@page "/"
@rendermode InteractiveServer

<PageTitle>Home</PageTitle>

<div class="main-area">

    <!-- Login Frame -->
    @if (Session == null){
        <div class="gridFrame">
            <div><h2>LOGIN</h2></div>
            <div class="loginRow">
                <div><span>username</span></div>
                <input @bind-value="userName" type="text" />
            </div>
            <div class="loginRow">
                <div><span>password</span></div>
                <input @bind-value="passWord" type="password" />
            </div>
            <div class="loginRow">
                <button @onclick="LoginSession">Login</button>
                <button @onclick="registerSession">Register</button>
            </div>
            <div>
                <span style="color: red;">@loginError</span>
            </div>
        </div>

    <!-- User Frame -->
    }else{
        <div class="gridFrame">
            <span>UserName: @Session.UserName</span><br />
        </div>
    }
    
    <!-- AI Frame -->
    <div class="gridFrame">
        <div>
            <button @onclick="pullandtrain">@button1Text</button>
            <button @onclick="predict">@button2Text</button>
        </div>
        <div>
            @foreach (stockPredictionPair cur in predictions){
                <div>
                    <h1>Symbol: @cur.Symbol</h1><br />
                @if (cur.Movement == -1){
                    <p>Sell</p>
                } else if (cur.Movement == 1){
                    <p>Buy</p>
                } else{
                    <p>Hold</p>
                }
                </div>
            }
        </div>
    </div>

</div>


@code {

    // User Stuff
    loginSession? Session = null;

    // Login Stuff
    string userName = "";
    string passWord = "";
    string loginError = "";

    List<stockPredictionPair> predictions = new List<stockPredictionPair>(){
      new stockPredictionPair(){ Symbol = "AAPL" },
      new stockPredictionPair(){ Symbol = "AAPL" },
      new stockPredictionPair(){ Symbol = "TTD" },
      new stockPredictionPair(){ Symbol = "FUN" }
    };

    async Task LoginSession(){
        string dbPrefix = $"[{userName.ToLower()}]:";                   // Set the DB prefix for the get and set
        string passwordhash = dbDriver.Get( dbPrefix + "password" );    // Pull the password hash
        if (BCrypt.Verify( passWord, passwordhash )){                   // If the password is valid
            Session = new loginSession(){
                UserName = userName.ToLower()
            };
        }else{
            loginError = "wrong password";
        }
    }

    async Task registerSession(){
        string dbPrefix = $"[{userName.ToLower()}]:";
        string passwordhash = dbDriver.Get( dbPrefix + "password" );
        if (string.IsNullOrEmpty(passwordhash)){
            dbDriver.Set( dbPrefix + "password", BCrypt.HashPassword( passWord, BCrypt.GenerateSalt() ) );
            Session = new loginSession(){
                UserName = userName.ToLower()
            };
        }else{
            loginError = "account is taken";
        }
    }

    // AI Stuff

    string button1Text = "Train AI";
    string button2Text = "Predict AI";

    async Task pullandtrain(){
        button1Text = "Do not refresh the page. The data is refreshing.";
        await Task.Delay(1);
        aiModule.TrainAI();
        button1Text = "Refresh Completed";
    }

    async Task predict(){
        button2Text = "Do not refresh the page. The data is refreshing.";
        await Task.Delay(1);
        List<Task> threadpool = new List<Task>();
        foreach(stockPredictionPair cur in predictions){
            Task thread = new Task(() => {
                cur.Movement = aiModule.PredictAI(cur.Symbol);
                Console.WriteLine("Received Signal [" + cur.Symbol + "] : " + cur.Movement);
            });
            thread.Start();
            threadpool.Add(thread);
        }
        await Task.WhenAll(threadpool);
        button2Text = "Refresh Completed";
        StateHasChanged();
        await Task.Delay(1);
    }

    // Data Types

    class stockPredictionPair {
        public string Symbol { get; set; }  = "";
        public int Movement { get; set; } = 0;
    }

    class loginSession {
        public string UserName { get; set; } = "";
    }

}