From 4b87e6879228a3491609254949c41a2405c29ad5 Mon Sep 17 00:00:00 2001
From: Aleksey Veresov <aleksey@veresov.pro>
Date: Thu, 11 Feb 2021 00:55:44 +0300
Subject: Library test.

---
 Main.hs      | 32 +++++++++++++++++++++++++++++++-
 package.yaml |  1 +
 src/Suem.hs  | 13 ++++++++++---
 stack.yaml   |  6 +-----
 4 files changed, 43 insertions(+), 9 deletions(-)

diff --git a/Main.hs b/Main.hs
index 48920a4..7b76428 100644
--- a/Main.hs
+++ b/Main.hs
@@ -1,6 +1,36 @@
 module Main where
 
+import Options.Applicative
 import Suem
 
+config :: Parser Config
+config = Config
+      <$> option auto
+          ( long "frequency"
+         <> short 'f'
+         <> metavar "HERTZ"
+         <> showDefault
+         <> value 8000000
+         <> help "Machine frequency in Hz" )
+      <*> option auto
+          ( long "ram"
+         <> short 'm'
+         <> metavar "RAM_SIZE"
+         <> showDefault
+         <> value (8 * 1024 * 1024)
+         <> help "Available RAM in bytes" )
+      <*> option auto
+          ( long "rom"
+         <> short 'r'
+         <> metavar "ROM_PATH"
+         <> showDefault
+         <> value "rom.bin"
+         <> help "Path to file to load into ROM" )
+
 main :: IO ()
-main = printROM
+main = suem =<< execParser opts
+  where
+    opts = info (config <**> helper)
+      ( fullDesc
+     <> progDesc "Emulator of Suen, machine on M68000"
+     <> header "suem - Suen emulator" )
diff --git a/package.yaml b/package.yaml
index af4a48e..546eed6 100644
--- a/package.yaml
+++ b/package.yaml
@@ -19,3 +19,4 @@ executable:
   ghc-options: -threaded -rtsopts -with-rtsopts=-N
   dependencies:
   - suem
+  - optparse-applicative
diff --git a/src/Suem.hs b/src/Suem.hs
index f74976e..bbdfa78 100644
--- a/src/Suem.hs
+++ b/src/Suem.hs
@@ -1,4 +1,11 @@
-module Suem (printROM) where
+module Suem (Config(..), suem) where
 
-printROM :: IO ()
-printROM = putStrLn "ROM"
+data Config = Config {
+    freq :: Int,
+    ram  :: Int,
+    rom  :: String
+}
+
+suem :: Config -> IO ()
+suem (Config _ _ r) = putStrLn $ "Loaded " ++ r ++ " into ROM."
+suem _              = return ()
diff --git a/stack.yaml b/stack.yaml
index eb28bf4..d5cd0ae 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,8 +1,4 @@
 packages:
 - .
 system-ghc: true
-resolver:
-  compiler: ghc-8.8.4
-extra-deps:
-- vector-0.12.2.0
-- network-3.1.2.1
+resolver: lts-16.21
-- 
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