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

	import fileSaver from 'file-saver';
	const { saveAs } = fileSaver;

	import { onMount, getContext, tick } from 'svelte';

	import { WEBUI_NAME, mobile, models, settings, user } from '$lib/stores';
	import { addNewModel, deleteModelById, getModelInfos, updateModelById } from '$lib/apis/models';

	import { deleteModel } from '$lib/apis/ollama';
	import { goto } from '$app/navigation';

	import { getModels } from '$lib/apis';

	import EllipsisHorizontal from '../icons/EllipsisHorizontal.svelte';
	import ModelMenu from './Models/ModelMenu.svelte';
	import ModelDeleteConfirmDialog from '../common/ConfirmDialog.svelte';

	const i18n = getContext('i18n');

	let showModelDeleteConfirm = false;

	let localModelfiles = [];

	let importFiles;
	let modelsImportInputElement: HTMLInputElement;

	let _models = [];
	let selectedModel = null;

	let sortable = null;
	let searchValue = '';

	const deleteModelHandler = async (model) => {
		console.log(model.info);
		if (!model?.info) {
			toast.error(
				$i18n.t('{{ owner }}: You cannot delete a base model', {
					owner: model.owned_by.toUpperCase()
				})
			);
			return null;
		}

		const res = await deleteModelById(localStorage.token, model.id);

		if (res) {
			toast.success($i18n.t(`Deleted {{name}}`, { name: model.id }));
		}

		await models.set(await getModels(localStorage.token));
		_models = $models;
	};

	const cloneModelHandler = async (model) => {
		if ((model?.info?.base_model_id ?? null) === null) {
			toast.error($i18n.t('You cannot clone a base model'));
			return;
		} else {
			sessionStorage.model = JSON.stringify({
				...model,
				id: `${model.id}-clone`,
				name: `${model.name} (Clone)`
			});
			goto('/workspace/models/create');
		}
	};

	const shareModelHandler = async (model) => {
		toast.success($i18n.t('Redirecting you to OpenWebUI Community'));

		const url = 'https://openwebui.com';

		const tab = await window.open(`${url}/models/create`, '_blank');

		// Define the event handler function
		const messageHandler = (event) => {
			if (event.origin !== url) return;
			if (event.data === 'loaded') {
				tab.postMessage(JSON.stringify(model), '*');

				// Remove the event listener after handling the message
				window.removeEventListener('message', messageHandler);
			}
		};

		window.addEventListener('message', messageHandler, false);
	};

	const hideModelHandler = async (model) => {
		let info = model.info;

		if (!info) {
			info = {
				id: model.id,
				name: model.name,
				meta: {
					suggestion_prompts: null
				},
				params: {}
			};
		}

		info.meta = {
			...info.meta,
			hidden: !(info?.meta?.hidden ?? false)
		};

		console.log(info);

		const res = await updateModelById(localStorage.token, info.id, info);

		if (res) {
			toast.success(
				$i18n.t(`Model {{name}} is now {{status}}`, {
					name: info.id,
					status: info.meta.hidden ? 'hidden' : 'visible'
				})
			);
		}

		await models.set(await getModels(localStorage.token));
		_models = $models;
	};

	const downloadModels = async (models) => {
		let blob = new Blob([JSON.stringify(models)], {
			type: 'application/json'
		});
		saveAs(blob, `models-export-${Date.now()}.json`);
	};

	const exportModelHandler = async (model) => {
		let blob = new Blob([JSON.stringify([model])], {
			type: 'application/json'
		});
		saveAs(blob, `${model.id}-${Date.now()}.json`);
	};

	const positionChangeHanlder = async () => {
		// Get the new order of the models
		const modelIds = Array.from(document.getElementById('model-list').children).map((child) =>
			child.id.replace('model-item-', '')
		);

		// Update the position of the models
		for (const [index, id] of modelIds.entries()) {
			const model = $models.find((m) => m.id === id);
			if (model) {
				let info = model.info;

				if (!info) {
					info = {
						id: model.id,
						name: model.name,
						meta: {
							position: index
						},
						params: {}
					};
				}

				info.meta = {
					...info.meta,
					position: index
				};
				await updateModelById(localStorage.token, info.id, info);
			}
		}

		await tick();
		await models.set(await getModels(localStorage.token));
	};

	onMount(async () => {
		// Legacy code to sync localModelfiles with models
		_models = $models;
		localModelfiles = JSON.parse(localStorage.getItem('modelfiles') ?? '[]');

		if (localModelfiles) {
			console.log(localModelfiles);
		}

		if (!$mobile) {
			// SortableJS
			sortable = new Sortable(document.getElementById('model-list'), {
				animation: 150,
				onUpdate: async (event) => {
					console.log(event);
					positionChangeHanlder();
				}
			});
		}
	});
</script>

<svelte:head>
	<title>
		{$i18n.t('Models')} | {$WEBUI_NAME}
	</title>
</svelte:head>

<ModelDeleteConfirmDialog
	bind:show={showModelDeleteConfirm}
	on:confirm={() => {
		deleteModelHandler(selectedModel);
	}}
/>

<div class=" text-lg font-semibold mb-3">{$i18n.t('Models')}</div>

<div class=" flex w-full space-x-2">
	<div class="flex flex-1">
		<div class=" self-center ml-1 mr-3">
			<svg
				xmlns="http://www.w3.org/2000/svg"
				viewBox="0 0 20 20"
				fill="currentColor"
				class="w-4 h-4"
			>
				<path
					fill-rule="evenodd"
					d="M9 3.5a5.5 5.5 0 100 11 5.5 5.5 0 000-11zM2 9a7 7 0 1112.452 4.391l3.328 3.329a.75.75 0 11-1.06 1.06l-3.329-3.328A7 7 0 012 9z"
					clip-rule="evenodd"
				/>
			</svg>
		</div>
		<input
			class=" w-full text-sm pr-4 py-1 rounded-r-xl outline-none bg-transparent"
			bind:value={searchValue}
			placeholder={$i18n.t('Search Models')}
		/>
	</div>

	<div>
		<a
			class=" px-2 py-2 rounded-xl border border-gray-200 dark:border-gray-600 dark:border-0 hover:bg-gray-100 dark:bg-gray-800 dark:hover:bg-gray-700 transition font-medium text-sm flex items-center space-x-1"
			href="/workspace/models/create"
		>
			<svg
				xmlns="http://www.w3.org/2000/svg"
				viewBox="0 0 16 16"
				fill="currentColor"
				class="w-4 h-4"
			>
				<path
					d="M8.75 3.75a.75.75 0 0 0-1.5 0v3.5h-3.5a.75.75 0 0 0 0 1.5h3.5v3.5a.75.75 0 0 0 1.5 0v-3.5h3.5a.75.75 0 0 0 0-1.5h-3.5v-3.5Z"
				/>
			</svg>
		</a>
	</div>
</div>
<hr class=" dark:border-gray-850 my-2.5" />

<a class=" flex space-x-4 cursor-pointer w-full mb-2 px-3 py-2" href="/workspace/models/create">
	<div class=" self-center w-10 flex-shrink-0">
		<div
			class="w-full h-10 flex justify-center rounded-full bg-transparent dark:bg-gray-700 border border-dashed border-gray-200"
		>
			<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" class="w-6">
				<path
					fill-rule="evenodd"
					d="M12 3.75a.75.75 0 01.75.75v6.75h6.75a.75.75 0 010 1.5h-6.75v6.75a.75.75 0 01-1.5 0v-6.75H4.5a.75.75 0 010-1.5h6.75V4.5a.75.75 0 01.75-.75z"
					clip-rule="evenodd"
				/>
			</svg>
		</div>
	</div>

	<div class=" self-center">
		<div class=" font-bold line-clamp-1">{$i18n.t('Create a model')}</div>
		<div class=" text-sm line-clamp-1">{$i18n.t('Customize models for a specific purpose')}</div>
	</div>
</a>

<hr class=" dark:border-gray-850" />

<div class=" my-2 mb-5" id="model-list">
	{#each _models.filter((m) => searchValue === '' || m.name
				.toLowerCase()
				.includes(searchValue.toLowerCase())) as model}
		<div
			class=" flex space-x-4 cursor-pointer w-full px-3 py-2 dark:hover:bg-white/5 hover:bg-black/5 rounded-xl"
			id="model-item-{model.id}"
		>
			<a
				class=" flex flex-1 space-x-3.5 cursor-pointer w-full"
				href={`/?models=${encodeURIComponent(model.id)}`}
			>
				<div class=" self-start w-8 pt-0.5">
					<div
						class=" rounded-full bg-stone-700 {model?.info?.meta?.hidden ?? false
							? 'brightness-90 dark:brightness-50'
							: ''} "
					>
						<img
							src={model?.info?.meta?.profile_image_url ?? '/favicon.png'}
							alt="modelfile profile"
							class=" rounded-full w-full h-auto object-cover"
						/>
					</div>
				</div>

				<div
					class=" flex-1 self-center {model?.info?.meta?.hidden ?? false ? 'text-gray-500' : ''}"
				>
					<div class="  font-bold line-clamp-1">{model.name}</div>
					<div class=" text-xs overflow-hidden text-ellipsis line-clamp-1">
						{!!model?.info?.meta?.description ? model?.info?.meta?.description : model.id}
					</div>
				</div>
			</a>
			<div class="flex flex-row gap-0.5 self-center">
				<a
					class="self-center w-fit text-sm px-2 py-2 dark:text-gray-300 dark:hover:text-white hover:bg-black/5 dark:hover:bg-white/5 rounded-xl"
					type="button"
					href={`/workspace/models/edit?id=${encodeURIComponent(model.id)}`}
				>
					<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 4.487 1.687-1.688a1.875 1.875 0 1 1 2.652 2.652L6.832 19.82a4.5 4.5 0 0 1-1.897 1.13l-2.685.8.8-2.685a4.5 4.5 0 0 1 1.13-1.897L16.863 4.487Zm0 0L19.5 7.125"
						/>
					</svg>
				</a>

				<ModelMenu
					{model}
					shareHandler={() => {
						shareModelHandler(model);
					}}
					cloneHandler={() => {
						cloneModelHandler(model);
					}}
					exportHandler={() => {
						exportModelHandler(model);
					}}
					hideHandler={() => {
						hideModelHandler(model);
					}}
					deleteHandler={() => {
						selectedModel = model;
						showModelDeleteConfirm = true;
					}}
					onClose={() => {}}
				>
					<button
						class="self-center w-fit text-sm p-1.5 dark:text-gray-300 dark:hover:text-white hover:bg-black/5 dark:hover:bg-white/5 rounded-xl"
						type="button"
					>
						<EllipsisHorizontal className="size-5" />
					</button>
				</ModelMenu>
			</div>
		</div>
	{/each}
</div>

<div class=" flex justify-end w-full mb-3">
	<div class="flex space-x-1">
		<input
			id="models-import-input"
			bind:this={modelsImportInputElement}
			bind:files={importFiles}
			type="file"
			accept=".json"
			hidden
			on:change={() => {
				console.log(importFiles);

				let reader = new FileReader();
				reader.onload = async (event) => {
					let savedModels = JSON.parse(event.target.result);
					console.log(savedModels);

					for (const model of savedModels) {
						if (model?.info ?? false) {
							if ($models.find((m) => m.id === model.id)) {
								await updateModelById(localStorage.token, model.id, model.info).catch((error) => {
									return null;
								});
							} else {
								await addNewModel(localStorage.token, model.info).catch((error) => {
									return null;
								});
							}
						}
					}

					await models.set(await getModels(localStorage.token));
					_models = $models;
				};

				reader.readAsText(importFiles[0]);
			}}
		/>

		<button
			class="flex text-xs items-center space-x-1 px-3 py-1.5 rounded-xl bg-gray-50 hover:bg-gray-100 dark:bg-gray-800 dark:hover:bg-gray-700 dark:text-gray-200 transition"
			on:click={() => {
				modelsImportInputElement.click();
			}}
		>
			<div class=" self-center mr-2 font-medium line-clamp-1">{$i18n.t('Import Models')}</div>

			<div class=" self-center">
				<svg
					xmlns="http://www.w3.org/2000/svg"
					viewBox="0 0 16 16"
					fill="currentColor"
					class="w-3.5 h-3.5"
				>
					<path
						fill-rule="evenodd"
						d="M4 2a1.5 1.5 0 0 0-1.5 1.5v9A1.5 1.5 0 0 0 4 14h8a1.5 1.5 0 0 0 1.5-1.5V6.621a1.5 1.5 0 0 0-.44-1.06L9.94 2.439A1.5 1.5 0 0 0 8.878 2H4Zm4 9.5a.75.75 0 0 1-.75-.75V8.06l-.72.72a.75.75 0 0 1-1.06-1.06l2-2a.75.75 0 0 1 1.06 0l2 2a.75.75 0 1 1-1.06 1.06l-.72-.72v2.69a.75.75 0 0 1-.75.75Z"
						clip-rule="evenodd"
					/>
				</svg>
			</div>
		</button>

		<button
			class="flex text-xs items-center space-x-1 px-3 py-1.5 rounded-xl bg-gray-50 hover:bg-gray-100 dark:bg-gray-800 dark:hover:bg-gray-700 dark:text-gray-200 transition"
			on:click={async () => {
				downloadModels($models);
			}}
		>
			<div class=" self-center mr-2 font-medium line-clamp-1">{$i18n.t('Export Models')}</div>

			<div class=" self-center">
				<svg
					xmlns="http://www.w3.org/2000/svg"
					viewBox="0 0 16 16"
					fill="currentColor"
					class="w-3.5 h-3.5"
				>
					<path
						fill-rule="evenodd"
						d="M4 2a1.5 1.5 0 0 0-1.5 1.5v9A1.5 1.5 0 0 0 4 14h8a1.5 1.5 0 0 0 1.5-1.5V6.621a1.5 1.5 0 0 0-.44-1.06L9.94 2.439A1.5 1.5 0 0 0 8.878 2H4Zm4 3.5a.75.75 0 0 1 .75.75v2.69l.72-.72a.75.75 0 1 1 1.06 1.06l-2 2a.75.75 0 0 1-1.06 0l-2-2a.75.75 0 0 1 1.06-1.06l.72.72V6.25A.75.75 0 0 1 8 5.5Z"
						clip-rule="evenodd"
					/>
				</svg>
			</div>
		</button>
	</div>

	{#if localModelfiles.length > 0}
		<div class="flex">
			<div class=" self-center text-sm font-medium mr-4">
				{localModelfiles.length} Local Modelfiles Detected
			</div>

			<div class="flex space-x-1">
				<button
					class="self-center w-fit text-sm p-1.5 border dark:border-gray-600 rounded-xl flex"
					on:click={async () => {
						downloadModels(localModelfiles);

						localStorage.removeItem('modelfiles');
						localModelfiles = JSON.parse(localStorage.getItem('modelfiles') ?? '[]');
					}}
				>
					<div class=" self-center">
						<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="M14.74 9l-.346 9m-4.788 0L9.26 9m9.968-3.21c.342.052.682.107 1.022.166m-1.022-.165L18.16 19.673a2.25 2.25 0 01-2.244 2.077H8.084a2.25 2.25 0 01-2.244-2.077L4.772 5.79m14.456 0a48.108 48.108 0 00-3.478-.397m-12 .562c.34-.059.68-.114 1.022-.165m0 0a48.11 48.11 0 013.478-.397m7.5 0v-.916c0-1.18-.91-2.164-2.09-2.201a51.964 51.964 0 00-3.32 0c-1.18.037-2.09 1.022-2.09 2.201v.916m7.5 0a48.667 48.667 0 00-7.5 0"
							/>
						</svg>
					</div>
				</button>
			</div>
		</div>
	{/if}
</div>

<div class=" my-16">
	<div class=" text-lg font-semibold mb-3 line-clamp-1">
		{$i18n.t('Made by OpenWebUI Community')}
	</div>

	<a
		class=" flex space-x-4 cursor-pointer w-full mb-2 px-3 py-2"
		href="https://openwebui.com/#open-webui-community"
		target="_blank"
	>
		<div class=" self-center w-10 flex-shrink-0">
			<div
				class="w-full h-10 flex justify-center rounded-full bg-transparent dark:bg-gray-700 border border-dashed border-gray-200"
			>
				<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" class="w-6">
					<path
						fill-rule="evenodd"
						d="M12 3.75a.75.75 0 01.75.75v6.75h6.75a.75.75 0 010 1.5h-6.75v6.75a.75.75 0 01-1.5 0v-6.75H4.5a.75.75 0 010-1.5h6.75V4.5a.75.75 0 01.75-.75z"
						clip-rule="evenodd"
					/>
				</svg>
			</div>
		</div>

		<div class=" self-center">
			<div class=" font-bold line-clamp-1">{$i18n.t('Discover a model')}</div>
			<div class=" text-sm line-clamp-1">
				{$i18n.t('Discover, download, and explore model presets')}
			</div>
		</div>
	</a>
</div>
