import {
  Entity,
  PrimaryGeneratedColumn,
  Column,
  ManyToOne,
  JoinColumn,
  OneToMany,
} from "typeorm"
import { BaseEntity } from "../../common/entities/base.entity"
import { Company } from "../../company/entities/company.entity"
import { Employee } from "../../employees/entities/employee.entity"
import { LeaveType } from "../../leave-types/entities/leave-type.entity"
import { LeaveRequestApprovalLog } from "./leave-request-approval-log.entity"

export enum LeaveRequestStatus {
  PENDING = "pending",
  APPROVED = "approved",
  REJECTED = "rejected",
  CANCELLED = "cancelled",
}

export enum LeaveDayType {
  FULL = "FULL",
  FIRST_HALF = "FIRST_HALF",
  SECOND_HALF = "SECOND_HALF",
}

@Entity("leave_requests")
export class LeaveRequest extends BaseEntity {
  @PrimaryGeneratedColumn()
  id: number

  @Column({ type: "int", nullable: false })
  company_id: number

  @Column({ type: "int", nullable: false })
  employee_id: number

  @Column({ type: "int", nullable: false })
  leave_type_id: number

  @Column({ type: "date", nullable: false })
  from_date: Date

  @Column({ type: "date", nullable: false })
  to_date: Date

  @Column({ type: "decimal", precision: 5, scale: 2, nullable: false })
  duration_days: number

  @Column({ type: "text", nullable: false })
  reason: string

  @Column({
    type: "enum",
    enum: LeaveRequestStatus,
    default: LeaveRequestStatus.PENDING,
  })
  status: LeaveRequestStatus

  @Column({ type: "int", nullable: true })
  approved_by: number

  @Column({ type: "timestamp", nullable: true })
  approved_at: Date

  @Column({ type: "text", nullable: true })
  comments: string

  @Column({
    type: "varchar",
    length: 20,
    default: LeaveDayType.FULL,
  })
  leave_day_type: string

  @ManyToOne(() => Company)
  @JoinColumn({ name: "company_id" })
  company: Company

  @ManyToOne(() => Employee)
  @JoinColumn({ name: "employee_id" })
  employee: Employee

  @ManyToOne(() => LeaveType)
  @JoinColumn({ name: "leave_type_id" })
  leaveType: LeaveType

  @ManyToOne(() => Employee)
  @JoinColumn({ name: "approved_by" })
  approvedBy: Employee

  @OneToMany(() => LeaveRequestApprovalLog, (log) => log.leaveRequest)
  approvalLogs: LeaveRequestApprovalLog[]
}