billing adn account

frontend/src/services/billing.api.ts

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+/**
+ * Billing API Service
+ * Handles all billing-related API calls
+ */
+
+import { fetchAPI } from './api';
+
+// ============================================================================
+// TYPES
+// ============================================================================
+
+export interface CreditPackage {
+  id: number;
+  name: string;
+  slug: string;
+  credits: number;
+  price: string;
+  discount_percentage: number;
+  is_featured: boolean;
+  description: string;
+  display_order: number;
+}
+
+export interface Invoice {
+  id: number;
+  invoice_number: string;
+  status: 'draft' | 'pending' | 'paid' | 'void';
+  total_amount: string;
+  subtotal: string;
+  tax_amount: string;
+  currency: string;
+  created_at: string;
+  paid_at: string | null;
+  due_date: string | null;
+  line_items: Array<{
+    description: string;
+    amount: string;
+    quantity: number;
+  }>;
+  billing_period_start: string | null;
+  billing_period_end: string | null;
+}
+
+export interface Payment {
+  id: number;
+  amount: string;
+  currency: string;
+  payment_method: 'stripe' | 'paypal' | 'bank_transfer' | 'local_wallet' | 'manual';
+  status: 'pending' | 'completed' | 'failed' | 'pending_approval';
+  created_at: string;
+  processed_at: string | null;
+  invoice_id: number;
+  invoice_number: string | null;
+  transaction_reference: string;
+  failure_reason: string | null;
+}
+
+export interface PaymentMethod {
+  type: string;
+  name: string;
+  instructions: string;
+  bank_details?: {
+    bank_name: string;
+    account_number: string;
+    routing_number: string;
+    swift_code: string;
+  };
+  wallet_details?: {
+    wallet_type: string;
+    wallet_id: string;
+  };
+}
+
+export interface CreditTransaction {
+  id: number;
+  amount: number;
+  transaction_type: string;
+  description: string;
+  created_at: string;
+  reference_id: string;
+  metadata: Record<string, any>;
+}
+
+export interface CreditBalance {
+  balance: number;
+  subscription_plan: string;
+  monthly_credits: number;
+  subscription_status: string | null;
+}
+
+export interface PendingPayment {
+  id: number;
+  account_name: string;
+  amount: string;
+  currency: string;
+  payment_method: string;
+  transaction_reference: string;
+  created_at: string;
+  invoice_number: string | null;
+  admin_notes: string;
+}
+
+// ============================================================================
+// CREDIT PACKAGES
+// ============================================================================
+
+export async function getCreditPackages(): Promise<{ results: CreditPackage[]; count: number }> {
+  return fetchAPI('/billing/v2/credit-packages/');
+}
+
+export async function purchaseCreditPackage(
+  packageId: number,
+  paymentMethod: string
+): Promise<{
+  invoice_id: number;
+  invoice_number: string;
+  total_amount: string;
+  message: string;
+  next_action: string;
+}> {
+  return fetchAPI(`/billing/v2/credit-packages/${packageId}/purchase/`, {
+    method: 'POST',
+    body: JSON.stringify({ payment_method: paymentMethod }),
+  });
+}
+
+// ============================================================================
+// INVOICES
+// ============================================================================
+
+export async function getInvoices(status?: string): Promise<{ results: Invoice[]; count: number }> {
+  const params = status ? `?status=${status}` : '';
+  return fetchAPI(`/billing/v2/invoices/${params}`);
+}
+
+export async function getInvoice(invoiceId: number): Promise<Invoice> {
+  return fetchAPI(`/billing/v2/invoices/${invoiceId}/`);
+}
+
+export async function downloadInvoicePDF(invoiceId: number): Promise<Blob> {
+  const response = await fetch(`/api/v1/billing/v2/invoices/${invoiceId}/download_pdf/`, {
+    headers: {
+      Authorization: `Bearer ${localStorage.getItem('access_token')}`,
+    },
+  });
+  
+  if (!response.ok) {
+    throw new Error('Failed to download invoice');
+  }
+  
+  return response.blob();
+}
+
+// ============================================================================
+// PAYMENTS
+// ============================================================================
+
+export async function getPayments(status?: string): Promise<{ results: Payment[]; count: number }> {
+  const params = status ? `?status=${status}` : '';
+  return fetchAPI(`/billing/v2/payments/${params}`);
+}
+
+export async function getAvailablePaymentMethods(): Promise<{
+  methods: PaymentMethod[];
+  stripe: boolean;
+  paypal: boolean;
+  bank_transfer: boolean;
+  local_wallet: boolean;
+}> {
+  return fetchAPI('/billing/v2/payments/available_methods/');
+}
+
+export async function submitManualPayment(data: {
+  invoice_id: number;
+  payment_method: 'bank_transfer' | 'local_wallet';
+  transaction_reference: string;
+  notes?: string;
+}): Promise<{
+  id: number;
+  status: string;
+  message: string;
+}> {
+  return fetchAPI('/billing/v2/payments/create_manual_payment/', {
+    method: 'POST',
+    body: JSON.stringify(data),
+  });
+}
+
+// ============================================================================
+// CREDIT TRANSACTIONS
+// ============================================================================
+
+export async function getCreditTransactions(): Promise<{
+  results: CreditTransaction[];
+  count: number;
+  current_balance: number;
+}> {
+  return fetchAPI('/billing/v2/transactions/');
+}
+
+export async function getCreditBalance(): Promise<CreditBalance> {
+  return fetchAPI('/billing/v2/transactions/balance/');
+}
+
+// ============================================================================
+// ADMIN - PAYMENT APPROVALS
+// ============================================================================
+
+export async function getPendingPayments(): Promise<{
+  results: PendingPayment[];
+  count: number;
+}> {
+  return fetchAPI('/billing/v2/admin/pending_payments/');
+}
+
+export async function approvePayment(
+  paymentId: number,
+  notes?: string
+): Promise<{
+  id: number;
+  status: string;
+  message: string;
+}> {
+  return fetchAPI(`/billing/v2/admin/${paymentId}/approve_payment/`, {
+    method: 'POST',
+    body: JSON.stringify({ notes }),
+  });
+}
+
+export async function rejectPayment(
+  paymentId: number,
+  reason: string
+): Promise<{
+  id: number;
+  status: string;
+  message: string;
+}> {
+  return fetchAPI(`/billing/v2/admin/${paymentId}/reject_payment/`, {
+    method: 'POST',
+    body: JSON.stringify({ reason }),
+  });
+}
+
+export async function getAdminBillingStats(): Promise<{
+  total_accounts: number;
+  active_subscriptions: number;
+  total_revenue: string;
+  pending_approvals: number;
+  invoices_pending: number;
+  invoices_paid: number;
+}> {
+  return fetchAPI('/billing/v2/admin/stats/');
+}