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import { PrismaService } from '../../database/prisma.service'
import { CreateDonationParams } from './interfaces/donation-service.interface'
import { BadRequestException, NotFoundException } from '@nestjs/common'
import { PaymentService } from './services/payment.service'
import { GatewayGateway } from '../gateway/gateway.gateway'
import { EmailProducer } from '../queue/producers/email.producer'
import { EventsService } from '../events/events.service'
@Injectable()
export class DonationService {
constructor(
private readonly prisma: PrismaService,
private readonly paymentService: PaymentService,
private readonly donationGateway: GatewayGateway,
private readonly emailProducer: EmailProducer,
private readonly eventsService: EventsService,
) {}
/**
* Unified processor for successful donations from any source (Stripe, PayPal, Offline)
*/
async processSuccessfulDonation(data: {
amount: number
currency: string
transactionId: string
paymentMethod: string
donorName?: string
donorEmail?: string
isAnonymous?: boolean
message?: string
metadata?: any
eventId: string
staffMemberId?: string
}) {
// 1. Persist to DB
const donation = await this.create({
amount: data.amount,
currency: data.currency,
transactionId: data.transactionId,
status: 'COMPLETED',
paymentMethod: data.paymentMethod,
donorName: data.donorName,
donorEmail: data.donorEmail,
isAnonymous: data.isAnonymous,
message: data.message,
metadata: data.metadata,
eventId: data.eventId,
staffMemberId: data.staffMemberId,
})
// 2. Emit to Live Screen
this.donationGateway.emitDonation({
amount: data.amount,
currency: data.currency,
donorName: data.donorName || 'Anonymous',
message: data.message,
isAnonymous: data.isAnonymous,
eventId: data.eventId,
})
// 3. Send Email Receipt
Eif (data.donorEmail) {
try {
const event = await this.eventsService.findOne(data.eventId)
Eif (event) {
await this.emailProducer.sendReceipt(
data.donorEmail,
data.amount / 100,
data.transactionId,
event.slug,
)
}
} catch (e) {
console.error('Failed to send receipt email', e)
}
}
return donation
}
async create(data: CreateDonationParams) {
let eventId = data.eventId
// Validate if provided event exists
if (eventId) {
const exists = await this.prisma.event.count({ where: { id: eventId } })
if (exists === 0) {
console.warn(
`Donation attempt with invalid eventId: ${eventId}. Falling back to default.`,
)
eventId = undefined
}
}
if (!eventId) {
const defaultEvent = await this.prisma.event.findFirst({
select: { id: true },
})
if (defaultEvent) {
eventId = defaultEvent.id
} else {
throw new Error('No event found to link donation to.')
}
}
try {
return await this.prisma.donation.create({
data: {
amount: data.amount,
currency: data.currency || 'EUR',
donorName: data.donorName,
donorEmail: data.donorEmail,
message: data.message,
isAnonymous: data.isAnonymous ?? false,
status: data.status,
paymentMethod: data.paymentMethod,
transactionId: data.transactionId,
eventId: eventId,
staffMemberId: data.staffMemberId,
},
})
} catch (error) {
console.error('Error creating donation:', error)
throw error
}
}
async update(
id: string,
data: {
donorName?: string
donorEmail?: string
isAnonymous?: boolean
message?: string
},
) {
return this.prisma.donation.update({
where: { id },
data,
})
}
async cancel(id: string, shouldRefund: boolean = false) {
const donation = await this.prisma.donation.findUnique({ where: { id } })
if (!donation) throw new NotFoundException('Donation not found')
if (donation.status === 'CANCELLED' || donation.status === 'REFUNDED') {
throw new BadRequestException('Donation is already cancelled or refunded')
}
let newStatus = 'CANCELLED'
if (shouldRefund) {
// Verify refund capability
if (!donation.transactionId) {
if (donation.paymentMethod === 'stripe' || donation.paymentMethod === 'paypal') {
throw new BadRequestException('Cannot refund: Missing Transaction ID')
}
newStatus = 'REFUNDED' // Cash/Other just mark refunded
} else {
try {
Eif (donation.transactionId) {
await this.paymentService.refundDonation(donation.transactionId)
}
newStatus = 'REFUNDED'
} catch (error) {
console.error('Refund failed:', error)
throw new BadRequestException('Failed to process refund')
}
}
}
return this.prisma.donation.update({
where: { id },
data: { status: newStatus },
})
}
async findAll(
eventId?: string,
limit: number = 50,
offset: number = 0,
search?: string,
status?: string,
) {
const where: any = {}
Eif (eventId) where.eventId = eventId
Eif (status && status !== 'all') where.status = status
Eif (search) {
where.OR = [
{ donorName: { contains: search, mode: 'insensitive' } },
{ donorEmail: { contains: search, mode: 'insensitive' } },
]
}
const [data, total] = await Promise.all([
this.prisma.donation.findMany({
where,
orderBy: { createdAt: 'desc' },
take: Number(limit),
skip: Number(offset),
include: {
staffMember: {
select: { id: true, name: true, code: true },
},
},
}),
this.prisma.donation.count({ where }),
])
return { data, total }
}
/**
* Generates a CSV string for all donations matching the criteria.
*/
async getExportData(eventId?: string, search?: string, status?: string): Promise<string> {
const where: any = {}
Eif (eventId) where.eventId = eventId
Eif (status && status !== 'all') where.status = status
Eif (search) {
where.OR = [
{ donorName: { contains: search, mode: 'insensitive' } },
{ donorEmail: { contains: search, mode: 'insensitive' } },
]
}
const donations = await this.prisma.donation.findMany({
where,
orderBy: { createdAt: 'desc' },
})
const headers = [
'ID',
'Date',
'Donor Name',
'Donor Email',
'Amount',
'Currency',
'Status',
'Payment Method',
'Message',
'Anonymous',
]
const csvRows = [headers.join(',')]
for (const donation of donations) {
const row = [
donation.id,
donation.createdAt.toISOString(),
`"${(donation.donorName || '').replace(/"/g, '""')}"`,
donation.donorEmail || '',
donation.amount.toString(),
donation.currency,
donation.status,
donation.paymentMethod,
`"${(donation.message || '').replace(/"/g, '""')}"`,
donation.isAnonymous,
]
csvRows.push(row.join(','))
}
return csvRows.join('\n')
}
}
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