interface HubSpotFormField {
	objectTypeId: string;
	name: string;
	value: string;
}

interface HubSpotFormData {
	fields: HubSpotFormField[];
	context: {
		pageUri: string;
		pageName: string;
		hutk?: string; // HubSpot UTK from cookies
	};
}

interface SignUpFormData {
	firstName?: string;
	lastName?: string;
	email?: string;
}

/**
 * Extract HubSpot UTK (User Token) from cookies
 * This is used for tracking and attribution in HubSpot
 */
export function getHubSpotUTK(cookieHeader?: string): string | null {
	if (!cookieHeader) return null;

	const name = "hubspotutk=";
	const decodedCookie = decodeURIComponent(cookieHeader);
	const cookieArray = decodedCookie.split(";");

	for (let i = 0; i < cookieArray.length; i++) {
		const cookie = cookieArray[i]?.trim();
		if (!cookie) continue;
		if (cookie.indexOf(name) === 0) {
			return cookie.substring(name.length, cookie.length);
		}
	}
	return null;
}

/**
 * Convert contact form data to HubSpot form format
 */
export function formatContactDataForHubSpot(
	contactData: SignUpFormData,
	hutk?: string | null,
): HubSpotFormData {
	const formData: HubSpotFormData = {
		fields: [
			{
				objectTypeId: "0-1", // Contact object type
				name: "firstname",
				value: contactData.firstName || "",
			},
			{
				objectTypeId: "0-1",
				name: "lastname",
				value: contactData.lastName || "",
			},
			{
				objectTypeId: "0-1",
				name: "email",
				value: contactData.email || "",
			},
		],
		context: {
			pageUri: "https://app.dokploy.com/register",
			pageName: "Sign Up",
		},
	};

	// Add HubSpot UTK if available
	if (hutk) {
		formData.context.hutk = hutk;
	}

	return formData;
}

/**
 * Submit form data to HubSpot Forms API
 */
export async function submitToHubSpot(
	contactData: SignUpFormData,
	hutk?: string | null,
): Promise<boolean> {
	try {
		const portalId = process.env.HUBSPOT_PORTAL_ID;
		const formGuid = process.env.HUBSPOT_FORM_GUID;

		if (!portalId || !formGuid) {
			console.error(
				"HubSpot configuration missing: HUBSPOT_PORTAL_ID or HUBSPOT_FORM_GUID not set",
			);
			return false;
		}

		const formData = formatContactDataForHubSpot(contactData, hutk);
		const response = await fetch(
			`https://api.hsforms.com/submissions/v3/integration/submit/${portalId}/${formGuid}`,
			{
				method: "POST",
				headers: {
					"Content-Type": "application/json",
				},
				body: JSON.stringify(formData),
			},
		);

		if (!response.ok) {
			const errorText = await response.text();
			console.error("HubSpot API error:", response.status, errorText);
			return false;
		}

		const result = await response.json();
		console.log("HubSpot submission successful:", result);
		return true;
	} catch (error) {
		console.error("Error submitting to HubSpot:", error);
		return false;
	}
}