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module History.CommitHash
  ( CommitHash (..),
    toShortText,
    toText,
  )
where

import Data.Binary (Binary)
import Data.Text qualified as T
import GHC.Generics (Generic)
import Render qualified as P

data CommitHash
  = WorkingTree
  | Commit T.Text
  deriving (Eq, Show, Binary, Generic)

toShortText :: CommitHash -> T.Text
toShortText WorkingTree = "<dirty>"
toShortText (Commit hash) = T.take 7 hash

toText :: CommitHash -> T.Text
toText WorkingTree = "<dirty>"
toText (Commit hash) = hash

instance P.Render CommitHash where
  render = P.render . P.Detailed

instance P.Render (P.Detailed CommitHash) where
  render (P.Detailed commitHash) =
    P.styled [P.color P.Yellow] $
      P.render (toText commitHash)

instance P.Render (P.Summarized CommitHash) where
  render (P.Summarized commitHash) =
    P.styled [P.color P.Yellow] $
      P.render (toShortText commitHash)