import {
  RpcFields,
  RpcStatus,
  RPC_COLLECTION,
  safeCatch,
} from '@pockethost/common'
import { JsonObject } from 'type-fest'
import { MixinContext } from './PbClient'

export enum RecordSubscriptionActions {
  Create = 'create',
  Update = 'update',
  Delete = 'delete',
}

export type RpcHelperConfig = MixinContext

export type RpcHelper = ReturnType<typeof createRpcHelper>

export const createRpcHelper = (config: RpcHelperConfig) => {
  const { client, rawDb } = config
  const onNewRpc = safeCatch(
    `onNewRpc`,
    async (cb: (e: RpcFields<any, any>) => void) => {
      const unsub = await client
        .collection(RPC_COLLECTION)
        .subscribe<RpcFields<any, any>>('*', (e) => {
          if (e.action !== RecordSubscriptionActions.Create) return
          cb(e.record)
        })
      return unsub
    }
  )

  const resetRpcs = safeCatch(`resetRpcs`, async () =>
    rawDb(RPC_COLLECTION)
      .whereNotIn('status', [
        RpcStatus.FinishedError,
        RpcStatus.FinishedSuccess,
      ])
      .update<RpcFields<any, any>>({
        status: RpcStatus.FinishedError,
        result: `Canceled by reset`,
      })
  )

  const incompleteRpcs = safeCatch(`incompleteRpcs`, async () => {
    return client
      .collection(RPC_COLLECTION)
      .getFullList<RpcFields<any, any>>(100, {
        filter: `status != '${RpcStatus.FinishedError}' && status != '${RpcStatus.FinishedSuccess}'`,
      })
  })

  const rejectRpc = safeCatch(
    `rejectRpc`,
    async (rpc: RpcFields<any, any>, err: Error) => {
      const fields: Partial<RpcFields<any, any>> = {
        status: RpcStatus.FinishedError,
        result: `${err}`,
      }
      return client
        .collection(RPC_COLLECTION)
        .update<RpcFields<any, any>>(rpc.id, fields)
    }
  )

  const setRpcStatus = safeCatch(
    `setRpcStatus`,
    async (
      rpc: RpcFields<any, any>,
      status: RpcStatus,
      result: JsonObject = {}
    ) => {
      return client
        .collection(RPC_COLLECTION)
        .update(rpc.id, { status, result })
    }
  )

  return {
    incompleteRpcs,
    resetRpcs,
    onNewRpc,
    rejectRpc,
    setRpcStatus,
  }
}