSON.stringify(chats)], { type: 'application/json' });
		saveAs(blob, `chat-export-${Date.now()}.json`);
	};

	const openSettings = async () => {
		showSettings = true;
	};

	const editMessage = async (messageIdx) => {
		messages = messages.map((message, idx) => {
			if (messageIdx === idx) {
				message.edit = true;
				message.editedContent = message.content;
			}
			return message;
		});
	};

	const confirmEditMessage = async (messageIdx) => {
		let userPrompt = messages.at(messageIdx).editedContent;

		messages.splice(messageIdx, messages.length - messageIdx);
		messages = messages;

		await submitPrompt(userPrompt);
	};

	const cancelEditMessage = (messageIdx) => {
		messages = messages.map((message, idx) => {
			if (messageIdx === idx) {
				message.edit = undefined;
				message.editedContent = undefined;
			}
			return message;
		});

		console.log(messages);
	};

	const rateMessage = async (messageIdx, rating) => {
		messages = messages.map((message, idx) => {
			if (messageIdx === idx) {
				message.rating = rating;
			}
			return message;
		});

		await db.put('chats', {
			id: chatId,
			title: title === '' ? 'New Chat' : title,
			model: selectedModel,
			system: settings.system,
			options: {
				temperature: settings.temperature
			},
			timestamp: Date.now(),
			messages: messages
		});

		console.log(messages);
	};

	//////////////////////////
	// Ollama functions
	//////////////////////////

	const getModelTags = async (url = null, type = 'all') => {
		const res = await fetch(`${url === null ? API_BASE_URL : url}/tags`, {
			method: 'GET',
			headers: {
				Accept: 'application/json',
				'Content-Type': 'application/json'
			}
		})
			.then(async (res) => {
				if (!res.ok) throw await res.json();
				return res.json();
			})
			.catch((error) => {
				console.log(error);
				toast.error('Server connection failed');
				return null;
			});

		console.log(res);

		if (type === 'all') {
			if (settings.OPENAI_API_KEY) {
				// Validate OPENAI_API_KEY
				const openaiModelRes = await fetch(`https://api.openai.com/v1/models`, {
					method: 'GET',
					headers: {
						'Content-Type': 'application/json',
						Authorization: `Bearer ${settings.OPENAI_API_KEY}`
					}
				})
					.then(async (res) => {
						if (!res.ok) throw await res.json();
						return res.json();
					})
					.catch((error) => {
						console.log(error);
						toast.error(`OpenAI: ${error?.error?.message ?? 'Network Problem'}`);
						return null;
					});
				const openaiModels = openaiModelRes?.data ?? null;

				if (openaiModels) {
					models = [
						...(res?.models ?? []),
						{ name: 'hr' },

						...openaiModels
							.map((model) => ({ name: model.id, label: 'OpenAI' }))
							.filter((model) => model.name.includes('gpt'))
					];
				} else {
					models = res?.models ?? [];
				}
			} else {
				models = res?.models ?? [];
			}

			return models;
		} else {
			return res?.models ?? null;
		}
	};

	const sendPrompt = async (userPrompt) => {
		if (selectedModel.includes('gpt-')) {
			await sendPromptOpenAI(userPrompt);
		} else {
			await sendPromptOllama(userPrompt);
		}
	};

	const sendPromptOllama = async (userPrompt) => {
		let responseMessage = {
			role: 'assistant',
			content: ''
		};

		messages = [...messages, responseMessage];
		window.scrollTo({ top: document.body.scrollHeight });

		const res = await fetch(`${API_BASE_URL}/generate`, {
			method: 'POST',
			headers: {
				'Content-Type': 'text/event-stream'
			},
			body: JSON.stringify({
				model: selectedModel,
				prompt: userPrompt,
				system: settings.system ?? undefined,
				options: {
					seed: settings.seed ?? undefined,
					temperature: settings.temperature ?? undefined,
					repeat_penalty: settings.repeat_penalty ?? undefined,
					top_k: settings.top_k ?? undefined,
					top_p: settings.top_p ?? undefined
				},
				format: settings.requestFormat ?? undefined,
				context:
					messages.length > 3 && messages.at(-3).context != undefined
						? messages.at(-3).context
						: undefined
			})
		});

		const reader = res.body
			.pipeThrough(new TextDecoderStream())
			.pipeThrough(splitStream('\n'))
			.getReader();

		while (true) {
			const { value, done } = await reader.read();
			if (done || stopResponseFlag) {
				if (stopResponseFlag) {
					responseMessage.done = true;
					messages = messages;
					hljs.highlightAll();
					createCopyCodeBlockButton();
					renderLatex();
				}

				break;
			}

			try {
				let lines = value.split('\n');

				for (const line of lines) {
					if (line !== '') {
						console.log(line);
						let data = JSON.parse(line);
						if (data.done == false) {
							if (responseMessage.content == '' && data.response == '\n') {
								continue;
							} else {
								responseMessage.content += data.response;
								messages = messages;
							}
						} else {
							responseMessage.done = true;
							responseMessage.context = data.context;
							messages = messages;
							hljs.highlightAll();
							createCopyCodeBlockButton();
							renderLatex();
						}
					}
				}
			} catch (error) {
				console.log(error);
			}

			if (autoScroll) {
				window.scrollTo({ top: document.body.scrollHeight });
			}

			await db.put('chats', {
				id: chatId,
				title: title === '' ? 'New Chat' : title,
				model: selectedModel,
				system: settings.system,
				options: {
					temperature: settings.temperature
				},
				timestamp: Date.now(),
				messages: messages
			});
		}

		stopResponseFlag = false;
		await tick();
		if (autoScroll) {
			window.scrollTo({ top: document.body.scrollHeight });
		}

		if (messages.length == 2) {
			await generateChatTitle(chatId, userPrompt);
		}
	};

	const sendPromptOpenAI = async (userPrompt) => {
		if (settings.OPENAI_API_KEY) {
			if (models) {
				let responseMessage = {
					role: 'assistant',
					content: ''
				};

				messages = [...messages, responseMessage];
				window.scrollTo({ top: document.body.scrollHeight });

				const res = await fetch(`https://api.openai.com/v1/chat/completions`, {
					method: 'POST',
					headers: {
						'Content-Type': 'application/json',
						Authorization: `Bearer ${settings.OPENAI_API_KEY}`
					},
					body: JSON.stringify({
						model: selectedModel,
						stream: true,
						messages: [
							settings.system
								? {
										role: 'system',
										content: settings.system
								  }
								: undefined,
							...messages
						]
							.filter((message) => message)
							.map((message) => ({ ...message, done: undefined })),
						temperature: settings.temperature ?? undefined,
						top_p: settings.top_p ?? undefined,
						frequency_penalty: settings.repeat_penalty ?? undefined
					})
				});

				const reader = res.body
					.pipeThrough(new TextDecoderStream())
					.pipeThrough(splitStream('\n'))
					.getReader();

				while (true) {
					const { value, done } = await reader.read();
					if (done || stopResponseFlag) {
						if (stopResponseFlag) {
							responseMessage.done = true;
							messages = messages;
						}

						break;
					}

					try {
						let lines = value.split('\n');

						for (const line of lines) {
							if (line !== '') {
								console.log(line);
								if (line === 'data: [DONE]') {
									responseMessage.done = true;
									messages = messages;
								} else {
									let data = JSON.parse(line.replace(/^data: /, ''));
									console.log(data);

									if (responseMessage.content == '' && data.choices[0].delta.content == '\n') {
										continue;
									} else {
										responseMessage.content += data.choices[0].delta.content ?? '';
										messages = messages;
									}
								}
							}
						}
					} catch (error) {
						console.log(error);
					}

					if (autoScroll) {
						window.scrollTo({ top: document.body.scrollHeight });
					}

					await db.put('chats', {
						id: chatId,
						title: title === '' ? 'New Chat' : title,
						model: selectedModel,
						system: settings.system,
						options: {
							temperature: settings.temperature
						},
						timestamp: Date.now(),
						messages: messages
					});
				}

				stopResponseFlag = false;

				hljs.highlightAll();
				createCopyCodeBlockButton();
				renderLatex();

				await tick();
				if (autoScroll) {
					window.scrollTo({ top: document.body.scrollHeight });
				}

				if (messages.length == 2) {
					await setChatTitle(chatId, userPrompt);
				}
			}
		}
	};

	const submitPrompt = async (userPrompt) => {
		console.log('submitPrompt');

		if (selectedModel === '') {
			toast.error('Model not selected');
		} else if (messages.length != 0 && messages.at(-1).done != true) {
			console.log('wait');
		} else {
			document.getElementById('chat-textarea').style.height = '';

			messages = [
				...messages,
				{
					role: 'user',
					content: userPrompt
				}
			];

			prompt = '';

			if (messages.length == 0) {
				await db.put('chats', {
					id: chatId,
					model: selectedModel,
					system: settings.system,
					options: {
						temperature: settings.temperature
					},
					title: 'New Chat',
					timestamp: Date.now(),
					messages: messages
				});
				chats = await db.getAllFromIndex('chats', 'timestamp');
			}

			setTimeout(() => {
				window.scrollTo({ top: document.body.scrollHeight, behavior: 'smooth' });
			}, 50);

			await sendPrompt(userPrompt);

			chats = await db.getAllFromIndex('chats', 'timestamp');
		}
	};

	const regenerateResponse = async () => {
		console.log('regenerateResponse');
		if (messages.length != 0 && messages.at(-1).done == true) {
			messages.splice(messages.length - 1, 1);
			messages = messages;

			let userMessage = messages.at(-1);
			let userPrompt = userMessage.content;

			await sendPrompt(userPrompt);

			chats = await db.getAllFromIndex('chats', 'timestamp');
		}
	};

	const stopResponse = () => {
		stopResponseFlag = true;
		console.log('stopResponse');
	};

	const generateChatTitle = async (_chatId, userPrompt) => {
		console.log('generateChatTitle');

		const res = await fetch(`${API_BASE_URL}/generate`, {
			method: 'POST',
			headers: {
				'Content-Type': 'text/event-stream'
			},
			body: JSON.stringify({
				model: selectedModel,
				prompt: `Generate a brief 3-5 word title for this question, excluding the term 'title.' Then, please reply with only the title: ${userPrompt}`,
				stream: false
			})
		})
			.then(async (res) => {
				if (!res.ok) throw await res.json();
				return res.json();
			})
			.catch((error) => {
				console.log(error);
				return null;
			});

		if (res) {
			await setChatTitle(_chatId, res.response === '' ? 'New Chat' : res.response);
		}
	};

	const setChatTitle = async (_chatId, _title) => {
		const chat = await db.get('chats', _chatId);
		await db.put('chats', { ...chat, title: _title });
		if (chat.id === chatId) {
			title = _title;
		}
	};
</script>

<svelte:window
	on:scroll={(e) => {
		autoScroll = window.innerHeight + window.scrollY >= document.body.offsetHeight - 40;
	}}
/>

<div class="app">
	<div
		class=" text-gray-700 dark:text-gray-100 bg-white dark:bg-gray-800 min-h-screen overflow-auto flex flex-row"
	>
		<Navbar
			selectedChatId={chatId}
			{chats}
			{title}
			{loadChat}
			{editChatTitle}
			{deleteChat}
			{createNewChat}
			{importChatHistory}
			{exportChatHistory}
			{deleteChatHistory}
			{openSettings}
		/>

		<SettingsModal bind:show={showSettings} {saveSettings} {getModelTags} />

		<div class="min-h-screen w-full flex justify-center">
			<div class=" py-2.5 flex flex-col justify-between w-full">
				<div class="max-w-2xl mx-auto w-full px-3 md:px-0 mt-14">
					<div class="flex justify-between my-2 text-sm">
						<select
							id="models"
							class="outline-none bg-transparent text-lg font-semibold rounded-lg block w-full placeholder-gray-800"
							bind:value={selectedModel}
							disabled={messages.length != 0}
						>
							<option class=" text-gray-700" value="" selected>Select a model</option>

							{#each models as model}
								{#if model.name === 'hr'}
									<hr />
								{:else}
									<option value={model.name} class="text-gray-700 text-lg">{model.name}</option>
								{/if}
							{/each}
						</select>
						<button
							class=" self-center dark:hover:text-gray-300"
							on:click={() => {
								openSettings();
							}}
						>
							<svg
								xmlns="http://www.w3.org/2000/svg"
								fill="none"
								viewBox="0 0 24 24"
								stroke-width="1.5"
								stroke="currentColor"
								class="w-4 h-4"
							>
								<path
									stroke-linecap="round"
									stroke-linejoin="round"
									d="M10.343 3.94c.09-.542.56-.94 1.11-.94h1.093c.55 0 1.02.398 1.11.94l.149.894c.07.424.384.764.78.93.398.164.855.142 1.205-.108l.737-.527a1.125 1.125 0 011.45.12l.773.774c.39.389.44 1.002.12 1.45l-.527.737c-.25.35-.272.806-.107 1.204.165.397.505.71.93.78l.893.15c.543.09.94.56.94 1.109v1.094c0 .55-.397 1.02-.94 1.11l-.893.149c-.425.07-.765.383-.93.78-.165.398-.143.854.107 1.204l.527.738c.32.447.269 1.06-.12 1.45l-.774.773a1.125 1.125 0 01-1.449.12l-.738-.527c-.35-.25-.806-.272-1.203-.107-.397.165-.71.505-.781.929l-.149.894c-.09.542-.56.94-1.11.94h-1.094c-.55 0-1.019-.398-1.11-.94l-.148-.894c-.071-.424-.384-.764-.781-.93-.398-.164-.854-.142-1.204.108l-.738.527c-.447.32-1.06.269-1.45-.12l-.773-.774a1.125 1.125 0 01-.12-1.45l.527-.737c.25-.35.273-.806.108-1.204-.165-.397-.505-.71-.93-.78l-.894-.15c-.542-.09-.94-.56-.94-1.109v-1.094c0-.55.398-1.02.94-1.11l.894-.149c.424-.07.765-.383.93-.78.165-.398.143-.854-.107-1.204l-.527-.738a1.125 1.125 0 01.12-1.45l.773-.773a1.125 1.125 0 011.45-.12l.737.527c.35.25.807.272 1.204.107.397-.165.71-.505.78-.929l.15-.894z"
								/>
								<path
									stroke-linecap="round"
									stroke-linejoin="round"
									d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"
								/>
							</svg>
						</button>
					</div>

					<!-- <div class="flex flex-col">
						{#each selectedModels as selectedModel, selectedModelIdx}
							<div class="flex">
								<select
									id="models"
									class="outline-none bg-transparent text-lg font-semibold rounded-lg block w-full placeholder-gray-400"
									bind:value={selectedModel}
									disabled={messages.length != 0}
								>
									<option value="" selected>Select a model</option>

									{#each models as model}
										{#if model.name === 'hr'}
											<hr />
										{:else}
											<option value={model.name} class=" text-lg">{model.name}</option>
										{/if}
									{/each}
								</select>

								{#if selectedModelIdx === selectedModels.length - 1}
									<button
										class="  self-center {selectedModelIdx === 0
											? 'mr-3'
											: 'mr-7'} disabled:text-gray-600 disabled:hover:text-gray-600"
										disabled={selectedModels.length === 3}
										on:click={() => {
											if (selectedModels.length < 3) {
												selectedModels = ['', ...selectedModels];
											}
										}}
									>
										<svg
											xmlns="http://www.w3.org/2000/svg"
											fill="none"
											viewBox="0 0 24 24"
											stroke-width="1.5"
											stroke="currentColor"
											class="w-4 h-4"
										>
											<path stroke-linecap="round" stroke-linejoin="round" d="M12 6v12m6-6H6" />
										</svg>
									</button>
								{:else}
									<button
										class="  self-center dark:hover:text-gray-300 {selectedModelIdx === 0
											? 'mr-3'
											: 'mr-7'}"
										on:click={() => {
											selectedModels.splice(selectedModelIdx, 1);
											selectedModels = selectedModels;
										}}
									>
										<svg
											xmlns="http://www.w3.org/2000/svg"
											fill="none"
											viewBox="0 0 24 24"
											stroke-width="1.5"
											stroke="currentColor"
											class="w-4 h-4"
										>
											<path stroke-linecap="round" stroke-linejoin="round" d="M19.5 12h-15" />
										</svg>
									</button>
								{/if}

								{#if selectedModelIdx === 0}
									<button
										class=" self-center dark:hover:text-gray-300"
										on:click={() => {
											openSettings();
										}}
									>
										<svg
											xmlns="http://www.w3.org/2000/svg"
											fill="none"
											viewBox="0 0 24 24"
											stroke-width="1.5"
											stroke="currentColor"
											class="w-4 h-4"
										>
											<path
												stroke-linecap="round"
												stroke-linejoin="round"
												d="M10.343 3.94c.09-.542.56-.94 1.11-.94h1.093c.55 0 1.02.398 1.11.94l.149.894c.07.424.384.764.78.93.398.164.855.142 1.205-.108l.737-.527a1.125 1.125 0 011.45.12l.773.774c.39.389.44 1.002.12 1.45l-.527.737c-.25.35-.272.806-.107 1.204.165.397.505.71.93.78l.893.15c.543.09.94.56.94 1.109v1.094c0 .55-.397 1.02-.94 1.11l-.893.149c-.425.07-.765.383-.93.78-.165.398-.143.854.107 1.204l.527.738c.32.447.269 1.06-.12 1.45l-.774.773a1.125 1.125 0 01-1.449.12l-.738-.527c-.35-.25-.806-.272-1.203-.107-.397.165-.71.505-.781.929l-.149.894c-.09.542-.56.94-1.11.94h-1.094c-.55 0-1.019-.398-1.11-.94l-.148-.894c-.071-.424-.384-.764-.781-.93-.398-.164-.854-.142-1.204.108l-.738.527c-.447.32-1.06.269-1.45-.12l-.773-.774a1.125 1.125 0 01-.12-1.45l.527-.737c.25-.35.273-.806.108-1.204-.165-.397-.505-.71-.93-.78l-.894-.15c-.542-.09-.94-.56-.94-1.109v-1.094c0-.55.398-1.02.94-1.11l.894-.149c.424-.07.765-.383.93-.78.165-.398.143-.854-.107-1.204l-.527-.738a1.125 1.125 0 01.12-1.45l.773-.773a1.125 1.125 0 011.45-.12l.737.527c.35.25.807.272 1.204.107.397-.165.71-.505.78-.929l.15-.894z"
											/>
											<path
												stroke-linecap="round"
												stroke-linejoin="round"
												d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"
											/>
										</svg>
									</button>
								{/if}
							</div>
						{/each}
					</div> -->

					<div class="text-left mt-1.5 text-xs text-gray-500">
						<button on:click={saveDefaultModel}> Set as default</button>
					</div>
				</div>

				<div class=" h-full mt-10 mb-32 w-full flex flex-col">
					{#if messages.length == 0}
						<div class="m-auto text-center max-w-md pb-56 px-2">
							<div class="flex justify-center mt-8">
								<img src="/ollama.png" class=" w-16 invert-[10%] dark:invert-[100%] rounded-full" />
							</div>
							<div class=" mt-1 text-2xl text-gray-800 dark:text-gray-100 font-semibold">
								How can I help you today?
							</div>
						</div>
					{:else}
						{#each messages as message, messageIdx}
							<div class=" w-full">
								<div class="flex justify-between px-5 mb-3 max-w-3xl mx-auto rounded-lg group">
									<div class=" flex w-full">
										<div class=" mr-4">
											<img
												src="{message.role == 'user'
													? settings.gravatarUrl
														? settings.gravatarUrl
														: '/user'
													: '/favicon'}.png"
												class=" max-w-[28px] object-cover rounded-full"
											/>
										</div>

										<div class="w-full">
											<div class=" self-center font-bold mb-0.5">
												{message.role === 'user' ? 'You' : 'Ollama'}
											</div>

											{#if message.role !== 'user' && message.content === ''}
												<div class="w-full mt-3">
													<div class="animate-pulse flex w-full">
														<div class="space-y-2 w-full">
															<div class="h-2 bg-gray-200 dark:bg-gray-600 rounded mr-14" />

															<div class="grid grid-cols-3 gap-4">
																<div class="h-2 bg-gray-200 dark:bg-gray-600 rounded col-span-2" />
																<div class="h-2 bg-gray-200 dark:bg-gray-600 rounded col-span-1" />
															</div>
															<div class="grid grid-cols-4 gap-4">
																<div class="h-2 bg-gray-200 dark:bg-gray-600 rounded col-span-1" />
																<div class="h-2 bg-gray-200 dark:bg-gray-600 rounded col-span-2" />
																<div
																	class="h-2 bg-gray-200 dark:bg-gray-600 rounded col-span-1 mr-4"
																/>
															</div>

															<div class="h-2 bg-gray-200 dark:bg-gray-600 rounded" />
														</div>
													</div>
												</div>
											{:else}
												<div
													class="prose chat-{message.role} w-full max-w-full dark:prose-invert prose-headings:my-0 prose-p:my-0 prose-p:-mb-4 prose-pre:my-0 prose-table:my-0 prose-blockquote:my-0 prose-img:my-0 prose-ul:-my-4 prose-ol:-my-4 prose-li:-my-3 prose-ul:-mb-6 prose-ol:-mb-6 prose-li:-mb-4 whitespace-pre-line"
												>
													{#if message.role == 'user'}
														{#if message?.edit === true}
															<div class=" w-full">
																<textarea
																	class=" bg-transparent outline-none w-full resize-none"
																	bind:value={message.editedContent}
																	on:input={(e) => {
																		e.target.style.height = '';
																		e.target.style.height = `${e.target.scrollHeight}px`;
																	}}
																	on:focus={(e) => {
																		e.target.style.height = '';
																		e.target.style.height = `${e.target.scrollHeight}px`;
																	}}
																/>

																<div class=" flex justify-end space-x-2 text-sm font-medium">
																	<button
																		class="px-4 py-2.5 bg-emerald-600 hover:bg-emerald-700 text-gray-100 transition rounded-lg"
																		on:click={() => {
																			confirmEditMessage(messageIdx);
																		}}
																	>
																		Save & Submit
																	</button>

																	<button
																		class=" px-4 py-2.5 hover:bg-gray-100 dark:bg-gray-800 dark:hover:bg-gray-700 text-gray-700 dark:text-gray-100 transition outline outline-1 outline-gray-200 dark:outline-gray-600 rounded-lg"
																		on:click={() => {
																			cancelEditMessage(messageIdx);
																		}}
																	>
																		Cancel
																	</button>
																</div>
															</div>
														{:else}
															<div class="w-full">
																{message.content}

																<div class=" flex justify-start space-x-1">
																	<button
																		class="invisible group-hover:visible p-1 rounded dark:hover:bg-gray-800 transition"
																		on:click={() => {
																			editMessage(messageIdx);
																		}}
																	>
																		<svg
																			xmlns="http://www.w3.org/2000/svg"
																			fill="none"
																			viewBox="0 0 24 24"
																			stroke-width="1.5"
																			stroke="currentColor"
																			class="w-4 h-4"
																		>
																			<path
																				stroke-linecap="round"
																				stroke-linejoin="round"
																				d="M16.862 4.487l1.687-1.688a1.875 1.875 0 112.652 2.652L6.832 19.82a4.5 4.5 0 01-1.897 1.13l-2.685.8.8-2.685a4.5 4.5 0 011.13-1.897L16.863 4.487zm0 0L19.5 7.125"
																			/>
																		</svg>
																	</button>
																</div>
															</div>
														{/if}
													{:else}
														<div class="w-full">
															{@html marked(message.content.replace('\\\\', '\\\\\\'))}

															{#if message.done}
																<div class=" flex justify-start space-x-1 -mt-2">
																	<button
																		class="{messageIdx + 1 === messages.length
																			? 'visible'
																			: 'invisible group-hover:visible'} p-1 rounded dark:hover:bg-gray-800 transition"
																		on:click={() => {
																			copyToClipboard(message.content);
																		}}
																	>
																		<svg
																			xmlns="http://www.w3.org/2000/svg"
																			fill="none"
																			viewBox="0 0 24 24"
																			stroke-width="1.5"
																			stroke="currentColor"
																			class="w-4 h-4"
																		>
																			<path
																				stroke-linecap="round"
																				stroke-linejoin="round"
																				d="M15.666 3.888A2.25 2.25 0 0013.5 2.25h-3c-1.03 0-1.9.693-2.166 1.638m7.332 0c.055.194.084.4.084.612v0a.75.75 0 01-.75.75H9a.75.75 0 01-.75-.75v0c0-.212.03-.418.084-.612m7.332 0c.646.049 1.288.11 1.927.184 1.1.128 1.907 1.077 1.907 2.185V19.5a2.25 2.25 0 01-2.25 2.25H6.75A2.25 2.25 0 014.5 19.5V6.257c0-1.108.806-2.057 1.907-2.185a48.208 48.208 0 011.927-.184"
																			/>
																		</svg>
																	</button>

																	<button
																		class="{messageIdx + 1 === messages.length
																			? 'visible'
																			: 'invisible group-hover:visible'} p-1 rounded dark:hover:bg-gray-800 transition"
																		on:click={() => {
																			rateMessage(messageIdx, 1);
																		}}
																	>
																		<svg
																			stroke="currentColor"
																			fill="none"
																			stroke-width="2"
																			viewBox="0 0 24 24"
																			stroke-linecap="round"
																			stroke-linejoin="round"
																			class="w-4 h-4"
																			xmlns="http://www.w3.org/2000/svg"
																			><path
																				d="M14 9V5a3 3 0 0 0-3-3l-4 9v11h11.28a2 2 0 0 0 2-1.7l1.38-9a2 2 0 0 0-2-2.3zM7 22H4a2 2 0 0 1-2-2v-7a2 2 0 0 1 2-2h3"
																			/></svg
																		>
																	</button>
																	<button
																		class="{messageIdx + 1 === messages.length
																			? 'visible'
																			: 'invisible group-hover:visible'} p-1 rounded dark:hover:bg-gray-800 transition"
																		on:click={() => {
																			rateMessage(messageIdx, -1);
																		}}
																	>
																		<svg
																			stroke="currentColor"
																			fill="none"
																			stroke-width="2"
																			viewBox="0 0 24 24"
																			stroke-linecap="round"
																			stroke-linejoin="round"
																			class="w-4 h-4"
																			xmlns="http://www.w3.org/2000/svg"
																			><path
																				d="M10 15v4a3 3 0 0 0 3 3l4-9V2H5.72a2 2 0 0 0-2 1.7l-1.38 9a2 2 0 0 0 2 2.3zm7-13h2.67A2.31 2.31 0 0 1 22 4v7a2.31 2.31 0 0 1-2.33 2H17"
																			/></svg
																		>
																	</button>

																	{#if messageIdx + 1 === messages.length}
																		<button
																			class="{messageIdx + 1 === messages.length
																				? 'visible'
																				: 'invisible group-hover:visible'} p-1 rounded dark:hover:bg-gray-800 transition"
																			on:click={regenerateResponse}
																		>
																			<svg
																				xmlns="http://www.w3.org/2000/svg"
																				fill="none"
																				viewBox="0 0 24 24"
																				stroke-width="1.5"
																				stroke="currentColor"
																				class="w-4 h-4"
																			>
																				<path
																					stroke-linecap="round"
																					stroke-linejoin="round"
																					d="M16.023 9.348h4.992v-.001M2.985 19.644v-4.992m0 0h4.992m-4.993 0l3.181 3.183a8.25 8.25 0 0013.803-3.7M4.031 9.865a8.25 8.25 0 0113.803-3.7l3.181 3.182m0-4.991v4.99"
																				/>
																			</svg>
																		</button>
																	{/if}
																</div>
															{/if}
														</div>
													{/if}
												</div>
											{/if}
										</div>
										<!-- {} -->
									</div>
								</div>
							</div>
						{/each}
					{/if}
				</div>
			</div>

			<div class="fixed bottom-0 w-full">
				<div class=" bg-gradient-to-t from-white/90 dark:from-gray-900 pt-5">
					<div class="max-w-3xl p-2.5 -mb-0.5 mx-auto inset-x-0">
						{#if messages.length == 0 && suggestions !== 'false'}
							<Suggestions {submitPrompt} />
						{/if}
						<form
							class=" flex relative w-full"
							on:submit|preventDefault={() => {
								submitPrompt(prompt);
							}}
						>
							<textarea
								id="chat-textarea"
								class="rounded-xl dark:bg-gray-700 dark:text-gray-100 outline-none border dark:border-gray-700 w-full py-3 px-5 pr-12 resize-none"
								placeholder="Send a message"
								bind:value={prompt}
								on:keypress={(e) => {
									if (e.keyCode == 13 && !e.shiftKey) {
										e.preventDefault();
									}
									if (prompt !== '' && e.keyCode == 13 && !e.shiftKey) {
										submitPrompt(prompt);
									}
								}}
								rows="1"
								on:input={(e) => {
									e.target.style.height = '';
									e.target.style.height = Math.min(e.target.scrollHeight, 200) + 2 + 'px';
								}}
							/>
							<div class=" absolute right-0 bottom-0">
								<div class="pr-3 pb-[9px]">
									{#if messages.length == 0 || messages.at(-1).done == true}
										<button
											class="{prompt !== ''
												? 'bg-black text-white hover:bg-gray-900 dark:bg-white dark:text-black dark:hover:bg-gray-100 '
												: 'text-white bg-gray-100 dark:text-gray-800 dark:bg-gray-600 disabled'} transition rounded-lg p-1.5"
											type="submit"
											disabled={prompt === ''}
										>
											<svg
												xmlns="http://www.w3.org/2000/svg"
												viewBox="0 0 20 20"
												fill="currentColor"
												class="w-5 h-5"
											>
												<path
													fill-rule="evenodd"
													d="M10 17a.75.75 0 01-.75-.75V5.612L5.29 9.77a.75.75 0 01-1.08-1.04l5.25-5.5a.75.75 0 011.08 0l5.25 5.5a.75.75 0 11-1.08 1.04l-3.96-4.158V16.25A.75.75 0 0110 17z"
													clip-rule="evenodd"
												/>
											</svg>
										</button>
									{:else}
										<button
											class="bg-white hover:bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-white dark:hover:bg-gray-800 transition rounded-lg p-1.5"
											on:click={stopResponse}
										>
											<svg
												xmlns="http://www.w3.org/2000/svg"
												viewBox="0 0 24 24"
												fill="currentColor"
												class="w-5 h-5"
											>
												<path
													fill-rule="evenodd"
													d="M2.25 12c0-5.385 4.365-9.75 9.75-9.75s9.75 4.365 9.75 9.75-4.365 9.75-9.75 9.75S2.25 17.385 2.25 12zm6-2.438c0-.724.588-1.312 1.313-1.312h4.874c.725 0 1.313.588 1.313 1.313v4.874c0 .725-.588 1.313-1.313 1.313H9.564a1.312 1.312 0 01-1.313-1.313V9.564z"
													clip-rule="evenodd"
												/>
											</svg>
										</button>
									{/if}
								</div>
							</div>
						</form>

						<div class="mt-2.5 text-xs text-gray-500 text-center">
							LLMs can make mistakes. Verify important information.
						</div>
					</div>
				</div>
			</div>
		</div>
	</div>
</div>

<style>
	.loading {
		display: inline-block;
		clip-path: inset(0 1ch 0 0);
		animation: l 1s steps(3) infinite;
		letter-spacing: -0.5px;
	}

	@keyframes l {
		to {
			clip-path: inset(0 -1ch 0 0);
		}
	}

	pre[class*='language-'] {
		position: relative;
		overflow: auto;

		/* make space  */
		margin: 5px 0;
		padding: 1.75rem 0 1.75rem 1rem;
		border-radius: 10px;
	}

	pre[class*='language-'] button {
		position: absolute;
		top: 5px;
		right: 5px;

		font-size: 0.9rem;
		padding: 0.15rem;
		background-color: #828282;

		border: ridge 1px #7b7b7c;
		border-radius: 5px;
		text-shadow: #c4c4c4 0 0 2px;
	}

	pre[class*='language-'] button:hover {
		cursor: pointer;
		background-color: #bcbabb;
	}
</style>