import prisma from "../prisma/client.js";
import { sendEmail } from "../utils/sendEmail.js";
import { getEmailsByType } from "../utils/getEmailByTypes.js";

export const getAllCategories = async (req, res) => {
	try {
		const { admin } = req.query;

		const categories = await prisma.healthCheckCategory.findMany({
			where: admin === "true" ? {} : { isActive: true },
			orderBy: { sortOrder: "asc" },
			include: {
				_count: { select: { packages: true } },
			},
		});
		return res.status(200).json({ success: true, data: categories });
	} catch (error) {
		return res
			.status(500)
			.json({ success: false, message: "Failed to fetch categories" });
	}
};

export const createCategory = async (req, res) => {
	try {
		const { name, slug, description, isActive, sortOrder } = req.body;

		const category = await prisma.healthCheckCategory.create({
			data: {
				name,
				slug: slug || null,
				description,
				isActive: isActive ?? true,
				sortOrder: sortOrder ? Number(sortOrder) : 1000,
			},
		});

		return res
			.status(201)
			.json({ success: true, message: "Category created", data: category });
	} catch (error) {
		console.error(error);
		return res
			.status(500)
			.json({ success: false, message: "Failed to create category" });
	}
};

export const updateCategory = async (req, res) => {
	try {
		const { id } = req.params;
		const data = { ...req.body };

		delete data.id;
		delete data._count;
		delete data.createdAt;
		delete data.updatedAt;

		if (data.sortOrder !== undefined) data.sortOrder = Number(data.sortOrder);

		if (data.slug === "") data.slug = null;

		const updatedCategory = await prisma.$transaction(async (tx) => {
			const category = await tx.healthCheckCategory.update({
				where: { id: Number(id) },
				data,
			});

			if (data.isActive === false) {
				await tx.healthPackage.updateMany({
					where: { categoryId: Number(id) },
					data: { isActive: false },
				});
			}

			return category;
		});

		return res.status(200).json({
			success: true,
			message: "Category updated",
			data: updatedCategory,
		});
	} catch (error) {
		console.error(error);
		return res
			.status(500)
			.json({ success: false, message: "Failed to update category" });
	}
};

export const deleteCategory = async (req, res) => {
	try {
		const { id } = req.params;

		await prisma.healthCheckCategory.delete({
			where: { id: Number(id) },
		});

		return res
			.status(200)
			.json({ success: true, message: "Category deleted successfully" });
	} catch (error) {
		console.error(error);
		return res.status(500).json({
			success: false,
			message:
				"Failed to delete category. Ensure no packages are linked to it.",
		});
	}
};

export const getAllPackages = async (req, res) => {
	try {
		const { admin, categorySlug } = req.query;

		const packages = await prisma.healthPackage.findMany({
			where: {
				AND: [
					admin === "true" ? {} : { isActive: true },
					categorySlug ? { category: { slug: categorySlug } } : {},
				],
			},
			include: { category: true },
			orderBy: [{ sortOrder: "asc" }, { createdAt: "desc" }],
		});

		return res.status(200).json({ success: true, data: packages });
	} catch (error) {
		console.error(error);
		return res
			.status(500)
			.json({ success: false, message: "Failed to fetch packages" });
	}
};

export const createPackage = async (req, res) => {
	try {
		const {
			name,
			slug,
			description,
			price,
			discountedPrice,
			inclusions,
			categoryId,
			isActive,
			isFeatured,
			sortOrder,
		} = req.body;

		const healthPackage = await prisma.healthPackage.create({
			data: {
				name,
				slug,
				description,
				price,
				discountedPrice,
				inclusions,
				categoryId: Number(categoryId),
				isActive: isActive ?? true,
				isFeatured: isFeatured ?? false,
				sortOrder: sortOrder ? Number(sortOrder) : 1000,
			},
		});

		return res
			.status(201)
			.json({ success: true, message: "Package created", data: healthPackage });
	} catch (error) {
		console.error(error);
		return res
			.status(500)
			.json({ success: false, message: "Failed to create package" });
	}
};

export const updatePackage = async (req, res) => {
	try {
		const { id } = req.params;
		const data = { ...req.body };
		delete data.id;
		delete data.category;

		if (data.categoryId) data.categoryId = Number(data.categoryId);
		if (data.sortOrder) data.sortOrder = Number(data.sortOrder);

		const updated = await prisma.healthPackage.update({
			where: { id: Number(id) },
			data,
		});

		return res
			.status(200)
			.json({ success: true, message: "Package updated", data: updated });
	} catch (error) {
		console.error(error);
		return res.status(500).json({ success: false, message: "Update failed" });
	}
};

export const deletePackage = async (req, res) => {
	try {
		const { id } = req.params;
		await prisma.healthPackage.delete({ where: { id: Number(id) } });
		return res.status(200).json({ success: true, message: "Package deleted" });
	} catch (error) {
		console.error(error);
		return res.status(500).json({ success: false, message: "Delete failed" });
	}
};

export const createPackageInquiry = async (req, res) => {
	try {
		const {
			fullName,
			mobileNumber,
			email,
			age,
			gender,
			preferredDate,
			packageId,
			message,
		} = req.body;

		const inquiry = await prisma.healthPackageInquiry.create({
			data: {
				fullName,
				mobileNumber,
				email,
				age: age ? Number(age) : null,
				gender,
				preferredDate: preferredDate ? new Date(preferredDate) : null,
				message,
				packageId: Number(packageId),
			},
			include: {
				healthPackage: true,
			},
		});

		try {
			const emailList = await getEmailsByType("HCINQUIRY");

			if (emailList) {
				await sendEmail({
					to: emailList,
					subject: "New Health Checkup Package Inquiry",
					html: `
        <div style="font-family: Arial, sans-serif; background-color: #f4f6f8; padding: 20px;">
          
          <div style="max-width: 600px; margin: auto; background: #ffffff; border-radius: 10px; overflow: hidden; box-shadow: 0 4px 10px rgba(0,0,0,0.05);">
            
            <!-- Header -->
            <div style="background-color: #0d6efd; color: #ffffff; padding: 20px;">
              <h2 style="margin: 0;">GG Hospital</h2>
              <p style="margin: 5px 0 0; font-size: 14px;">
                New Health Checkup Package Inquiry
              </p>
            </div>

            <!-- Body -->
            <div style="padding: 20px; color: #333;">
              
              <h3 style="margin-top: 0;">Inquirer Details</h3>
              
              <table style="width: 100%; border-collapse: collapse;">
                <tr>
                  <td style="padding: 8px 0; width: 35%;"><b>Name:</b></td>
                  <td style="padding: 8px 0;">${fullName}</td>
                </tr>
                <tr>
                  <td style="padding: 8px 0;"><b>Phone:</b></td>
                  <td style="padding: 8px 0;">${mobileNumber}</td>
                </tr>
                <tr>
                  <td style="padding: 8px 0;"><b>Email:</b></td>
                  <td style="padding: 8px 0;">${email || "-"}</td>
                </tr>
                <tr>
                  <td style="padding: 8px 0;"><b>Age:</b></td>
                  <td style="padding: 8px 0;">${age || "-"}</td>
                </tr>
                <tr>
                  <td style="padding: 8px 0;"><b>Gender:</b></td>
                  <td style="padding: 8px 0;">${gender || "-"}</td>
                </tr>
              </table>

              <h3 style="margin-top: 20px;">Package Details</h3>

              <table style="width: 100%; border-collapse: collapse;">
                <tr>
                  <td style="padding: 8px 0; width: 35%;"><b>Package Name:</b></td>
                  <td style="padding: 8px 0;">${inquiry.healthPackage?.name || "Unknown Package"}</td>
                </tr>
                <tr>
                  <td style="padding: 8px 0;"><b>Preferred Date:</b></td>
                  <td style="padding: 8px 0;">
                    ${
											preferredDate
												? new Date(preferredDate).toLocaleDateString("en-GB", {
														day: "2-digit",
														month: "long",
														year: "numeric",
													})
												: "Not specified"
										}
                  </td>
                </tr>
              </table>

              <!-- Message Box -->
              <div style="margin-top: 20px;">
                <h3>Message</h3>
               <div style="
                    background: #f8f9fa;
                    padding: 15px;
                    border-radius: 6px;
                    line-height: 1.6;
                    white-space: pre-wrap;
                    word-break: break-word;
                    overflow-wrap: anywhere;
                ">
                    ${message ? message.replace(/\n/g, "<br/>") : "-"}
                </div>
              </div>

            </div>

            <!-- Footer -->
            <div style="background: #f1f1f1; padding: 15px; text-align: center; font-size: 12px; color: #666;">
              This inquiry was submitted via the GG Hospital website.
            </div>

          </div>

        </div>
        `,
				});
			}
		} catch (err) {
			console.error("Email failed:", err);
		}

		return res.status(201).json({
			success: true,
			message: "Booking inquiry sent successfully",
			data: inquiry,
		});
	} catch (error) {
		console.error(error);
		return res
			.status(500)
			.json({ success: false, message: "Failed to submit inquiry" });
	}
};

export const getPackageBySlug = async (req, res) => {
	try {
		const { slug } = req.params;
		const healthPackage = await prisma.healthPackage.findFirst({
			where: { slug, isActive: true },
			include: { category: true },
		});

		if (!healthPackage) {
			return res
				.status(404)
				.json({ success: false, message: "Package not found" });
		}

		return res.status(200).json({ success: true, data: healthPackage });
	} catch (error) {
		console.error(error);
		return res
			.status(500)
			.json({ success: false, message: "Failed to fetch package" });
	}
};

export const getAllInquiries = async (req, res) => {
	try {
		const { page = 1, limit = 10, filterDate, startDate, endDate } = req.query;

		const queryPage = parseInt(page);
		const queryLimit = parseInt(limit);
		const skip = (queryPage - 1) * queryLimit;

		let where = {};

		if (filterDate) {
			where.preferredDate = {
				gte: new Date(`${filterDate}T00:00:00.000Z`),
				lte: new Date(`${filterDate}T23:59:59.999Z`),
			};
		} else if (startDate || endDate) {
			where.preferredDate = {};
			if (startDate) {
				where.preferredDate.gte = new Date(`${startDate}T00:00:00.000Z`);
			}
			if (endDate) {
				where.preferredDate.lte = new Date(`${endDate}T23:59:59.999Z`);
			}
		}

		const [total, inquiries] = await prisma.$transaction([
			prisma.healthPackageInquiry.count({ where }),
			prisma.healthPackageInquiry.findMany({
				where,
				skip,
				take: queryLimit,
				include: {
					healthPackage: {
						include: { category: true },
					},
				},
				orderBy: { createdAt: "desc" },
			}),
		]);

		return res.status(200).json({
			success: true,
			data: inquiries,
			pagination: {
				total,
				page: queryPage,
				limit: queryLimit,
				totalPages: Math.ceil(total / queryLimit),
			},
		});
	} catch (error) {
		console.error(error);
		return res
			.status(500)
			.json({ success: false, message: "Failed to fetch inquiries" });
	}
};