import { Entity, Column, PrimaryGeneratedColumn, CreateDateColumn, UpdateDateColumn, ManyToOne, OneToMany } from 'typeorm';
import { Customer } from '../customers/customer.entity';
import { Contract } from '../contracts/contract.entity';
import { Purchase } from '../purchases/purchase.entity';
import { Subcontract } from '../subcontracts/subcontract.entity';
import { FinancialRecord } from '../finance/financial-record.entity';
import { ExpenseClaim } from '../finance/expense-claim.entity';
import { AdvancePayment } from '../finance/advance-payment.entity';

@Entity('projects')
export class Project {
  @PrimaryGeneratedColumn('uuid')
  id: string;

  @Column({ type: 'varchar', length: 255, nullable: false })
  name: string;

  @Column({ type: 'uuid', nullable: true })
  customer_id: string;

  @ManyToOne(() => Customer, customer => customer.projects)
  customer: Customer;

  @Column({ type: 'varchar', length: 100, unique: true, nullable: false })
  contract_number: string;

  @Column({ type: 'decimal', precision: 18, scale: 2, nullable: false })
  contract_amount: number;

  @Column({ type: 'varchar', length: 10, nullable: false })
  currency: string;

  @Column({ type: 'decimal', precision: 18, scale: 2, nullable: false })
  rmb_equivalent: number;

  @Column({ type: 'date', nullable: true })
  start_date: Date;

  @Column({ type: 'date', nullable: true })
  end_date: Date;

  @Column({ type: 'varchar', length: 50, nullable: false })
  status: string;

  @Column({ type: 'varchar', length: 20, nullable: true })
  settlement_type: string; // 'lump_sum' 或 'unit_price'

  @Column({ type: 'decimal', precision: 18, scale: 2, nullable: true })
  estimated_quantity: number;

  @Column({ type: 'decimal', precision: 18, scale: 2, nullable: true })
  unit_price: number;

  @CreateDateColumn()
  created_at: Date;

  @UpdateDateColumn()
  updated_at: Date;

  @OneToMany(() => Contract, contract => contract.project)
  contracts: Contract[];

  @OneToMany(() => Purchase, purchase => purchase.project)
  purchases: Purchase[];

  @OneToMany(() => Subcontract, subcontract => subcontract.project)
  subcontracts: Subcontract[];

  @OneToMany(() => FinancialRecord, financialRecord => financialRecord.project)
  financial_records: FinancialRecord[];

  @OneToMany(() => ExpenseClaim, expenseClaim => expenseClaim.project)
  expense_claims: ExpenseClaim[];

  @OneToMany(() => AdvancePayment, advancePayment => advancePayment.project)
  advance_payments: AdvancePayment[];
}