<script lang="ts">
	import { toast } from 'svelte-sonner';
	import fileSaver from 'file-saver';
	const { saveAs } = fileSaver;

	import { onMount } from 'svelte';
	import { documents } from '$lib/stores';
	import { createNewDoc, deleteDocByName, getDocs } from '$lib/apis/documents';

	import { SUPPORTED_FILE_TYPE, SUPPORTED_FILE_EXTENSIONS } from '$lib/constants';
	import { uploadDocToVectorDB } from '$lib/apis/rag';
	import { transformFileName } from '$lib/utils';

	import Checkbox from '$lib/components/common/Checkbox.svelte';

	import EditDocModal from '$lib/components/documents/EditDocModal.svelte';
	import AddFilesPlaceholder from '$lib/components/AddFilesPlaceholder.svelte';
	import SettingsModal from '$lib/components/documents/SettingsModal.svelte';
	import AddDocModal from '$lib/components/documents/AddDocModal.svelte';
	let importFiles = '';

	let inputFiles = '';
	let query = '';

	let tags = [];

	let showSettingsModal = false;
	let showAddDocModal = false;
	let showEditDocModal = false;
	let selectedDoc;
	let selectedTag = '';

	let dragged = false;

	const deleteDoc = async (name) => {
		await deleteDocByName(localStorage.token, name);
		await documents.set(await getDocs(localStorage.token));
	};

	const deleteDocs = async (docs) => {
		const res = await Promise.all(
			docs.map(async (doc) => {
				return await deleteDocByName(localStorage.token, doc.name);
			})
		);

		await documents.set(await getDocs(localStorage.token));
	};

	const uploadDoc = async (file) => {
		const res = await uploadDocToVectorDB(localStorage.token, '', file).catch((error) => {
			toast.error(error);
			return null;
		});

		if (res) {
			await createNewDoc(
				localStorage.token,
				res.collection_name,
				res.filename,
				transformFileName(res.filename),
				res.filename
			).catch((error) => {
				toast.error(error);
				return null;
			});
			await documents.set(await getDocs(localStorage.token));
		}
	};

	onMount(() => {
		documents.subscribe((docs) => {
			tags = docs.reduce((a, e, i, arr) => {
				return [...new Set([...a, ...(e?.content?.tags ?? []).map((tag) => tag.name)])];
			}, []);
		});
		const dropZone = document.querySelector('body');

		const onDragOver = (e) => {
			e.preventDefault();
			dragged = true;
		};

		const onDragLeave = () => {
			dragged = false;
		};

		const onDrop = async (e) => {
			e.preventDefault();
			console.log(e);

			if (e.dataTransfer?.files) {
				let reader = new FileReader();

				reader.onload = (event) => {
					files = [
						...files,
						{
							type: 'image',
							url: `${event.target.result}`
						}
					];
				};

				const inputFiles = e.dataTransfer?.files;

				if (inputFiles && inputFiles.length > 0) {
					for (const file of inputFiles) {
						console.log(file, file.name.split('.').at(-1));
						if (
							SUPPORTED_FILE_TYPE.includes(file['type']) ||
							SUPPORTED_FILE_EXTENSIONS.includes(file.name.split('.').at(-1))
						) {
							uploadDoc(file);
						} else {
							toast.error(
								`Unknown File Type '${file['type']}', but accepting and treating as plain text`
							);
							uploadDoc(file);
						}
					}
				} else {
					toast.error(`File not found.`);
				}
			}

			dragged = false;
		};

		dropZone?.addEventListener('dragover', onDragOver);
		dropZone?.addEventListener('drop', onDrop);
		dropZone?.addEventListener('dragleave', onDragLeave);

		return () => {
			dropZone?.removeEventListener('dragover', onDragOver);
			dropZone?.removeEventListener('drop', onDrop);
			dropZone?.removeEventListener('dragleave', onDragLeave);
		};
	});

	let filteredDocs;

	$: filteredDocs = $documents.filter(
		(doc) =>
			(selectedTag === '' ||
				(doc?.content?.tags ?? []).map((tag) => tag.name).includes(selectedTag)) &&
			(query === '' || doc.name.includes(query))
	);
</script>

{#if dragged}
	<div
		class="fixed w-full h-full flex z-50 touch-none pointer-events-none"
		id="dropzone"
		role="region"
		aria-label="Drag and Drop Container"
	>
		<div class="absolute rounded-xl w-full h-full backdrop-blur bg-gray-800/40 flex justify-center">
			<div class="m-auto pt-64 flex flex-col justify-center">
				<div class="max-w-md">
					<AddFilesPlaceholder>
						<div class=" mt-2 text-center text-sm dark:text-gray-200 w-full">
							Drop any files here to add to my documents
						</div>
					</AddFilesPlaceholder>
				</div>
			</div>
		</div>
	</div>
{/if}

{#key selectedDoc}
	<EditDocModal bind:show={showEditDocModal} {selectedDoc} />
{/key}

<AddDocModal bind:show={showAddDocModal} />

<SettingsModal bind:show={showSettingsModal} />

<div class="min-h-screen max-h-[100dvh] w-full flex justify-center dark:text-white">
	<div class=" flex flex-col justify-between w-full overflow-y-auto">
		<div class="max-w-2xl mx-auto w-full px-3 md:px-0 my-10">
			<div class="mb-6">
				<div class="flex justify-between items-center">
					<div class=" text-2xl font-semibold self-center">My Documents</div>

					<div>
						<button
							class="flex 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 transition"
							type="button"
							on:click={() => {
								showSettingsModal = !showSettingsModal;
							}}
						>
							<svg
								xmlns="http://www.w3.org/2000/svg"
								viewBox="0 0 16 16"
								fill="currentColor"
								class="w-4 h-4"
							>
								<path
									fill-rule="evenodd"
									d="M6.955 1.45A.5.5 0 0 1 7.452 1h1.096a.5.5 0 0 1 .497.45l.17 1.699c.484.12.94.312 1.356.562l1.321-1.081a.5.5 0 0 1 .67.033l.774.775a.5.5 0 0 1 .034.67l-1.08 1.32c.25.417.44.873.561 1.357l1.699.17a.5.5 0 0 1 .45.497v1.096a.5.5 0 0 1-.45.497l-1.699.17c-.12.484-.312.94-.562 1.356l1.082 1.322a.5.5 0 0 1-.034.67l-.774.774a.5.5 0 0 1-.67.033l-1.322-1.08c-.416.25-.872.44-1.356.561l-.17 1.699a.5.5 0 0 1-.497.45H7.452a.5.5 0 0 1-.497-.45l-.17-1.699a4.973 4.973 0 0 1-1.356-.562L4.108 13.37a.5.5 0 0 1-.67-.033l-.774-.775a.5.5 0 0 1-.034-.67l1.08-1.32a4.971 4.971 0 0 1-.561-1.357l-1.699-.17A.5.5 0 0 1 1 8.548V7.452a.5.5 0 0 1 .45-.497l1.699-.17c.12-.484.312-.94.562-1.356L2.629 4.107a.5.5 0 0 1 .034-.67l.774-.774a.5.5 0 0 1 .67-.033L5.43 3.71a4.97 4.97 0 0 1 1.356-.561l.17-1.699ZM6 8c0 .538.212 1.026.558 1.385l.057.057a2 2 0 0 0 2.828-2.828l-.058-.056A2 2 0 0 0 6 8Z"
									clip-rule="evenodd"
								/>
							</svg>

							<div class=" text-xs">Document Settings</div>
						</button>
					</div>
				</div>
				<div class=" text-gray-500 text-xs mt-1">
					ⓘ Use '#' in the prompt input to load and select your documents.
				</div>
			</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={query}
						placeholder="Search Document"
					/>
				</div>

				<div>
					<button
						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"
						on:click={() => {
							showAddDocModal = true;
						}}
					>
						<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>
					</button>
				</div>
			</div>

			<!-- <div>
				<div
					class="my-3 py-16 rounded-lg border-2 border-dashed dark:border-gray-600 {dragged &&
						' dark:bg-gray-700'} "
					role="region"
					on:drop={onDrop}
					on:dragover={onDragOver}
					on:dragleave={onDragLeave}
				>
					<div class="  pointer-events-none">
						<div class="text-center dark:text-white text-2xl font-semibold z-50">Add Files</div>

						<div class=" mt-2 text-center text-sm dark:text-gray-200 w-full">
							Drop any files here to add to my documents
						</div>
					</div>
				</div>
			</div> -->

			<hr class=" dark:border-gray-700 my-2.5" />

			{#if tags.length > 0}
				<div class="px-2.5 pt-1 flex gap-1 flex-wrap">
					<div class="ml-0.5 pr-3 my-auto flex items-center">
						<Checkbox
							state={filteredDocs.filter((doc) => doc?.selected === 'checked').length ===
							filteredDocs.length
								? 'checked'
								: 'unchecked'}
							indeterminate={filteredDocs.filter((doc) => doc?.selected === 'checked').length > 0 &&
								filteredDocs.filter((doc) => doc?.selected === 'checked').length !==
									filteredDocs.length}
							on:change={(e) => {
								if (e.detail === 'checked') {
									filteredDocs = filteredDocs.map((doc) => ({ ...doc, selected: 'checked' }));
								} else if (e.detail === 'unchecked') {
									filteredDocs = filteredDocs.map((doc) => ({ ...doc, selected: 'unchecked' }));
								}
							}}
						/>
					</div>

					{#if filteredDocs.filter((doc) => doc?.selected === 'checked').length === 0}
						<button
							class="px-2 py-0.5 space-x-1 flex h-fit items-center rounded-full transition bg-gray-50 hover:bg-gray-100 dark:bg-gray-800 dark:text-white"
							on:click={async () => {
								selectedTag = '';
								// await chats.set(await getChatListByTagName(localStorage.token, tag.name));
							}}
						>
							<div class=" text-xs font-medium self-center line-clamp-1">all</div>
						</button>

						{#each tags as tag}
							<button
								class="px-2 py-0.5 space-x-1 flex h-fit items-center rounded-full transition bg-gray-50 hover:bg-gray-100 dark:bg-gray-800 dark:text-white"
								on:click={async () => {
									selectedTag = tag;
									// await chats.set(await getChatListByTagName(localStorage.token, tag.name));
								}}
							>
								<div class=" text-xs font-medium self-center line-clamp-1">
									#{tag}
								</div>
							</button>
						{/each}
					{:else}
						<div class="flex-1 flex w-full justify-between items-center">
							<div class="text-xs font-medium py-0.5 self-center mr-1">
								{filteredDocs.filter((doc) => doc?.selected === 'checked').length} Selected
							</div>

							<div class="flex gap-1">
								<!-- <button
									class="px-2 py-0.5 space-x-1 flex h-fit items-center rounded-full transition bg-gray-50 hover:bg-gray-100 dark:bg-gray-800 dark:text-white"
									on:click={async () => {
										selectedTag = '';
										// await chats.set(await getChatListByTagName(localStorage.token, tag.name));
									}}
								>
									<div class=" text-xs font-medium self-center line-clamp-1">add tags</div>
								</button> -->

								<button
									class="px-2 py-0.5 space-x-1 flex h-fit items-center rounded-full transition bg-gray-50 hover:bg-gray-100 dark:bg-gray-800 dark:text-white"
									on:click={async () => {
										deleteDocs(filteredDocs.filter((doc) => doc.selected === 'checked'));
										// await chats.set(await getChatListByTagName(localStorage.token, tag.name));
									}}
								>
									<div class=" text-xs font-medium self-center line-clamp-1">delete</div>
								</button>
							</div>
						</div>
					{/if}
				</div>
			{/if}

			<div class="my-3 mb-5">
				{#each filteredDocs as doc}
					<button
						class=" flex space-x-4 cursor-pointer text-left w-full px-3 py-2 dark:hover:bg-white/5 hover:bg-black/5 rounded-xl"
						on:click={() => {
							if (doc?.selected === 'checked') {
								doc.selected = 'unchecked';
							} else {
								doc.selected = 'checked';
							}
						}}
					>
						<div class="my-auto flex items-center">
							<Checkbox state={doc?.selected ?? 'unchecked'} />
						</div>
						<div class=" flex flex-1 space-x-4 cursor-pointer w-full">
							<div class=" flex items-center space-x-3">
								<div class="p-2.5 bg-red-400 text-white rounded-lg">
									{#if doc}
										<svg
											xmlns="http://www.w3.org/2000/svg"
											viewBox="0 0 24 24"
											fill="currentColor"
											class="w-6 h-6"
										>
											<path
												fill-rule="evenodd"
												d="M5.625 1.5c-1.036 0-1.875.84-1.875 1.875v17.25c0 1.035.84 1.875 1.875 1.875h12.75c1.035 0 1.875-.84 1.875-1.875V12.75A3.75 3.75 0 0 0 16.5 9h-1.875a1.875 1.875 0 0 1-1.875-1.875V5.25A3.75 3.75 0 0 0 9 1.5H5.625ZM7.5 15a.75.75 0 0 1 .75-.75h7.5a.75.75 0 0 1 0 1.5h-7.5A.75.75 0 0 1 7.5 15Zm.75 2.25a.75.75 0 0 0 0 1.5H12a.75.75 0 0 0 0-1.5H8.25Z"
												clip-rule="evenodd"
											/>
											<path
												d="M12.971 1.816A5.23 5.23 0 0 1 14.25 5.25v1.875c0 .207.168.375.375.375H16.5a5.23 5.23 0 0 1 3.434 1.279 9.768 9.768 0 0 0-6.963-6.963Z"
											/>
										</svg>
									{:else}
										<svg
											class=" w-6 h-6 translate-y-[0.5px]"
											fill="currentColor"
											viewBox="0 0 24 24"
											xmlns="http://www.w3.org/2000/svg"
											><style>
												.spinner_qM83 {
													animation: spinner_8HQG 1.05s infinite;
												}
												.spinner_oXPr {
													animation-delay: 0.1s;
												}
												.spinner_ZTLf {
													animation-delay: 0.2s;
												}
												@keyframes spinner_8HQG {
													0%,
													57.14% {
														animation-timing-function: cubic-bezier(0.33, 0.66, 0.66, 1);
														transform: translate(0);
													}
													28.57% {
														animation-timing-function: cubic-bezier(0.33, 0, 0.66, 0.33);
														transform: translateY(-6px);
													}
													100% {
														transform: translate(0);
													}
												}
											</style><circle class="spinner_qM83" cx="4" cy="12" r="2.5" /><circle
												class="spinner_qM83 spinner_oXPr"
												cx="12"
												cy="12"
												r="2.5"
											/><circle class="spinner_qM83 spinner_ZTLf" cx="20" cy="12" r="2.5" /></svg
										>
									{/if}
								</div>
								<div class=" self-center flex-1">
									<div class=" font-bold line-clamp-1">#{doc.name} ({doc.filename})</div>
									<div class=" text-xs overflow-hidden text-ellipsis line-clamp-1">
										{doc.title}
									</div>
								</div>
							</div>
						</div>
						<div class="flex flex-row space-x-1 self-center">
							<button
								class="self-center w-fit text-sm z-20 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"
								on:click={async (e) => {
									e.stopPropagation();
									showEditDocModal = !showEditDocModal;
									selectedDoc = doc;
								}}
							>
								<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>

							<!-- <button
						class="self-center w-fit text-sm px-2 py-2 border dark:border-gray-600 rounded-xl"
						type="button"
						on:click={() => {
							console.log('download file');
						}}
					>
						<svg
							xmlns="http://www.w3.org/2000/svg"
							viewBox="0 0 16 16"
							fill="currentColor"
							class="w-4 h-4"
						>
							<path
								d="M8.75 2.75a.75.75 0 0 0-1.5 0v5.69L5.03 6.22a.75.75 0 0 0-1.06 1.06l3.5 3.5a.75.75 0 0 0 1.06 0l3.5-3.5a.75.75 0 0 0-1.06-1.06L8.75 8.44V2.75Z"
							/>
							<path
								d="M3.5 9.75a.75.75 0 0 0-1.5 0v1.5A2.75 2.75 0 0 0 4.75 14h6.5A2.75 2.75 0 0 0 14 11.25v-1.5a.75.75 0 0 0-1.5 0v1.5c0 .69-.56 1.25-1.25 1.25h-6.5c-.69 0-1.25-.56-1.25-1.25v-1.5Z"
							/>
						</svg>
					</button> -->

							<button
								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"
								on:click={(e) => {
									e.stopPropagation();

									deleteDoc(doc.name);
								}}
							>
								<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>
							</button>
						</div>
					</button>
				{/each}
			</div>

			<div class=" flex justify-end w-full mb-2">
				<div class="flex space-x-2">
					<input
						id="documents-import-input"
						bind:files={importFiles}
						type="file"
						accept=".json"
						hidden
						on:change={() => {
							console.log(importFiles);

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

								for (const doc of savedDocs) {
									await createNewDoc(
										localStorage.token,
										doc.collection_name,
										doc.filename,
										doc.name,
										doc.title
									).catch((error) => {
										toast.error(error);
										return null;
									});
								}

								await documents.set(await getDocs(localStorage.token));
							};

							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={async () => {
							document.getElementById('documents-import-input')?.click();
						}}
					>
						<div class=" self-center mr-2 font-medium">Import Documents Mapping</div>

						<div class=" self-center">
							<svg
								xmlns="http://www.w3.org/2000/svg"
								viewBox="0 0 16 16"
								fill="currentColor"
								class="w-4 h-4"
							>
								<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 () => {
							let blob = new Blob([JSON.stringify($documents)], {
								type: 'application/json'
							});
							saveAs(blob, `documents-mapping-export-${Date.now()}.json`);
						}}
					>
						<div class=" self-center mr-2 font-medium">Export Documents Mapping</div>

						<div class=" self-center">
							<svg
								xmlns="http://www.w3.org/2000/svg"
								viewBox="0 0 16 16"
								fill="currentColor"
								class="w-4 h-4"
							>
								<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>
			</div>
		</div>
	</div>
</div>
