frontend/src/lib/components/chat/Settings/General.svelte

<script lang="ts">
	import { toast } from "svelte-sonner";
	import { createEventDispatcher, onMount, getContext } from "svelte";
	import { getLanguages, changeLanguage } from "$lib/i18n";
	const dispatch = createEventDispatcher();

	import { config, models, settings, theme, user } from "$lib/stores";

	const i18n = getContext("i18n");

	import AdvancedParams from "./Advanced/AdvancedParams.svelte";
	import Textarea from "$lib/components/common/Textarea.svelte";
	export let saveSettings: Function;
	export let getModels: Function;

	// General
	let themes = ["dark", "light", "oled-dark"];
	let selectedTheme = "system";

	let languages: Awaited<ReturnType<typeof getLanguages>> = [];
	let lang = $i18n.language;
	let notificationEnabled = false;
	let system = "";

	let showAdvanced = false;

	const toggleNotification = async () => {
		const permission = await Notification.requestPermission();

		if (permission === "granted") {
			notificationEnabled = !notificationEnabled;
			saveSettings({ notificationEnabled: notificationEnabled });
		} else {
			toast.error(
				$i18n.t(
					"Response notifications cannot be activated as the website permissions have been denied. Please visit your browser settings to grant the necessary access.",
				),
			);
		}
	};

	let params = {
		// Advanced
		stream_response: null,
		stream_delta_chunk_size: null,
		function_calling: null,
		reasoning_tags: null,
		seed: null,
		temperature: null,
		reasoning_effort: null,
		logit_bias: null,
		frequency_penalty: null,
		presence_penalty: null,
		repeat_penalty: null,
		repeat_last_n: null,
		mirostat: null,
		mirostat_eta: null,
		mirostat_tau: null,
		top_k: null,
		top_p: null,
		min_p: null,
		stop: null,
		tfs_z: null,
		num_ctx: null,
		num_batch: null,
		num_keep: null,
		max_tokens: null,
		use_mmap: null,
		use_mlock: null,
		num_thread: null,
		num_gpu: null,
		think: null,
		format: null,
		keep_alive: null,
	};

	const saveHandler = async () => {
		saveSettings({
			system: system !== "" ? system : undefined,
			params: {
				stream_response:
					params.stream_response !== null
						? params.stream_response
						: undefined,
				stream_delta_chunk_size:
					params.stream_delta_chunk_size !== null
						? params.stream_delta_chunk_size
						: undefined,
				function_calling:
					params.function_calling !== null
						? params.function_calling
						: undefined,
				reasoning_tags:
					params.reasoning_tags !== null
						? params.reasoning_tags
						: undefined,
				seed:
					(params.seed !== null ? params.seed : undefined) ??
					undefined,
				stop: params.stop
					? params.stop.split(",").filter((e) => e)
					: undefined,
				temperature:
					params.temperature !== null
						? params.temperature
						: undefined,
				reasoning_effort:
					params.reasoning_effort !== null
						? params.reasoning_effort
						: undefined,
				logit_bias:
					params.logit_bias !== null ? params.logit_bias : undefined,
				frequency_penalty:
					params.frequency_penalty !== null
						? params.frequency_penalty
						: undefined,
				presence_penalty:
					params.presence_penalty !== null
						? params.presence_penalty
						: undefined,
				repeat_penalty:
					params.repeat_penalty !== null
						? params.repeat_penalty
						: undefined,
				repeat_last_n:
					params.repeat_last_n !== null
						? params.repeat_last_n
						: undefined,
				mirostat:
					params.mirostat !== null ? params.mirostat : undefined,
				mirostat_eta:
					params.mirostat_eta !== null
						? params.mirostat_eta
						: undefined,
				mirostat_tau:
					params.mirostat_tau !== null
						? params.mirostat_tau
						: undefined,
				top_k: params.top_k !== null ? params.top_k : undefined,
				top_p: params.top_p !== null ? params.top_p : undefined,
				min_p: params.min_p !== null ? params.min_p : undefined,
				tfs_z: params.tfs_z !== null ? params.tfs_z : undefined,
				num_ctx: params.num_ctx !== null ? params.num_ctx : undefined,
				num_batch:
					params.num_batch !== null ? params.num_batch : undefined,
				num_keep:
					params.num_keep !== null ? params.num_keep : undefined,
				max_tokens:
					params.max_tokens !== null ? params.max_tokens : undefined,
				use_mmap:
					params.use_mmap !== null ? params.use_mmap : undefined,
				use_mlock:
					params.use_mlock !== null ? params.use_mlock : undefined,
				num_thread:
					params.num_thread !== null ? params.num_thread : undefined,
				num_gpu: params.num_gpu !== null ? params.num_gpu : undefined,
				think: params.think !== null ? params.think : undefined,
				keep_alive:
					params.keep_alive !== null ? params.keep_alive : undefined,
				format: params.format !== null ? params.format : undefined,
				...(params.custom_params &&
				Object.keys(params.custom_params).length > 0
					? { custom_params: params.custom_params }
					: {}),
			},
		});
		dispatch("save");
	};

	onMount(async () => {
		selectedTheme = localStorage.theme ?? "system";

		languages = await getLanguages();

		if (!$config?.features?.enable_easter_eggs) {
			languages = languages.filter((l) => l.code !== "dg-DG");
		}

		notificationEnabled = $settings.notificationEnabled ?? false;
		system = $settings.system ?? "";

		params = { ...params, ...$settings.params };
		params.stop = $settings?.params?.stop
			? ($settings?.params?.stop ?? []).join(",")
			: null;
	});

	const applyTheme = (_theme: string) => {
		let themeToApply =
			_theme === "oled-dark"
				? "dark"
				: _theme === "her"
					? "light"
					: _theme;

		if (_theme === "system") {
			themeToApply = window.matchMedia("(prefers-color-scheme: dark)")
				.matches
				? "dark"
				: "light";
		}

		if (themeToApply === "dark" && !_theme.includes("oled")) {
			document.documentElement.style.setProperty(
				"--color-gray-800",
				"#333",
			);
			document.documentElement.style.setProperty(
				"--color-gray-850",
				"#262626",
			);
			document.documentElement.style.setProperty(
				"--color-gray-900",
				"#171717",
			);
			document.documentElement.style.setProperty(
				"--color-gray-950",
				"#0d0d0d",
			);
		}

		themes
			.filter((e) => e !== themeToApply)
			.forEach((e) => {
				e.split(" ").forEach((e) => {
					document.documentElement.classList.remove(e);
				});
			});

		themeToApply.split(" ").forEach((e) => {
			document.documentElement.classList.add(e);
		});

		const metaThemeColor = document.querySelector(
			'meta[name="theme-color"]',
		);
		if (metaThemeColor) {
			if (_theme.includes("system")) {
				const systemTheme = window.matchMedia(
					"(prefers-color-scheme: dark)",
				).matches
					? "dark"
					: "light";
				console.log("Setting system meta theme color: " + systemTheme);
				metaThemeColor.setAttribute(
					"content",
					systemTheme === "light" ? "#ffffff" : "#171717",
				);
			} else {
				console.log("Setting meta theme color: " + _theme);
				metaThemeColor.setAttribute(
					"content",
					_theme === "dark"
						? "#171717"
						: _theme === "oled-dark"
							? "#000000"
							: _theme === "her"
								? "#983724"
								: "#ffffff",
				);
			}
		}

		if (typeof window !== "undefined" && window.applyTheme) {
			window.applyTheme();
		}

		if (_theme.includes("oled")) {
			document.documentElement.style.setProperty(
				"--color-gray-800",
				"#101010",
			);
			document.documentElement.style.setProperty(
				"--color-gray-850",
				"#050505",
			);
			document.documentElement.style.setProperty(
				"--color-gray-900",
				"#000000",
			);
			document.documentElement.style.setProperty(
				"--color-gray-950",
				"#000000",
			);
			document.documentElement.classList.add("dark");
		}

		console.log(_theme);
	};

	const themeChangeHandler = (_theme: string) => {
		theme.set(_theme);
		localStorage.setItem("theme", _theme);
		applyTheme(_theme);
	};
</script>

<div class="flex flex-col h-full justify-between text-sm" id="tab-general">
	<div class="  overflow-y-scroll max-h-[28rem] md:max-h-full">
		<div class="">
			<div class=" mb-1 text-sm font-medium">
				{$i18n.t("rexpro Settings")}
			</div>

			<div class="flex w-full justify-between">
				<div class=" self-center text-xs font-medium">
					{$i18n.t("Theme")}
				</div>
				<div class="flex items-center relative">
					<select
						class="w-fit pr-8 rounded-sm py-2 px-2 text-xs bg-transparent text-right {$settings.highContrastMode
							? ''
							: 'outline-hidden'}"
						bind:value={selectedTheme}
						placeholder={$i18n.t("Select a theme")}
						on:change={() => themeChangeHandler(selectedTheme)}
					>
						<option value="system">⚙️ {$i18n.t("System")}</option>
						<option value="dark">🌑 {$i18n.t("Dark")}</option>
						<option value="oled-dark"
							>🌃 {$i18n.t("OLED Dark")}</option
						>
						<option value="light">☀️ {$i18n.t("Light")}</option>
						{#if $config?.features?.enable_easter_eggs}
							<option value="her">🌷 Her</option>
						{/if}
					</select>
				</div>
			</div>

			<div class=" flex w-full justify-between">
				<div class=" self-center text-xs font-medium">
					{$i18n.t("Language")}
				</div>
				<div class="flex items-center relative">
					<select
						class="w-fit pr-8 rounded-sm py-2 px-2 text-xs bg-transparent text-right {$settings.highContrastMode
							? ''
							: 'outline-hidden'}"
						bind:value={lang}
						placeholder={$i18n.t("Select a language")}
						on:change={(e) => {
							changeLanguage(lang);
						}}
					>
						{#each languages as language}
							<option value={language["code"]}
								>{language["title"]}</option
							>
						{/each}
					</select>
				</div>
			</div>
			{#if $i18n.language === "en-US" && !($config?.license_metadata ?? false)}
				<div
					class="mb-2 text-xs {($settings?.highContrastMode ?? false)
						? 'text-gray-800 dark:text-gray-100'
						: 'text-gray-400 dark:text-gray-500'}"
				>
					Couldn't find your language?
					<a
						class="font-medium underline {($settings?.highContrastMode ??
						false)
							? 'text-gray-700 dark:text-gray-200'
							: 'text-gray-300'}"
						href="https://github.com/rexpro-ai/rexpro-ai/blob/main/docs/CONTRIBUTING.md#-translations-and-internationalization"
						target="_blank"
					>
						Help us translate rexpro-ai!
					</a>
				</div>
			{/if}

			<div>
				<div class=" py-0.5 flex w-full justify-between">
					<div class=" self-center text-xs font-medium">
						{$i18n.t("Notifications")}
					</div>

					<button
						class="p-1 px-3 text-xs flex rounded-sm transition"
						on:click={() => {
							toggleNotification();
						}}
						type="button"
						role="switch"
						aria-checked={notificationEnabled}
					>
						{#if notificationEnabled === true}
							<span class="ml-2 self-center">{$i18n.t("On")}</span
							>
						{:else}
							<span class="ml-2 self-center"
								>{$i18n.t("Off")}</span
							>
						{/if}
					</button>
				</div>
			</div>
		</div>

		{#if $user?.role === "admin" || (($user?.permissions.chat?.controls ?? true) && ($user?.permissions.chat?.system_prompt ?? true))}
			<hr class="border-gray-100/30 dark:border-gray-850/30 my-3" />

			<div>
				<div class=" my-2.5 text-sm font-medium">
					{$i18n.t("System Prompt")}
				</div>
				<Textarea
					bind:value={system}
					className={"w-full text-sm outline-hidden resize-vertical" +
						($settings.highContrastMode
							? " p-2.5 border-2 border-gray-300 dark:border-gray-700 rounded-lg bg-transparent text-gray-900 dark:text-gray-100 focus:ring-1 focus:ring-blue-500 focus:border-blue-500 overflow-y-hidden"
							: "  dark:text-gray-300 ")}
					rows="4"
					placeholder={$i18n.t("Enter system prompt here")}
				/>
			</div>
		{/if}

		{#if $user?.role === "admin" || (($user?.permissions.chat?.controls ?? true) && ($user?.permissions.chat?.params ?? true))}
			<div class="mt-2 space-y-3 pr-1.5">
				<div class="flex justify-between items-center text-sm">
					<div class="  font-medium">
						{$i18n.t("Advanced Parameters")}
					</div>
					<button
						class=" text-xs font-medium {($settings?.highContrastMode ??
						false)
							? 'text-gray-800 dark:text-gray-100'
							: 'text-gray-400 dark:text-gray-500'}"
						type="button"
						aria-expanded={showAdvanced}
						on:click={() => {
							showAdvanced = !showAdvanced;
						}}
						>{showAdvanced
							? $i18n.t("Hide")
							: $i18n.t("Show")}</button
					>
				</div>

				{#if showAdvanced}
					<AdvancedParams
						admin={$user?.role === "admin"}
						custom={true}
						bind:params
					/>
				{/if}
			</div>
		{/if}
	</div>

	<div class="flex justify-end pt-3 text-sm font-medium">
		<button
			class="px-3.5 py-1.5 text-sm font-medium bg-black hover:bg-gray-900 text-white dark:bg-white dark:text-black dark:hover:bg-gray-100 transition rounded-full"
			on:click={() => {
				saveHandler();
			}}
		>
			{$i18n.t("Save")}
		</button>
	</div>
</div>