import { NextRequest, NextResponse } from 'next/server';
import { getDataSource, ContactRecord, Customer } from '@/lib/database';

// GET /api/contact-records/[id] - Get a specific contact record
export async function GET(
    request: NextRequest,
    props: { params: Promise<{ id: string }> }
) {
    try {
        const { id } = await props.params;
        const dataSource = await getDataSource();
        const contactRecordRepository = dataSource.getRepository(ContactRecord);

        const contactRecord = await contactRecordRepository.findOne({
            where: { id: id },
            relations: ['customer']
        });

        if (!contactRecord) {
            return NextResponse.json(
                { error: 'Contact record not found' },
                { status: 404 }
            );
        }

        return NextResponse.json(contactRecord);
    } catch (error) {
        console.error('Error fetching contact record:', error);
        return NextResponse.json(
            { error: 'Failed to fetch contact record' },
            { status: 500 }
        );
    }
}

// PUT /api/contact-records/[id] - Update a contact record
export async function PUT(
    request: NextRequest,
    props: { params: Promise<{ id: string }> }
) {
    try {
        const { id } = await props.params;
        const dataSource = await getDataSource();
        const contactRecordRepository = dataSource.getRepository(ContactRecord);
        const customerRepository = dataSource.getRepository(Customer);

        // Find the contact record to update
        const contactRecord = await contactRecordRepository.findOne({
            where: { id: id }
        });

        if (!contactRecord) {
            return NextResponse.json(
                { error: 'Contact record not found' },
                { status: 404 }
            );
        }

        const data = await request.json();
        const { customerId, contactType, notes } = data;

        // Validate required fields
        if (!contactType) {
            return NextResponse.json(
                { error: 'Contact type is required' },
                { status: 400 }
            );
        }

        // If customerId is changing, verify the new customer exists
        if (customerId && customerId !== contactRecord.customerId) {
            const customer = await customerRepository.findOne({
                where: { id: customerId }
            });

            if (!customer) {
                return NextResponse.json(
                    { error: 'Customer not found' },
                    { status: 404 }
                );
            }

            contactRecord.customerId = customerId;
        }

        // Update contact record fields
        contactRecord.contactType = contactType;
        contactRecord.notes = notes || '';

        // Save the updated contact record
        const updatedContactRecord = await contactRecordRepository.save(contactRecord);

        return NextResponse.json(updatedContactRecord);
    } catch (error) {
        console.error('Error updating contact record:', error);
        return NextResponse.json(
            { error: 'Failed to update contact record' },
            { status: 500 }
        );
    }
}

// DELETE /api/contact-records/[id] - Delete a contact record
export async function DELETE(
    request: NextRequest,
    props: { params: Promise<{ id: string }> }
) {
    try {
        const { id } = await props.params;
        const dataSource = await getDataSource();
        const contactRecordRepository = dataSource.getRepository(ContactRecord);

        // Find the contact record to delete
        const contactRecord = await contactRecordRepository.findOne({
            where: { id: id }
        });

        if (!contactRecord) {
            return NextResponse.json(
                { error: 'Contact record not found' },
                { status: 404 }
            );
        }

        // Delete the contact record
        await contactRecordRepository.remove(contactRecord);

        return NextResponse.json({ success: true });
    } catch (error) {
        console.error('Error deleting contact record:', error);
        return NextResponse.json(
            { error: 'Failed to delete contact record' },
            { status: 500 }
        );
    }
}