From 0c677070edf9978cb85a0b521f7e6e0ef6d6b491 Mon Sep 17 00:00:00 2001
From: Chris Wells <chris@mathematicaster.org>
Date: Mon, 10 Feb 2025 12:48:38 -0600
Subject: A lot of work on aliases and the like

---
 src/Hakyll/Aeson.hs      | 42 ++++++++++++++++++++++++++++++++++++++++++
 src/Hakyll/Alias.hs      | 23 +++++++++++++++++++++++
 src/Hakyll/Parsec.hs     |  1 -
 src/Hakyll/TeX/BibTeX.hs |  2 +-
 4 files changed, 66 insertions(+), 2 deletions(-)
 create mode 100644 src/Hakyll/Aeson.hs
 create mode 100644 src/Hakyll/Alias.hs

(limited to 'src/Hakyll')

diff --git a/src/Hakyll/Aeson.hs b/src/Hakyll/Aeson.hs
new file mode 100644
index 0000000..f4090d5
--- /dev/null
+++ b/src/Hakyll/Aeson.hs
@@ -0,0 +1,42 @@
+module Hakyll.Aeson
+    ( compileJSON
+    , jsonCompiler
+    , compileYAML
+    , yamlCompiler
+    , JSONWriter (..)
+    , YAMLWriter (..)
+    ) where
+
+import Prolog
+import Hakyll
+import Hakyll.Error
+import Data.Aeson as A
+import Data.Yaml qualified as Y
+
+
+compileJSON :: (FromJSON a, StringConv s LazyByteString, Traversable t, MonadError [String] m) => t s -> m (t a)
+compileJSON = traverse $ liftErr . A.eitherDecode . toSL
+
+jsonCompiler :: FromJSON a => Compiler (Item a)
+jsonCompiler = getResourceLBS >>= compileJSON
+
+compileYAML :: (FromJSON a, StringConv s StrictByteString, Traversable t, MonadThrow m) => t s -> m (t a)
+compileYAML = traverse $ Y.decodeThrow . toSL
+
+yamlCompiler :: FromJSON a => Compiler (Item a)
+yamlCompiler = getResourceLBS >>= compileYAML
+
+
+newtype JSONWriter a = JSONWriter { runJSONWriter :: a }
+    deriving stock (Generic, Show)
+    deriving newtype (FromJSON, ToJSON, Binary)
+
+instance ToJSON a => Writable (JSONWriter a) where
+    write p = A.encodeFile p . runJSONWriter . itemBody
+
+newtype YAMLWriter a = YAMLWriter { runYAMLWriter :: a }
+    deriving stock (Generic, Show)
+    deriving newtype (FromJSON, ToJSON, Binary)
+
+instance ToJSON a => Writable (YAMLWriter a) where
+    write p = Y.encodeFile p . runYAMLWriter . itemBody
diff --git a/src/Hakyll/Alias.hs b/src/Hakyll/Alias.hs
new file mode 100644
index 0000000..598f5e2
--- /dev/null
+++ b/src/Hakyll/Alias.hs
@@ -0,0 +1,23 @@
+module Hakyll.Alias
+    ( aliasCtxt
+    , personCtxt
+    ) where
+
+import Prolog
+import Hakyll
+import Data.Alias
+import Data.Name
+import Data.Person
+
+
+functionField1 :: String -> (String -> Compiler String) -> Context a
+functionField1 n f = functionField n $ \case
+    [x] -> \_ -> f x
+    _ -> \_ -> fail $ "Expecting exactly one argument to " <> n
+
+aliasCtxt :: (Ord a, FromAlias a x) => String -> (String -> Compiler a) -> (x -> Compiler String) -> AliasMap a x -> Context c
+aliasCtxt name toa fromx amap = functionField1 name $ toa >=> flip resolveAlias amap >=> fromx
+
+
+personCtxt :: AliasMap Name_ Person_ -> Context a
+personCtxt = aliasCtxt "person" (parseName . toSL) (pure . toSL . personHtml)
diff --git a/src/Hakyll/Parsec.hs b/src/Hakyll/Parsec.hs
index edd7b18..a1cc706 100644
--- a/src/Hakyll/Parsec.hs
+++ b/src/Hakyll/Parsec.hs
@@ -8,7 +8,6 @@ module Hakyll.Parsec
 import Prolog
 import Hakyll
 import Text.Parsec
-import Text.Parsec.Error
 import Hakyll.Error
 
 -- evalParsec :: (MonadError [String] m) => Either ParseError a -> m a
diff --git a/src/Hakyll/TeX/BibTeX.hs b/src/Hakyll/TeX/BibTeX.hs
index a3adce7..eb87c4e 100644
--- a/src/Hakyll/TeX/BibTeX.hs
+++ b/src/Hakyll/TeX/BibTeX.hs
@@ -31,7 +31,7 @@ instance Writable [B.T] where
 
 
 compileBibtex :: (StringConv s String) => Item s -> Compiler (Item BibTeX)
-compileBibtex = compileParsec_ p . fmap toSL
+compileBibtex = fmap (B.lowerCaseFieldNames <<$>>) . compileParsec_ p . fmap toSL
     where
         p = B.skippingLeadingSpace $ B.file <* P.space <* P.eof
 
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