Move some utils to new modules

src/Data/Char/Local.hs

@@ -0,0 +1,24 @@
+{- This file is part of Vervis.
+ -
+ - Written in 2016 by fr33domlover <fr33domlover@riseup.net>.
+ -
+ - ♡ Copying is an act of love. Please copy, reuse and share.
+ -
+ - The author(s) have dedicated all copyright and related and neighboring
+ - rights to this software to the public domain worldwide. This software is
+ - distributed without any warranty.
+ -
+ - You should have received a copy of the CC0 Public Domain Dedication along
+ - with this software. If not, see
+ - <http://creativecommons.org/publicdomain/zero/1.0/>.
+ -}
+
+module Data.Char.Local
+    ( isAsciiLetter
+    )
+where
+
+import Prelude
+
+isAsciiLetter :: Char -> Bool
+isAsciiLetter c = 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z'

src/Field.hs

@@ -0,0 +1,83 @@
+{- This file is part of Vervis.
+ -
+ - Written in 2016 by fr33domlover <fr33domlover@riseup.net>.
+ -
+ - ♡ Copying is an act of love. Please copy, reuse and share.
+ -
+ - The author(s) have dedicated all copyright and related and neighboring
+ - rights to this software to the public domain worldwide. This software is
+ - distributed without any warranty.
+ -
+ - You should have received a copy of the CC0 Public Domain Dedication along
+ - with this software. If not, see
+ - <http://creativecommons.org/publicdomain/zero/1.0/>.
+ -}
+
+module Field
+    ( loginField
+    , passField
+    )
+where
+
+import Import
+
+import Data.Char (isDigit)
+import Data.Char.Local (isAsciiLetter)
+
+checkLoginTemplate :: Field Handler Text -> Field Handler Text
+checkLoginTemplate =
+    let first = isAsciiLetter
+        rest c = isAsciiLetter c || isDigit c || c `elem` ("-._" :: String)
+        ok t =
+            case uncons t of
+                Just (c, r) -> first c && all rest r
+                Nothing     -> False
+    in  checkBool
+            ok
+            ( "The first character must be a letter, and every other \
+            \ character must be a letter, a digit, ‘.’ (period) , ‘-’ (dash) \
+            \or ‘_’ (underscore)." :: Text)
+
+checkLoginUnique :: Field Handler Text -> Field Handler Text
+checkLoginUnique = checkM $ \ login -> runDB $ do
+    let sharer = Sharer
+            { sharerIdent = login
+            , sharerName  = Nothing
+            }
+    mus <- checkUnique sharer
+    return $ if isNothing mus
+        then Right login
+        else Left ("This username is already in use" :: Text)
+
+loginField :: Field Handler Text
+loginField = checkLoginUnique . checkLoginTemplate $ textField
+
+checkPassLength :: Field Handler Text -> Field Handler Text
+checkPassLength =
+    let msg :: Text
+        msg =
+            "The password must be at least 8 characters long. Yes, I know, \
+            \having so many different passwords for many different sites is \
+            \annoying and cumbersome. I'm trying to figure out an \
+            \alternative, such as a client TLS certificate, that can work \
+            \somewhat like SSH and GPG keys."
+        minlen = 8
+    in  checkBool  ((>= minlen) . length) msg
+
+passConfirmField :: Field Handler Text
+passConfirmField = Field
+    { fieldParse = \ vals _files ->
+        return $ case vals of
+            [a, b] ->
+                if a == b
+                    then Right $ Just a
+                    else Left "Passwords don’t match"
+            [] -> Right Nothing
+            _ -> Left "You must enter the password twice"
+    , fieldView = \ idAttr nameAttr otherAttrs _eResult _isReq ->
+        $(widgetFile "password-field")
+    , fieldEnctype = UrlEncoded
+    }
+
+passField :: Field Handler Text
+passField = checkPassLength passConfirmField

src/Form.hs

@@ -0,0 +1,39 @@
+{- This file is part of Vervis.
+ -
+ - Written in 2016 by fr33domlover <fr33domlover@riseup.net>.
+ -
+ - ♡ Copying is an act of love. Please copy, reuse and share.
+ -
+ - The author(s) have dedicated all copyright and related and neighboring
+ - rights to this software to the public domain worldwide. This software is
+ - distributed without any warranty.
+ -
+ - You should have received a copy of the CC0 Public Domain Dedication along
+ - with this software. If not, see
+ - <http://creativecommons.org/publicdomain/zero/1.0/>.
+ -}
+
+module Form
+    ( PersonNew (..)
+    , formPersonNew
+    )
+where
+
+import Import
+
+import Field
+
+data PersonNew = PersonNew
+    { uLogin :: Text
+    , uPass  :: Text
+    , uEmail :: Maybe Text
+    }
+
+newPersonAForm :: AForm Handler PersonNew
+newPersonAForm = PersonNew
+    <$> areq loginField "Username" Nothing
+    <*> areq passField "Password" Nothing
+    <*> aopt emailField "E-mail" Nothing
+
+formPersonNew :: Form PersonNew
+formPersonNew = renderTable newPersonAForm

src/Handler/Home.hs

@@ -20,13 +20,14 @@ where
 
 import Import hiding ((==.))
 
-import Database.Esqueleto hiding (isNothing)
+import Database.Esqueleto
 import Git
+import Handler.Util (loggedIn)
 
 getHomeR :: Handler Html
 getHomeR = do
-    mpid <- maybeAuthId
-    if isNothing mpid
+    li <- loggedIn
+    if li
         then do
             rows <- do
                 repos <- runDB $ select $ from $ \ (sharer, project, repo) -> do

src/Handler/Person.hs

@@ -24,88 +24,12 @@ where
 import Import hiding ((==.))
 --import Prelude
 
-import Data.Char (isDigit)
 import Database.Esqueleto hiding (isNothing)
+import Form
 --import Model
 import Text.Blaze (text)
 import Yesod.Auth.HashDB (setPassword)
 
-data PersonNew = PersonNew
-    { uLogin :: Text
-    , uPass  :: Text
-    , uEmail :: Maybe Text
-    }
-
-isAsciiLetter :: Char -> Bool
-isAsciiLetter c = 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z'
-
-checkLoginTemplate :: Field Handler Text -> Field Handler Text
-checkLoginTemplate =
-    let first = isAsciiLetter
-        rest c = isAsciiLetter c || isDigit c || c `elem` ("-._" :: String)
-        ok t =
-            case uncons t of
-                Just (c, r) -> first c && all rest r
-                Nothing     -> False
-    in  checkBool
-            ok
-            ( "The first character must be a letter, and every other \
-            \ character must be a letter, a digit, ‘.’ (period) , ‘-’ (dash) \
-            \or ‘_’ (underscore)." :: Text)
-
-checkLoginUnique :: Field Handler Text -> Field Handler Text
-checkLoginUnique = checkM $ \ login -> runDB $ do
-    let sharer = Sharer
-            { sharerIdent = login
-            , sharerName  = Nothing
-            }
-    mus <- checkUnique sharer
-    return $ if isNothing mus
-        then Right login
-        else Left ("This username is already in use" :: Text)
-
-loginField :: Field Handler Text
-loginField = checkLoginUnique . checkLoginTemplate $ textField
-
-checkPassLength :: Field Handler Text -> Field Handler Text
-checkPassLength =
-    let msg :: Text
-        msg =
-            "The password must be at least 8 characters long. Yes, I know, \
-            \having so many different passwords for many different sites is \
-            \annoying and cumbersome. I'm trying to figure out an \
-            \alternative, such as a client TLS certificate, that can work \
-            \somewhat like SSH and GPG keys."
-        minlen = 8
-    in  checkBool  ((>= minlen) . length) msg
-
-passConfirmField :: Field Handler Text
-passConfirmField = Field
-    { fieldParse = \ vals _files ->
-        return $ case vals of
-            [a, b] ->
-                if a == b
-                    then Right $ Just a
-                    else Left "Passwords don’t match"
-            [] -> Right Nothing
-            _ -> Left "You must enter the password twice"
-    , fieldView = \ idAttr nameAttr otherAttrs _eResult _isReq ->
-        $(widgetFile "password-field")
-    , fieldEnctype = UrlEncoded
-    }
-
-passField :: Field Handler Text
-passField = checkPassLength passConfirmField
-
-newPersonAForm :: AForm Handler PersonNew
-newPersonAForm = PersonNew
-    <$> areq loginField "Username" Nothing
-    <*> areq passField "Password" Nothing
-    <*> aopt emailField "E-mail" Nothing
-
-formPersonNew :: Form PersonNew
-formPersonNew = renderTable newPersonAForm
-
 -- | Get list of users
 getPeopleR :: Handler Html
 getPeopleR = do

src/Handler/Util.hs

@@ -0,0 +1,24 @@
+{- This file is part of Vervis.
+ -
+ - Written in 2016 by fr33domlover <fr33domlover@riseup.net>.
+ -
+ - ♡ Copying is an act of love. Please copy, reuse and share.
+ -
+ - The author(s) have dedicated all copyright and related and neighboring
+ - rights to this software to the public domain worldwide. This software is
+ - distributed without any warranty.
+ -
+ - You should have received a copy of the CC0 Public Domain Dedication along
+ - with this software. If not, see
+ - <http://creativecommons.org/publicdomain/zero/1.0/>.
+ -}
+
+module Handler.Util
+    ( loggedIn
+    )
+where
+
+import Import
+
+loggedIn :: Handler Bool
+loggedIn = isJust <$> maybeAuthId

vervis.cabal

@@ -35,6 +35,9 @@ flag library-only
 
 library
   exposed-modules:     Application
+                       Data.Char.Local
+                       Field
+                       Form
                        Foundation
                        Git
                        Import
@@ -46,6 +49,7 @@ library
                        Handler.Home
                        Handler.Person
                        Handler.Project
+                       Handler.Util
                        Style
   -- other-modules:       
   default-extensions:  TemplateHaskell