Login endpoint of JWT API.

LoginController.cs

[Route("/api/login")]
[HttpPost]
public async Task<IActionResult> LoginAsync([FromBody] UserCredentialsResource userCredentials)
{
    if (!ModelState.IsValid)
    {
        return BadRequest(ModelState);
    }

    var response = await _authenticationService.CreateAccessTokenAsync(userCredentials.Email, userCredentials.Password);
    if(!response.Success)
    {
        return BadRequest(response.Message);
    }

    var accessTokenResource = _mapper.Map<AccessToken, AccessTokenResource>(response.Token);
    return Ok(accessTokenResource);
}