type WorkerStatusActive @variant {
  # No additional information needed
  _phantom: Int
}

type WorkerStatusLeaving @variant {
  "Related event emitted on leaving initialization"
  workerStartedLeavingEvent: WorkerStartedLeavingEvent!
}

type WorkerStatusLeft @variant {
  "Related event emitted on leaving initialization"
  workerStartedLeavingEvent: WorkerStartedLeavingEvent!

  "Related event emitted once the worker has exited the role (after the unstaking period)"
  workerExitedEvent: WorkerExitedEvent!
}

type WorkerStatusTerminated @variant {
  "Related event emitted on worker termination"
  terminatedWorkerEvent: TerminatedWorkerEvent!
}

union WorkerStatus = WorkerStatusActive | WorkerStatusLeaving | WorkerStatusLeft | WorkerStatusTerminated

# Working Groups
type Worker @entity {
  "Worker id ({workingGroupName}-{workerId})"
  id: ID!

  "WorkerId in specific working group module"
  runtimeId: Int!

  "The group that the worker belongs to"
  group: WorkingGroup!

  # This exposes internal Hydra value related to `group`. It will be internally set and updated by Hydra.
  # See https://github.com/Joystream/joystream/pull/3043 for more info.
  "The id the group that the worker belongs to"
  groupId: ID!

  "Worker membership"
  membership: Membership!

  "Worker's role account"
  roleAccount: String!

  "Worker's reward account"
  rewardAccount: String!

  "Worker's staking account"
  stakeAccount: String!

  "Current worker status"
  status: WorkerStatus!

  "Whether the worker is also the working group lead"
  isLead: Boolean!

  "Whether the worker is currently active"
  isActive: Boolean!

  "Current role stake (in JOY)"
  stake: BigInt!

  "Current reward per block"
  rewardPerBlock: BigInt!

  "The reward amount the worker is currently missing (due to empty working group budget)"
  missingRewardAmount: BigInt

  "All related reward payouts"
  payouts: [RewardPaidEvent!] @derivedFrom(field: "worker")

  "All related stake slashes"
  slashes: [StakeSlashedEvent!] @derivedFrom(field: "worker")

  "The event that caused the worker to be hired"
  entry: OpeningFilledEvent!

  "Related worker entry application"
  application: WorkingGroupApplication!

  "Worker's storage data"
  storage: String

  "Forum categories managed by the worker (required for many-to-many relationship with ForumCategory)"
  managedForumCategories: [ForumCategory!] @derivedFrom(field: "moderators")
}

type WorkingGroupMetadata @entity {
  "Working group status"
  status: String

  "Working group status message"
  statusMessage: String

  "Working group about text"
  about: String

  "Working group description text"
  description: String

  "Event the working group metadata was set in"
  setInEvent: StatusTextChangedEvent!

  "Related group"
  group: WorkingGroup!
}

type WorkingGroup @entity {
  "Working group id (currently === name)"
  id: ID!

  "Working group name"
  name: String! @unique

  "Working group current metadata"
  metadata: WorkingGroupMetadata

  "Current working group leader"
  leader: Worker

  "Workers that currently belong to the group or belonged to the group in the past"
  workers: [Worker!] @derivedFrom(field: "group")

  "All openings related to this group"
  openings: [WorkingGroupOpening!] @derivedFrom(field: "group")

  "Current working group budget (JOY)"
  budget: BigInt!
}

type OpeningStatusCancelled @variant {
  "Related event emitted on opening cancellation"
  openingCanceledEvent: OpeningCanceledEvent!
}

type OpeningStatusOpen @variant {
  # No additional information needed
  _phantom: Int
}

type OpeningStatusFilled @variant {
  "Related event emitted after filling the opening"
  openingFilledEvent: OpeningFilledEvent!
}

union WorkingGroupOpeningStatus = OpeningStatusOpen | OpeningStatusFilled | OpeningStatusCancelled

enum WorkingGroupOpeningType {
  REGULAR
  LEADER
}

type WorkingGroupOpeningMetadata @entity {
  "Whether the originally provided metadata was valid"
  originallyValid: Boolean!

  "Opening title"
  title: String

  "Opening short description"
  shortDescription: String

  "Opening description (md-formatted)"
  description: String

  "Expected max. number of applicants that will be hired"
  hiringLimit: Int

  "Expected time when the opening will close"
  expectedEnding: DateTime

  "Md-formatted text explaining the application process"
  applicationDetails: String

  "List of questions that should be answered during application"
  applicationFormQuestions: [ApplicationFormQuestion!] @derivedFrom(field: "openingMetadata")
}

type WorkingGroupOpening @entity {
  "Opening id ({workingGroupName}-{openingId})"
  id: ID!

  "OpeningId in specific working group module"
  runtimeId: Int!

  "Related working group"
  group: WorkingGroup!

  "List of opening applications"
  applications: [WorkingGroupApplication!] @derivedFrom(field: "opening")

  "Type of the opening (Leader/Regular)"
  type: WorkingGroupOpeningType!

  "Current opening status"
  status: WorkingGroupOpeningStatus!

  "Opening metadata"
  metadata: WorkingGroupOpeningMetadata!

  "Min. application/role stake amount"
  stakeAmount: BigInt!

  "Role stake unstaking period in blocks"
  unstakingPeriod: Int!

  "Initial workers' reward per block"
  rewardPerBlock: BigInt!

  "Event the opening was created in"
  createdInEvent: OpeningAddedEvent! @derivedFrom(field: "opening")

  "Time of opening creation"
  createdAt: DateTime!
}

type UpcomingWorkingGroupOpening @entity {
  "Event the upcoming opening was created in"
  createdInEvent: StatusTextChangedEvent!

  "Related working group"
  group: WorkingGroup!

  "Expected opening start time"
  expectedStart: DateTime

  "Expected min. application/role stake amount"
  stakeAmount: BigInt

  "Expected reward per block"
  rewardPerBlock: BigInt

  "Opening metadata"
  metadata: WorkingGroupOpeningMetadata!
}

type ApplicationStatusPending @variant {
  # No additional information needed
  _phantom: Int
}

type ApplicationStatusAccepted @variant {
  "Related OpeningFilled event"
  openingFilledEvent: OpeningFilledEvent!
}

type ApplicationStatusRejected @variant {
  "Related OpeningFilled event"
  openingFilledEvent: OpeningFilledEvent!
}

type ApplicationStatusCancelled @variant {
  "Related OpeningCanceled event"
  openingCanceledEvent: OpeningCanceledEvent!
}

type ApplicationStatusWithdrawn @variant {
  "Related ApplicationWithdrawn event"
  applicationWithdrawnEvent: ApplicationWithdrawnEvent!
}

union WorkingGroupApplicationStatus =
    ApplicationStatusPending
  | ApplicationStatusAccepted
  | ApplicationStatusRejected
  | ApplicationStatusWithdrawn
  | ApplicationStatusCancelled

type WorkingGroupApplication @entity {
  "Application id ({workingGroupName}-{applicationId})"
  id: ID!

  "ApplicationId in specific working group module"
  runtimeId: Int!

  "Related working group opening"
  opening: WorkingGroupOpening!

  "Applicant's membership"
  applicant: Membership!

  "Application stake"
  stake: BigInt!

  "Applicant's initial role account"
  roleAccount: String!

  "Applicant's initial reward account"
  rewardAccount: String!

  "Applicant's initial staking account"
  stakingAccount: String!

  "Answers to application form questions"
  answers: [ApplicationFormQuestionAnswer!] @derivedFrom(field: "application")

  "Current application status"
  status: WorkingGroupApplicationStatus!

  "Event the application was created in"
  createdInEvent: AppliedOnOpeningEvent! @derivedFrom(field: "application")
}

type ApplicationFormQuestionAnswer @entity {
  "Related application"
  application: WorkingGroupApplication!

  "The question beeing answered"
  question: ApplicationFormQuestion!

  "Applicant's answer"
  answer: String!
}

enum ApplicationFormQuestionType {
  TEXT
  TEXTAREA
}

type ApplicationFormQuestion @entity {
  "Related opening metadata"
  openingMetadata: WorkingGroupOpeningMetadata!

  "The question itself"
  question: String

  "Type of the question (UI answer input type)"
  type: ApplicationFormQuestionType!

  "Index of the question"
  index: Int!
}