import {
  pgTable,
  text,
  numeric,
  integer,
  timestamp,
  date,
  index,
  uniqueIndex,
  primaryKey,
} from 'drizzle-orm/pg-core';
import { ports } from './ports';
import { files } from './documents';

export const expenses = pgTable(
  'expenses',
  {
    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
    portId: text('port_id')
      .notNull()
      .references(() => ports.id),
    establishmentName: text('establishment_name'),
    amount: numeric('amount').notNull(),
    currency: text('currency').notNull().default('USD'),
    amountUsd: numeric('amount_usd'),
    exchangeRate: numeric('exchange_rate'),
    paymentMethod: text('payment_method'),
    category: text('category'),
    payer: text('payer'),
    expenseDate: timestamp('expense_date', { withTimezone: true }).notNull(),
    description: text('description'),
    receiptFileIds: text('receipt_file_ids').array(), // references to files table
    paymentStatus: text('payment_status').default('unpaid'), // unpaid, paid, partial
    paymentDate: date('payment_date'),
    paymentReference: text('payment_reference'),
    paymentNotes: text('payment_notes'),
    createdBy: text('created_by').notNull(),
    archivedAt: timestamp('archived_at', { withTimezone: true }),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (table) => [
    index('idx_expenses_port').on(table.portId),
    index('idx_expenses_date').on(table.portId, table.expenseDate),
    index('idx_expenses_category').on(table.portId, table.category),
  ],
);

export const invoices = pgTable(
  'invoices',
  {
    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
    portId: text('port_id')
      .notNull()
      .references(() => ports.id),
    invoiceNumber: text('invoice_number').notNull(), // INV-YYYYMM-### auto-generated
    clientName: text('client_name').notNull(),
    billingEmail: text('billing_email'),
    billingAddress: text('billing_address'),
    dueDate: date('due_date').notNull(),
    paymentTerms: text('payment_terms').notNull().default('net30'), // immediate, net10, net15, net30, net45, net60
    currency: text('currency').notNull().default('USD'),
    subtotal: numeric('subtotal').notNull(),
    discountPct: numeric('discount_pct').default('0'),
    discountAmount: numeric('discount_amount').default('0'),
    feePct: numeric('fee_pct').default('0'),
    feeAmount: numeric('fee_amount').default('0'),
    total: numeric('total').notNull(),
    status: text('status').notNull().default('draft'), // draft, sent, paid, overdue, cancelled
    paymentStatus: text('payment_status').default('unpaid'),
    paymentDate: date('payment_date'),
    paymentMethod: text('payment_method'),
    paymentReference: text('payment_reference'),
    pdfFileId: text('pdf_file_id').references(() => files.id),
    notes: text('notes'),
    createdBy: text('created_by').notNull(),
    archivedAt: timestamp('archived_at', { withTimezone: true }),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (table) => [
    uniqueIndex('idx_invoices_number').on(table.portId, table.invoiceNumber),
    index('idx_invoices_port').on(table.portId),
    index('idx_invoices_status').on(table.portId, table.status),
  ],
);

export const invoiceLineItems = pgTable(
  'invoice_line_items',
  {
    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
    invoiceId: text('invoice_id')
      .notNull()
      .references(() => invoices.id, { onDelete: 'cascade' }),
    description: text('description').notNull(),
    quantity: numeric('quantity').notNull().default('1'),
    unitPrice: numeric('unit_price').notNull(),
    total: numeric('total').notNull(),
    sortOrder: integer('sort_order').notNull().default(0),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (table) => [index('idx_ili_invoice').on(table.invoiceId)],
);

export const invoiceExpenses = pgTable(
  'invoice_expenses',
  {
    invoiceId: text('invoice_id')
      .notNull()
      .references(() => invoices.id, { onDelete: 'cascade' }),
    expenseId: text('expense_id')
      .notNull()
      .references(() => expenses.id, { onDelete: 'cascade' }),
  },
  (table) => [primaryKey({ columns: [table.invoiceId, table.expenseId] })],
);

export type Expense = typeof expenses.$inferSelect;
export type NewExpense = typeof expenses.$inferInsert;
export type Invoice = typeof invoices.$inferSelect;
export type NewInvoice = typeof invoices.$inferInsert;
export type InvoiceLineItem = typeof invoiceLineItems.$inferSelect;
export type NewInvoiceLineItem = typeof invoiceLineItems.$inferInsert;
export type InvoiceExpense = typeof invoiceExpenses.$inferSelect;
export type NewInvoiceExpense = typeof invoiceExpenses.$inferInsert;