feat: Add contact form submission and message management functionality.

src/contact/contact.service.ts

@@ -0,0 +1,42 @@
+import { Injectable, NotFoundException } from '@nestjs/common';
+import { PrismaService } from '../prisma/prisma.service';
+
+@Injectable()
+export class ContactService {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async createMessage(data: { name: string; email: string; phone?: string; message: string }) {
+    return this.prisma.contactMessage.create({ data });
+  }
+
+  async getAllMessages(isRead?: boolean) {
+    const where = isRead !== undefined ? { isRead } : {};
+    return this.prisma.contactMessage.findMany({
+      where,
+      orderBy: { createdAt: 'desc' },
+    });
+  }
+
+  async markAsRead(id: string) {
+    const msg = await this.prisma.contactMessage.findUnique({ where: { id } });
+    if (!msg) throw new NotFoundException('Contact message not found');
+    return this.prisma.contactMessage.update({
+      where: { id },
+      data: { isRead: true },
+    });
+  }
+
+  async deleteMessage(id: string) {
+    const msg = await this.prisma.contactMessage.findUnique({ where: { id } });
+    if (!msg) throw new NotFoundException('Contact message not found');
+    return this.prisma.contactMessage.delete({ where: { id } });
+  }
+
+  async getCounts() {
+    const [total, unread] = await Promise.all([
+      this.prisma.contactMessage.count(),
+      this.prisma.contactMessage.count({ where: { isRead: false } }),
+    ]);
+    return { total, unread };
+  }
+}