import * as core from '@actions/core'
import * as path from 'path'
import * as tar from '../src/internal/tar'
import * as config from '../src/internal/config'
import * as cacheUtils from '../src/internal/cacheUtils'
import * as downloadCacheModule from '../src/internal/blob/download-cache'
import {restoreCache} from '../src/cache'
import {CacheFilename, CompressionMethod} from '../src/internal/constants'
import {CacheServiceClientJSON} from '../src/generated/results/api/v1/cache.twirp'
import {BlobDownloadResponseParsed} from '@azure/storage-blob'
// import {executePromisesSequentially} from '@azure/ms-rest-js'

jest.mock('../src/internal/cacheHttpClient')
jest.mock('../src/internal/cacheUtils')
jest.mock('../src/internal/config')
jest.mock('../src/internal/tar')

beforeAll(() => {
  jest.spyOn(console, 'log').mockImplementation(() => {})
  jest.spyOn(core, 'debug').mockImplementation(() => {})
  jest.spyOn(core, 'info').mockImplementation(() => {})
  jest.spyOn(core, 'warning').mockImplementation(() => {})
  jest.spyOn(core, 'error').mockImplementation(() => {})

  jest.spyOn(cacheUtils, 'getCacheFileName').mockImplementation(cm => {
    const actualUtils = jest.requireActual('../src/internal/cacheUtils')
    return actualUtils.getCacheFileName(cm)
  })

  // Ensure that we're using v2 for these tests
  jest.spyOn(config, 'getCacheServiceVersion').mockReturnValue('v2')
})

test('restore with no path should fail', async () => {
  const paths: string[] = []
  const key = 'node-test'
  await expect(restoreCache(paths, key)).rejects.toThrowError(
    `Path Validation Error: At least one directory or file path is required`
  )
})

test('restore with too many keys should fail', async () => {
  const paths = ['node_modules']
  const key = 'node-test'
  const restoreKeys = [...Array(20).keys()].map(x => x.toString())
  await expect(restoreCache(paths, key, restoreKeys)).rejects.toThrowError(
    `Key Validation Error: Keys are limited to a maximum of 10.`
  )
})

test('restore with large key should fail', async () => {
  const paths = ['node_modules']
  const key = 'foo'.repeat(512) // Over the 512 character limit
  await expect(restoreCache(paths, key)).rejects.toThrowError(
    `Key Validation Error: ${key} cannot be larger than 512 characters.`
  )
})

test('restore with invalid key should fail', async () => {
  const paths = ['node_modules']
  const key = 'comma,comma'
  await expect(restoreCache(paths, key)).rejects.toThrowError(
    `Key Validation Error: ${key} cannot contain commas.`
  )
})

test('restore with no cache found', async () => {
  const paths = ['node_modules']
  const key = 'node-test'

  jest
    .spyOn(CacheServiceClientJSON.prototype, 'GetCacheEntryDownloadURL')
    .mockReturnValue(Promise.resolve({ok: false, signedDownloadUrl: ''}))

  const cacheKey = await restoreCache(paths, key)

  expect(cacheKey).toBe(undefined)
})

test('restore with server error should fail', async () => {
  const paths = ['node_modules']
  const key = 'node-test'
  const logWarningMock = jest.spyOn(core, 'warning')

  jest
    .spyOn(CacheServiceClientJSON.prototype, 'GetCacheEntryDownloadURL')
    .mockImplementation(() => {
      throw new Error('HTTP Error Occurred')
    })

  const cacheKey = await restoreCache(paths, key)
  expect(cacheKey).toBe(undefined)
  expect(logWarningMock).toHaveBeenCalledTimes(1)
  expect(logWarningMock).toHaveBeenCalledWith(
    'Failed to restore: HTTP Error Occurred'
  )
})

test('restore with restore keys and no cache found', async () => {
  const paths = ['node_modules']
  const key = 'node-test'
  const restoreKey = 'node-'
  const logWarningMock = jest.spyOn(core, 'warning')

  jest
    .spyOn(CacheServiceClientJSON.prototype, 'GetCacheEntryDownloadURL')
    .mockReturnValue(Promise.resolve({ok: false, signedDownloadUrl: ''}))

  const cacheKey = await restoreCache(paths, key, [restoreKey])

  expect(cacheKey).toBe(undefined)
  expect(logWarningMock).toHaveBeenCalledWith(
    `Cache not found for keys: ${[key, restoreKey].join(', ')}`
  )
})

test('restore with gzip compressed cache found', async () => {
  const paths = ['node_modules']
  const key = 'node-test'
  const logInfoMock = jest.spyOn(core, 'info')
  const compressionMethod = CompressionMethod.Gzip
  const signedDownloadUrl = 'https://blob-storage.local?signed=true'
  const cacheVersion =
    'd90f107aaeb22920dba0c637a23c37b5bc497b4dfa3b07fe3f79bf88a273c11b'

  const getCacheVersionMock = jest.spyOn(cacheUtils, 'getCacheVersion')
  getCacheVersionMock.mockReturnValue(cacheVersion)

  const compressionMethodMock = jest.spyOn(cacheUtils, 'getCompressionMethod')
  compressionMethodMock.mockReturnValue(Promise.resolve(compressionMethod))

  const getCacheDownloadURLMock = jest.spyOn(
    CacheServiceClientJSON.prototype,
    'GetCacheEntryDownloadURL'
  )
  getCacheDownloadURLMock.mockReturnValue(
    Promise.resolve({ok: true, signedDownloadUrl})
  )

  const tempPath = '/foo/bar'

  const createTempDirectoryMock = jest.spyOn(cacheUtils, 'createTempDirectory')
  createTempDirectoryMock.mockImplementation(async () => {
    return Promise.resolve(tempPath)
  })

  const archivePath = path.join(tempPath, CacheFilename.Gzip)
  const downloadCacheFileMock = jest.spyOn(
    downloadCacheModule,
    'downloadCacheFile'
  )
  downloadCacheFileMock.mockReturnValue(
    Promise.resolve({} as BlobDownloadResponseParsed)
  )

  const fileSize = 142
  const getArchiveFileSizeInBytesMock = jest
    .spyOn(cacheUtils, 'getArchiveFileSizeInBytes')
    .mockReturnValue(fileSize)

  const extractTarMock = jest.spyOn(tar, 'extractTar')
  const unlinkFileMock = jest.spyOn(cacheUtils, 'unlinkFile')

  const cacheKey = await restoreCache(paths, key)

  expect(cacheKey).toBe(key)
  expect(getCacheVersionMock).toHaveBeenCalledWith(
    paths,
    compressionMethod,
    false
  )
  expect(getCacheDownloadURLMock).toHaveBeenCalledWith({
    key,
    restoreKeys: [],
    version: cacheVersion
  })
  expect(createTempDirectoryMock).toHaveBeenCalledTimes(1)
  expect(downloadCacheFileMock).toHaveBeenCalledWith(
    signedDownloadUrl,
    archivePath
  )
  expect(getArchiveFileSizeInBytesMock).toHaveBeenCalledWith(archivePath)
  expect(logInfoMock).toHaveBeenCalledWith(`Cache Size: ~0 MB (142 B)`)

  expect(extractTarMock).toHaveBeenCalledTimes(1)
  expect(extractTarMock).toHaveBeenCalledWith(archivePath, compressionMethod)

  expect(unlinkFileMock).toHaveBeenCalledTimes(1)
  expect(unlinkFileMock).toHaveBeenCalledWith(archivePath)

  expect(compressionMethodMock).toHaveBeenCalledTimes(1)
})

test('restore with zstd compressed cache found', async () => {
  const paths = ['node_modules']
  const key = 'node-test'
  const logInfoMock = jest.spyOn(core, 'info')
  const compressionMethod = CompressionMethod.Zstd
  const signedDownloadUrl = 'https://blob-storage.local?signed=true'
  const cacheVersion =
    '8e2e96a184cb0cd6b48285b176c06a418f3d7fce14c29d9886fd1bb4f05c513d'

  const getCacheVersionMock = jest.spyOn(cacheUtils, 'getCacheVersion')
  getCacheVersionMock.mockReturnValue(cacheVersion)

  const compressionMethodMock = jest.spyOn(cacheUtils, 'getCompressionMethod')
  compressionMethodMock.mockReturnValue(Promise.resolve(compressionMethod))

  const getCacheDownloadURLMock = jest.spyOn(
    CacheServiceClientJSON.prototype,
    'GetCacheEntryDownloadURL'
  )
  getCacheDownloadURLMock.mockReturnValue(
    Promise.resolve({ok: true, signedDownloadUrl})
  )

  const tempPath = '/foo/bar'

  const createTempDirectoryMock = jest.spyOn(cacheUtils, 'createTempDirectory')
  createTempDirectoryMock.mockImplementation(async () => {
    return Promise.resolve(tempPath)
  })

  const archivePath = path.join(tempPath, CacheFilename.Zstd)
  const downloadCacheFileMock = jest.spyOn(
    downloadCacheModule,
    'downloadCacheFile'
  )
  downloadCacheFileMock.mockReturnValue(
    Promise.resolve({} as BlobDownloadResponseParsed)
  )

  const fileSize = 62915000
  const getArchiveFileSizeInBytesMock = jest
    .spyOn(cacheUtils, 'getArchiveFileSizeInBytes')
    .mockReturnValue(fileSize)

  const extractTarMock = jest.spyOn(tar, 'extractTar')
  const unlinkFileMock = jest.spyOn(cacheUtils, 'unlinkFile')

  const cacheKey = await restoreCache(paths, key)

  expect(cacheKey).toBe(key)
  expect(getCacheVersionMock).toHaveBeenCalledWith(
    paths,
    compressionMethod,
    false
  )
  expect(getCacheDownloadURLMock).toHaveBeenCalledWith({
    key,
    restoreKeys: [],
    version: cacheVersion
  })
  expect(createTempDirectoryMock).toHaveBeenCalledTimes(1)
  expect(downloadCacheFileMock).toHaveBeenCalledWith(
    signedDownloadUrl,
    archivePath
  )
  expect(getArchiveFileSizeInBytesMock).toHaveBeenCalledWith(archivePath)
  expect(logInfoMock).toHaveBeenCalledWith(`Cache Size: ~60 MB (62915000 B)`)

  expect(extractTarMock).toHaveBeenCalledTimes(1)
  expect(extractTarMock).toHaveBeenCalledWith(archivePath, compressionMethod)

  expect(unlinkFileMock).toHaveBeenCalledTimes(1)
  expect(unlinkFileMock).toHaveBeenCalledWith(archivePath)

  expect(compressionMethodMock).toHaveBeenCalledTimes(1)
})

// test('restore with cache found for restore key', async () => {
//     const paths = ['node_modules']
//     const key = 'node-test'
//     const restoreKey = 'node-'

//     const infoMock = jest.spyOn(core, 'info')

//     const cacheEntry: ArtifactCacheEntry = {
//         cacheKey: restoreKey,
//         scope: 'refs/heads/main',
//         archiveLocation: 'www.actionscache.test/download'
//     }
//     const getCacheMock = jest.spyOn(cacheHttpClient, 'getCacheEntry')
//     getCacheMock.mockImplementation(async () => {
//         return Promise.resolve(cacheEntry)
//     })
//     const tempPath = '/foo/bar'

//     const createTempDirectoryMock = jest.spyOn(cacheUtils, 'createTempDirectory')
//     createTempDirectoryMock.mockImplementation(async () => {
//         return Promise.resolve(tempPath)
//     })

//     const archivePath = path.join(tempPath, CacheFilename.Zstd)
//     const downloadCacheMock = jest.spyOn(cacheHttpClient, 'downloadCache')

//     const fileSize = 142
//     const getArchiveFileSizeInBytesMock = jest
//         .spyOn(cacheUtils, 'getArchiveFileSizeInBytes')
//         .mockReturnValue(fileSize)

//     const extractTarMock = jest.spyOn(tar, 'extractTar')
//     const compression = CompressionMethod.Zstd
//     const getCompressionMock = jest
//         .spyOn(cacheUtils, 'getCompressionMethod')
//         .mockReturnValue(Promise.resolve(compression))

//     const cacheKey = await restoreCache(paths, key, [restoreKey])

//     expect(cacheKey).toBe(restoreKey)
//     expect(getCacheMock).toHaveBeenCalledWith([key, restoreKey], paths, {
//         compressionMethod: compression,
//         enableCrossOsArchive: false
//     })
//     expect(createTempDirectoryMock).toHaveBeenCalledTimes(1)
//     expect(downloadCacheMock).toHaveBeenCalledWith(
//         cacheEntry.archiveLocation,
//         archivePath,
//         undefined
//     )
//     expect(getArchiveFileSizeInBytesMock).toHaveBeenCalledWith(archivePath)
//     expect(infoMock).toHaveBeenCalledWith(`Cache Size: ~0 MB (142 B)`)

//     expect(extractTarMock).toHaveBeenCalledTimes(1)
//     expect(extractTarMock).toHaveBeenCalledWith(archivePath, compression)
//     expect(getCompressionMock).toHaveBeenCalledTimes(1)
// })

// test('restore with dry run', async () => {
//     const paths = ['node_modules']
//     const key = 'node-test'
//     const options = { lookupOnly: true }

//     const cacheEntry: ArtifactCacheEntry = {
//         cacheKey: key,
//         scope: 'refs/heads/main',
//         archiveLocation: 'www.actionscache.test/download'
//     }
//     const getCacheMock = jest.spyOn(cacheHttpClient, 'getCacheEntry')
//     getCacheMock.mockImplementation(async () => {
//         return Promise.resolve(cacheEntry)
//     })

//     const createTempDirectoryMock = jest.spyOn(cacheUtils, 'createTempDirectory')
//     const downloadCacheMock = jest.spyOn(cacheHttpClient, 'downloadCache')

//     const compression = CompressionMethod.Gzip
//     const getCompressionMock = jest
//         .spyOn(cacheUtils, 'getCompressionMethod')
//         .mockReturnValue(Promise.resolve(compression))

//     const cacheKey = await restoreCache(paths, key, undefined, options)

//     expect(cacheKey).toBe(key)
//     expect(getCompressionMock).toHaveBeenCalledTimes(1)
//     expect(getCacheMock).toHaveBeenCalledWith([key], paths, {
//         compressionMethod: compression,
//         enableCrossOsArchive: false
//     })
//     // creating a tempDir and downloading the cache are skipped
//     expect(createTempDirectoryMock).toHaveBeenCalledTimes(0)
//     expect(downloadCacheMock).toHaveBeenCalledTimes(0)
// })