module Main (main)
    where

import DB
import System.Environment
import Tests
import HierarchicalDatabase
import TerrainData
import Protocol
import GridRayCaster
import Data.Version
import Paths_roguestar_engine
import Data.List (intersperse)

roguestar_version_number :: String
roguestar_version_number = concat $
    intersperse "." $ map show $ versionBranch version

roguestar_program_name :: String
roguestar_program_name = "roguestar-engine"

roguestar_id_string :: String
roguestar_id_string = (roguestar_program_name ++ " " ++ roguestar_version_number)

-- |
-- Processes a single command line argument.
--
runByArgs :: String -> IO ()

runByArgs "tests" = do testsPassed <- runAllTests ([sampleTestCase] ++
						   insidenessTests ++
						   gridRayCasterTests)
		       if testsPassed
			  then putStrLn "All tests passed."
			  else putStrLn "Error: a test failed."

runByArgs "version" = do putStrLn roguestar_id_string

runByArgs "test-terrain-generator" = do seed <- randomIO
					let example_terrain = generateExampleTerrain seed
					    in do putStrLn "Terrain Map of (-20..20),(-10..10)"
                                                  mapM_ putStrLn $ prettyPrintTerrain ((-20,20),(-10,10)) example_terrain
						  putStrLn "Terrain Map of (5460..5500),(-1010..-990)"
                                                  mapM_ putStrLn $ prettyPrintTerrain ((5460,5500),(-1010,-990)) example_terrain
						  putStrLn "Terrain Map of (5461..5501),(-1009..-989)"
                                                  mapM_ putStrLn $ prettyPrintTerrain ((5461,5501),(-1009,-989)) example_terrain

runByArgs "begin" = mainLoop initial_db

runByArgs "over" = putStrLn "over"

runByArgs "help" = do putStrLn "Commands:"
		      putStrLn "begin                    - begin a protocol session (used by GUI clients and experts)"
		      putStrLn "help                     - print this message"
		      putStrLn "over                     - print \"over\" on a line by itself"
		      putStrLn "tests                    - run a few tests"
		      putStrLn "test-terrain-generator   - display an example terrain map"
		      putStrLn "version                  - print the version string"

runByArgs invalidArgument = do putStrLn ("Error: unrecognized argument: " ++ invalidArgument)
			       fail "Unrecognized argument in runByArgs"

--
-- Each argument corresponds to a particular "runByArgs" command.  Run them all in order.
--
main :: IO ()
main =
    do args <- getArgs
       mapM_ runByArgs args