import {
  Column,
  CreateDateColumn,
  Entity,
  Index,
  JoinColumn,
  ManyToOne,
  PrimaryGeneratedColumn,
} from 'typeorm';
import { CharacterItem } from '../../items/entities/character-item.entity';
import { ItemDefinition } from '../../items/entities/item-definition.entity';
import { CombatReward } from './combat-reward.entity';

/**
 * What this specific combat dropped.
 *
 * Needed because `CharacterItem.quantity` is a running stack total: after a
 * duplicate drop it no longer says how much *this* victory granted, and a
 * refreshed reward screen must replay the original result (spec §25, §48).
 */
@Entity({ name: 'combat_reward_items' })
@Index('IDX_combat_reward_items_reward', ['combatRewardId'])
@Index('IDX_combat_reward_items_reward_item', ['combatRewardId', 'itemDefinitionId'], {
  unique: true,
})
export class CombatRewardItem {
  @PrimaryGeneratedColumn('uuid', { name: 'id' })
  id!: string;

  @Column({ name: 'combat_reward_id', type: 'uuid' })
  combatRewardId!: string;

  @Column({ name: 'character_item_id', type: 'uuid' })
  characterItemId!: string;

  @Column({ name: 'item_definition_id', type: 'uuid' })
  itemDefinitionId!: string;

  @Column({ name: 'quantity', type: 'integer' })
  quantity!: number;

  @CreateDateColumn({ name: 'created_at', type: 'timestamptz' })
  createdAt!: Date;

  @ManyToOne(() => CombatReward, { onDelete: 'CASCADE' })
  @JoinColumn({ name: 'combat_reward_id' })
  combatReward!: CombatReward;

  @ManyToOne(() => CharacterItem, { onDelete: 'RESTRICT' })
  @JoinColumn({ name: 'character_item_id' })
  characterItem!: CharacterItem;

  @ManyToOne(() => ItemDefinition, { onDelete: 'RESTRICT' })
  @JoinColumn({ name: 'item_definition_id' })
  itemDefinition!: ItemDefinition;
}