open System
open System.Net.Http
open System.Threading
open System.Threading.Tasks
open PublishHelperBot.Environment
open PublishHelperBot.YoutubeDl
open PublishHelperBot.Telegram
open Telegram.Bot
open Telegram.Bot.Polling
open Telegram.Bot.Types
open Telegram.Bot.Types.Enums

let cancellation = new CancellationTokenSource()
let config = createConfig "SBPB_CONFIG_PATH"
let botClient = TelegramBotClient (config.token, new HttpClient())

let youtubeDlClient =
    YoutubeDlClient.createClient {
        Client = new HttpClient()
        BaseUrl = config.youtubeDlUrl
    }

let tgService =
    TgService.createService {
        Client = botClient
        ChannelId = config.chanelId
        YoutubeDlClient = youtubeDlClient
        AdminChatId = config.adminChatId
    }

let youtubeDlService =
    YoutubeDlService.createService youtubeDlClient tgService (config.tmpYtdlSavePath |> Option.defaultValue "/tmp")

let isObsoleteUpdate =
    let startDate = DateTime.UtcNow
    fun (update: Update) ->
        update.Type = UpdateType.Message
        && update.Message.Date < startDate

let handlePollingError _ (e: Exception) _ =
    Logging.logger.Error(e, "Polling error")
    Task.CompletedTask

Logging.logger.Information("Starting bot")

let botHandler = TgUpdateHandler.createHandler config tgService youtubeDlService
botClient.StartReceiving(
    (fun client update _ ->
        if not (isObsoleteUpdate update) then
           botHandler.PostUpdate(update)
        Task.CompletedTask
    ),
    handlePollingError,
    ReceiverOptions(
        AllowedUpdates = Array.zeroCreate<UpdateType> 0
   )
)

Logging.logger.Information("Я родился")
Console.CancelKeyPress |> Event.add (fun _ -> cancellation.Cancel(); printfn "Сворачиваемся...")
Async.RunSynchronously(
    async {
        while (not(cancellation.Token.IsCancellationRequested)) do
            do! Async.Sleep 500 |> Async.Ignore
    })