-- | User endpoints
module Calamity.HTTP.User (
  UserRequest (..),
  ModifyUserData (..),
  GetCurrentUserGuildsOptions (..),
) where

import Calamity.HTTP.Internal.Request
import Calamity.HTTP.Internal.Route
import Calamity.Internal.AesonThings
import Calamity.Types.Model.Channel
import Calamity.Types.Model.Guild
import Calamity.Types.Model.User
import Calamity.Types.Snowflake

import Control.Lens hiding ((.=))

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

import GHC.Generics

import Network.HTTP.Req

import TextShow

data ModifyUserData = ModifyUserData
  { username :: Maybe Text
  , -- | The avatar field should be in discord's image data format: https://discord.com/developers/docs/reference#image-data
    avatar :: Maybe Text
  }
  deriving (Show, Generic, Default)
  deriving (ToJSON) via CalamityJSON ModifyUserData

data GetCurrentUserGuildsOptions = GetCurrentUserGuildsOptions
  { before :: Maybe (Snowflake Guild)
  , after :: Maybe (Snowflake Guild)
  , limit :: Maybe Integer
  }
  deriving (Show, Generic, Default)

data UserRequest a where
  GetCurrentUser :: UserRequest User
  GetUser :: HasID User u => u -> UserRequest User
  ModifyCurrentUser :: ModifyUserData -> UserRequest User
  GetCurrentUserGuilds :: GetCurrentUserGuildsOptions -> UserRequest [Partial Guild]
  LeaveGuild :: HasID Guild g => g -> UserRequest ()
  CreateDM :: HasID User u => u -> UserRequest DMChannel

baseRoute :: RouteBuilder _
baseRoute = mkRouteBuilder // S "users" // S "@me"

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

  route GetCurrentUser =
    baseRoute
      & buildRoute
  route (GetUser (getID @User -> uid)) =
    mkRouteBuilder // S "users" // ID @User
      & giveID uid
      & buildRoute
  route (ModifyCurrentUser _) =
    baseRoute
      & buildRoute
  route (GetCurrentUserGuilds _) =
    baseRoute // S "guilds"
      & buildRoute
  route (LeaveGuild (getID @Guild -> gid)) =
    baseRoute // S "guilds" // ID @Guild
      & giveID gid
      & buildRoute
  route (CreateDM _) =
    baseRoute // S "channels"
      & buildRoute

  action GetCurrentUser = getWith
  action (GetUser _) = getWith
  action (ModifyCurrentUser o) = patchWith' $ ReqBodyJson o
  action (GetCurrentUserGuilds GetCurrentUserGuildsOptions{before, after, limit}) =
    getWithP
      ( "before" =:? (showt <$> before) <> "after" =:? (showt <$> after)
          <> "limit" =:? (showt <$> limit)
      )
  action (LeaveGuild _) = deleteWith
  action (CreateDM (getID @User -> uid)) = postWith' $ ReqBodyJson (object ["recipient_id" .= uid])