@page "/"
@using Controllers.Payment
@using Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments
@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">
            <div><h2>Account</h2></div>
            <span>UserName: @Session.UserName</span><br />
            <div>
                <span>Money: $@Session.Money</span>
            </div>
        </div>

    <!-- Tool Frame -->
        <div class="gridFrame">
            <div>
                <div><h2>Actions</h2></div>
                <div>
                    <input placeholder="Stock Symbol [NVDA]" @bind="addStockSymbol" />
                    <button @onclick="addStock">Add To Tracked Stocks</button>
                </div>
                <span>@resultError</span>
            </div>
        </div>
    }
    
    <!-- AI Frame -->
    @if (Session != null){
        <div>
            <!-- Tracked Stocks -->
            <div class="gridFrame">
                <div>
                    <h2>Current Signal</h2>
                </div>
                @foreach (Stock cur in Session.TrackedStocks){
                    <div class="signalBlock">
                        <p style="text-align: center; font-weight: bold;">@cur.Symbol</p>
                        <p>AI Predicted Score: @cur.Score</p>
                        <button @onclick="async () => {await removeStock(cur);}">Remove</button>
                    </div>
                }
            </div>
            <!-- Trade History -->
            <div class="gridFrame">
                <div>
                    <h2>Trade History</h2>
                </div>
                @foreach (PurchasedStock cur in Session.TradeHistory){
                    <div class="signalBlock">
                        <p style="text-align: center; font-weight: bold;">@cur.Symbol</p>
                        <p>Purchased Quantity: @cur.Quantity</p>
                        <p>Purchased Price: @cur.PurchasePrice</p>
                        <p>Sell Price: @cur.PurchasePrice</p>
                    </div>
                }
            </div>
        </div>
    }

</div>

@code {

    /////////////////////////////////////////////////////////////////////////////////////////////
    ///                         Code Region
    /////////////////////////////////////////////////////////////////////////////////////////////

    loginSession? Session = null;
    string resultError = "";
    



    // Login Stuff
    string userName = "";
    string passWord = "";
    string loginError = "";
    async Task LoginSession(){
        string dbPrefix = $"[{userName.ToLower()}]:";

        // Check if user already exists
        string passwordhash = dbDriver.Get( dbPrefix + "password" );
        if (string.IsNullOrEmpty(passwordhash)){
            loginError = "no account found with that username";
            return;
        }

        // Check the password is valid
        if (!BCrypt.Verify( passWord, passwordhash )){
            loginError = "wrong password";
            return;
        }

        // Load the users account
        List<PurchasedStock>? history = JsonConvert.DeserializeObject<List<PurchasedStock>>( dbDriver.Get( dbPrefix + "history" ) );
        List<Stock>? stocks = JsonConvert.DeserializeObject<List<Stock>>( dbDriver.Get( dbPrefix + "watched" ) );
        bool moneyLoaded = float.TryParse(dbDriver.Get( dbPrefix + "money" ), out float moneyResult);
        Session = new loginSession(){
            UserName = userName.ToLower(),
            TradeHistory = history != null ? history : new List<PurchasedStock>(),
            TrackedStocks = stocks != null ? stocks : new List<Stock>(),
            Money = moneyLoaded ? moneyResult : 1000
        };
    }

    async Task registerSession(){
        string dbPrefix = $"[{userName.ToLower()}]:";
        
        // Check if user already exists
        string passwordhash = dbDriver.Get( dbPrefix + "password" );
        if (!string.IsNullOrEmpty(passwordhash)){
            loginError = "account is taken";
            return;
        }

        // Create User Object on the database
        dbDriver.Set( dbPrefix + "password", BCrypt.HashPassword( passWord, BCrypt.GenerateSalt() ) );
        dbDriver.Set( dbPrefix + "money", "1000" );
        Session = new loginSession(){
            UserName = userName.ToLower(),
            TradeHistory = new List<PurchasedStock>(),
            TrackedStocks = new List<Stock>(),
            Money = 1000
        };

        // Add the users to a global table for automation
        List<string>? Users = JsonConvert.DeserializeObject<List<string>>( dbDriver.Get( "Users" ) );
        List<string> verifiedUsers = Users != null ? Users : new List<string>();
        verifiedUsers.Add(userName.ToLower());
        dbDriver.Set( "Users", JsonConvert.SerializeObject(verifiedUsers) );
    }




    string addStockSymbol = "";
    async Task addStock(){

        // Make sure a session exists
        if (Session == null){
            return;
        }

        // Add a tracked stock to the users account
        Session.TrackedStocks.Add(new Stock(){
            Symbol = addStockSymbol.ToUpper()
        });

        // Save the users account
        string dbPrefix = $"[{userName.ToLower()}]:"; 
        dbDriver.Set(dbPrefix + "watched", JsonConvert.SerializeObject(Session.TrackedStocks) );
    }




    async Task removeStock(Stock stock){

        // Make sure a session exists
        if (Session == null){
            return;
        }
        
        // Remove the stock
        Session.TrackedStocks.Remove(stock);

        // Save the users account
        string dbPrefix = $"[{userName.ToLower()}]:"; 
        dbDriver.Set(dbPrefix + "watched", JsonConvert.SerializeObject(Session.TrackedStocks) );
    }
}