import { configureStore, Store, AnyAction } from '@reduxjs/toolkit'
import identitySlice, { addIdentity, deleteIdentity, selectIdentities, IdentityState, deleteAllIdentities } from '../../src/reducers/identitySlice'
import { did, did2 } from '../util'

describe('identity slice', () => {
  describe('action creators', () => {
    test('add identity', () => {
      expect(addIdentity({ did })).toEqual({ type: addIdentity.type, payload: { did } })
    })
  })

  describe('selectors', () => {
    test('no identity', () => {
      const state: IdentityState = {
        identities: []
      }

      expect(selectIdentities(state)).toEqual([])
    })

    test('one identity', () => {
      const state: IdentityState = {
        identities: [did]
      }

      expect(selectIdentities(state)).toEqual([did])
    })

    test('two identities', () => {
      const state: IdentityState = {
        identities: [did, did2]
      }

      expect(selectIdentities(state)).toEqual([did, did2])
    })
  })

  describe('reducer', () => {
    let store: Store<IdentityState, AnyAction>

    beforeEach(() => {
      store = configureStore({ reducer: identitySlice })
    })

    test('initial state', () => {
      const identities = selectIdentities(store.getState())

      expect(identities).toEqual([])
    })

    test('add identity', () => {
      store.dispatch(addIdentity({ did }))

      const identities = selectIdentities(store.getState())

      expect(identities).toEqual([did])
    })

    test('add two identities', () => {
      store.dispatch(addIdentity({ did }))
      store.dispatch(addIdentity({ did: did2 }))

      const identities = selectIdentities(store.getState())

      expect(identities).toEqual([did, did2])
    })

    test('delete an identity', () => {
      store.dispatch(addIdentity({ did }))
      store.dispatch(addIdentity({ did: did2 }))

      store.dispatch(deleteIdentity({ did }))

      const identities = selectIdentities(store.getState())
      expect(identities).toEqual([did2])
    })

    test('delete all identities', () => {
      store.dispatch(addIdentity({ did }))
      store.dispatch(addIdentity({ did: did2 }))

      store.dispatch(deleteAllIdentities())

      const identities = selectIdentities(store.getState())
      expect(identities).toEqual([])
    })
  })
})