application.cr

# ➜  mapper git:(master) ✗ curl \
# -H 'Authorization: Bot TOKEN' \
# https://discordapp.com/api/oauth2/applications/@me \
# | ./test OAuth2::Application application.cr
#   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
#                                  Dload  Upload   Total   Spent    Left  Speed
# 100   291    0   291    0     0   1625      0 --:--:-- --:--:-- --:--:--  1625
# ➜  mapper git:(master) ✗ cat application.cr
struct OAuth2::Application
  include JSON::Serializable

  @[JSON::Field(key: "description")]
  property description : String # => ""

  @[JSON::Field(key: "name")]
  property name : String # => "Hornet"

  @[JSON::Field(key: "owner")]
  property owner : T # => {"username":"z64","discriminator":"1337","id":"120571255635181568","avatar":"c1abc282b210ab76638d2bc1cf1687b4"}

  @[JSON::Field(key: "bot_public")]
  property bot_public : Bool # => true

  @[JSON::Field(key: "bot_require_code_grant")]
  property bot_require_code_grant : Bool # => false

  @[JSON::Field(key: "id")]
  property id : String # => "213450769276338177"

  @[JSON::Field(key: "icon")]
  property icon : String # => "ce23f72a13c945c38d0e890fd7b17335"
end

user.cr

# ➜  mapper git:(master) ✗ curl \
# -H 'Authorization: Bot TOKEN' \
# https://discordapp.com/api/users/@me \
# | ./test User user.cr
#  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
#                                 Dload  Upload   Total   Spent    Left  Speed
# 100   219    0   219    0     0   1319      0 --:--:-- --:--:-- --:--:--  1319
# ➜  mapper git:(master) ✗ cat user.cr
struct User
  include JSON::Serializable

  @[JSON::Field(key: "username")]
  property username : String # => "Hornet"

  @[JSON::Field(key: "verified")]
  property verified : Bool # => true

  @[JSON::Field(key: "locale")]
  property locale : String # => "en-US"

  @[JSON::Field(key: "mfa_enabled")]
  property mfa_enabled : Bool # => true

  @[JSON::Field(key: "bot")]
  property bot : Bool # => true

  @[JSON::Field(key: "id")]
  property id : String # => "213450769276338177"

  @[JSON::Field(key: "flags")]
  property flags : Int64 # => 0

  @[JSON::Field(key: "avatar")]
  property avatar : String # => "208bcfc90f49915f25ec3808dcfa0f85"

  @[JSON::Field(key: "discriminator")]
  property discriminator : String # => "3729"

  @[JSON::Field(key: "email")]
  property email : Nil # => null
end