Invoice Endpoints

GET /api/invoices?take=20&skip=0&relations[]=toContact&relations[]=fromOrganization
Authorization: Bearer {token}

{
  "items": [
    {
      "id": "...",
      "invoiceNumber": "INV-001",
      "invoiceDate": "2024-01-15T00:00:00.000Z",
      "dueDate": "2024-02-15T00:00:00.000Z",
      "currency": "USD",
      "discountValue": 10,
      "discountType": "PERCENT",
      "tax": 7.5,
      "tax2": 0,
      "totalValue": 5000,
      "status": "SENT",
      "sentTo": "client@example.com",
      "isEstimate": false,
      "organizationId": "...",
      "toContactId": "..."
    }
  ],
  "total": 25
}

POST /api/invoices
Authorization: Bearer {token}
Content-Type: application/json

{
  "invoiceNumber": "INV-002",
  "invoiceDate": "2024-01-15",
  "dueDate": "2024-02-15",
  "currency": "USD",
  "discountValue": 10,
  "discountType": "PERCENT",
  "tax": 7.5,
  "totalValue": 5000,
  "toContactId": "contact-uuid",
  "organizationId": "org-uuid",
  "invoiceItems": [
    {
      "description": "Development services",
      "quantity": 40,
      "price": 125,
      "totalValue": 5000,
      "applyTax": true,
      "applyDiscount": true
    }
  ]
}

PUT /api/invoices/{id}/email
Authorization: Bearer {token}
Content-Type: application/json

{
  "email": "client@example.com"
}

POST /api/invoices
Content-Type: application/json

{
  "isEstimate": true,
  "invoiceNumber": "EST-001",
  ...
}

PUT /api/invoices/{estimate-id}/convert
Authorization: Bearer {token}

GET /api/payment?where[invoiceId]={invoice-id}
Authorization: Bearer {token}

POST /api/payment
Authorization: Bearer {token}
Content-Type: application/json

{
  "invoiceId": "invoice-uuid",
  "paymentDate": "2024-02-10",
  "amount": 2500,
  "currency": "USD",
  "paymentMethod": "BANK_TRANSFER",
  "note": "Partial payment",
  "organizationId": "org-uuid"
}