/**
 * UnitStatus Entity
 * Mecanicas Diesel - ERP Suite
 *
 * Real-time status of fleet units for dispatch.
 * Module: MMD-011 Dispatch Center
 */

import {
  Entity,
  PrimaryGeneratedColumn,
  Column,
  UpdateDateColumn,
  Index,
} from 'typeorm';

export enum UnitStatusEnum {
  AVAILABLE = 'available',
  ASSIGNED = 'assigned',
  EN_ROUTE = 'en_route',
  ON_SITE = 'on_site',
  RETURNING = 'returning',
  OFFLINE = 'offline',
  MAINTENANCE = 'maintenance',
}

export enum UnitCapacity {
  LIGHT = 'light',
  MEDIUM = 'medium',
  HEAVY = 'heavy',
}

@Entity({ name: 'unit_statuses', schema: 'dispatch' })
@Index('idx_unit_statuses_tenant_unit', ['tenantId', 'unitId'], { unique: true })
@Index('idx_unit_statuses_status', ['tenantId', 'status'])
export class UnitStatus {
  @PrimaryGeneratedColumn('uuid')
  id: string;

  @Column({ name: 'tenant_id', type: 'uuid' })
  tenantId: string;

  // Unit reference
  @Column({ name: 'unit_id', type: 'uuid' })
  unitId: string;

  @Column({ name: 'unit_code', type: 'varchar', length: 50, nullable: true })
  unitCode?: string;

  @Column({ name: 'unit_name', type: 'varchar', length: 100, nullable: true })
  unitName?: string;

  // Status
  @Column({
    type: 'varchar',
    length: 20,
    default: UnitStatusEnum.OFFLINE,
  })
  status: UnitStatusEnum;

  // Current assignment
  @Column({ name: 'current_incident_id', type: 'uuid', nullable: true })
  currentIncidentId?: string;

  @Column({ name: 'current_technician_ids', type: 'uuid', array: true, default: [] })
  currentTechnicianIds: string[];

  // Location (cached from GPS)
  @Column({ name: 'last_position_id', type: 'uuid', nullable: true })
  lastPositionId?: string;

  @Column({ name: 'last_known_lat', type: 'decimal', precision: 10, scale: 7, nullable: true })
  lastKnownLat?: number;

  @Column({ name: 'last_known_lng', type: 'decimal', precision: 10, scale: 7, nullable: true })
  lastKnownLng?: number;

  @Column({ name: 'last_location_update', type: 'timestamptz', nullable: true })
  lastLocationUpdate?: Date;

  // Timing
  @Column({ name: 'last_status_change', type: 'timestamptz', default: () => 'NOW()' })
  lastStatusChange: Date;

  @Column({ name: 'estimated_available_at', type: 'timestamptz', nullable: true })
  estimatedAvailableAt?: Date;

  // Capacity and capabilities
  @Column({
    name: 'unit_capacity',
    type: 'varchar',
    length: 20,
    default: UnitCapacity.LIGHT,
  })
  unitCapacity: UnitCapacity;

  @Column({ name: 'can_tow', type: 'boolean', default: false })
  canTow: boolean;

  @Column({ name: 'max_tow_weight_kg', type: 'integer', nullable: true })
  maxTowWeightKg?: number;

  @Column({ type: 'text', nullable: true })
  notes?: string;

  @Column({ type: 'jsonb', default: {} })
  metadata: Record<string, any>;

  @UpdateDateColumn({ name: 'updated_at', type: 'timestamptz' })
  updatedAt: Date;
}