From 50cd59cb3e6d20afe48a50fa9dc0c3a9cf9d9960 Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@kitenet.net>
Date: Thu, 10 Apr 2014 21:09:20 -0400
Subject: new more expressive config.hs WIP

---
 Propellor/Attr.hs | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Propellor/Attr.hs

(limited to 'Propellor/Attr.hs')

diff --git a/Propellor/Attr.hs b/Propellor/Attr.hs
new file mode 100644
index 00000000..4bc1c2c7
--- /dev/null
+++ b/Propellor/Attr.hs
@@ -0,0 +1,47 @@
+{-# LANGUAGE PackageImports #-}
+
+module Propellor.Attr where
+
+import Propellor.Types
+import Propellor.Types.Attr
+
+import "mtl" Control.Monad.Reader
+import qualified Data.Set as S
+import qualified Data.Map as M
+
+pureAttrProperty :: Desc -> (Attr -> Attr) -> AttrProperty 
+pureAttrProperty desc = AttrProperty $ Property ("has " ++ desc)
+	(return NoChange)
+
+hostname :: HostName -> AttrProperty
+hostname name = pureAttrProperty ("hostname " ++ name) $
+	\d -> d { _hostname = name }
+
+getHostName :: Propellor HostName
+getHostName = asks _hostname
+
+cname :: Domain -> AttrProperty
+cname domain = pureAttrProperty ("cname " ++ domain) (addCName domain)
+
+cnameFor :: IsProp p => Domain -> (Domain -> p) -> AttrProperty
+cnameFor domain mkp =
+	let p = mkp domain
+	in AttrProperty p (addCName domain)
+
+addCName :: HostName -> Attr -> Attr
+addCName domain d = d { _cnames = S.insert domain (_cnames d) }
+
+hostnameless :: Attr
+hostnameless = newAttr (error "hostname Attr not specified")
+
+hostAttr :: Host -> Attr
+hostAttr (Host _ mkattrs) = mkattrs hostnameless
+
+hostProperties :: Host -> [Property]
+hostProperties (Host ps _) = ps
+
+hostMap :: [Host] -> M.Map HostName Host
+hostMap l = M.fromList $ zip (map (_hostname . hostAttr) l) l 
+
+findHost :: [Host] -> HostName -> Maybe Host
+findHost l hn = M.lookup hn (hostMap l)
-- 
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