/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 */

export type SectionComponentHierarchy = {|
  type: string,
  children: Array<SectionComponentHierarchy>,
|};

export type AddEventPayload = {|
  id: string,
  reason: string,
  stack_trace: Array<string>,
  skip_stack_trace_format?: boolean,
  surface_key: string,
  event_timestamp: number,
  update_mode: number,
  reentrant_count: number,
  payload: ?Object,
|};

export type UpdateTreeGenerationHierarchyGenerationPayload = {|
  hierarchy_generation_timestamp: number,
  id: string,
  reason: string,
  tree?: Array<{
    didTriggerStateUpdate?: boolean,
    identifier: string,
    isDirty?: boolean,
    isReused?: boolean,
    name: string,
    parent: string | '',
    inserted?: boolean,
    removed?: boolean,
    updated?: boolean,
    unchanged?: boolean,
    isSection?: boolean,
    isDataModel?: boolean,
  }>,
|};

export type UpdateTreeGenerationChangesetGenerationPayload = {|
  timestamp: number,
  tree_generation_id: string,
  identifier: string,
  type: string,
  changesets: {
    section_key: {
      changesets: {
        id: {
          count: number,
          index: number,
          toIndex?: number,
          type: string,
          render_infos?: Array<String>,
          prev_data?: Array<String>,
          next_data?: Array<String>,
        },
      },
    },
  },
|};

export type UpdateTreeGenerationChangesetApplicationPayload = {|
  changeset: {
    section_key: {
      changesets: {
        id: {
          count: number,
          index: number,
          toIndex?: number,
          type: string,
          render_infos?: Array<String>,
          prev_data?: Array<String>,
          next_data?: Array<String>,
        },
      },
    },
  },
  type: string,
  identifier: string,
  timestamp: number,
  section_component_hierarchy: SectionComponentHierarchy,
  tree_generation_id: string,
  payload: ?Object,
|};

export type TreeGeneration = {|
  ...AddEventPayload,
  ...$Shape<UpdateTreeGenerationHierarchyGenerationPayload>,
  ...$Shape<UpdateTreeGenerationChangesetGenerationPayload>,
  changeSets: Array<UpdateTreeGenerationChangesetApplicationPayload>,
|};