From 82dbbc0eed18c86aae1a8f1f92a0c98684e63409 Mon Sep 17 00:00:00 2001
From: Ben Sima <ben@bsima.me>
Date: Tue, 26 Jan 2021 19:05:58 -0500
Subject: Create Biz.Log library, extracted from Biz.Bild

---
 Biz/Log.hs | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Biz/Log.hs

(limited to 'Biz/Log.hs')

diff --git a/Biz/Log.hs b/Biz/Log.hs
new file mode 100644
index 0000000..c713946
--- /dev/null
+++ b/Biz/Log.hs
@@ -0,0 +1,44 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE NoImplicitPrelude #-}
+
+module Biz.Log
+  ( Lvl (..),
+    good,
+    pass,
+    info,
+    warn,
+    fail,
+    -- | Low-level
+    msg,
+    br,
+  )
+where
+
+import Alpha hiding (pass)
+import qualified Data.Text as Text
+import Rainbow (chunk, fore, green, putChunk, red, white, yellow)
+
+data Lvl = Good | Pass | Info | Warn | Fail
+
+msg :: Lvl -> [Text] -> IO ()
+msg lvl labels = putChunk <| fore color <| clear <> txt <> "\r"
+  where
+    txt = chunk <| Text.intercalate gap (label : labels)
+    (color, label) = case lvl of
+      Good -> (green, "good")
+      Pass -> (green, "pass")
+      Info -> (white, "info")
+      Warn -> (yellow, "warn")
+      Fail -> (red, "fail")
+    gap = ":  "
+    clear = "\ESC[2K"
+
+br :: IO ()
+br = putChunk "\n"
+
+good, pass, info, warn, fail :: [Text] -> IO ()
+good = msg Good
+pass = msg Pass
+info = msg Info
+warn = msg Warn
+fail = msg Fail
-- 
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