module Degenz.DbService

open System.Security.Cryptography.X509Certificates
open Degenz.Types

open System
open Npgsql.FSharp

type User = {
    Name : string
    DiscordId : uint64
    Bank : int<GBT>
    Strength : int
    Inventory : int array
}

let mapBack user : PlayerData =
    { DiscordId = user.DiscordId
      Name = user.Name
      Inventory = user.Inventory |> Array.choose (fun id -> Armory.battleItems |> Array.tryFind (fun i -> i.Id = id))
      Events = [||]
      Traits = { PlayerTraits.empty with Strength = user.Strength }
      Bank = user.Bank
}

let getPlayerEvents connStr (player : PlayerData) =
    connStr
    |> Sql.connect
    |> Sql.parameters [ "did", Sql.string (string player.DiscordId) ]
    |> Sql.query """
            WITH usr AS (SELECT id FROM "user" WHERE discord_id = @did)
            SELECT event_type, success, is_instigator, item_id, cooldown, adversary_id, adversary_name, created_at
            FROM player_event ,usr WHERE user_id = usr.id and created_at > NOW() at time zone 'utc' - INTERVAL '24 HOURS';
        """
    |> Sql.executeAsync (fun read ->
            match read.string "event_type" with
            | "Hacking" ->
                Hacking {
                    IsInstigator = read.bool "is_instigator"
                    Success = read.bool "success"
                    Adversary = { Id = read.string "adversary_id" |> uint64 ; Name = read.string "adversary_name" }
                    HackId = read.int "item_id"
                }
            | "Shielding" -> Shielding (read.int "item_id")
            | "Stealing" -> Stealing ( read.bool "is_instigator" , { Id = read.string "adversary_id" |> uint64 ; Name = read.string "adversary_name" } )
            | _ -> Imprison
            |> fun t ->
                let date = read.dateTimeOrNone "created_at" |> Option.defaultValue DateTime.UtcNow
                { Type = t ; Cooldown = read.int "cooldown" * 1<mins> ; Timestamp = date }
        )
    |> Async.AwaitTask

let tryFindPlayer connStr (discordId : uint64) =
    async {
        try
        let! user =
//            use cert = new X509Certificate2("~/Downloads/ca-certificate.crt")
//            (Uri connStr)
//            |> Sql.fromUriToConfig
//            |> Sql.requireSslMode
//            |> Sql.formatConnectionString
//            |> Sql.clientCertificate cert
            connStr
            |> Sql.connect
            |> Sql.parameters [ "did", Sql.string (string discordId) ]
            |> Sql.query """
                    SELECT discord_id, display_name, gbt, strength, inventory FROM "user" WHERE discord_id = @did
                """
            |> Sql.executeAsync (fun read ->
                {
                    DiscordId = read.string "discord_id" |> uint64
                    Name = read.string "display_name"
                    Bank = read.int "gbt" * 1<GBT>
                    Strength = read.int "strength"
                    Inventory = read.intArray "inventory"
                })
            |> Async.AwaitTask
        match List.tryHead user with
        | None -> return None
        | Some u ->
            let player = mapBack u
            let! events = getPlayerEvents connStr player
            return Some { player with Events = events |> List.toArray }
        with e ->
            printfn $"Got an error{e.Message}"
            return None
    }

let updatePlayer connStr (player : PlayerData) =
    connStr
    |> Sql.connect
    |> Sql.parameters [
        "did", Sql.string (string player.DiscordId)
        "gbt", Sql.int (int player.Bank)
        "str", Sql.int (int player.Traits.Strength)
        "inv", Sql.intArray (player.Inventory |> Array.map (fun i -> i.Id))
    ]
    |> Sql.query """
           UPDATE "user" SET gbt = @gbt, strength = @str, inventory = @inv
           WHERE discord_id = @did
       """
    |> Sql.executeNonQueryAsync
    |> Async.AwaitTask

let addAchievement connStr (did : uint64) (achievement : string) =
    connStr
    |> Sql.connect
    |> Sql.parameters
        [ ( "did" , Sql.string (string did) )
          ( "symbol", Sql.string achievement ) ]
    |> Sql.query """
            WITH ach AS (SELECT id FROM achievement WHERE symbol = cast(@symbol AS achievement_symbol_enum)),
                 usr AS (SELECT id FROM "user" WHERE discord_id = @did)
            INSERT INTO user_achievements_achievement (user_id, achievement_id) SELECT usr.id, ach.id FROM usr, ach;
       """
    |> Sql.executeNonQueryAsync
    |> Async.AwaitTask

let checkHasAchievement connStr (did : uint64) (achievement : string) = async {
    let! result =
        connStr
        |> Sql.connect
        |> Sql.parameters
            [ ( "did" , Sql.string (string did) )
              ( "symbol", Sql.string achievement ) ]
        |> Sql.query """
                WITH ach AS (SELECT id FROM achievement WHERE symbol = cast(@symbol AS achievement_symbol_enum)),
                     usr AS (SELECT id FROM "user" WHERE discord_id = @did)
                SELECT achievement_id FROM user_achievements_achievement, ach, usr WHERE user_id = usr.id and achievement_id = ach.id;
            """
        |> Sql.executeAsync (fun read -> read.int "achievement_id")
        |> Async.AwaitTask
    return List.isEmpty result |> not
}

let removeShieldEvent connStr (did : uint64) shieldId =
    connStr
    |> Sql.connect
    |> Sql.parameters
        [ ( "did" , Sql.string (string did) )
          ( "shield_id", Sql.int shieldId ) ]
    |> Sql.query """
            WITH usr AS (SELECT id FROM "user" WHERE discord_id = @did)
            DELETE FROM player_event USING usr WHERE user_id = usr.id and event_type = 'Shielding' and item_id = @shield_id
        """
    |> Sql.executeNonQueryAsync
    |> Async.AwaitTask

let addPlayerEvent connStr (did : uint64) (playerEvent : PlayerEvent) =
    let sqlParams , query =
        match playerEvent.Type with
        | Hacking h ->
            [
                ( "did", Sql.string (string did) )
                ( "success" , Sql.bool h.Success )
                ( "is_instigator", Sql.bool h.IsInstigator )
                ( "item_id", Sql.int h.HackId )
                ( "cooldown", Sql.int (int playerEvent.Cooldown) )
                ( "adversary_id", Sql.string (string h.Adversary.Id) )
                ( "adversary_name", Sql.string (string h.Adversary.Name) )
            ] ,
            """
                WITH usr AS (SELECT id FROM "user" WHERE discord_id = @did)
                INSERT INTO player_event (event_type, success, is_instigator, item_id, cooldown, adversary_id, adversary_name, user_id)
                SELECT 'Hacking', @success, @is_instigator, @item_id, @cooldown, @adversary_id, @adversary_name, usr.id FROM usr
            """
        | Shielding id ->
            [
                ( "did" , Sql.string (string did) )
                ( "item_id", Sql.int id )
                ( "cooldown", Sql.int (int playerEvent.Cooldown) )
            ] ,
            """
                WITH usr AS (SELECT id FROM "user" WHERE discord_id = @did)
                INSERT INTO player_event (event_type, item_id, cooldown, user_id)
                SELECT 'Shielding', @item_id, @cooldown, usr.id FROM usr
            """
        | Stealing(instigator, victim) ->
            [
                ( "did" , Sql.string (string did) )
                ( "is_instigator", Sql.bool instigator )
                ( "adversary_id", Sql.string (string victim.Id) )
                ( "adversary_name", Sql.string (string victim.Name) )
                ( "cooldown", Sql.int (int playerEvent.Cooldown) )
            ] ,
            """
                WITH usr AS (SELECT id FROM "user" WHERE discord_id = @did)
                INSERT INTO player_event (event_type, is_instigator, adversary_id, adversary_name, cooldown, user_id)
                SELECT 'Stealing', @is_instigator, @adversary_id, @adversary_name, @cooldown, usr.id FROM usr
            """
        | Imprison ->
            [
                ( "did" , Sql.string (string did) )
                ( "cooldown", Sql.int (int playerEvent.Cooldown) )
            ] ,
            """
                WITH usr AS (SELECT id FROM "user" WHERE discord_id = @did)
                INSERT INTO player_event (event_type, cooldown, user_id)
                SELECT 'Imprison', @cooldown, usr.id FROM usr
            """
    connStr
    |> Sql.connect
    |> Sql.parameters sqlParams
    |> Sql.query query
    |> Sql.executeNonQueryAsync
    |> Async.AwaitTask