{-
 - Copyright 2011 Per Magnus Therning
 -
 - Licensed under the Apache License, Version 2.0 (the "License");
 - you may not use this file except in compliance with the License.
 - You may obtain a copy of the License at
 -
 -     http://www.apache.org/licenses/LICENSE-2.0
 -
 - Unless required by applicable law or agreed to in writing, software
 - distributed under the License is distributed on an "AS IS" BASIS,
 - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 - See the License for the specific language governing permissions and
 - limitations under the License.
 -}

module Main where

import Add
import BuildPkgs
import BumpPkgs
import Sync
import Versions
import ListPkgs
import Updates
import Util.Misc
import Urls
import PkgBuild
import ConvertDB
import Remove

import Paths_cblrepo

import Control.Monad
import Control.Monad.Reader
import Distribution.Text
import System.Console.CmdArgs
import System.Directory
import System.FilePath

-- {{{1 command line arguments
argAppDir = appDir := def += explicit += name "appdir" += help "application data directory" += typDir
argDbFile = dbFile := "cblrepo.db" += explicit += name "db" += help "package database" += typFile
argDryRun = dryRun := False += explicit += name "n" += help "dry run"

cmdAddPkg = record defCmdAdd
    [ argAppDir, argDbFile
    , patchDir := "patches" += explicit += name "patchdir" += help "location of patches" += typDir
    , argDryRun
    , cmdAddGhcPkgs := def += explicit += name "g" += name "ghc-pkg" += typ "PKG,VER" += help "GHC base package (multiple)"
    , cmdAddDistroPkgs := def += explicit += name "d" += name "distro-pkg" += typ "PKG,VER,REL" += help "distro package (multiple)"
    , cmdAddUrlCbls := def += explicit += name "u" += name "cbl-url" += typ "URL" += help "url of Cabal file (multiple)"
    , cmdAddFileCbls := def += explicit += name "f" += name "cbl-file" += typFile += help "Cabal file (multiple)"
    , cmdAddCbls := def += args += typ "PKG,VER"
    ] += name "add" += help "add a package to the database"

cmdBumpPkgs = record defBumpPkgs
    [ argAppDir, argDbFile
    , argDryRun
    , inclusive := False += explicit += name "inclusive" += help "include listed packages"
    , pkgs := def += args += typ "PKG"
    ] += name "bump" += help "bump packages that need it after updating the named packages"

cmdBuildPkgs = record defBuildPkgs
    [ argAppDir, argDbFile
    , pkgs := def += args += typ "PKG"
    ] += name "build" += help "list packages that need rebuilding, in order"

cmdSync = record defSync [ argAppDir ] += name "sync" += help "update the index"

cmdVersions = record defVersions
    [ argAppDir
    , pkgs := def += args += typ "PKG"
    ] += name "versions" += help "list available versions"

cmdUpdates = record defUpdates
    [ argAppDir, argDbFile
    , idxStyle := False += explicit += name "s" += help "a shorter output suitable for scripting"
    ] += name "updates" += help "check for available updates"

cmdListPkgs = record defCmdListPkgs
    [ argAppDir, argDbFile
    , listGhc := False += explicit += name "g" += name "ghc" += help "list ghc packages"
    , listDistro := False += explicit += name "d" += name "distro" += help "list distro packages"
    , noListRepo := False += explicit += name "no-repo" += help "do not list repo packages"
    ] += name "list" += help "list packages in repo"

cmdUrls = record defUrls
    [ argAppDir
    , pkgVers := def += args += typ "STRING,STRING"
    ] += help "list urls of cabal files for the given packages" += details
        [ "The format for a package is <name>,<version>." ]

cmdPkgBuild = record defPkgBuild
    [ argAppDir, argDbFile
    , patchDir := "patches" += explicit += name "patchdir" += help "location of patches (patches)" += typDir
    , pkgs := def += args += typ "PKG"
    ] += help "create a PKGBUILD, and other files necessary for an Arch package"

cmdConvertDb = record defConvertDb
    [ argAppDir
    , inDbFile := "cblrepo.db" += explicit += name "i" += name "indb" += typFile += help "old database"
    , outDbFile := "new-cblrepo.db" += explicit += name "o" += name "outdb" += typFile += help "new database"
    ] += help "convert an old database to the new format"

cmdRemovePkg = record defRemovePkg
    [ argAppDir, argDbFile, argDryRun
    , pkgs := def += args += typ "PKG"
    ] += name "rm" += help "remove packages"

cmds = cmdArgsMode_ $ modes_
    [ cmdAddPkg
    , cmdBuildPkgs
    , cmdBumpPkgs
    , cmdSync
    , cmdVersions
    , cmdListPkgs
    , cmdUpdates
    , cmdUrls
    , cmdPkgBuild
    , cmdConvertDb
    , cmdRemovePkg
    ]
    += program progName
    += summary (progName ++ " v" ++ (display version))
    += help "maintain a database of dependencies of CABAL packages"

-- {{{1 main
main = do
    defAppDir <- getAppUserDataDirectory progName
    cmdArgsRun cmds >>= \ c -> do
        let aD = if null (appDir c) then defAppDir else (appDir c)
        let c' = c { appDir = aD }
        createDirectoryIfMissing True (aD)
        case c' of
            CmdAdd {} -> runCommand c' add
            BuildPkgs {} -> runCommand c' buildPkgs
            BumpPkgs {} -> runCommand c' bumpPkgs
            Sync {} -> runCommand c' sync
            Versions {} -> runCommand c' versions
            CmdListPkgs {} -> runCommand c' listPkgs
            Updates {} -> runCommand c' updates
            Urls {} -> runCommand c' urls
            PkgBuild {} -> runCommand c' pkgBuild
            ConvertDb {} -> runCommand c' convertDb
            RemovePkg {} -> runCommand c' remove