import {
	DOMAINS,
	ELEMENT_IDS,
	MESSAGE_TYPES,
	STORAGE_KEYS,
} from "../utils/constants";
import {
	createChatGPTInputBarElement,
	createClaudeInputBarElement,
	createSaveTweetElement,
	createT3InputBarElement,
	createTwitterImportButton,
	createTwitterImportUI,
	DOMUtils,
} from "../utils/ui-components";

export default defineContentScript({
	matches: ["<all_urls>"],
	main() {
		let twitterImportUI: HTMLElement | null = null;
		let isTwitterImportOpen = false;

		browser.runtime.onMessage.addListener(async (message) => {
			if (message.action === MESSAGE_TYPES.SHOW_TOAST) {
				DOMUtils.showToast(message.state);
			} else if (message.action === MESSAGE_TYPES.SAVE_MEMORY) {
				await saveMemory();
			} else if (message.type === MESSAGE_TYPES.IMPORT_UPDATE) {
				updateTwitterImportUI(message);
			} else if (message.type === MESSAGE_TYPES.IMPORT_DONE) {
				updateTwitterImportUI(message);
			}
		});

		const observeForMemoriesDialog = () => {
			const observer = new MutationObserver(() => {
				if (DOMUtils.isOnDomain(DOMAINS.CHATGPT)) {
					addSupermemoryButtonToMemoriesDialog();
					addSaveChatGPTElementBeforeComposerBtn();
				}
				if (DOMUtils.isOnDomain(DOMAINS.CLAUDE)) {
					addSupermemoryIconToClaudeInput();
				}
				if (DOMUtils.isOnDomain(DOMAINS.T3)) {
					addSupermemoryIconToT3Input();
				}
				if (DOMUtils.isOnDomain(DOMAINS.TWITTER)) {
					addTwitterImportButton();
					//addSaveTweetElement();
				}
			});

			observer.observe(document.body, {
				childList: true,
				subtree: true,
			});
		};

		if (DOMUtils.isOnDomain(DOMAINS.TWITTER)) {
			setTimeout(() => {
				addTwitterImportButton(); // Wait 2 seconds for page to load
				//addSaveTweetElement();
			}, 2000);
		}

		if (DOMUtils.isOnDomain(DOMAINS.CLAUDE)) {
			setTimeout(() => {
				addSupermemoryIconToClaudeInput(); // Wait 2 seconds for Claude page to load
			}, 2000);
		}

		if (DOMUtils.isOnDomain(DOMAINS.T3)) {
			setTimeout(() => {
				addSupermemoryIconToT3Input(); // Wait 2 seconds for T3 page to load
			}, 2000);
		}

		if (document.readyState === "loading") {
			document.addEventListener("DOMContentLoaded", observeForMemoriesDialog);
		} else {
			observeForMemoriesDialog();
		}

		async function saveMemory() {
			try {
				DOMUtils.showToast("loading");

				const highlightedText = window.getSelection()?.toString() || "";

				const url = window.location.href;

				const html = document.documentElement.outerHTML;

				const response = await browser.runtime.sendMessage({
					action: MESSAGE_TYPES.SAVE_MEMORY,
					data: {
						html,
						highlightedText,
						url,
					},
				});

				console.log("Response from enxtension:", response);
				if (response.success) {
					DOMUtils.showToast("success");
				} else {
					DOMUtils.showToast("error");
				}
			} catch (error) {
				console.error("Error saving memory:", error);
				DOMUtils.showToast("error");
			}
		}

		async function getRelatedMemories() {
			try {
				const userQuery =
					document.getElementById("prompt-textarea")?.textContent || "";

				const response = await browser.runtime.sendMessage({
					action: MESSAGE_TYPES.GET_RELATED_MEMORIES,
					data: userQuery,
				});

				if (response.success && response.data) {
					const promptElement = document.getElementById("prompt-textarea");
					if (promptElement) {
						const currentContent = promptElement.innerHTML;
						promptElement.innerHTML = `${currentContent}<br>Supermemories: ${response.data}`;
					}
				}
			} catch (error) {
				console.error("Error getting related memories:", error);
			}
		}

		function addSupermemoryButtonToMemoriesDialog() {
			const dialogs = document.querySelectorAll('[role="dialog"]');
			let memoriesDialog: HTMLElement | null = null;

			for (const dialog of dialogs) {
				const headerText = dialog.querySelector("h2");
				if (headerText?.textContent?.includes("Saved memories")) {
					memoriesDialog = dialog as HTMLElement;
					break;
				}
			}

			if (!memoriesDialog) return;

			if (memoriesDialog.querySelector("#supermemory-save-button")) return;

			const deleteAllContainer = memoriesDialog.querySelector(
				".mt-5.flex.justify-end",
			);
			if (!deleteAllContainer) return;

			const supermemoryButton = document.createElement("button");
			supermemoryButton.id = "supermemory-save-button";
			supermemoryButton.className = "btn relative btn-primary-outline mr-2";

			const iconUrl = browser.runtime.getURL("/icon-16.png");

			supermemoryButton.innerHTML = `
        <div class="flex items-center justify-center gap-2">
          <img src="${iconUrl}" alt="supermemory" style="width: 16px; height: 16px; flex-shrink: 0; border-radius: 2px;" />
          Save to supermemory
        </div>
      `;

			supermemoryButton.style.cssText = `
        background: #1C2026 !important;
        color: white !important;
        border: 1px solid #1C2026 !important;
        border-radius: 9999px !important;
        padding: 10px 16px !important;
        font-weight: 500 !important;
        font-size: 14px !important;
        margin-right: 8px !important;
        cursor: pointer !important;
      `;

			supermemoryButton.addEventListener("mouseenter", () => {
				supermemoryButton.style.backgroundColor = "#2B2E33";
			});

			supermemoryButton.addEventListener("mouseleave", () => {
				supermemoryButton.style.backgroundColor = "#1C2026";
			});

			supermemoryButton.addEventListener("click", async () => {
				await saveMemoriesToSupermemory();
			});

			deleteAllContainer.insertBefore(
				supermemoryButton,
				deleteAllContainer.firstChild,
			);
		}

		async function saveMemoriesToSupermemory() {
			try {
				DOMUtils.showToast("loading");

				const memoriesTable = document.querySelector(
					'[role="dialog"] table tbody',
				);
				if (!memoriesTable) {
					DOMUtils.showToast("error");
					return;
				}

				const memoryRows = memoriesTable.querySelectorAll("tr");
				const memories: string[] = [];

				memoryRows.forEach((row) => {
					const memoryCell = row.querySelector("td .py-2.whitespace-pre-wrap");
					if (memoryCell?.textContent) {
						memories.push(memoryCell.textContent.trim());
					}
				});

				console.log("Memories:", memories);

				if (memories.length === 0) {
					DOMUtils.showToast("error");
					return;
				}

				const combinedContent = `ChatGPT Saved Memories:\n\n${memories.map((memory, index) => `${index + 1}. ${memory}`).join("\n\n")}`;

				const response = await browser.runtime.sendMessage({
					action: MESSAGE_TYPES.SAVE_MEMORY,
					data: {
						html: combinedContent,
					},
				});

				console.log({ response });

				if (response.success) {
					DOMUtils.showToast("success");
				} else {
					DOMUtils.showToast("error");
				}
			} catch (error) {
				console.error("Error saving memories to supermemory:", error);
				DOMUtils.showToast("error");
			}
		}

		function addTwitterImportButton() {
			if (!DOMUtils.isOnDomain(DOMAINS.TWITTER)) {
				return;
			}

			// Only show the import button on the bookmarks page
			if (window.location.pathname !== "/i/bookmarks") {
				return;
			}

			if (DOMUtils.elementExists(ELEMENT_IDS.TWITTER_IMPORT_BUTTON)) {
				return;
			}

			const button = createTwitterImportButton(() => {
				showTwitterImportUI();
			});

			document.body.appendChild(button);
		}

		function showTwitterImportUI() {
			if (twitterImportUI) {
				twitterImportUI.remove();
			}

			isTwitterImportOpen = true;

			// Check if user is authenticated
			browser.storage.local.get([STORAGE_KEYS.BEARER_TOKEN], (result) => {
				const isAuthenticated = !!result[STORAGE_KEYS.BEARER_TOKEN];

				twitterImportUI = createTwitterImportUI(
					hideTwitterImportUI,
					async () => {
						try {
							await browser.runtime.sendMessage({
								type: MESSAGE_TYPES.BATCH_IMPORT_ALL,
							});
						} catch (error) {
							console.error("Error starting import:", error);
						}
					},
					isAuthenticated,
				);

				document.body.appendChild(twitterImportUI);
			});
		}

		function hideTwitterImportUI() {
			if (twitterImportUI) {
				twitterImportUI.remove();
				twitterImportUI = null;
			}
			isTwitterImportOpen = false;
		}

		function updateTwitterImportUI(message: {
			type: string;
			importedMessage?: string;
			totalImported?: number;
		}) {
			if (!isTwitterImportOpen || !twitterImportUI) return;

			const statusDiv = twitterImportUI.querySelector(
				`#${ELEMENT_IDS.TWITTER_IMPORT_STATUS}`,
			);
			const button = twitterImportUI.querySelector(
				`#${ELEMENT_IDS.TWITTER_IMPORT_BTN}`,
			);

			if (message.type === MESSAGE_TYPES.IMPORT_UPDATE) {
				if (statusDiv) {
					statusDiv.innerHTML = `
            <div style="display: flex; align-items: center; gap: 8px; color: #92400e; background: #fef3c7; border: 1px solid #f59e0b; border-radius: 8px; padding: 8px 12px; font-size: 13px;">
              <div style="width: 12px; height: 12px; border: 2px solid #f59e0b; border-top: 2px solid transparent; border-radius: 50%; animation: spin 1s linear infinite;"></div>
              <span>${message.importedMessage}</span>
            </div>
          `;
				}
				if (button) {
					(button as HTMLButtonElement).disabled = true;
					(button as HTMLButtonElement).textContent = "Importing...";
				}
			}

			if (message.type === MESSAGE_TYPES.IMPORT_DONE) {
				if (statusDiv) {
					statusDiv.innerHTML = `
            <div style="display: flex; align-items: center; gap: 8px; color: #0369a1; background: #f0f9ff; border: 1px solid #0ea5e9; border-radius: 8px; padding: 8px 12px; font-size: 13px;">
              <span style="color: #059669;">✓</span>
              <span>Successfully imported ${message.totalImported} tweets!</span>
            </div>
          `;
				}

				setTimeout(() => {
					hideTwitterImportUI();
				}, 3000);
			}
		}

		function addSaveChatGPTElementBeforeComposerBtn() {
			if (!DOMUtils.isOnDomain(DOMAINS.CHATGPT)) {
				return;
			}

			const composerButtons = document.querySelectorAll("button.composer-btn");

			composerButtons.forEach((button) => {
				if (button.hasAttribute("data-supermemory-icon-added-before")) {
					return;
				}

				const parent = button.parentElement;
				if (!parent) return;

				const parentSiblings = parent.parentElement?.children;
				if (!parentSiblings) return;

				let hasSpeechButtonSibling = false;
				for (const sibling of parentSiblings) {
					if (
						sibling.getAttribute("data-testid") ===
						"composer-speech-button-container"
					) {
						hasSpeechButtonSibling = true;
						break;
					}
				}

				if (!hasSpeechButtonSibling) return;

				const grandParent = parent.parentElement;
				if (!grandParent) return;

				const existingIcon = grandParent.querySelector(
					`#${ELEMENT_IDS.CHATGPT_INPUT_BAR_ELEMENT}-before-composer`,
				);
				if (existingIcon) {
					button.setAttribute("data-supermemory-icon-added-before", "true");
					return;
				}

				const saveChatGPTElement = createChatGPTInputBarElement(async () => {
					await getRelatedMemories();
				});

				saveChatGPTElement.id = `${ELEMENT_IDS.CHATGPT_INPUT_BAR_ELEMENT}-before-composer-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`;

				button.setAttribute("data-supermemory-icon-added-before", "true");

				grandParent.insertBefore(saveChatGPTElement, parent);
			});
		}

		function addSupermemoryIconToClaudeInput() {
			if (!DOMUtils.isOnDomain(DOMAINS.CLAUDE)) {
				return;
			}

			const targetContainers = document.querySelectorAll(
				".relative.flex-1.flex.items-center.gap-2.shrink.min-w-0",
			);

			targetContainers.forEach((container) => {
				if (container.hasAttribute("data-supermemory-icon-added")) {
					return;
				}

				const existingIcon = container.querySelector(
					`#${ELEMENT_IDS.CLAUDE_INPUT_BAR_ELEMENT}`,
				);
				if (existingIcon) {
					container.setAttribute("data-supermemory-icon-added", "true");
					return;
				}

				const supermemoryIcon = createClaudeInputBarElement(async () => {
					await getRelatedMemoriesForClaude();
				});

				supermemoryIcon.id = `${ELEMENT_IDS.CLAUDE_INPUT_BAR_ELEMENT}-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`;

				container.setAttribute("data-supermemory-icon-added", "true");

				container.insertBefore(supermemoryIcon, container.firstChild);
			});
		}

		async function getRelatedMemoriesForClaude() {
			try {
				let userQuery = "";

				const supermemoryContainer = document.querySelector(
					'[data-supermemory-icon-added="true"]',
				);
				if (supermemoryContainer?.parentElement?.previousElementSibling) {
					const pTag =
						supermemoryContainer.parentElement.previousElementSibling.querySelector(
							"p",
						);
					userQuery = pTag?.innerText || pTag?.textContent || "";
				}

				if (!userQuery.trim()) {
					const textareaElement = document.querySelector(
						'div[contenteditable="true"]',
					) as HTMLElement;
					userQuery =
						textareaElement?.innerText || textareaElement?.textContent || "";
				}

				if (!userQuery.trim()) {
					const inputElements = document.querySelectorAll(
						'div[contenteditable="true"], textarea, input[type="text"]',
					);
					for (const element of inputElements) {
						const text =
							(element as HTMLElement).innerText ||
							(element as HTMLInputElement).value;
						if (text?.trim()) {
							userQuery = text.trim();
							break;
						}
					}
				}

				console.log("Claude query extracted:", userQuery);

				if (!userQuery.trim()) {
					console.log("No query text found");
					DOMUtils.showToast("error");
					return;
				}

				const response = await browser.runtime.sendMessage({
					action: MESSAGE_TYPES.GET_RELATED_MEMORIES,
					data: userQuery,
				});

				console.log("Claude memories response:", response);

				if (response.success && response.data) {
					const textareaElement = document.querySelector(
						'div[contenteditable="true"]',
					) as HTMLElement;

					if (textareaElement) {
						const currentContent = textareaElement.innerHTML;
						textareaElement.innerHTML = `${currentContent}<br>Supermemories: ${response.data}`;

						textareaElement.dispatchEvent(
							new Event("input", { bubbles: true }),
						);
					} else {
						console.log("Could not find Claude input area");
					}
				} else {
					console.log(
						"Failed to get memories:",
						response.error || "Unknown error",
					);
				}
			} catch (error) {
				console.error("Error getting related memories for Claude:", error);
			}
		}

		function addSupermemoryIconToT3Input() {
			if (!DOMUtils.isOnDomain(DOMAINS.T3)) {
				return;
			}

			const targetContainers = document.querySelectorAll(
				".flex.min-w-0.items-center.gap-2.overflow-hidden",
			);

			targetContainers.forEach((container) => {
				if (container.hasAttribute("data-supermemory-icon-added")) {
					return;
				}

				const existingIcon = container.querySelector(
					`#${ELEMENT_IDS.T3_INPUT_BAR_ELEMENT}`,
				);
				if (existingIcon) {
					container.setAttribute("data-supermemory-icon-added", "true");
					return;
				}

				const supermemoryIcon = createT3InputBarElement(async () => {
					await getRelatedMemoriesForT3();
				});

				supermemoryIcon.id = `${ELEMENT_IDS.T3_INPUT_BAR_ELEMENT}-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`;

				container.setAttribute("data-supermemory-icon-added", "true");

				container.insertBefore(supermemoryIcon, container.firstChild);
			});
		}

		async function getRelatedMemoriesForT3() {
			try {
				let userQuery = "";

				const supermemoryContainer = document.querySelector(
					'[data-supermemory-icon-added="true"]',
				);
				if (
					supermemoryContainer?.parentElement?.parentElement
						?.previousElementSibling
				) {
					const textareaElement =
						supermemoryContainer.parentElement.parentElement.previousElementSibling.querySelector(
							"textarea",
						);
					userQuery = textareaElement?.value || "";
				}

				if (!userQuery.trim()) {
					const textareaElement = document.querySelector(
						'div[contenteditable="true"]',
					) as HTMLElement;
					userQuery =
						textareaElement?.innerText || textareaElement?.textContent || "";
				}

				if (!userQuery.trim()) {
					const textareas = document.querySelectorAll("textarea");
					for (const textarea of textareas) {
						const text = (textarea as HTMLTextAreaElement).value;
						if (text?.trim()) {
							userQuery = text.trim();
							break;
						}
					}
				}

				console.log("T3 query extracted:", userQuery);

				if (!userQuery.trim()) {
					console.log("No query text found");
					return;
				}

				const response = await browser.runtime.sendMessage({
					action: MESSAGE_TYPES.GET_RELATED_MEMORIES,
					data: userQuery,
				});

				console.log("T3 memories response:", response);

				if (response.success && response.data) {
					let textareaElement = null;
					const supermemoryContainer = document.querySelector(
						'[data-supermemory-icon-added="true"]',
					);
					if (
						supermemoryContainer?.parentElement?.parentElement
							?.previousElementSibling
					) {
						textareaElement =
							supermemoryContainer.parentElement.parentElement.previousElementSibling.querySelector(
								"textarea",
							);
					}

					if (!textareaElement) {
						textareaElement = document.querySelector(
							'div[contenteditable="true"]',
						) as HTMLElement;
					}

					if (textareaElement) {
						if (textareaElement.tagName === "TEXTAREA") {
							const currentContent = (textareaElement as HTMLTextAreaElement)
								.value;
							(textareaElement as HTMLTextAreaElement).value =
								`${currentContent}\n\nSupermemories: ${response.data}`;
						} else {
							const currentContent = textareaElement.innerHTML;
							textareaElement.innerHTML = `${currentContent}<br>Supermemories: ${response.data}`;
						}

						textareaElement.dispatchEvent(
							new Event("input", { bubbles: true }),
						);
					} else {
						console.log("Could not find T3 input area");
					}
				} else {
					console.log(
						"Failed to get memories:",
						response.error || "Unknown error",
					);
				}
			} catch (error) {
				console.error("Error getting related memories for T3:", error);
			}
		}

		// TODO: Add Tweet Capture Functionality
		function _addSaveTweetElement() {
			if (!DOMUtils.isOnDomain(DOMAINS.TWITTER)) {
				return;
			}

			const targetDivs = document.querySelectorAll(
				"div.css-175oi2r.r-18u37iz.r-1h0z5md.r-1wron08",
			);

			targetDivs.forEach((targetDiv) => {
				if (targetDiv.hasAttribute("data-supermemory-icon-added")) {
					return;
				}

				const previousElement = targetDiv.previousElementSibling;
				if (previousElement?.id?.startsWith(ELEMENT_IDS.SAVE_TWEET_ELEMENT)) {
					targetDiv.setAttribute("data-supermemory-icon-added", "true");
					return;
				}

				const saveTweetElement = createSaveTweetElement(async () => {
					await saveMemory();
				});

				saveTweetElement.id = `${ELEMENT_IDS.SAVE_TWEET_ELEMENT}-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`;

				targetDiv.setAttribute("data-supermemory-icon-added", "true");

				targetDiv.parentNode?.insertBefore(saveTweetElement, targetDiv);
			});
		}

		document.addEventListener("keydown", async (event) => {
			if (
				(event.ctrlKey || event.metaKey) &&
				event.shiftKey &&
				event.key === "m"
			) {
				event.preventDefault();
				await saveMemory();
			}
		});

		window.addEventListener("message", (event) => {
			if (event.source !== window) {
				return;
			}
			const bearerToken = event.data.token;

			if (bearerToken) {
				if (
					!(
						window.location.hostname === "localhost" ||
						window.location.hostname === "supermemory.ai" ||
						window.location.hostname === "app.supermemory.ai"
					)
				) {
					console.log(
						"Bearer token is only allowed to be used on localhost or supermemory.ai",
					);
					return;
				}

				chrome.storage.local.set(
					{
						[STORAGE_KEYS.BEARER_TOKEN]: bearerToken,
					},
					() => {},
				);
			}
		});
	},
});