import { saveActivity } from '@/modules/activitystream/services'
import { ActionTypes, ResourceTypes } from '@/modules/activitystream/helpers/types'
import { StreamRoles } from '@/modules/core/helpers/mainConstants'
import {
  pubsub,
  StreamSubscriptions as StreamPubsubEvents
} from '@/modules/shared/utils/subscriptions'
import { StreamCreateInput } from '@/test/graphql/generated/graphql'
import { Knex } from 'knex'
import { getStreamCollaborators } from '@/modules/core/repositories/streams'
import { chunk, flatten } from 'lodash'
import { StreamRecord } from '@/modules/core/helpers/types'
import {
  ProjectCreateInput,
  ProjectUpdatedMessageType,
  ProjectUpdateInput,
  StreamUpdateInput,
  UserProjectsUpdatedMessageType
} from '@/modules/core/graph/generated/graphql'
import {
  ProjectSubscriptions,
  publish,
  UserSubscriptions
} from '@/modules/shared/utils/subscriptions'

/**
 * Save "stream updated" activity
 */
export async function addStreamUpdatedActivity(params: {
  streamId: string
  updaterId: string
  oldStream: StreamRecord
  newStream: StreamRecord
  update: ProjectUpdateInput | StreamUpdateInput
}) {
  const { streamId, updaterId, oldStream, update, newStream } = params

  await Promise.all([
    saveActivity({
      streamId,
      resourceType: ResourceTypes.Stream,
      resourceId: streamId,
      actionType: ActionTypes.Stream.Update,
      userId: updaterId,
      info: { old: oldStream, new: update },
      message: 'Stream metadata changed'
    }),
    pubsub.publish(StreamPubsubEvents.StreamUpdated, {
      streamUpdated: {
        ...update
      },
      id: streamId
    }),
    publish(ProjectSubscriptions.ProjectUpdated, {
      projectUpdated: {
        id: streamId,
        type: ProjectUpdatedMessageType.Updated,
        project: newStream
      }
    })
  ])
}

/**
 * Save "stream deleted" activity
 */
export async function addStreamDeletedActivity(params: {
  streamId: string
  deleterId: string
}) {
  const { streamId, deleterId } = params

  // Notify any listeners on streamId
  await Promise.all([
    pubsub.publish(StreamPubsubEvents.StreamDeleted, {
      streamDeleted: { streamId },
      streamId
    }),
    publish(ProjectSubscriptions.ProjectUpdated, {
      projectUpdated: {
        id: streamId,
        type: ProjectUpdatedMessageType.Deleted,
        project: null
      }
    })
  ])

  // Notify all stream users
  const users = await getStreamCollaborators(streamId)
  const userBatches = chunk(users, 15)
  for (const userBatch of userBatches) {
    await Promise.all(
      flatten(
        userBatch.map((u) => [
          pubsub.publish(StreamPubsubEvents.UserStreamRemoved, {
            userStreamRemoved: { id: streamId },
            ownerId: u.id
          }),
          publish(UserSubscriptions.UserProjectsUpdated, {
            userProjectsUpdated: {
              id: streamId,
              type: UserProjectsUpdatedMessageType.Removed,
              project: null
            },
            ownerId: u.id
          })
        ])
      )
    )
  }

  await saveActivity({
    streamId,
    resourceType: ResourceTypes.Stream,
    resourceId: streamId,
    actionType: ActionTypes.Stream.Delete,
    userId: deleterId,
    info: {},
    message: `Stream deleted`
  })
}

/**
 * Save "user cloned stream X" activity item
 */
export async function addStreamClonedActivity(
  params: {
    sourceStreamId: string
    newStream: StreamRecord
    clonerId: string
  },
  options?: Partial<{ trx: Knex.Transaction }>
) {
  const { trx } = options || {}
  const { sourceStreamId, newStream, clonerId } = params
  const newStreamId = newStream.id

  const publishSubscriptions = async () =>
    publish(UserSubscriptions.UserProjectsUpdated, {
      userProjectsUpdated: {
        id: newStreamId,
        type: UserProjectsUpdatedMessageType.Added,
        project: newStream
      },
      ownerId: clonerId
    })

  await Promise.all([
    saveActivity(
      {
        streamId: newStreamId,
        resourceType: ResourceTypes.Stream,
        resourceId: newStreamId,
        actionType: ActionTypes.Stream.Clone,
        userId: clonerId,
        info: { sourceStreamId, newStreamId, clonerId },
        message: `User ${clonerId} cloned stream ${sourceStreamId} as ${newStreamId}`
      },
      { trx }
    ),
    !trx ? publishSubscriptions() : null
  ])

  if (trx) {
    // can't await this, cause it'll block everything
    void trx.executionPromise.then(publishSubscriptions)
  }
}

/**
 * Save "user created stream" activity item
 */
export async function addStreamCreatedActivity(params: {
  streamId: string
  creatorId: string
  input: StreamCreateInput | ProjectCreateInput
  stream: StreamRecord
}) {
  const { streamId, creatorId, input, stream } = params

  await Promise.all([
    saveActivity({
      streamId,
      resourceType: ResourceTypes.Stream,
      resourceId: streamId,
      actionType: ActionTypes.Stream.Create,
      userId: creatorId,
      info: { input },
      message: `Stream ${input.name} created`
    }),
    pubsub.publish(StreamPubsubEvents.UserStreamAdded, {
      userStreamAdded: { id: streamId, ...input },
      ownerId: creatorId
    }),
    publish(UserSubscriptions.UserProjectsUpdated, {
      userProjectsUpdated: {
        id: streamId,
        type: UserProjectsUpdatedMessageType.Added,
        project: stream
      },
      ownerId: creatorId
    })
  ])
}

/**
 * Save "stream permissions granted to user" activity item
 */
export async function addStreamPermissionsAddedActivity(params: {
  streamId: string
  activityUserId: string
  targetUserId: string
  role: StreamRoles
  stream: StreamRecord
}) {
  const { streamId, activityUserId, targetUserId, role, stream } = params
  await Promise.all([
    saveActivity({
      streamId,
      resourceType: ResourceTypes.Stream,
      resourceId: streamId,
      actionType: ActionTypes.Stream.PermissionsAdd,
      userId: activityUserId,
      info: { targetUser: targetUserId, role },
      message: `Permission granted to user ${targetUserId} (${role})`
    }),
    pubsub.publish(StreamPubsubEvents.UserStreamAdded, {
      userStreamAdded: {
        id: streamId,
        sharedBy: activityUserId
      },
      ownerId: targetUserId
    }),
    publish(UserSubscriptions.UserProjectsUpdated, {
      userProjectsUpdated: {
        id: streamId,
        type: UserProjectsUpdatedMessageType.Added,
        project: stream
      },
      ownerId: targetUserId
    }),
    publish(ProjectSubscriptions.ProjectUpdated, {
      projectUpdated: {
        id: streamId,
        type: ProjectUpdatedMessageType.Updated,
        project: stream
      }
    })
  ])
}

/**
 * Save "user accepted stream invite" activity item
 */
export async function addStreamInviteAcceptedActivity(params: {
  streamId: string
  inviteTargetId: string
  inviterId: string
  role: StreamRoles
  stream: StreamRecord
}) {
  const { streamId, inviteTargetId, inviterId, role, stream } = params
  await Promise.all([
    saveActivity({
      streamId,
      resourceType: ResourceTypes.Stream,
      resourceId: streamId,
      actionType: ActionTypes.Stream.InviteAccepted,
      userId: inviteTargetId,
      info: { inviterUser: inviterId, role },
      message: `User ${inviteTargetId} has accepted an invitation to become a ${role}`
    }),
    pubsub.publish(StreamPubsubEvents.UserStreamAdded, {
      userStreamAdded: {
        id: streamId,
        sharedBy: inviterId
      },
      ownerId: inviteTargetId
    }),
    publish(UserSubscriptions.UserProjectsUpdated, {
      userProjectsUpdated: {
        id: streamId,
        type: UserProjectsUpdatedMessageType.Added,
        project: stream
      },
      ownerId: inviteTargetId
    }),
    publish(ProjectSubscriptions.ProjectUpdated, {
      projectUpdated: {
        id: streamId,
        type: ProjectUpdatedMessageType.Updated,
        project: stream
      }
    })
  ])
}

/**
 * Save "stream permissions revoked for user" activity item
 */
export async function addStreamPermissionsRevokedActivity(params: {
  streamId: string
  activityUserId: string
  removedUserId: string
  stream: StreamRecord
}) {
  const { streamId, activityUserId, removedUserId, stream } = params
  const isVoluntaryLeave = activityUserId === removedUserId

  await Promise.all([
    saveActivity({
      streamId,
      resourceType: ResourceTypes.Stream,
      resourceId: streamId,
      actionType: ActionTypes.Stream.PermissionsRemove,
      userId: activityUserId,
      info: { targetUser: removedUserId },
      message: isVoluntaryLeave
        ? `User ${removedUserId} left the stream`
        : `Permission revoked for user ${removedUserId}`
    }),
    pubsub.publish(StreamPubsubEvents.UserStreamRemoved, {
      userStreamRemoved: {
        id: streamId,
        revokedBy: activityUserId
      },
      ownerId: removedUserId
    }),
    publish(UserSubscriptions.UserProjectsUpdated, {
      userProjectsUpdated: {
        id: streamId,
        type: UserProjectsUpdatedMessageType.Removed,
        project: null
      },
      ownerId: removedUserId
    }),
    publish(ProjectSubscriptions.ProjectUpdated, {
      projectUpdated: {
        id: streamId,
        type: ProjectUpdatedMessageType.Updated,
        project: stream
      }
    })
  ])
}

/**
 * Save "user invited another user to stream" activity item
 */
export async function addStreamInviteSentOutActivity(params: {
  streamId: string
  inviteTargetId: string
  inviterId: string
  inviteTargetEmail: string
  stream: StreamRecord
}) {
  const { streamId, inviteTargetId, inviterId, inviteTargetEmail, stream } = params
  const targetDisplay = inviteTargetId || inviteTargetEmail

  await Promise.all([
    saveActivity({
      streamId,
      resourceType: ResourceTypes.Stream,
      resourceId: streamId,
      actionType: ActionTypes.Stream.InviteSent,
      userId: inviterId,
      message: `User ${inviterId} has invited ${targetDisplay} to stream ${streamId}`,
      info: { targetId: inviteTargetId || null, targetEmail: inviteTargetEmail || null }
    }),
    publish(ProjectSubscriptions.ProjectUpdated, {
      projectUpdated: {
        id: streamId,
        type: ProjectUpdatedMessageType.Updated,
        project: stream
      }
    })
  ])
}

/**
 * Save "user declined an invite" activity item
 */
export async function addStreamInviteDeclinedActivity(params: {
  streamId: string
  inviteTargetId: string
  inviterId: string
  stream: StreamRecord
}) {
  const { streamId, inviteTargetId, inviterId, stream } = params
  await Promise.all([
    saveActivity({
      streamId,
      resourceType: ResourceTypes.Stream,
      resourceId: streamId,
      actionType: ActionTypes.Stream.InviteDeclined,
      userId: inviteTargetId,
      message: `User ${inviteTargetId} declined to join the stream ${streamId}`,
      info: { targetId: inviteTargetId, inviterId }
    }),
    publish(ProjectSubscriptions.ProjectUpdated, {
      projectUpdated: {
        id: streamId,
        type: ProjectUpdatedMessageType.Updated,
        project: stream
      }
    })
  ])
}

/**
 * Save "user mentioned in stream comment" activity item
 */
export async function addStreamCommentMentionActivity(params: {
  streamId: string
  mentionAuthorId: string
  mentionTargetId: string
  commentId: string
  threadId: string
}) {
  const { streamId, mentionAuthorId, mentionTargetId, commentId, threadId } = params
  await saveActivity({
    streamId,
    resourceType: ResourceTypes.Comment,
    resourceId: commentId,
    actionType: ActionTypes.Comment.Mention,
    userId: mentionAuthorId,
    message: `User ${mentionAuthorId} mentioned user ${mentionTargetId} in comment ${commentId}`,
    info: {
      mentionAuthorId,
      mentionTargetId,
      commentId,
      threadId
    }
  })
}