/**
 * API Request Schemas
 * Schemas for data that the backend receives and validates
 * These are the "source of truth" for business logic validation
 */

import { z } from 'zod';
import {
  emailSchema,
  passwordSchema,
  nameSchema,
  phoneSchema,
  addressSchema,
  requiredAddressSchema,
  genderEnum,
} from '../shared/primitives';

// =====================================================
// AUTH REQUEST SCHEMAS
// =====================================================

export const loginRequestSchema = z.object({
  email: emailSchema,
  password: z.string().min(1, 'Password is required'),
});

export const signupRequestSchema = z.object({
  email: emailSchema,
  password: passwordSchema,
  firstName: nameSchema,
  lastName: nameSchema,
  company: z.string().optional(),
  phone: phoneSchema,
  sfNumber: z.string().min(6, 'Customer number must be at least 6 characters'),
  address: requiredAddressSchema,
  nationality: z.string().optional(),
  dateOfBirth: z.string().date().optional(),
  gender: genderEnum.optional(),
});

export const passwordResetRequestSchema = z.object({
  email: emailSchema,
});

export const passwordResetSchema = z.object({
  token: z.string().min(1, 'Reset token is required'),
  password: passwordSchema,
});

export const setPasswordRequestSchema = z.object({
  email: emailSchema,
  password: passwordSchema,
});

export const changePasswordRequestSchema = z.object({
  currentPassword: z.string().min(1, 'Current password is required'),
  newPassword: passwordSchema,
});

export const linkWhmcsRequestSchema = z.object({
  email: emailSchema,
  password: z.string().min(1, 'Password is required'),
});

export const validateSignupRequestSchema = z.object({
  sfNumber: z.string().min(1, 'Customer number is required'),
});

export const accountStatusRequestSchema = z.object({
  email: emailSchema,
});

export const ssoLinkRequestSchema = z.object({
  destination: z.string().optional(),
});

export const checkPasswordNeededRequestSchema = z.object({
  email: emailSchema,
});

export const refreshTokenRequestSchema = z.object({
  refreshToken: z.string().min(1, 'Refresh token is required'),
  deviceId: z.string().optional(),
});


// =====================================================
// TYPE EXPORTS
// =====================================================

export type LoginRequestInput = z.infer<typeof loginRequestSchema>;
export type SignupRequestInput = z.infer<typeof signupRequestSchema>;
export type PasswordResetRequestInput = z.infer<typeof passwordResetRequestSchema>;
export type PasswordResetInput = z.infer<typeof passwordResetSchema>;
export type SetPasswordRequestInput = z.infer<typeof setPasswordRequestSchema>;
export type ChangePasswordRequestInput = z.infer<typeof changePasswordRequestSchema>;
export type LinkWhmcsRequestInput = z.infer<typeof linkWhmcsRequestSchema>;
export type ValidateSignupRequestInput = z.infer<typeof validateSignupRequestSchema>;
export type AccountStatusRequestInput = z.infer<typeof accountStatusRequestSchema>;
export type SsoLinkRequestInput = z.infer<typeof ssoLinkRequestSchema>;
export type CheckPasswordNeededRequestInput = z.infer<typeof checkPasswordNeededRequestSchema>;
export type RefreshTokenRequestInput = z.infer<typeof refreshTokenRequestSchema>;

// =====================================================
// USER MANAGEMENT REQUEST SCHEMAS
// =====================================================

export const updateProfileRequestSchema = z.object({
  firstName: nameSchema.optional(),
  lastName: nameSchema.optional(),
  phone: phoneSchema.optional(),
  company: z.string().max(200).optional(),
});

export const updateAddressRequestSchema = addressSchema;

// =====================================================
// ORDER REQUEST SCHEMAS
// =====================================================

export const orderConfigurationsSchema = z.object({
  // Activation (All order types)
  activationType: z.enum(['Immediate', 'Scheduled']).optional(),
  scheduledAt: z.string().datetime().optional(),

  // Internet specific
  accessMode: z.enum(['IPoE-BYOR', 'IPoE-HGW', 'PPPoE']).optional(),

  // SIM specific
  simType: z.enum(['eSIM', 'Physical SIM']).optional(),
  eid: z.string().optional(), // Required for eSIM

  // MNP/Porting
  isMnp: z.string().optional(), // "true" | "false"
  mnpNumber: z.string().optional(),
  mnpExpiry: z.string().optional(),
  mnpPhone: z.string().optional(),
  mvnoAccountNumber: z.string().optional(),
  portingLastName: z.string().optional(),
  portingFirstName: z.string().optional(),
  portingLastNameKatakana: z.string().optional(),
  portingFirstNameKatakana: z.string().optional(),
  portingGender: z.enum(['Male', 'Female', 'Corporate/Other']).optional(),
  portingDateOfBirth: z.string().date().optional(),

  // Optional address override captured at checkout
  address: addressSchema.optional(),
});

export const createOrderRequestSchema = z.object({
  orderType: z.enum(['Internet', 'SIM', 'VPN', 'Other']),
  skus: z.array(z.string().min(1, 'SKU cannot be empty')),
  configurations: orderConfigurationsSchema.optional(),
});

// =====================================================
// SUBSCRIPTION MANAGEMENT REQUEST SCHEMAS
// =====================================================

export const simTopupRequestSchema = z.object({
  amount: z.number().positive('Amount must be positive'),
  currency: z.string().length(3, 'Currency must be 3 characters').default('JPY'),
  quotaMb: z.number().positive('Quota in MB must be positive'),
});

export const simCancelRequestSchema = z.object({
  reason: z.string().min(1, 'Cancellation reason is required').optional(),
  scheduledAt: z.string().regex(/^\d{8}$/, 'Scheduled date must be in YYYYMMDD format').optional(),
});

export const simChangePlanRequestSchema = z.object({
  newPlanSku: z.string().min(1, 'New plan SKU is required'),
  newPlanCode: z.string().min(1, 'New plan code is required'),
  effectiveDate: z.string().date().optional(),
});

export const simFeaturesRequestSchema = z.object({
  voiceMailEnabled: z.boolean().optional(),
  callWaitingEnabled: z.boolean().optional(),
  internationalRoamingEnabled: z.boolean().optional(),
  networkType: z.enum(['4G', '5G']).optional(),
});

// =====================================================
// CONTACT REQUEST SCHEMAS
// =====================================================

export const contactRequestSchema = z.object({
  subject: z.string().min(1, 'Subject is required').max(200, 'Subject is too long'),
  message: z.string().min(1, 'Message is required').max(2000, 'Message is too long'),
  category: z.enum(['technical', 'billing', 'account', 'general']),
  priority: z.enum(['low', 'medium', 'high', 'urgent']).default('medium'),
});

// =====================================================
// TYPE EXPORTS
// =====================================================

export type UpdateProfileRequest = z.infer<typeof updateProfileRequestSchema>;
export type UpdateAddressRequest = z.infer<typeof updateAddressRequestSchema>;
export type OrderConfigurations = z.infer<typeof orderConfigurationsSchema>;
export type CreateOrderRequest = z.infer<typeof createOrderRequestSchema>;
export type SimTopupRequest = z.infer<typeof simTopupRequestSchema>;
export type SimCancelRequest = z.infer<typeof simCancelRequestSchema>;
export type SimChangePlanRequest = z.infer<typeof simChangePlanRequestSchema>;
export type SimFeaturesRequest = z.infer<typeof simFeaturesRequestSchema>;
export type ContactRequest = z.infer<typeof contactRequestSchema>;

// =====================================================
// INVOICE SCHEMAS
// =====================================================

export const invoiceItemSchema = z.object({
  id: z.number().int().positive(),
  description: z.string().min(1, 'Description is required'),
  amount: z.number().nonnegative('Amount must be non-negative'),
  quantity: z.number().int().positive().optional().default(1),
  type: z.string().min(1, 'Type is required'),
  serviceId: z.number().int().positive().optional(),
});

export const invoiceSchema = z.object({
  id: z.number().int().positive(),
  number: z.string().min(1, 'Invoice number is required'),
  status: z.string().min(1, 'Status is required'),
  currency: z.string().length(3, 'Currency must be 3 characters'),
  currencySymbol: z.string().optional(),
  total: z.number().nonnegative('Total must be non-negative'),
  subtotal: z.number().nonnegative('Subtotal must be non-negative'),
  tax: z.number().nonnegative('Tax must be non-negative'),
  issuedAt: z.string().datetime().optional(),
  dueDate: z.string().datetime().optional(),
  paidDate: z.string().datetime().optional(),
  pdfUrl: z.string().url().optional(),
  paymentUrl: z.string().url().optional(),
  description: z.string().optional(),
  items: z.array(invoiceItemSchema).optional(),
});

export const paginationSchema = z.object({
  page: z.number().int().min(1),
  totalPages: z.number().int().min(0),
  totalItems: z.number().int().min(0),
  nextCursor: z.string().optional(),
});

export const invoiceListSchema = z.object({
  invoices: z.array(invoiceSchema),
  pagination: paginationSchema,
});

// =====================================================
// INVOICE TYPE EXPORTS
// =====================================================

export type InvoiceItem = z.infer<typeof invoiceItemSchema>;
export type Invoice = z.infer<typeof invoiceSchema>;
export type Pagination = z.infer<typeof paginationSchema>;
export type InvoiceList = z.infer<typeof invoiceListSchema>;

// =====================================================
// ID MAPPING SCHEMAS
// =====================================================

export const createMappingRequestSchema = z.object({
  userId: z.string().uuid('User ID must be a valid UUID'),
  whmcsClientId: z.number().int().positive('WHMCS client ID must be a positive integer'),
  sfAccountId: z.string().regex(/^[a-zA-Z0-9]{15}$|^[a-zA-Z0-9]{18}$/, 'Salesforce account ID must be a valid 15 or 18 character ID').optional(),
});

export const updateMappingRequestSchema = z.object({
  whmcsClientId: z.number().int().positive('WHMCS client ID must be a positive integer').optional(),
  sfAccountId: z.string().regex(/^[a-zA-Z0-9]{15}$|^[a-zA-Z0-9]{18}$/, 'Salesforce account ID must be a valid 15 or 18 character ID').optional(),
}).refine(
  (data) => data.whmcsClientId !== undefined || data.sfAccountId !== undefined,
  { message: 'At least one field must be provided for update' }
);

export const userIdMappingSchema = z.object({
  userId: z.string().uuid('User ID must be a valid UUID'),
  whmcsClientId: z.number().int().positive('WHMCS client ID must be a positive integer'),
  sfAccountId: z.string().regex(/^[a-zA-Z0-9]{15}$|^[a-zA-Z0-9]{18}$/, 'Salesforce account ID must be a valid 15 or 18 character ID').optional(),
  createdAt: z.string().datetime().optional(),
  updatedAt: z.string().datetime().optional(),
});

// =====================================================
// ID MAPPING TYPE EXPORTS
// =====================================================

export type CreateMappingRequest = z.infer<typeof createMappingRequestSchema>;
export type UpdateMappingRequest = z.infer<typeof updateMappingRequestSchema>;
export type UserIdMapping = z.infer<typeof userIdMappingSchema>;
export type UpdateProfileRequestInput = z.infer<typeof updateProfileRequestSchema>;
export type UpdateAddressRequestInput = z.infer<typeof updateAddressRequestSchema>;
export type ContactRequestInput = z.infer<typeof contactRequestSchema>;