module Degenz.Store

open System
open System.Threading.Tasks
open DSharpPlus.Entities
open DSharpPlus
open DSharpPlus.EventArgs
open DSharpPlus.SlashCommands
open Degenz
open Degenz.Embeds
open Degenz.Shared
open Newtonsoft.Json

let getItemFromArmoury id = armoury |> Array.find (fun w -> w.Id = id)

let removeExpiredActions actions =
    actions
    |> Array.filter (fun (act : Action) ->
        let item = armoury |> Array.find (fun w -> w.Id = act.ActionId)
        DateTime.UtcNow - act.Timestamp < TimeSpan.FromMinutes(int item.Cooldown))

let viewStore (ctx : InteractionContext) =
    async {
        do! ctx.CreateResponseAsync(InteractionResponseType.ChannelMessageWithSource, Embeds.storeListing armoury)
            |> Async.AwaitTask
    } |> Async.StartAsTask
      :> Task

let buyItem (ctx : InteractionContext) itemId =
    async {
        let! playerResult = DbService.tryFindPlayer ctx.Member.Id
        let item = armoury |> Array.find (fun w -> w.Id = itemId)
        match playerResult with
        | Some player ->
            let newBalance = player.Bank - item.Cost
            if newBalance >= 0<GBT> then
                let playerHasItem = player.Arsenal |> Array.exists (fun w -> item.Id = w.Id)
                if not playerHasItem then
                    let p = { player with Bank = newBalance ; Arsenal = Array.append [| item |] player.Arsenal }
                    do! DbService.updatePlayer p
                    do! createSimpleResponseAsync $"Successfully purchased {item.Name}! You now have {newBalance} remaining" ctx
                else
                    do! createSimpleResponseAsync $"You already own this item!" ctx
            else
                do! createSimpleResponseAsync $"You do not have sufficient funds to buy this item! Current balance: {player.Bank} GBT" ctx
        | None -> do! notYetAHackerMsg ctx
    } |> Async.StartAsTask
      :> Task

let constructItemButtons playerInfo itemType (items : 'a array) =
    items
    |> Seq.map (fun item -> DiscordButtonComponent(ButtonStyle.Primary, $"{playerInfo}-{itemType}-{item}", $"{item}"))

let sell (ctx : InteractionContext) =
    async {
        let! playerResult = DbService.tryFindPlayer ctx.Member.Id
        match playerResult with
        | Some player ->
            let hasInventoryToSell = Array.length player.Arsenal > 0
            if hasInventoryToSell then
                let builder = DiscordInteractionResponseBuilder()
                builder.AddEmbed (constructEmbed "Pick the item you wish to sell.") |> ignore

                Array.chunkBySize 5 player.Arsenal
                |> Array.iter
                    (fun wps ->
                        wps
                        |> Array.map (fun w -> DiscordButtonComponent(ButtonStyle.Primary, $"{w.Type}-{w.Id}", $"{w.Name}"))
                        |> Seq.cast<DiscordComponent>
                        |> builder.AddComponents
                        |> ignore)
                builder.AsEphemeral true |> ignore

                do! ctx.CreateResponseAsync(InteractionResponseType.ChannelMessageWithSource, builder)
                    |> Async.AwaitTask
            else
                do! createSimpleResponseAsync "You currently have no inventory to sell" ctx
        | None -> do! notYetAHackerMsg ctx
        return ()
    } |> Async.StartAsTask
      :> Task

let updateArsenal player salePrice updatedArsenal = { player with Bank = player.Bank + salePrice ; Arsenal = updatedArsenal }

let sellItem (event : ComponentInteractionCreateEventArgs) player itemId =
    async {
        let item = armoury |> Array.find (fun i -> i.Id = itemId)
        let updatedPlayer = { player with Bank = player.Bank + item.Cost ; Arsenal = player.Arsenal |> Array.filter (fun w -> w.Id = itemId)}
        do! DbService.updatePlayer updatedPlayer
        let builder = DiscordInteractionResponseBuilder()
        builder.IsEphemeral <- true
        builder.Content <- $"Sold {item.Type} {item.Name} for {item.Cost}! Current Balance: {updatedPlayer.Bank}"
        do! event.Interaction.CreateResponseAsync(InteractionResponseType.UpdateMessage, builder)
            |> Async.AwaitTask
    }

let handleSellButtonEvents (_ : DiscordClient) (event : ComponentInteractionCreateEventArgs) =
    async {
        let! playerResult = DbService.tryFindPlayer event.User.Id
        match playerResult with
        | Some player ->
            let itemId = int <| event.Id.Split("-").[1]
            do! sellItem event player itemId
        | None ->
            let builder = DiscordInteractionResponseBuilder()
            builder.IsEphemeral <- true
            builder.Content <- "An error occurred and the user doesn't not exist"
            do! event.Interaction.CreateResponseAsync(InteractionResponseType.UpdateMessage, builder)
                |> Async.AwaitTask
    } |> Async.StartAsTask
    :> Task

type Store() =
    inherit ApplicationCommandModule ()

    [<SlashCommand("view-store", "View items available for purchase")>]
    member _.ViewStore (ctx : InteractionContext) = viewStore ctx

    [<SlashCommand("buy-hack", "Purchase a hack attack you can use to earn GoodBoyTokenz")>]
    member _.BuyHack (ctx : InteractionContext, [<Option("hack-id", "The ID of the hack you wish to purchase")>] hackId : HackId) =
        buyItem ctx (int hackId)

    [<SlashCommand("buy-shield", "Purchase a hack shield so you can protect your GoodBoyTokenz")>]
    member this.BuyShield (ctx : InteractionContext, [<Option("shield-id", "The ID of the shield you wish to purchase")>] shieldId : ShieldId) =
        buyItem ctx (int shieldId)

    [<SlashCommand("sell", "Sell an item in your inventory for GoodBoyTokenz")>]
    member this.SellItem (ctx : InteractionContext) = sell ctx