-- | Guild endpoints
module Calamity.HTTP.Guild (
  GuildRequest (..),
  CreateGuildData (..),
  ModifyGuildData (..),
  ChannelCreateData (..),
  ChannelPosition (..),
  ListMembersOptions (..),
  AddGuildMemberData (..),
  ModifyGuildMemberData (..),
  CreateGuildBanData (..),
  ModifyGuildRoleData (..),
  ModifyGuildRolePositionsData (..),
) where

import Calamity.HTTP.Internal.Request
import Calamity.HTTP.Internal.Route
import Calamity.Internal.AesonThings
import Calamity.Internal.IntColour ()
import Calamity.Internal.Utils ()
import Calamity.Types.Model.Channel
import Calamity.Types.Model.Guild
import Calamity.Types.Model.User
import Calamity.Types.Model.Voice
import Calamity.Types.Snowflake

import Control.Lens hiding ((.=))

import Data.Aeson
import Data.Aeson.Lens
import Data.Colour (Colour)
import Data.Default.Class
import Data.Text (Text)

import GHC.Generics

import Network.HTTP.Req

import TextShow

data CreateGuildData = CreateGuildData
  { name :: Text
  , region :: Text
  , icon :: Text
  , verificationLevel :: Integer -- TODO: enums for these
  , defaultMessageNotifications :: Integer
  , explicitContentFilter :: Integer
  , roles :: [Role]
  , channels :: [Partial Channel]
  }
  deriving (Show, Generic)
  deriving (ToJSON) via CalamityJSON CreateGuildData

data ModifyGuildData = ModifyGuildData
  { name :: Maybe Text
  , region :: Maybe Text
  , icon :: Maybe Text
  , verificationLevel :: Maybe Integer -- TODO: enums for these
  , defaultMessageNotifications :: Maybe Integer
  , explicitContentFilter :: Maybe Integer
  , afkChannelID :: Maybe (Snowflake GuildChannel)
  , afkTimeout :: Maybe Integer
  , ownerID :: Maybe (Snowflake User)
  , splash :: Maybe Text
  , banner :: Maybe Text
  , systemChannelID :: Maybe (Snowflake GuildChannel)
  }
  deriving (Show, Generic, Default)
  deriving (ToJSON) via CalamityJSON ModifyGuildData

data ChannelCreateData = ChannelCreateData
  { name :: Text
  , type_ :: Maybe ChannelType
  , topic :: Maybe Text
  , bitrate :: Maybe Integer
  , userLimit :: Maybe Integer
  , rateLimitPerUser :: Maybe Integer
  , position :: Maybe Integer
  , permissionOverwrites :: Maybe [Overwrite]
  , parentID :: Maybe (Snowflake Category)
  , nsfw :: Maybe Bool
  }
  deriving (Show, Generic)
  deriving (ToJSON) via CalamityJSON ChannelCreateData

data ChannelPosition = ChannelPosition
  { id :: Snowflake GuildChannel
  , position :: Maybe Integer
  }
  deriving (Show, Generic)
  deriving (ToJSON) via CalamityJSON ChannelPosition

data ListMembersOptions = ListMembersOptions
  { limit :: Maybe Integer
  , after :: Maybe (Snowflake User)
  }
  deriving (Show, Generic, Default)

data AddGuildMemberData = AddGuildMemberData
  { accessToken :: Text
  , nick :: Maybe Text
  , roles :: Maybe [Snowflake Role]
  , mute :: Maybe Bool
  , deaf :: Maybe Bool
  }
  deriving (Show, Generic)
  deriving (ToJSON) via CalamityJSON AddGuildMemberData

data ModifyGuildMemberData = ModifyGuildMemberData
  { nick :: Maybe Text
  , roles :: Maybe [Snowflake Role]
  , mute :: Maybe Bool
  , deaf :: Maybe Bool
  , channelID :: Maybe (Snowflake VoiceChannel)
  }
  deriving (Show, Generic, Default)
  deriving (ToJSON) via CalamityJSON ModifyGuildMemberData

data CreateGuildBanData = CreateGuildBanData
  { deleteMessageDays :: Maybe Integer
  , reason :: Maybe Text
  }
  deriving (Show, Generic, Default)

data ModifyGuildRoleData = ModifyGuildRoleData
  { name :: Maybe Text
  , permissions :: Maybe Permissions
  , color :: Maybe (Colour Double)
  , hoist :: Maybe Bool
  , mentionable :: Maybe Bool
  }
  deriving (Show, Generic, Default)
  deriving (ToJSON) via CalamityJSON ModifyGuildRoleData

data ModifyGuildRolePositionsData = ModifyGuildRolePositionsData
  { id :: Snowflake Role
  , position :: Maybe Integer
  }
  deriving (Show, Generic)
  deriving (ToJSON) via CalamityJSON ModifyGuildRolePositionsData

data GuildRequest a where
  CreateGuild :: CreateGuildData -> GuildRequest Guild
  GetGuild :: HasID Guild g => g -> GuildRequest Guild
  ModifyGuild :: HasID Guild g => g -> ModifyGuildData -> GuildRequest Guild
  DeleteGuild :: HasID Guild g => g -> GuildRequest ()
  GetGuildChannels :: HasID Guild g => g -> GuildRequest [Channel]
  CreateGuildChannel :: HasID Guild g => g -> ChannelCreateData -> GuildRequest Channel
  ModifyGuildChannelPositions :: HasID Guild g => g -> [ChannelPosition] -> GuildRequest ()
  GetGuildMember :: (HasID Guild g, HasID User u) => g -> u -> GuildRequest Member
  ListGuildMembers :: HasID Guild g => g -> ListMembersOptions -> GuildRequest [Member]
  AddGuildMember :: (HasID Guild g, HasID User u) => g -> u -> AddGuildMemberData -> GuildRequest (Maybe Member)
  ModifyGuildMember :: (HasID Guild g, HasID User u) => g -> u -> ModifyGuildMemberData -> GuildRequest ()
  ModifyCurrentUserNick :: HasID Guild g => g -> Maybe Text -> GuildRequest ()
  AddGuildMemberRole :: (HasID Guild g, HasID User u, HasID Role r) => g -> u -> r -> GuildRequest ()
  RemoveGuildMemberRole :: (HasID Guild g, HasID User u, HasID Role r) => g -> u -> r -> GuildRequest ()
  RemoveGuildMember :: (HasID Guild g, HasID User u) => g -> u -> GuildRequest ()
  GetGuildBans :: HasID Guild g => g -> GuildRequest [BanData]
  GetGuildBan :: (HasID Guild g, HasID User u) => g -> u -> GuildRequest BanData
  CreateGuildBan :: (HasID Guild g, HasID User u) => g -> u -> CreateGuildBanData -> GuildRequest ()
  RemoveGuildBan :: (HasID Guild g, HasID User u) => g -> u -> GuildRequest ()
  GetGuildRoles :: HasID Guild g => g -> GuildRequest [Role]
  CreateGuildRole :: HasID Guild g => g -> ModifyGuildRoleData -> GuildRequest Role
  ModifyGuildRolePositions :: HasID Guild g => g -> ModifyGuildRolePositionsData -> GuildRequest [Role]
  ModifyGuildRole :: (HasID Guild g, HasID Role r) => g -> r -> ModifyGuildRoleData -> GuildRequest Role
  DeleteGuildRole :: (HasID Guild g, HasID Role r) => g -> r -> GuildRequest ()
  GetGuildPruneCount :: HasID Guild g => g -> Integer -> GuildRequest Integer
  BeginGuildPrune :: HasID Guild g => g -> Integer -> Bool -> GuildRequest (Maybe Integer)
  GetGuildVoiceRegions :: HasID Guild g => g -> GuildRequest [VoiceRegion]
  GetGuildInvites :: HasID Guild g => g -> GuildRequest [Invite]

baseRoute :: Snowflake Guild -> RouteBuilder _
baseRoute id =
  mkRouteBuilder // S "guilds" // ID @Guild
    & giveID id

instance Request (GuildRequest a) where
  type Result (GuildRequest a) = a

  route (CreateGuild _) =
    mkRouteBuilder // S "guilds"
      & buildRoute
  route (GetGuild (getID -> gid)) =
    baseRoute gid
      & buildRoute
  route (ModifyGuild (getID -> gid) _) =
    baseRoute gid
      & buildRoute
  route (DeleteGuild (getID -> gid)) =
    baseRoute gid
      & buildRoute
  route (GetGuildChannels (getID -> gid)) =
    baseRoute gid // S "channels"
      & buildRoute
  route (CreateGuildChannel (getID -> gid) _) =
    baseRoute gid // S "channels"
      & buildRoute
  route (ModifyGuildChannelPositions (getID -> gid) _) =
    baseRoute gid // S "channels"
      & buildRoute
  route (GetGuildMember (getID -> gid) (getID @User -> uid)) =
    baseRoute gid // S "members" // ID @User
      & giveID uid
      & buildRoute
  route (ListGuildMembers (getID -> gid) _) =
    baseRoute gid // S "members"
      & buildRoute
  route (AddGuildMember (getID -> gid) (getID @User -> uid) _) =
    baseRoute gid // S "members" // ID @User
      & giveID uid
      & buildRoute
  route (ModifyGuildMember (getID -> gid) (getID @User -> uid) _) =
    baseRoute gid // S "members" // ID @User
      & giveID uid
      & buildRoute
  route (ModifyCurrentUserNick (getID -> gid) _) =
    baseRoute gid // S "members" // S "@me" // S "nick"
      & buildRoute
  route (AddGuildMemberRole (getID -> gid) (getID @User -> uid) (getID @Role -> rid)) =
    baseRoute gid // S "members" // ID @User // S "roles" // ID @Role
      & giveID uid
      & giveID rid
      & buildRoute
  route (RemoveGuildMemberRole (getID -> gid) (getID @User -> uid) (getID @Role -> rid)) =
    baseRoute gid // S "members" // ID @User // S "roles" // ID @Role
      & giveID uid
      & giveID rid
      & buildRoute
  route (RemoveGuildMember (getID -> gid) (getID @User -> uid)) =
    baseRoute gid // S "members" // ID @User
      & giveID uid
      & buildRoute
  route (GetGuildBans (getID -> gid)) =
    baseRoute gid // S "bans"
      & buildRoute
  route (GetGuildBan (getID -> gid) (getID @User -> uid)) =
    baseRoute gid // S "bans" // ID @User
      & giveID uid
      & buildRoute
  route (CreateGuildBan (getID -> gid) (getID @User -> uid) _) =
    baseRoute gid // S "bans" // ID @User
      & giveID uid
      & buildRoute
  route (RemoveGuildBan (getID -> gid) (getID @User -> uid)) =
    baseRoute gid // S "bans" // ID @User
      & giveID uid
      & buildRoute
  route (GetGuildRoles (getID -> gid)) =
    baseRoute gid // S "roles"
      & buildRoute
  route (CreateGuildRole (getID -> gid) _) =
    baseRoute gid // S "roles"
      & buildRoute
  route (ModifyGuildRolePositions (getID -> gid) _) =
    baseRoute gid // S "roles"
      & buildRoute
  route (ModifyGuildRole (getID -> gid) (getID @Role -> rid) _) =
    baseRoute gid // S "roles" // ID @Role
      & giveID rid
      & buildRoute
  route (DeleteGuildRole (getID -> gid) (getID @Role -> rid)) =
    baseRoute gid // S "roles" // ID @Role
      & giveID rid
      & buildRoute
  route (GetGuildPruneCount (getID -> gid) _) =
    baseRoute gid // S "prune"
      & buildRoute
  route (BeginGuildPrune (getID -> gid) _ _) =
    baseRoute gid // S "prune"
      & buildRoute
  route (GetGuildVoiceRegions (getID -> gid)) =
    baseRoute gid // S "regions"
      & buildRoute
  route (GetGuildInvites (getID -> gid)) =
    baseRoute gid // S "invites"
      & buildRoute

  action (CreateGuild o) = postWith' (ReqBodyJson o)
  action (GetGuild _) = getWith
  action (ModifyGuild _ o) = patchWith' (ReqBodyJson o)
  action (DeleteGuild _) = deleteWith
  action (GetGuildChannels _) = getWith
  action (CreateGuildChannel _ o) = postWith' (ReqBodyJson o)
  action (ModifyGuildChannelPositions _ o) = postWith' (ReqBodyJson o)
  action (GetGuildMember _ _) = getWith
  action (ListGuildMembers _ ListMembersOptions{limit, after}) =
    getWithP
      ("limit" =:? (showt <$> limit) <> "after" =:? (showt <$> after))
  action (AddGuildMember _ _ o) = putWith' (ReqBodyJson o)
  action (ModifyGuildMember _ _ o) = patchWith' (ReqBodyJson o)
  action (ModifyCurrentUserNick _ nick) = patchWith' (ReqBodyJson $ object ["nick" .= nick])
  action AddGuildMemberRole{} = putEmpty
  action RemoveGuildMemberRole{} = deleteWith
  action (RemoveGuildMember _ _) = deleteWith
  action (GetGuildBans _) = getWith
  action (GetGuildBan _ _) = getWith
  action (CreateGuildBan _ _ CreateGuildBanData{deleteMessageDays, reason}) =
    putEmptyP
      ("delete-message-days" =:? (showt <$> deleteMessageDays) <> "reason" =:? (showt <$> reason))
  action (RemoveGuildBan _ _) = deleteWith
  action (GetGuildRoles _) = getWith
  action (CreateGuildRole _ o) = postWith' (ReqBodyJson o)
  action (ModifyGuildRolePositions _ o) = patchWith' (ReqBodyJson o)
  action (ModifyGuildRole _ _ o) = patchWith' (ReqBodyJson o)
  action (DeleteGuildRole _ _) = deleteWith
  action (GetGuildPruneCount _ d) = getWithP ("days" =: d)
  action (BeginGuildPrune _ d r) = postEmptyP ("days" =: d <> "compute_prune_count" =: r)
  action (GetGuildVoiceRegions _) = getWith
  action (GetGuildInvites _) = getWith

  -- this is a bit of a hack
  -- TODO: add something to allow for contextual parsing
  modifyResponse (GetGuildMember (getID @Guild -> gid) _) = _Object . at "guild_id" ?~ _String # showt (fromSnowflake gid)
  modifyResponse (ListGuildMembers (getID @Guild -> gid) _) = values . _Object . at "guild_id" ?~ _String # showt (fromSnowflake gid)
  modifyResponse _ = Prelude.id