callback_action.ex

  def callback(%{assigns: %{ueberauth_auth: auth}} = conn, _params) do
    {:ok, user} = Account.fb_auth(auth.uid, auth.info)

    Streaming.find_or_create_channel(user)

    conn
    |> Guardian.Plug.sign_in(user)
    |> put_flash(:success, "Signed In!")
    |> redirect(to: "/")
  end

conn.ex

%Plug.Conn{
  adapter: {Plug.Adapters.Cowboy.Conn, :...},
  assigns: %{
    ueberauth_auth: %Ueberauth.Auth{
      credentials: %Ueberauth.Auth.Credentials{
        expires: true,
        expires_at: 1542524139,
        other: %{},
        refresh_token: nil,
        scopes: [""],
        secret: nil,
        token: "EAADX4RQ5rh0BAN7eQta0sdRKlia3ZBBAdZAprCiDJ3KMmusIXAkWpZB16HTUEG9lJPNYdoYkKcuyLvORZBKufxJQ0FQLQlw3LfGaZC5EOFXa00MJmUWvX35nWmQ8h6I8Vvk9lp240npJgwNcsZAN4CjsWD3hDLZC2sZD",
        token_type: nil
      },
      extra: %Ueberauth.Auth.Extra{
        raw_info: %{
          token: %OAuth2.AccessToken{
            access_token: "EAADX4RQ5rh0BAN7eQta0sdRKlia3ZBBAdZAprCiDJ3KMmusIXAkWpZB16HTUEG9lJPNYdoYkKcuyLvORZBKufxJQ0FQLQlw3LfGaZC5EOFXa00MJmUWvX35nWmQ8h6I8Vvk9lp240npJgwNcsZAN4CjsWD3hDLZC2sZD",
            expires_at: 1542524139,
            other_params: %{},
            refresh_token: nil,
            token_type: "Bearer"
          },
          user: %{
            "email" => "poverwhelming@gmail.com",
            "first_name" => "Mickey",
            "id" => "10162460050215206",
            "last_name" => "Chen",
            "name" => "Mickey Chen"
          }
        }
      },
      info: %Ueberauth.Auth.Info{
        description: nil,
        email: "poverwhelming@gmail.com",
        first_name: "Mickey",
        image: "http://graph.facebook.com/10162460050215206/picture?type=square",
        last_name: "Chen",
        location: nil,
        name: "Mickey Chen",
        nickname: nil,
        phone: nil,
        urls: %{facebook: nil, website: nil}
      },
      provider: :facebook,
      strategy: Ueberauth.Strategy.Facebook,
      uid: "10162460050215206"
    }
  },
  before_send: [#Function<0.58048372/1 in Plug.CSRFProtection.call/2>,
   #Function<4.97370520/1 in Phoenix.Controller.fetch_flash/2>,
   #Function<0.45862765/1 in Plug.Session.before_send/2>,
   #Function<1.6439883/1 in Plug.Logger.call/2>],
  body_params: %{},
  cookies: %{
    "_blog_key" => "SFMyNTY.g3QAAAABbQAAAAtfY3NyZl90b2tlbm0AAAAYT1A0V2h5NDNPc0FHR1VZR2djRTBodz09.NtHEJxlJFxkLnCZ9NsO7B_XMXliWM3E-htyv4-GT_Ck",
    "_cobweb_session" => "Umk5MTZsWDRBdVZDQ3ZCUEJuaDBsN0diWDRwN1hSdUJQRjVCWEhLT01OM3YyTWVUV3JYTDhRYnk4VjhjNWkyY0FqZnZ2MFZmZy80cG1lVmhoYlhaMysvSDdMRXNUSy9XZU9XY2NONXRTdDlKN1JkS3dteWFYZkdMZDl5amRoZW1CQm9mTFFJbWtCOGI3NkFMQjZYZUtvdkFNVU9YZ1BtZzMzYTUxcU1wMDVWcFcwWGpoZ2dMVmJjbGd5aFhUZ1llNlZwZEdoQ25lVTdhNE1USEJUdUptVGlnRVdwMHdkd0dhbW9lZjNxVFkyWT0tLWVkOFp4N05YMjQ4dGlEcXk0RVhIU2c9PQ%3D%3D--c9d0b10b2916643133c4f5921c7ca3b21fc8e043",
    "_ex_cowork_key" => "SFMyNTY.g3QAAAABbQAAAAtfY3NyZl90b2tlbm0AAAAYWTArOFNjYysyVVZDSk5GdW5Jem5HUT09.bDUkdF8QRHthrXDTdM2Zeqr5NFOGmnThROYJ7iBgtbU",
    "_ga" => "GA1.1.559981371.1510675511",
    "_live_auction_key" => "SFMyNTY.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.U8vdoM64DDQW22LtQuO-0mFBeHDOqw265LX3IAf1PlM",
    "_zazaar_key" => "SFMyNTY.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.FctwxbcGyuqBO2fPM6OyGuO7t4a1aKvD8KxPfyd7oNQ",
    "io" => "hKJOmwLZPn44-secAAAA"
  },
  halted: false,
  host: "localhost",
  method: "GET",
  owner: #PID<0.629.0>,
  params: %{
    "code" => "AQAyraxlnte0lvHmPjwAEx-bZs_E92FmZ-luMj-tak40QB7k0HFVAE5qsGE7H3KJhKKoSCjQlMMPTgpO6ToAsRyfCEjwhwO1TLAuUE7w-W9gT_aBJF1zZE3JxmSn5ExEye4F-KoAx4-zPV3NDBuDP_MTGeUhGjMsThZA4OJCUYUyTeo25bpBlflcYwGSleOm7rEkQVniJw1iTz-symbNrE45hMCefpUQQZOZOlIs-6ICE3hix5f8C4rp4zkq6bLSiWBBPqEUZoCSLuigPO0g-zS_-GovR-yuRTXQgvYw3swukksmE5KAmq2wk86qLngU9UZlQYAodhSCDi5FPOPteJUEf-t5WGxXsSxpkARh4hJyDg",
    "provider" => "facebook"
  },
  path_info: ["auth", "facebook", "callback"],
  path_params: %{"provider" => "facebook"},
  peer: {{0, 0, 0, 0, 0, 0, 0, 1}, 50252},
  port: 4000,
  private: %{
    ZaZaarWeb.Router => {[], %{}},
    :facebook_token => nil,
    :facebook_user => nil,
    :guardian_error_handler => ZaZaar.Auth.ErrorHandler,
    :guardian_module => ZaZaar.Auth.Guardian,
    :phoenix_action => :callback,
    :phoenix_controller => ZaZaarWeb.SessionController,
    :phoenix_endpoint => ZaZaarWeb.Endpoint,
    :phoenix_flash => %{},
    :phoenix_format => "html",
    :phoenix_layout => {ZaZaarWeb.LayoutView, :app},
    :phoenix_pipelines => [:browser],
    :phoenix_router => ZaZaarWeb.Router,
    :phoenix_view => ZaZaarWeb.SessionView,
    :plug_session => %{},
    :plug_session_fetch => :done,
    :ueberauth_request_options => %{
      callback_methods: ["GET"],
      callback_params: nil,
      callback_path: "/auth/facebook/callback",
      callback_url: nil,
      options: [
        profile_fields: "name,email,first_name,last_name",
        display: "popup"
      ],
      request_path: "/auth/facebook",
      strategy: Ueberauth.Strategy.Facebook,
      strategy_name: :facebook
    }
  },
  query_params: %{
    "code" => "AQAyraxlnte0lvHmPjwAEx-bZs_E92FmZ-luMj-tak40QB7k0HFVAE5qsGE7H3KJhKKoSCjQlMMPTgpO6ToAsRyfCEjwhwO1TLAuUE7w-W9gT_aBJF1zZE3JxmSn5ExEye4F-KoAx4-zPV3NDBuDP_MTGeUhGjMsThZA4OJCUYUyTeo25bpBlflcYwGSleOm7rEkQVniJw1iTz-symbNrE45hMCefpUQQZOZOlIs-6ICE3hix5f8C4rp4zkq6bLSiWBBPqEUZoCSLuigPO0g-zS_-GovR-yuRTXQgvYw3swukksmE5KAmq2wk86qLngU9UZlQYAodhSCDi5FPOPteJUEf-t5WGxXsSxpkARh4hJyDg"
  },
  query_string: "code=AQAyraxlnte0lvHmPjwAEx-bZs_E92FmZ-luMj-tak40QB7k0HFVAE5qsGE7H3KJhKKoSCjQlMMPTgpO6ToAsRyfCEjwhwO1TLAuUE7w-W9gT_aBJF1zZE3JxmSn5ExEye4F-KoAx4-zPV3NDBuDP_MTGeUhGjMsThZA4OJCUYUyTeo25bpBlflcYwGSleOm7rEkQVniJw1iTz-symbNrE45hMCefpUQQZOZOlIs-6ICE3hix5f8C4rp4zkq6bLSiWBBPqEUZoCSLuigPO0g-zS_-GovR-yuRTXQgvYw3swukksmE5KAmq2wk86qLngU9UZlQYAodhSCDi5FPOPteJUEf-t5WGxXsSxpkARh4hJyDg",
  remote_ip: {0, 0, 0, 0, 0, 0, 0, 1},
  req_cookies: %{
    "_blog_key" => "SFMyNTY.g3QAAAABbQAAAAtfY3NyZl90b2tlbm0AAAAYT1A0V2h5NDNPc0FHR1VZR2djRTBodz09.NtHEJxlJFxkLnCZ9NsO7B_XMXliWM3E-htyv4-GT_Ck",
    "_cobweb_session" => "Umk5MTZsWDRBdVZDQ3ZCUEJuaDBsN0diWDRwN1hSdUJQRjVCWEhLT01OM3YyTWVUV3JYTDhRYnk4VjhjNWkyY0FqZnZ2MFZmZy80cG1lVmhoYlhaMysvSDdMRXNUSy9XZU9XY2NONXRTdDlKN1JkS3dteWFYZkdMZDl5amRoZW1CQm9mTFFJbWtCOGI3NkFMQjZYZUtvdkFNVU9YZ1BtZzMzYTUxcU1wMDVWcFcwWGpoZ2dMVmJjbGd5aFhUZ1llNlZwZEdoQ25lVTdhNE1USEJUdUptVGlnRVdwMHdkd0dhbW9lZjNxVFkyWT0tLWVkOFp4N05YMjQ4dGlEcXk0RVhIU2c9PQ%3D%3D--c9d0b10b2916643133c4f5921c7ca3b21fc8e043",
    "_ex_cowork_key" => "SFMyNTY.g3QAAAABbQAAAAtfY3NyZl90b2tlbm0AAAAYWTArOFNjYysyVVZDSk5GdW5Jem5HUT09.bDUkdF8QRHthrXDTdM2Zeqr5NFOGmnThROYJ7iBgtbU",
    "_ga" => "GA1.1.559981371.1510675511",
    "_live_auction_key" => "SFMyNTY.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.U8vdoM64DDQW22LtQuO-0mFBeHDOqw265LX3IAf1PlM",
    "_zazaar_key" => "SFMyNTY.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.FctwxbcGyuqBO2fPM6OyGuO7t4a1aKvD8KxPfyd7oNQ",
    "io" => "hKJOmwLZPn44-secAAAA"
  },
  req_headers: [
    {"host", "localhost:4000"},
    {"connection", "keep-alive"},
    {"upgrade-insecure-requests", "1"},
    {"user-agent",
     "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36"},
    {"accept",
     "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"},
    {"referer", "http://localhost:4000/"},
    {"accept-encoding", "gzip, deflate, br"},
    {"accept-language", "zh-TW,zh;q=0.9,en-US;q=0.8,en;q=0.7"},
    {"cookie",
     "_ga=GA1.1.559981371.1510675511; _ex_cowork_key=SFMyNTY.g3QAAAABbQAAAAtfY3NyZl90b2tlbm0AAAAYWTArOFNjYysyVVZDSk5GdW5Jem5HUT09.bDUkdF8QRHthrXDTdM2Zeqr5NFOGmnThROYJ7iBgtbU; _blog_key=SFMyNTY.g3QAAAABbQAAAAtfY3NyZl90b2tlbm0AAAAYT1A0V2h5NDNPc0FHR1VZR2djRTBodz09.NtHEJxlJFxkLnCZ9NsO7B_XMXliWM3E-htyv4-GT_Ck; _live_auction_key=SFMyNTY.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.U8vdoM64DDQW22LtQuO-0mFBeHDOqw265LX3IAf1PlM; _cobweb_session=Umk5MTZsWDRBdVZDQ3ZCUEJuaDBsN0diWDRwN1hSdUJQRjVCWEhLT01OM3YyTWVUV3JYTDhRYnk4VjhjNWkyY0FqZnZ2MFZmZy80cG1lVmhoYlhaMysvSDdMRXNUSy9XZU9XY2NONXRTdDlKN1JkS3dteWFYZkdMZDl5amRoZW1CQm9mTFFJbWtCOGI3NkFMQjZYZUtvdkFNVU9YZ1BtZzMzYTUxcU1wMDVWcFcwWGpoZ2dMVmJjbGd5aFhUZ1llNlZwZEdoQ25lVTdhNE1USEJUdUptVGlnRVdwMHdkd0dhbW9lZjNxVFkyWT0tLWVkOFp4N05YMjQ4dGlEcXk0RVhIU2c9PQ%3D%3D--c9d0b10b2916643133c4f5921c7ca3b21fc8e043; io=hKJOmwLZPn44-secAAAA; _zazaar_key=SFMyNTY.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.FctwxbcGyuqBO2fPM6OyGuO7t4a1aKvD8KxPfyd7oNQ"}
  ],
  request_path: "/auth/facebook/callback",
  resp_body: nil,
  resp_cookies: %{},
  resp_headers: [
    {"cache-control", "max-age=0, private, must-revalidate"},
    {"x-request-id", "2las8n7spd9h8pbmjc000534"},
    {"x-frame-options", "SAMEORIGIN"},
    {"x-xss-protection", "1; mode=block"},
    {"x-content-type-options", "nosniff"},
    {"x-download-options", "noopen"},
    {"x-permitted-cross-domain-policies", "none"}
  ],
  scheme: :http,
  script_name: [],
  secret_key_base: "sNCVTGAG6JAoto+aKFFozLbuPsXjvdUdeCcexJDNq9VfEvGhgNAzwlk96SxEz6dL",
  state: :unset,
  status: nil
}

user.ex

%ZaZaar.Account.User{
  __meta__: #Ecto.Schema.Metadata<:loaded, "users">,
  email: "poverwhelming@gmail.com",
  encrypted_password: "$argon2i$v=19$m=65536,t=6,p=1$0udmKEAu/PkO93RVW0Kg3A$CYzRufJwalB0nce7OH8NZCKFSdF/0f7+HWipuHkyEDY",
  fb_id: "10162460050215206",
  fb_payload: %{
    "description" => nil,
    "email" => "poverwhelming@gmail.com",
    "first_name" => "Mickey",
    "image" => "http://graph.facebook.com/10162469950215206/picture?type=square",
    "last_name" => "Chen",
    "location" => nil,
    "name" => "Mickey Chen",
    "nickname" => nil,
    "phone" => nil,
    "urls" => %{"facebook" => nil, "website" => nil}
  },
  id: "6010b436-0897-4d0f-a712-baa4a350ac84",
  image_url: "http://graph.facebook.com/10162460050215206/picture?type=square",
  inserted_at: ~N[2018-09-19 09:24:15.228446],
  name: "Mickey Chen",
  password: nil,
  refresh_token: nil,
  tier: :viewer,
  updated_at: ~N[2018-09-19 09:24:15.236275]
}