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

@Entity('channels')
@Index(['guildId', 'createdAt'])
export class Channel {
  @PrimaryGeneratedColumn('uuid')
  id!: string;

  @Index()
  @Column({ type: 'char', length: 36 })
  guildId!: string;

  @Column({ type: 'varchar', length: 120 })
  name!: string;

  @Column({
    name: 'x_type',
    type: 'enum',
    enum: ['general', 'work', 'report', 'discuss', 'triage', 'custom', 'dm', 'announce'],
  })
  xType!: 'general' | 'work' | 'report' | 'discuss' | 'triage' | 'custom' | 'dm' | 'announce';

  @Column({ type: 'varchar', length: 16, default: 'text' })
  kind!: 'text' | 'announcement';

  // Free-form description of what this channel is for — what topics get
  // posted, who participates, why it exists. Surfaced via GET /api/channels
  // so agents can pick a channel by intent ("which announce channel is for
  // debate broadcasts?") without channel id hard-coded into workflows.
  // Any channel member can set it via PATCH /api/channels/:id (writes
  // require membership the same way moveToBypass / close do). The frontend
  // create form does NOT post this today — purpose stays optional.
  @Column({ type: 'text', nullable: true })
  purpose!: string | null;

  @Column({ type: 'boolean', default: false })
  isPrivate!: boolean;

  // public channels are visible to every guild member (including those who
  // join after the channel was created); default off (unchecked)
  @Column({ type: 'boolean', default: false })
  isPublic!: boolean;

  // closed (e.g. discussion-complete): history readable, new posts rejected
  @Column({ type: 'boolean', default: false })
  closed!: boolean;

  @Index()
  @Column({ default: 0 })
  lastSeq!: number;

  @CreateDateColumn()
  @Index()
  createdAt!: Date;
}