From b3c8fa0b472e5cb47404a1412ca2de429958816a Mon Sep 17 00:00:00 2001
From: Nitin Prakash <prakash.nitin63@gmail.com>
Date: Thu, 22 Aug 2024 14:01:49 +0530
Subject: [PATCH] core types

---
 Makefile                   |  2 +-
 azure-email/Azure/Email.hs | 76 +++++++++++++++++++++++++++++++++++++-
 2 files changed, 75 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index ff41316..8d188a2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-SRC=$(shell find azure-auth/ azure-key-vault/ azure-blob-storage/ -type f -name '*.hs')
+SRC=$(shell find azure-auth/ azure-key-vault/ azure-blob-storage/ azure-email/ -type f -name '*.hs')
 
 .PHONY: format
 format: $(SRC)
diff --git a/azure-email/Azure/Email.hs b/azure-email/Azure/Email.hs
index 4bc78fa..abf5092 100644
--- a/azure-email/Azure/Email.hs
+++ b/azure-email/Azure/Email.hs
@@ -1,2 +1,74 @@
-module Azure.Email
-    ( ) where
+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE DerivingVia #-}
+
+module Azure.Email () where
+
+import Data.Aeson (ToJSON (..), object, (.=))
+import Data.Text (Text)
+import GHC.Generics (Generic)
+
+data EmailAddress = EmailAddress
+    { eaEmail :: !Text
+    , eaDisplayName :: !Text
+    }
+    deriving stock (Eq, Show, Generic)
+
+instance ToJSON EmailAddress where
+    toJSON EmailAddress{..} =
+        object
+            [ "address" .= eaEmail
+            , "displayName" .= eaDisplayName
+            ]
+
+-- | Fields to represent @cc@, @bcc@ and @to@ in an email
+data EmailRecipients = EmailRecipients
+    { ccRecipients :: ![EmailAddress]
+    , bccRecipients :: ![EmailAddress]
+    , toRecipients :: ![EmailAddress]
+    }
+    deriving stock (Generic)
+
+instance ToJSON EmailRecipients where
+    toJSON EmailRecipients{..} =
+        object
+            [ "to" .= toRecipients
+            , "cc" .= ccRecipients
+            , "bcc" .= bccRecipients
+            ]
+
+-- | Azure email requires both HTML and plain text format email content
+data EmailContent = EmailContent
+    { ecHtml :: !Text
+    -- ^ Html version of the email message.
+    , ecPlainText :: !Text
+    -- ^ Plain text version of the email message.
+    , ecSubject :: !Text
+    -- ^ Subject of the email message.
+    }
+    deriving stock (Eq, Show, Generic)
+
+instance ToJSON EmailContent where
+    toJSON EmailContent{..} =
+        object
+            [ "plainText" .= ecPlainText
+            , "html" .= ecHtml
+            , "subject" .= ecSubject
+            ]
+
+{- | Source:
+https://learn.microsoft.com/en-us/rest/api/communication/dataplane/email/send?view=rest-communication-dataplane-2023-03-31&tabs=HTTP
+-}
+data AzureEmailRequest = AzureEmailRequest
+    { aerContent :: !EmailContent
+    , aerRecipients :: !EmailRecipients
+    , aerSenderAddress :: !Text -- TODO: This should probably be it's own newtype
+    }
+    deriving stock (Generic)
+
+instance ToJSON AzureEmailRequest where
+    toJSON AzureEmailRequest{..} =
+        object
+            [ "content" .= aerContent
+            , "recipients" .= aerRecipients
+            , "senderAddress" .= aerSenderAddress
+            ]