export class NativeSpan implements Span {
  readonly _tag = "Span"
  readonly spanId: string
  readonly traceId: string = "native"
  readonly sampled: boolean

  readonly name: string
  readonly parent: Option.Option<AnySpan>
  readonly annotations: Context.Context<never>
  readonly links: Array<SpanLink>
  readonly startTime: bigint
  readonly kind: SpanKind

  status: SpanStatus
  attributes: Map<string, unknown>
  events: Array<[name: string, startTime: bigint, attributes: Record<string, unknown>]> = []

  constructor(options: {
    readonly name: string
    readonly parent: Option.Option<AnySpan>
    readonly annotations: Context.Context<never>
    readonly links: Array<SpanLink>
    readonly startTime: bigint
    readonly kind: SpanKind
    readonly sampled: boolean
  }) {
    this.name = options.name
    this.parent = options.parent
    this.annotations = options.annotations
    this.links = options.links
    this.startTime = options.startTime
    this.kind = options.kind
    this.sampled = options.sampled
    this.status = {
      _tag: "Started",
      startTime: options.startTime
    }
    this.attributes = new Map()
    this.traceId = Option.getOrUndefined(options.parent)?.traceId ?? randomHexString(32)
    this.spanId = randomHexString(16)
  }

  end(endTime: bigint, exit: Exit.Exit<unknown, unknown>): void {
    this.status = {
      _tag: "Ended",
      endTime,
      exit,
      startTime: this.status.startTime
    }
  }

  attribute(key: string, value: unknown): void {
    this.attributes.set(key, value)
  }

  event(name: string, startTime: bigint, attributes?: Record<string, unknown>): void {
    this.events.push([name, startTime, attributes ?? {}])
  }

  addLinks(links: ReadonlyArray<SpanLink>): void {
    // oxlint-disable-next-line no-restricted-syntax
    this.links.push(...links)
  }
}