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author | Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com> | 2019-08-27 21:21:26 -0700 |
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committer | Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com> | 2019-08-27 21:21:26 -0700 |
commit | 2d129fffd7278ce292dbb76d7b7ad493811ee22d (patch) | |
tree | a881d4905ae5818a3971d8999374d8e53d8130cf | |
parent | 8d2eae318e541965f031a1acaf88f14234cc2fe8 (diff) |
Handle invalid checksums
-rw-r--r-- | curling.rb | 11 | ||||
-rw-r--r-- | engine.rb | 5 |
2 files changed, 14 insertions, 2 deletions
@@ -61,7 +61,16 @@ To restart the game, run `rm k` to remove the cookie that stores your game state end get '/:command' do |command| - engine = Hex.new cookies.to_h + begin + engine = Hex.new cookies.to_h + rescue InvalidChecksumError + halt 422, <<~MSG + Invalid state, checksum does not match! + If you lost your last valid game state, you'll have to remove your current + cookie and start over. + MSG + end + engine.step command engine.state_h.each_pair do |key, value| cookies[key] = value @@ -1,3 +1,6 @@ +class InvalidChecksumError < StandardError +end + class Engine def initialize hash validate_checksum hash @@ -6,7 +9,7 @@ class Engine def validate_checksum hash if !checksum_valid? hash - throw 'Invalid state, checksum does not match!' + raise InvalidChecksumError end end |