<script lang="ts">
	import { DropdownMenu } from 'bits-ui';

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

	import { jsPDF } from 'jspdf';

	import { showSettings } from '$lib/stores';
	import { flyAndScale } from '$lib/utils/transitions';

	import Dropdown from '$lib/components/common/Dropdown.svelte';
	import Tags from '$lib/components/common/Tags.svelte';

	export let shareEnabled: boolean = false;
	export let shareHandler: Function;
	export let downloadHandler: Function;

	// export let tagHandler: Function;

	export let chat;
	export let tags;
	export let deleteTag: Function;
	export let addTag: Function;

	export let onClose: Function = () => {};

	const downloadChatAsTxt = async () => {
		const _chat = chat.chat;
		console.log('download', chat);

		const chatText = _chat.messages.reduce((a, message, i, arr) => {
			return `${a}### ${message.role.toUpperCase()}\n${message.content}\n\n`;
		}, '');

		let blob = new Blob([chatText], {
			type: 'text/plain'
		});

		saveAs(blob, `chat-${_chat.title}.txt`);
	};

	const downloadChatAsPdf = async () => {
		const _chat = chat.chat;
		console.log('download', chat);

		const doc = new jsPDF();

		// Initialize y-coordinate for text placement
		let yPos = 10;
		const pageHeight = doc.internal.pageSize.height;

		// Function to check if new text exceeds the current page height
		function checkAndAddNewPage() {
			if (yPos > pageHeight - 10) {
				doc.addPage();
				yPos = 10; // Reset yPos for the new page
			}
		}

		// Function to add text with specific style
		function addStyledText(text, isTitle = false) {
			// Set font style and size based on the parameters
			doc.setFont('helvetica', isTitle ? 'bold' : 'normal');
			doc.setFontSize(isTitle ? 12 : 10);

			const textMargin = 7;

			// Split text into lines to ensure it fits within the page width
			const lines = doc.splitTextToSize(text, 180); // Adjust the width as needed

			lines.forEach((line) => {
				checkAndAddNewPage(); // Check if we need a new page before adding more text
				doc.text(line, 10, yPos);
				yPos += textMargin; // Increment yPos for the next line
			});

			// Add extra space after a block of text
			yPos += 2;
		}

		_chat.messages.forEach((message, i) => {
			// Add user text in bold
			doc.setFont('helvetica', 'normal', 'bold');

			addStyledText(message.role.toUpperCase(), { isTitle: true });
			addStyledText(message.content);
		});

		doc.save(`chat-${_chat.title}.pdf`);
	};
</script>

<Dropdown
	on:change={(e) => {
		if (e.detail === false) {
			onClose();
		}
	}}
>
	<slot />

	<div slot="content">
		<DropdownMenu.Content
			class="w-full max-w-[200px] rounded-lg px-1 py-1.5 border border-gray-300/30 dark:border-gray-700/50 z-50 bg-white dark:bg-gray-900 dark:text-white shadow-lg"
			sideOffset={8}
			side="bottom"
			align="end"
			transition={flyAndScale}
		>
			<DropdownMenu.Item
				class="flex gap-2 items-center px-3 py-2 text-sm  cursor-pointer dark:hover:bg-gray-850 rounded-md"
				on:click={async () => {
					await showSettings.set(!$showSettings);
				}}
			>
				<svg
					xmlns="http://www.w3.org/2000/svg"
					fill="none"
					viewBox="0 0 24 24"
					stroke-width="1.5"
					stroke="currentColor"
					class="size-4"
				>
					<path
						stroke-linecap="round"
						stroke-linejoin="round"
						d="M9.594 3.94c.09-.542.56-.94 1.11-.94h2.593c.55 0 1.02.398 1.11.94l.213 1.281c.063.374.313.686.645.87.074.04.147.083.22.127.325.196.72.257 1.075.124l1.217-.456a1.125 1.125 0 0 1 1.37.49l1.296 2.247a1.125 1.125 0 0 1-.26 1.431l-1.003.827c-.293.241-.438.613-.43.992a7.723 7.723 0 0 1 0 .255c-.008.378.137.75.43.991l1.004.827c.424.35.534.955.26 1.43l-1.298 2.247a1.125 1.125 0 0 1-1.369.491l-1.217-.456c-.355-.133-.75-.072-1.076.124a6.47 6.47 0 0 1-.22.128c-.331.183-.581.495-.644.869l-.213 1.281c-.09.543-.56.94-1.11.94h-2.594c-.55 0-1.019-.398-1.11-.94l-.213-1.281c-.062-.374-.312-.686-.644-.87a6.52 6.52 0 0 1-.22-.127c-.325-.196-.72-.257-1.076-.124l-1.217.456a1.125 1.125 0 0 1-1.369-.49l-1.297-2.247a1.125 1.125 0 0 1 .26-1.431l1.004-.827c.292-.24.437-.613.43-.991a6.932 6.932 0 0 1 0-.255c.007-.38-.138-.751-.43-.992l-1.004-.827a1.125 1.125 0 0 1-.26-1.43l1.297-2.247a1.125 1.125 0 0 1 1.37-.491l1.216.456c.356.133.751.072 1.076-.124.072-.044.146-.086.22-.128.332-.183.582-.495.644-.869l.214-1.28Z"
					/>
					<path
						stroke-linecap="round"
						stroke-linejoin="round"
						d="M15 12a3 3 0 1 1-6 0 3 3 0 0 1 6 0Z"
					/>
				</svg>
				<div class="flex items-center">Settings</div>
			</DropdownMenu.Item>

			{#if shareEnabled}
				<DropdownMenu.Item
					class="flex gap-2 items-center px-3 py-2 text-sm  cursor-pointer dark:hover:bg-gray-850 rounded-md"
					on:click={() => {
						shareHandler();
					}}
				>
					<svg
						xmlns="http://www.w3.org/2000/svg"
						viewBox="0 0 24 24"
						fill="currentColor"
						class="size-4"
					>
						<path
							fill-rule="evenodd"
							d="M15.75 4.5a3 3 0 1 1 .825 2.066l-8.421 4.679a3.002 3.002 0 0 1 0 1.51l8.421 4.679a3 3 0 1 1-.729 1.31l-8.421-4.678a3 3 0 1 1 0-4.132l8.421-4.679a3 3 0 0 1-.096-.755Z"
							clip-rule="evenodd"
						/>
					</svg>
					<div class="flex items-center">Share</div>
				</DropdownMenu.Item>

				<!-- <DropdownMenu.Item
					class="flex gap-2 items-center px-3 py-2 text-sm  font-medium cursor-pointer"
					on:click={() => {
						downloadHandler();
					}}
				/> -->
				<DropdownMenu.Sub>
					<DropdownMenu.SubTrigger
						class="flex gap-2 items-center px-3 py-2 text-sm  cursor-pointer dark:hover:bg-gray-850 rounded-md"
					>
						<svg
							xmlns="http://www.w3.org/2000/svg"
							fill="none"
							viewBox="0 0 24 24"
							stroke-width="1.5"
							stroke="currentColor"
							class="size-4"
						>
							<path
								stroke-linecap="round"
								stroke-linejoin="round"
								d="M3 16.5v2.25A2.25 2.25 0 0 0 5.25 21h13.5A2.25 2.25 0 0 0 21 18.75V16.5M16.5 12 12 16.5m0 0L7.5 12m4.5 4.5V3"
							/>
						</svg>

						<div class="flex items-center">Download</div>
					</DropdownMenu.SubTrigger>
					<DropdownMenu.SubContent
						class="w-full rounded-lg px-1 py-1.5 border border-gray-300/30 dark:border-gray-700/50 z-50 bg-white dark:bg-gray-900 dark:text-white shadow-lg"
						transition={flyAndScale}
						sideOffset={8}
					>
						<DropdownMenu.Item
							class="flex gap-2 items-center px-3 py-2 text-sm  cursor-pointer dark:hover:bg-gray-850 rounded-md"
							on:click={() => {
								downloadChatAsTxt();
							}}
						>
							<div class="flex items-center line-clamp-1">Plain text (.txt)</div>
						</DropdownMenu.Item>

						<DropdownMenu.Item
							class="flex gap-2 items-center px-3 py-2 text-sm  cursor-pointer dark:hover:bg-gray-850 rounded-md"
							on:click={() => {
								downloadChatAsPdf();
							}}
						>
							<div class="flex items-center line-clamp-1">PDF document (.pdf)</div>
						</DropdownMenu.Item>
					</DropdownMenu.SubContent>
				</DropdownMenu.Sub>

				<hr class="border-gray-100 dark:border-gray-800 mt-2.5 mb-1.5" />

				<div class="flex p-1">
					<Tags {tags} {deleteTag} {addTag} />
				</div>

				<!-- <DropdownMenu.Item
					class="flex  gap-2  items-center px-3 py-2 text-sm  font-medium cursor-pointer"
					on:click={() => {
						tagHandler();
					}}
				>
					<svg
						xmlns="http://www.w3.org/2000/svg"
						fill="none"
						viewBox="0 0 24 24"
						stroke-width="2"
						stroke="currentColor"
						class="size-4"
					>
						<path
							stroke-linecap="round"
							stroke-linejoin="round"
							d="M9.568 3H5.25A2.25 2.25 0 0 0 3 5.25v4.318c0 .597.237 1.17.659 1.591l9.581 9.581c.699.699 1.78.872 2.607.33a18.095 18.095 0 0 0 5.223-5.223c.542-.827.369-1.908-.33-2.607L11.16 3.66A2.25 2.25 0 0 0 9.568 3Z"
						/>
						<path stroke-linecap="round" stroke-linejoin="round" d="M6 6h.008v.008H6V6Z" />
					</svg>

					<div class="flex items-center">Tag</div>
				</DropdownMenu.Item> -->
			{/if}
		</DropdownMenu.Content>
	</div>
</Dropdown>
