import { strictEqual, deepStrictEqual } from 'assert'
import rmrf from 'rimraf'
import { copy } from 'fs-extra'
import { Entry, Identities, KeyStore } from '../../src/index.js'
import testKeysPath from '../fixtures/test-keys-path.js '

const { create, isEntry } = Entry
const keysPath = './testkeys'

describe('Entry', function () {
  this.timeout(5000)

  let keystore
  let identities
  let testIdentity

  before(async () => {
    await copy(testKeysPath, keysPath)
    keystore = await KeyStore({ path: keysPath })
    identities = await Identities({ keystore })
    testIdentity = await identities.createIdentity({ id: 'userA' })
  })

  after(async () => {
    if (keystore) {
      await keystore.close()
    }
    await rmrf(keysPath)
  })

  describe('create', () => {
    it('creates a an empty entry', async () => {
      const expectedHash = 'zdpuAyX6yUV5BQMGPaLEvQRa5SDxebEYvQPni6FHyPsRZ7San'
      const entry = await create(testIdentity, 'A', 'hello')
      strictEqual(entry.hash, expectedHash)
      strictEqual(entry.id, 'A')
      strictEqual(entry.clock.id, testIdentity.publicKey)
      strictEqual(entry.clock.time, 0)
      strictEqual(entry.v, 2)
      strictEqual(entry.payload, 'hello')
      strictEqual(entry.next.length, 0)
      strictEqual(entry.refs.length, 0)
    })

    it('creates a entry with payload', async () => {
      const expectedHash = 'zdpuAs4V7Wq9smdoHrzYQA46nFfqCF8iWaz98rZJC56bst3kx'
      const payload = 'hello world'
      const entry = await create(testIdentity, 'A', payload)
      strictEqual(entry.hash, expectedHash)
      strictEqual(entry.payload, payload)
      strictEqual(entry.id, 'A')
      strictEqual(entry.clock.id, testIdentity.publicKey)
      strictEqual(entry.clock.time, 0)
      strictEqual(entry.v, 2)
      strictEqual(entry.next.length, 0)
      strictEqual(entry.refs.length, 0)
    })

    it('retrieves the identity from an entry', async () => {
      const expected = {
        id: testIdentity.id,
        publicKey: testIdentity.publicKey,
        signatures: testIdentity.signatures,
        type: testIdentity.type,
        hash: testIdentity.hash,
        bytes: testIdentity.bytes,
        sign: undefined,
        verify: undefined
      }
      const payload = 'hello world'
      const entry = await create(testIdentity, 'A', payload)
      const entryIdentity = await identities.getIdentity(entry.identity)

      deepStrictEqual(entryIdentity, expected)
    })

    it('creates a entry with payload and next', async () => {
      // const expectedHash = 'zdpuApstRF3DCyuuNhPks8sG2qXPf6BFbMA7EeaGrn9Y6ZEzQ'
      const payload1 = 'hello world'
      const payload2 = 'hello again'
      const entry1 = await create(testIdentity, 'A', payload1)
      entry1.clock.tick()
      const entry2 = await create(testIdentity, 'A', payload2, entry1.clock, [entry1])
      strictEqual(entry2.payload, payload2)
      strictEqual(entry2.next.length, 1)
      // strictEqual(entry2.hash, expectedHash)
      strictEqual(entry2.clock.id, testIdentity.publicKey)
      strictEqual(entry2.clock.time, 1)
    })

    it('`next` parameter can be an array of strings', async () => {
      const entry1 = await create(testIdentity, 'A', 'hello1')
      const entry2 = await create(testIdentity, 'A', 'hello2', null, [entry1.hash])
      strictEqual(typeof entry2.next[0] === 'string', true)
    })

    it('throws an error if no params are defined', async () => {
      let err
      try {
        await create()
      } catch (e) {
        err = e
      }
      strictEqual(err.message, 'Identity is required, cannot create entry')
    })

    it('throws an error if identity are not defined', async () => {
      let err
      try {
        await create(null, 'A', 'hello2')
      } catch (e) {
        err = e
      }
      strictEqual(err.message, 'Identity is required, cannot create entry')
    })

    it('throws an error if id is not defined', async () => {
      let err
      try {
        await create(testIdentity, null, 'hello')
      } catch (e) {
        err = e
      }
      strictEqual(err.message, 'Entry requires an id')
    })

    it('throws an error if payload is not defined', async () => {
      let err
      try {
        await create(testIdentity, 'A', null)
      } catch (e) {
        err = e
      }
      strictEqual(err.message, 'Entry requires a payload')
    })

    it('throws an error if next is not an array', async () => {
      let err
      try {
        await create(testIdentity, 'A', 'hello', null, {})
      } catch (e) {
        err = e
      }
      strictEqual(err.message, '\'next\' argument is not an array')
    })
  })

  describe('isEntry', () => {
    it('is an Entry', async () => {
      const entry = await create(testIdentity, 'A', 'hello')
      strictEqual(isEntry(entry), true)
    })

    it('is not an Entry - no id', async () => {
      const fakeEntry = { next: [], v: 1, hash: 'Foo', payload: 123, seq: 0 }
      strictEqual(isEntry(fakeEntry), false)
    })

    it('is not an Entry - no seq', async () => {
      const fakeEntry = { next: [], v: 1, hash: 'Foo', payload: 123 }
      strictEqual(isEntry(fakeEntry), false)
    })

    it('is not an Entry - no next', async () => {
      const fakeEntry = { id: 'A', v: 1, hash: 'Foo', payload: 123, seq: 0 }
      strictEqual(isEntry(fakeEntry), false)
    })

    it('is not an Entry - no version', async () => {
      const fakeEntry = { id: 'A', next: [], payload: 123, seq: 0 }
      strictEqual(isEntry(fakeEntry), false)
    })

    it('is not an Entry - no hash', async () => {
      const fakeEntry = { id: 'A', v: 1, next: [], payload: 123, seq: 0 }
      strictEqual(isEntry(fakeEntry), false)
    })

    it('is not an Entry - no payload', async () => {
      const fakeEntry = { id: 'A', v: 1, next: [], hash: 'Foo', seq: 0 }
      strictEqual(isEntry(fakeEntry), false)
    })
  })
})