import { checkTokenExpired } from "../handler"

const mockApiGetToken = async () => {
  return Promise.resolve({
    data: {
      data: {
        access_token:
          "eyJhbGciOiJSUzI1NiIsImtpZCI6InB1YmxpYzo4ZDA1NjJmNS0zMjI0LTQ1OGYtODBkZS01YjczNTdkMWUwMjIiLCJ0eXAiOiJKV1QifQ.eyJhdWQiOltdLCJjbGllbnRfaWQiOiI4MzE5ZGQ4NS03YjU3LTQ0NTUtYThkYy01ZmIxZDE0MmE0MDAiLCJleHAiOjE2NjIzNTk5NDEsImV4dCI6eyJlY29zeXN0ZW1faWQiOiI2MmZjNTcyNC0zNzUxLTQ3OTctYmU3OS02MDU2MzVmYTZjOTMifSwiaWF0IjoxNjYxNzU1MTQxLCJpc3MiOiJodHRwczovL2Rldi1vaWRjLWNvcmUuY3JlZGlmeS5uaW5qYS8iLCJqdGkiOiJkZDI2MDA0My04NjQ4LTQ0YTUtOTZkMC0xMzQ0Y2YzNDhiOWYiLCJuYmYiOjE2NjE3NTUxNDEsInNjcCI6WyJvcmdhbml6YXRpb24iLCJjbGFpbV9wcm92aWRlciIsImlkcGFzc19wcm92aWRlciJdLCJzdWIiOiI4MzE5ZGQ4NS03YjU3LTQ0NTUtYThkYy01ZmIxZDE0MmE0MDAifQ.Tm3qtltNVWi-TVwEbX8i5T_ZQ2qTsVcAOOCEc0JD2PdJd0VwhIPwYs4tZQV62pfRUvqe7Jq-Tui89zj-ms6H8qVfV0CJ1iN8PAhh6JPOwWmcxJcCa_29AgNfW1SO3D-xE7Wq5Nn47pp1vtpe1JiaYWNnfbKT0wuLHCtuR3KNIYXrIIqwoZ4fxniSyb3FxRZlzSixjpJjgbu7VURk4yCof9uzUpM884vH8AxpNUy-JLynp9S9X5-pUyw2unVCW1iBAtlmIlCX3p9fAhAELiCABIZC7tL992x38RhhPEhFuonfZfRp0e0zGRZehQSicscV1mkRmHDbK_pcs4dg2Q78lPB4qQ8P1eh8zSoOmA3rUAWmKWT7Fm38EuABVH682UwhO156WpI9OGmICE0LuAP3NceuL0jTz8R3IFTbwo1puQZ-MHVBzKblJIXpX4mE1YshGBJkKasqMv8UwjO00jLLNdyQGE6RgvcgsAaD6JO3IOBMvow6psX2GO1wwcsGEpg1m6dfqbkYsfsP4CjCybL49hZjUZFcaT7mxlDjhccMXwGWv2Ky0Ggo6ab2clcrUX6u-jiP1Js75NDjppf44_LY-_YMXJXBJ6MrDxYpjK9b_yOwXl75O5QLEJcLLFJgZ2RGB8Tc6p1G4wuHhLBug8xkw07vPUnA4yqkhhMVWNizv6w",
      },
    },
  })
}

class Credify {
  private static _instance: { [apiKey: string]: Credify } = {}
  accessToken: string
  static countCall = 0

  /**
   * Instantiates Credify object
   * @param accessToken
   * */
  constructor(accessToken: string) {
    this.accessToken = accessToken
  }

  static async getInstance(apiKey: string) {
    if (
      Object.prototype.hasOwnProperty.call(this._instance, apiKey) &&
      !checkTokenExpired(this._instance[apiKey].accessToken)
    ) {
      return this._instance[apiKey]
    }
    this.countCall++

    const res = await mockApiGetToken()
    const accessToken = res?.data?.data?.access_token || ""
    this._instance[apiKey] = new Credify(accessToken)

    return this._instance[apiKey]
  }

  static reset() {
    this.countCall = 0
    this._instance = {}
  }
}

// Integration test here to make sure no thing goes wrong with our SDK in a real integrated system and just need to test some happy cases only cause other cases is well tested with our unit tests
const mockApiKey =
  "eyJhbGciOiJSUzI1NiIsImtpZCI6InB1YmxpYzo4ZDA1NjJmNS0zMjI0LTQ1OGYtODBkZS01YjczNTdkMWUwMjIiLCJ0eXAiOiJKV1QifQ.eyJhdWQiOltdLCJjbGllbnRfaWQiOiI4MzE5ZGQ4NS03YjU3LTQ0NTUtYThkYy01ZmIxZDE0MmE0MDAiLCJleHAiOjE2NjIzNTk5NDEsImV4dCI6eyJlY29zeXN0ZW1faWQiOiI2MmZjNTcyNC0zNzUxLTQ3OTctYmU3OS02MDU2MzVmYTZjOTMifSwiaWF0IjoxNjYxNzU1MTQxLCJpc3MiOiJodHRwczovL2Rldi1vaWRjLWNvcmUuY3JlZGlmeS5uaW5qYS8iLCJqdGkiOiJkZDI2MDA0My04NjQ4LTQ0YTUtOTZkMC0xMzQ0Y2YzNDhiOWYiLCJuYmYiOjE2NjE3NTUxNDEsInNjcCI6WyJvcmdhbml6YXRpb24iLCJjbGFpbV9wcm92aWRlciIsImlkcGFzc19wcm92aWRlciJdLCJzdWIiOiI4MzE5ZGQ4NS03YjU3LTQ0NTUtYThkYy01ZmIxZDE0MmE0MDAifQ.Tm3qtltNVWi-TVwEbX8i5T_ZQ2qTsVcAOOCEc0JD2PdJd0VwhIPwYs4tZQV62pfRUvqe7Jq-Tui89zj-ms6H8qVfV0CJ1iN8PAhh6JPOwWmcxJcCa_29AgNfW1SO3D-xE7Wq5Nn47pp1vtpe1JiaYWNnfbKT0wuLHCtuR3KNIYXrIIqwoZ4fxniSyb3FxRZlzSixjpJjgbu7VURk4yCof9uzUpM884vH8AxpNUy-JLynp9S9X5-pUyw2unVCW1iBAtlmIlCX3p9fAhAELiCABIZC7tL992x38RhhPEhFuonfZfRp0e0zGRZehQSicscV1mkRmHDbK_pcs4dg2Q78lPB4qQ8P1eh8zSoOmA3rUAWmKWT7Fm38EuABVH682UwhO156WpI9OGmICE0LuAP3NceuL0jTz8R3IFTbwo1puQZ-MHVBzKblJIXpX4mE1YshGBJkKasqMv8UwjO00jLLNdyQGE6RgvcgsAaD6JO3IOBMvow6psX2GO1wwcsGEpg1m6dfqbkYsfsP4CjCybL49hZjUZFcaT7mxlDjhccMXwGWv2Ky0Ggo6ab2clcrUX6u-jiP1Js75NDjppf44_LY-_YMXJXBJ6MrDxYpjK9b_yOwXl75O5QLEJcLLFJgZ2RGB8Tc6p1G4wuHhLBug8xkw07vPUnA4yqkhhMVWNizv6w"

describe("Credify", () => {
  const expireTimeFromToken = 1662359941

  beforeEach(() => {
    Credify.reset()
  })

  test("Create new instance", async () => {
    const credifyInstance = await Credify.getInstance(mockApiKey)
    expect(Credify.countCall).toEqual(1)
    expect(credifyInstance).toBeTruthy()
  })

  test("Create instance 2 times, same api key, token is not expired", async () => {
    const credifyInstance = await Credify.getInstance(mockApiKey)

    // Mock current time = expireTimeFromToken -> is not expired
    jest.useFakeTimers("modern") // tell Jest to use a different timer implementation.
    const currentTime = new Date(expireTimeFromToken * 1000)
    jest.setSystemTime(currentTime.getTime())

    const credifyInstance1 = await Credify.getInstance(mockApiKey)
    expect(Credify.countCall).toEqual(1)
    expect(credifyInstance).toBeTruthy()
    expect(credifyInstance1).toBeTruthy()
    expect(credifyInstance === credifyInstance1).toEqual(true)
  })

  test("Create instance 2 times, different api key, token is not expired", async () => {
    const credifyInstance = await Credify.getInstance(mockApiKey)

    // Mock current time = expireTimeFromToken -> is not expired
    jest.useFakeTimers("modern") // tell Jest to use a different timer implementation.
    const currentTime = new Date(expireTimeFromToken * 1000)
    jest.setSystemTime(currentTime.getTime())

    const credifyInstance1 = await Credify.getInstance(`${mockApiKey}z`)
    expect(Credify.countCall).toEqual(2)
    expect(credifyInstance).toBeTruthy()
    expect(credifyInstance1).toBeTruthy()
    expect(credifyInstance !== credifyInstance1).toEqual(true)
  })

  test("Create instance 2 times, same api key, token is expired", async () => {
    const credifyInstance = await Credify.getInstance(mockApiKey)

    // Mock current time = expireTimeFromToken - 59 seconds -> is expired
    jest.useFakeTimers("modern") // tell Jest to use a different timer implementation.
    const currentTime = new Date((expireTimeFromToken - 59) * 1000)
    jest.setSystemTime(currentTime.getTime())

    const credifyInstance1 = await Credify.getInstance(mockApiKey)
    expect(Credify.countCall).toEqual(2)
    expect(credifyInstance).toBeTruthy()
    expect(credifyInstance1).toBeTruthy()
    expect(credifyInstance !== credifyInstance1).toEqual(true)
  })
})