{- This file is part of funbot.
 -
 - Written in 2015, 2016 by fr33domlover <fr33domlover@riseup.net>.
 -
 - ♡ Copying is an act of love. Please copy, reuse and share.
 -
 - The author(s) have dedicated all copyright and related and neighboring
 - rights to this software to the public domain worldwide. This software is
 - distributed without any warranty.
 -
 - You should have received a copy of the CC0 Public Domain Dedication along
 - with this software. If not, see
 - <http://creativecommons.org/publicdomain/zero/1.0/>.
 -}

{-# LANGUAGE OverloadedStrings #-}

module Main (main) where

import Control.Concurrent.Chan (newChan)
import Control.Monad.IO.Class (liftIO)
import Data.Default.Class (def)
import Data.Settings.Section (empty)
import FunBot.Commands
import FunBot.ExtHandlers (handler)
import FunBot.KnownNicks
import FunBot.Memos
import FunBot.Settings
import FunBot.Settings.Persist
import FunBot.Settings.Sections
import FunBot.Sources
import FunBot.Types
import FunBot.UserOptions
import FunBot.Util (cmds)
import Network.IRC.Fun.Bot (runBot)
import Network.IRC.Fun.Bot.EventMatch
import Network.IRC.Fun.Bot.Types (Behavior (..), EventMatchSpace (..))
import Web.Feed.Collect (newCommandQueue)

import qualified Data.HashMap.Lazy as M (empty)
import qualified FunBot.Config as C
import qualified FunBot.IrcHandlers as H

-- | Bot environment content
env saveS saveM saveUO saveKN cq lq = BotEnv
    { webHookSourcePort = C.webListenerPort
    , saveSettings      = saveS
    , saveMemos         = saveM
    , saveUserOpts      = saveUO
    , saveNicks         = saveKN
    , feedErrorLogFile  = C.feedErrorLogFile
    , feedCmdQueue      = cq
    , loopbackQueue     = lq
    }

-- | Initial content of the bot state
initialState sets ms userOpts nicks = BotState
    { bsSettings    = sets
    , bsSTree       = empty
    , bsMemos       = ms
    , bsUserOptions = userOpts
    , bsKnownNicks  = nicks
    , bsLastMsgTime = M.empty
    , bsPuppet      = M.empty
    , bsPrivPuppet  = Nothing
    }

-- | Event detector specification
matchers =
    [ matchPrefixedCommand
        MatchInChannel
        True
    , matchPrefixedCommandFromNames
        MatchInPrivate
        True
        (Right commandSet)
        privCmds
    , matchRefCommandFromSet
        MatchInChannel
        modPleasePrefix'
    , matchRefCommandFromNames
        MatchInPrivate
        modPleasePrefix'
        True
        privCmds
    , matchRef
        MatchInBoth
    , defaultMatch
    ]
    where
    privCmds = cmds
        [ "help", "info", "echo", "tell", "get", "show-opts", "enable-history"
        , "disable-history", "set-history-lines", "erase-opts", "show-history"
        , "where", "lwhere", "gwhere"
        ]


-- | Bot behavior definition
behavior :: Behavior BotEnv BotState
behavior = def
    { handleJoin       = H.handleJoin
    , handleMsg        = H.handleMsg
    , handleAction     = H.handleAction
    , handleBotMsg     = H.handleBotMsg
    , commandSets      = [commandSet]
    , handleNickChange = H.handleNickChange
    , handleNames      = H.handleNames
    }

-- | Additional events sources
mkSources state =
    [ webListenerSource C.webErrorLogFile
    , feedWatcherSource C.feedErrorLogFile state
    , loopbackSource
    ]

main :: IO ()
main = do
    liftIO $ putStrLn "Loading bot settings"
    sets <- loadBotSettings
    ms <- loadBotMemos
    uos <- loadUserOptions
    nicks <- loadKnownNicks
    saveS <- mkSaveBotSettings
    saveM <- mkSaveBotMemos
    saveUO <- mkSaveUserOptions
    saveKN <- mkSaveKnownNicks
    cq <- newCommandQueue
    lq <- newChan
    let state = initialState sets ms uos nicks
    runBot
        C.configuration
        matchers
        behavior
        (mkSources state)
        handler
        (env saveS saveM saveUO saveKN cq lq)
        state
        initTree