module Degenz.Thief

open System
open System.Threading.Tasks
open DSharpPlus
open DSharpPlus.Entities
open DSharpPlus.SlashCommands
open Degenz.Messaging

[<Literal>]
let StealActionId = 12
[<Literal>]
let VictimDefenseActionId = 12

let ThiefCooldown = TimeSpan.FromMinutes(1)
let VictimRecovery = TimeSpan.FromHours(12)

type StealResult =
    | Success
    | WentToPrison
    | VictimRanAway

let getRandomStealBtnLabels () =
    let rand = Random(Guid.NewGuid().GetHashCode())
    let affirmative = [| "LFG" ; "YOLO" ; "IDGAF" |]
    let negative = [| "NOPE" ; "IM OUT" ; "BAIL" |]
    ( affirmative.[rand.Next(0, 3)] , negative.[rand.Next(0, 3)] )

let chanceOfSuccessMsg = function
    | amt when amt < 0.20 -> "Looking pretty bad"
    | amt when amt < 0.50 -> "I mean, maybe"
    | amt when amt < 0.80 -> "I think you got this"
    | _                   -> "Totally worth it"

let targetEvaluationMsg = function
    | amt when amt < 0.20 -> "but man, they look swole"
    | amt when amt < 0.50 -> "but they look a little confident"
    | amt when amt < 0.80 -> "and they're looking a little nervous"
    | _                   -> "and they look weak af man"

let payout defenderBank chance =
    let rand = Random(Guid.NewGuid().GetHashCode())
    let baseAmount = defenderBank * 0.1 * (1.0 - chance)
    let randomBonus = baseAmount * rand.NextDouble() * chance |> ceil
    let randomAmount = baseAmount + randomBonus |> int
    max 1 randomAmount

let getStealEmbed chance prize (target : PlayerData) =
    let buttons =
        let yes , no = getRandomStealBtnLabels ()
        [ DiscordButtonComponent(ButtonStyle.Success, $"Steal-yes-{target.DiscordId}-{target.Name}-{chance}-{prize}", yes)
          DiscordButtonComponent(ButtonStyle.Danger, $"Steal-no", no) ]
        |> Seq.cast<DiscordComponent>
    let embed =
        DiscordEmbedBuilder()
          .AddField("Chance of Success", $"{chanceOfSuccessMsg chance}", true)
          .AddField("Payout", $"{prize}", true)
          .WithDescription($"{target.Name} is coming towards you in a dark alley, {targetEvaluationMsg chance}")
          .WithImageUrl("https://cdnb.artstation.com/p/assets/images/images/017/553/457/large/maarten-hof-backalley-mainshot.jpg")
          .WithTitle($"Steal Money")

    DiscordFollowupMessageBuilder()
        .AddEmbed(embed)
        .AddComponents(buttons)
        .AsEphemeral(true)

let getResultEmbed targetName result =
    let resultMsg , msg , img =
        match result with
        | Success ->
            "You successfully robbed the poor bastard"
            , "Your mean ugly face and athletic physique intimidated your poor victim into giving you their money"
            , "https://f8n-production-collection-assets.imgix.net/0x3B3ee1931Dc30C1957379FAc9aba94D1C48a5405/127502/QmPLPg1CLovKzS7mP8QkrMoHws1D4VZTzpfbZBALLwKZ5b/nft.png"
        | WentToPrison ->
            "Looks like you went to prison"
            , $"{targetName} knows Karate and elbowed you in the nose. While unconscious, they called the cops. You're on your way to prison now... "
            , "https://thumbs.dreamstime.com/b/vector-pixel-art-prisoner-isolated-cartoon-vector-pixel-art-prisoner-129807237.jpg"
        | VictimRanAway ->
            "You tried to snatch their money and they ran away"
            , $"{targetName} got nervous seeing a shadowy figure and ran in the opposite direction"
            , "https://i.imgur.com/NLHMvVK.jpg"

    DiscordEmbedBuilder()
      .AddField("Result" , resultMsg)
      .WithDescription(msg)
      .WithImageUrl(img)
      .WithTitle($"Robbery Results")

let checkVictimStealingCooldown defender attacker =
    defender
    |> Player.getDefenses
    |> Array.tryFind (fun act -> act.ActionId = VictimDefenseActionId)
    |> function
       | Some act ->
           let cooldown = VictimRecovery - (DateTime.UtcNow - act.Timestamp)
           let hours = if cooldown.Hours = 0 then "hour" else $"{cooldown.Hours} hours"
           Error $"{defender.Name} was robbed recently so they won't be going out for at least another {hours}."
       | None -> Ok attacker

// TODO: Look for ways to generalize checking for action cooldowns
let checkThiefCooldown attacker =
    attacker
    |> Player.getAttacks
    |> Array.tryFind (fun act -> act.ActionId = StealActionId)
    |> function
       | Some act ->
           if ThiefCooldown > (DateTime.UtcNow - act.Timestamp) then
               let cooldown = ThiefCooldown - (DateTime.UtcNow - act.Timestamp)
               let minutes = if cooldown.Minutes = 0 then "minute" else $"{cooldown.Minutes} minutes"
               Error $"Whoa there you clepto, wait at least another {minutes} before you try stealing again."
           else
               Ok attacker
       | None -> Ok attacker

let steal target (ctx : IDiscordContext) =
    Game.executePlayerActionWithTarget target ctx (fun attacker defender -> async {
        do! attacker
            |> checkVictimStealingCooldown defender
            >>= checkThiefCooldown
            |> handleResultWithResponse ctx (fun player -> async {
                let ``base`` = 0.5
                let winPercentage = double (attacker.Stats.Strength - defender.Stats.Strength) * 0.45 + ``base``
                let prize = payout (float defender.Bank) winPercentage
                let embed = getStealEmbed winPercentage prize defender

                do! ctx.FollowUp(embed) |> Async.AwaitTask
            })
    })

let handleSteal (ctx : IDiscordContext) =
    let split = ctx.GetInteractionId().Split("-")
    let answer = split.[1]

    let handleYes player = async {
        let targetId = uint64 split.[2]
        let targetName = split.[3]
        let chance = double split.[4]
        let prize = int split.[5] * 1<GBT>

        let rand = Random(Guid.NewGuid().GetHashCode())

        let result = chance >= rand.NextDouble() , rand.Next(0,3) = 0
        let dp = { DiscordPlayer.Id = targetId ; DiscordPlayer.Name = targetName }
        let stealAction = { ActionId = StealActionId ; Type = Attack { AttackResult.Result = false ; AttackResult.Target = dp } ; Timestamp = DateTime.UtcNow }
        // TODO: Send event to the hall of privacy
        match result with
        | true , _ ->
            let xp = 15
            let embed = getResultEmbed targetName Success
            embed.AddField("$GBT Stolen", string prize) |> ignore
            embed.AddField("XP Gained", $"{xp}") |> ignore
            do! Messaging.sendFollowUpEmbed ctx (embed.Build())
            match! DbService.tryFindPlayer targetId with
            | Some t ->
                let action = { ActionId = VictimDefenseActionId ; Type = Defense ; Timestamp = DateTime.UtcNow }
                do! DbService.updatePlayer { t with Bank = max (t.Bank - prize) 0<GBT> ; Actions = Array.append [| action |] t.Actions }
            | None -> ()
            let action = { ActionId = StealActionId ; Type = Attack { AttackResult.Result = true ; AttackResult.Target = dp } ; Timestamp = DateTime.UtcNow }
            do! DbService.updatePlayer { player with Bank = player.Bank + prize ; XP = player.XP + xp ; Actions = Array.append [| action |] player.Actions }
        | false , false ->
            let embed = getResultEmbed targetName VictimRanAway
            do! DbService.updatePlayer { player with Actions = Array.append [| stealAction |] player.Actions }
            do! Messaging.sendFollowUpEmbed ctx (embed.Build())
        | false , true ->
            let embed = getResultEmbed targetName WentToPrison
            do! DbService.updatePlayer { player with Actions = Array.append [| stealAction |] player.Actions }
            do! Messaging.sendFollowUpEmbed ctx (embed.Build())
            do! Async.Sleep 2000
            let role = ctx.GetGuild().GetRole(GuildEnvironment.rolePrisoner)
            do! ctx.GetDiscordMember().GrantRoleAsync(role) |> Async.AwaitTask
    }
    if answer = "yes" then
        let targetId = uint64 split.[2]
        Game.executePlayerActionWithTargetId targetId ctx (fun attacker defender -> async {
            do! attacker
                |> checkVictimStealingCooldown defender
                >>= checkThiefCooldown
                |> handleResultWithResponse ctx handleYes
        })
    else
        async {
            let builder = DiscordInteractionResponseBuilder()
            builder.Content <- "I thought better of it"
            do! ctx.Respond InteractionResponseType.UpdateMessage builder |> Async.AwaitTask
        } |> Async.StartAsTask :> Task

type StealGame() =
    inherit ApplicationCommandModule ()

    let enforceChannel (ctx : IDiscordContext) (storeFn : IDiscordContext -> Task) =
        match ctx.GetChannel().Id with
        | id when id = GuildEnvironment.channelThievery -> storeFn ctx
        | _ ->
            task {
                let msg = $"You must go to <#{GuildEnvironment.channelThievery}> channel if you want to mug some unsuspecting doofs"
                do! Messaging.sendSimpleResponse ctx msg
            }

    [<SlashCommand("steal", "Steal some money from another player, but you might go to prison if caught")>]
    member this.Steal (ctx : InteractionContext, [<Option("target", "Who do you want to steal from?")>] target : DiscordUser) =
        enforceChannel (DiscordInteractionContext ctx) (steal target)
//        steal target (DiscordInteractionContext ctx)