export type ID = string

export type AccountType = 'asset' | 'liability' | 'equity' | 'income' | 'expense'

export interface Account {
  id: ID
  code: string
  name: string
  type: AccountType
  parentId: ID | null
  isGroup: boolean
  openingBalance: number
}

export interface VoucherLine {
  id: ID
  accountId: ID
  description: string
  debit: number
  credit: number
}

export type VoucherStatus = 'draft' | 'posted'

export interface Voucher {
  id: ID
  number: number
  date: string
  description: string
  /** Event or subject the voucher relates to (بابت). */
  regarding?: string
  status: VoucherStatus
  lines: VoucherLine[]
  /** Set when the voucher was generated automatically by another module. */
  source?: string
}

export type PartyKind = 'customer' | 'supplier'

export type PartyExternalSource = '' | 'funzone_customer' | 'funzone_owner'

export interface Party {
  id: ID
  kind: PartyKind
  name: string
  phone: string
  economicCode: string
  address: string
  openingBalance: number
  /** FunZone user id when synced from the platform. */
  externalId?: ID
  externalSource?: PartyExternalSource
  firstName?: string
  lastName?: string
  username?: string
  email?: string
  nationalCode?: string
  iban?: string
  walletBalance?: number
  isActive?: boolean
  isVerified?: boolean
  birthday?: string | null
  /** Venue names for owner/supplier records. */
  venues?: string[]
}

export interface Product {
  id: ID
  code: string
  name: string
  unit: string
  salePrice: number
  purchasePrice: number
  stock: number
  reorderLevel: number
}

export type SalesDocumentType = 'proforma' | 'invoice' | 'return'

export interface SalesType {
  id: ID
  code: string
  name: string
  description: string
  active: boolean
}

export type AdjustmentKind = 'debit' | 'credit'

/** Debit/credit notice adjusting customer receivable (اعلامیه بدهکار/بستانکار). */
export interface PartyAdjustment {
  id: ID
  number: number
  partyId: ID
  kind: AdjustmentKind
  date: string
  amount: number
  description: string
}

export interface InvoiceLine {
  id: ID
  productId: ID
  quantity: number
  unitPrice: number
  discount: number
  taxRate: number
  /** FunZone event the customer paid for (shown in کالا / بابت). */
  eventName?: string
}

export type InvoiceKind = 'sale' | 'purchase'
export type InvoiceStatus = 'draft' | 'confirmed' | 'paid'

export interface Invoice {
  id: ID
  kind: InvoiceKind
  documentType: SalesDocumentType
  number: number
  partyId: ID
  salesTypeId?: ID
  relatedInvoiceId?: ID
  date: string
  status: InvoiceStatus
  note: string
  lines: InvoiceLine[]
}

export type TreasuryKind = 'receipt' | 'payment'
export type TreasuryMethod = 'cash' | 'bank' | 'cheque'

export interface TreasuryTxn {
  id: ID
  number: number
  kind: TreasuryKind
  method: TreasuryMethod
  date: string
  partyId: ID | null
  amount: number
  /** Event ticket fee split (FunZone): tax 10%, platform profit 14%, owner net 76%. */
  taxAmount?: number
  platformProfitAmount?: number
  ownerNetAmount?: number
  reference: string
  description: string
  /** FunZone event name when imported from customer payments. */
  eventName?: string
  /** Set when imported from FunZone platform (dedup key). */
  source?: string
}

export interface Employee {
  id: ID
  code: string
  name: string
  position: string
  baseSalary: number
  insuranceNo: string
  hireDate: string
  active: boolean
}

export interface Payslip {
  id: ID
  employeeId: ID
  period: string
  baseSalary: number
  overtime: number
  bonus: number
  deductions: number
  insurance: number
  tax: number
}

/** Account mapping used to auto-generate journal vouchers from live FunZone data. */
export interface VoucherAccountMap {
  /** Cash/bank settlement account (debit on inflow, credit on outflow). */
  bankAccountId: ID
  /** Liability owed to venue owners (their wallet balance). */
  ownerPayableAccountId: ID
  /** Liability owed to customers (their wallet balance). */
  customerPayableAccountId: ID
  /** Expense recognising the owner's share of a booking. */
  ownerShareAccountId: ID
  /** Income account for reservation/ticket sales. */
  salesIncomeAccountId: ID
}

export interface CompanySettings {
  name: string
  economicCode: string
  fiscalYear: string
  baseCurrency: string
  taxRate: number
  address: string
  phone: string
  voucherAccounts: VoucherAccountMap
}

export interface AppData {
  accounts: Account[]
  vouchers: Voucher[]
  parties: Party[]
  products: Product[]
  invoices: Invoice[]
  salesTypes: SalesType[]
  partyAdjustments: PartyAdjustment[]
  treasury: TreasuryTxn[]
  employees: Employee[]
  payslips: Payslip[]
  settings: CompanySettings
}