@page "/Teacher/TeacherStudent"
@inject Blazored.SessionStorage.ISessionStorageService sessionStorage
@inject IJSRuntime jsRuntime
@inject NavigationManager NavManager
@inherits Admin.ListBase;
@using System.ComponentModel.DataAnnotations
@using Syncfusion.Blazor.Grids;
@using Syncfusion.Blazor.Buttons;
@using Syncfusion.Blazor.Spinner;
@using Syncfusion.Blazor.Navigations;
@using Syncfusion.Blazor.Popups;
@using Syncfusion.Blazor.DropDowns
@using BlazorApp.Helper
@using BWPMModels;

<div class="container-fluid">
    <div class="row">
        <div class="col-md-2">
            <div class="card">
                <h6 class="card-header">
                    Klasse
                </h6>
                <div class="card-body">
                    <SfDropDownList @bind-Value="@KlasseID" TValue="string" TItem="Klasse" Placeholder="Klasse" DataSource="@Klasse">
                        <DropDownListFieldSettings Value="ID" Text="bezeichnung"></DropDownListFieldSettings>
                        <DropDownListEvents TValue="string" TItem="Klasse" ValueChange="ChangeKlasse"></DropDownListEvents>
                    </SfDropDownList>
                </div>
            </div>
            <br />
            <div class="card">
                <h6 class="card-header">
                    Schüler
                </h6>
                <div class="card-body">
                    <RadzenListBox @bind-Value=@SchuelerID Data=@schuelerliste TextProperty="bezeichnung" ValueProperty="id" Style="height:350px" Change=@(args => SchuelerChange(args, "schuelerlist")) />
                </div>
            </div>
        </div>
        <div class="col-md-10">
            <div class="card">
                <h6 class="card-header">
                    Schüler
                </h6>
                <div class="card-body">
                    <div class="row">
                        <SfButton IsPrimary="true" OnClick="@(() => NewClick())">Neuer Schüler</SfButton>&nbsp;
                        <SfButton Disabled="@FieldDisabled" IsPrimary="true" OnClick="@(() => SaveClick())">Änderungen speichern</SfButton>&nbsp;
                        <SfButton Disabled="@FieldDisabled" IsPrimary="true" OnClick="@(() => DeleteClick())">Schüler löschen</SfButton>

                    </div>
                    <hr />
                    <EditForm Model="_schueler" OnValidSubmit="@Submit" OnInvalidSubmit="@InvalidSubmit">
                        <input type="hidden" id="hiddenschuelerid" name="hiddenschuelerid" @bind="_schueler.ID">
                        <div class="row">
                            <div class="col-md-1">
                                @*<label for="Name" class="col-2 col-form-label">Name</label>*@
                                Name
                            </div>
                            <div class="col-md-3">
                                <InputText id="Name" class="form-control" @bind-Value="_schueler.name" placeholder="Nachname" disabled="@FieldDisabled" />
                                <ValidationMessage For="@(() => _schueler.name)" />
                            </div>
                            <div class="col-md-1">
                                @*<label for="Name" class="col-2 col-form-label">Name</label>*@
                                Vorname
                            </div>
                            <div class="col-md-3">
                                @*<label for="Vorname" class="col-2 col-form-label">Name</label>*@
                                <InputText id="Vorname" class="form-control" @bind-Value="_schueler.vorname" placeholder="Vorname" disabled="@FieldDisabled" />
                                <ValidationMessage For="@(() => _schueler.name)" />
                            </div>
                            <div class="col-md-1">
                                @*<label for="Name" class="col-2 col-form-label">Name</label>*@
                                Bemerkung
                            </div>
                            <div class="col-md-3">
                                <InputText id="Bemerkung" class="form-control" @bind-Value="_schueler.bemerkung" placeholder="Bemerkung" disabled="@FieldDisabled" />
                            </div>
                        </div>
                        <div class="row">
                            <div class="col-md-1">
                                Klasse
                            </div>
                            <div class="col-md-3">
                                <SfDropDownList @bind-Value="@SchuelerklasseID" TValue="string" TItem="Klasse" Placeholder="Klasse" DataSource="@Schuelerklasse" Enabled="@DropDownEnabled">
                                    <DropDownListFieldSettings Value="ID" Text="bezeichnung"></DropDownListFieldSettings>
                                </SfDropDownList>
                            </div>
                            <div class="col-md-1">
                                Typ
                            </div>
                            <div class="col-md-3">
                                <SfDropDownList @bind-Value="@KlasseTypID" TValue="string" TItem="Klassentyp" Placeholder="Klassentyp" DataSource="@klassentyp" Enabled="@DropDownEnabled">
                                    <DropDownListFieldSettings Value="ID" Text="bezeichnung"></DropDownListFieldSettings>
                                </SfDropDownList>
                            </div>
                            <div class="col-md-1">
                                leer
                            </div>
                            <div class="col-md-3">
                                das ist noch leer
                            </div>

                        </div>>

                    </EditForm>
                </div>

            </div>
            <div class="card">
                <h6 class="card-header">
                    Berufe / Berfufswünsche
                </h6>
                <div class="card-body">
                    <div class="row">
                        <div class="col-md-4">
                            <SfListBox TValue="string[]" DataSource="@Berufe" TItem="Beruf" Height="350px">
                                <ListBoxFieldSettings Text="bezeichnung" Value="Id" />
                                <ListBoxSelectionSettings Mode="Syncfusion.Blazor.DropDowns.SelectionMode.Single" ShowCheckbox="false"></ListBoxSelectionSettings>
                            </SfListBox>
                        </div>
                        <div class="col-md-8">
                            <SfGrid DataSource="@GridData" @ref="Grid" AllowPaging="true" AllowSorting="true" Toolbar="@(new List<string>() { "Edit", "Delete" })">
                                <GridPageSettings PageCount="5" PageSizes="true"></GridPageSettings>
                                <GridEditSettings AllowAdding="true" AllowDeleting="false" AllowEditing="true" Mode="EditMode.Dialog"></GridEditSettings>
                                <GridEvents OnActionBegin="OnBeginHandler" OnActionComplete="OnCompletedHandler" TValue="SchuelerBeruf" OnDataBound="RowDataBoundHandler"></GridEvents>
                                <GridColumns>
                                    <GridColumn Type="ColumnType.CheckBox" AllowFiltering="false" AllowSorting="false" Width="60"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.ID) HeaderText="Id" IsPrimaryKey="true" AllowAdding="false" Visible="false" Width="60"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.schuelerID) HeaderText="Schuelerid" Width="100" Visible="false"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.berufID) HeaderText="Berufid" Width="100" Visible="true"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.bemerkung) HeaderText="Bemerkung" Width="100" Visible="true"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.prioritaet) HeaderText="Prioritaet" Width="100" Visible="true"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.aktiv) HeaderText="Aktiv" Width="100" Visible="false" DisplayAsCheckBox="true"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.erstellt_am) HeaderText="Erstellt_am" Width="100" Visible="false" Format="d" Type="ColumnType.Date"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.mutiert_am) HeaderText="Mutiert_am" Width="100" Visible="false" Format="d" Type="ColumnType.Date"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.mutierer) HeaderText="Mutierer" Width="100" Visible="false"></GridColumn>

                                    <GridColumn Field=@nameof(SchuelerBeruf.mandantnr) HeaderText="Mandantnr" Width="100" Visible="false"></GridColumn>
                                </GridColumns>
                            </SfGrid>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<SfDialog Width="350px" IsModal="true" @bind-Visible="@ShowDeleteConfirmation">
    <DialogTemplates>
        <Header>Schüler löschen? </Header>
        <Content>Möchten Sie den Schüler '@_schueler.name @_schueler.vorname' löschen?</Content>

    </DialogTemplates>
    <DialogButtons>
        <DialogButton Content="Ja" IsPrimary="true" OnClick="@DeleteConfirmed" />
        <DialogButton Content="Nein" OnClick="@AbortDelete" />
    </DialogButtons>
</SfDialog>


    @code {
    public bool ShowDeleteConfirmation { get; set; } = false;
    protected ElementReference ToFocus;
    public int lehrerID = 0;
    public int hiddenschuelerid = 0;
    public string KlasseID = "0";
    public string SchuelerklasseID = "0";
    public string KlasseTypID = "0";
    public string userid;
    public bool FieldDisabled = true;
    public bool DropDownEnabled = false;
    public List<BWPMModels.Klasse> Klasse { get; set; }
    public List<BWPMModels.Klasse> Schuelerklasse { get; set; }
    public List<BWPMModels.Klassentyp> klassentyp { get; set; } = BlazorApp.Controller.KlassentypController.GetAllAktiveData();
    public List<BWPMModels.Schueler> Schueler { get; set; }
    private Schueler _schueler { get; set; } = new BWPMModels.Schueler();
    public List<BWPMModels.Beruf> Berufe { get; set; } = BlazorApp.Controller.BerufController.GetBerufsangebot();

    public List<Schuelerlist> schuelerliste = new List<Schuelerlist>();
    public int SchuelerID;

    public class Schuelerlist
    {
        public int id { get; set; }
        public string bezeichnung { get; set; }
    }

    //--------------------------------------
    //Schülerberuf / beruf
    //--------------------------------------
    SfGrid<SchuelerBeruf> Grid { get; set; }
    public List<BWPMModels.SchuelerBeruf> GridData { get; set; }
    public bool ContinuePaging = true;
    public bool InitialRender { get; set; }
    public int Value = 0; // consider that value your querystring contains
    public int foundrow = 0;
    public bool Initial { get; set; } = true;

    protected override async Task OnInitializedAsync()
    {
        lehrerID = await sessionStorage.GetItemAsync<int>("LehrerID");
        Klasse = BlazorApp.Controller.KlasseController.GetByLehrerID(Convert.ToInt32(lehrerID));
        KlasseID = Klasse[0].ID.ToString();
        Schuelerklasse = BlazorApp.Controller.KlasseController.GetByLehrerID(Convert.ToInt32(lehrerID));
        SchuelerklasseID = Schuelerklasse[0].ID.ToString();
        KlasseTypID = klassentyp[0].ID.ToString();

    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender != true) { return; };
        userid = await sessionStorage.GetItemAsync<string>("UserID");
        if (userid == null)
        {
            var authState = await authenticationStateTask;
            userid = authState.User.Claims.FirstOrDefault().Value;
            var user = authState.User;

        }
    }
    //----------------------------------------------------------
    //Klassenliste / Schuelerliste
    //----------------------------------------------------------
    public void ChangeKlasse(Syncfusion.Blazor.DropDowns.ChangeEventArgs<string, Klasse> args)
    {

        UpdateSchulerliste();
    }

    public void UpdateSchulerliste()
    {
        Schueler = BlazorApp.Controller.SchuelerController.GetByKlasseID(Convert.ToInt32(KlasseID));
        schuelerliste.Clear();
        int newschuelerid = 0;
        bool found = false;
        foreach (BWPMModels.Schueler item in Schueler)
        {

            Schuelerlist sl = new Schuelerlist();
            sl.id = item.ID;
            if (newschuelerid == 0) { newschuelerid = sl.id; };
            if (SchuelerID == sl.id) { found = true; }
            sl.bezeichnung = item.name + " " + item.vorname;
            schuelerliste.Add(sl);
        };
        if (found != true)
        {
            FieldDisabled = true;
            DropDownEnabled = false;
            SchuelerID = -1;
            SchuelerID = newschuelerid;
            if (schuelerliste.Count > 0) { SchuelerSelected(); }
        }

    }
    private void SchuelerChange(object value, string name)
    {
        var str = value is IEnumerable<object> ? string.Join(", ", (IEnumerable<object>)value) : value;
        SchuelerSelected();

    }
    private void SchuelerSelected()
    {
        Schueler = BlazorApp.Controller.SchuelerController.GetByID(Convert.ToInt32(SchuelerID));
        _schueler = Schueler.First<BWPMModels.Schueler>();
        SchuelerklasseID = _schueler.klasseID.ToString();
        KlasseTypID = _schueler.klassemtypID.ToString();
        FieldDisabled = false;
        DropDownEnabled = true;

    }


    //----------------------------------------------------------
    //Schüler-Formular
    //----------------------------------------------------------

    public void Submit()
    {
        BlazorApp.Controller.SchuelerController.PUT(_schueler);
    }
    public void InvalidSubmit()
    {

    }



    private void SaveClick()
    {
        Schueler _tmpschueler = new BWPMModels.Schueler();
        _tmpschueler = BlazorApp.Controller.SchuelerController.GetByID(_schueler.ID).First<BWPMModels.Schueler>();
        _tmpschueler.name = _schueler.name;
        _tmpschueler.vorname = _schueler.vorname;
        _tmpschueler.bemerkung = _schueler.bemerkung;
        _tmpschueler.klasseID = Convert.ToInt32(SchuelerklasseID);
        _tmpschueler.klassemtypID = Convert.ToInt32(KlasseTypID);
        BlazorApp.Controller.SchuelerController.PUT(_tmpschueler);
        UpdateSchulerliste();

    }
    private void NewClick()
    {
        int schuelerid = 0;
        BWPMModels.Schueler schuelerdata = new Schueler();
        schuelerdata.aktiv = true;
        schuelerdata.erstellt_am = DateTime.Now;
        schuelerdata.mutiert_am = DateTime.Now;
        schuelerdata.mutierer = userid;
        schuelerdata.name = "Neuer Schüler";
        schuelerdata.vorname = "";
        schuelerdata.bemerkung = "";
        schuelerdata.klasseID = Convert.ToInt32(KlasseID);
        schuelerdata.klassemtypID = Convert.ToInt32(KlasseTypID);
        schuelerid = BlazorApp.Controller.SchuelerController.POST(schuelerdata);
        FieldDisabled = false;

        DropDownEnabled = true;
        UpdateSchulerliste();
        SchuelerID = schuelerid;
        SchuelerSelected();
        jsRuntime.InvokeVoidAsync("SetFocusToElement", ToFocus);

    }
    private void DeleteClick()
    {
        ShowDeleteConfirmation = true;
    }

    private void DeleteConfirmed()
    {
        _schueler.aktiv = false;
        _schueler.mutierer = userid;
        _schueler.mutiert_am = DateTime.Now;
        BlazorApp.Controller.SchuelerController.PUT(_schueler);
        BlazorApp.Controller.SchuelerBerufController.DeleteBerufswunsch(_schueler.ID, userid);
        ShowDeleteConfirmation = false;
        UpdateSchulerliste();
    }

    private void AbortDelete()
    {
        ShowDeleteConfirmation = false;
    }

    //--------------------------------------
    //SchülerBeruf / Beruf
    //--------------------------------------
    private async Task OnBeginHandler(ActionEventArgs<BWPMModels.SchuelerBeruf> Args)

    {
        if (Args.RequestType == Syncfusion.Blazor.Grids.Action.Save)
        {
            if (Args.Action == "Add")
            {

                Args.Data.erstellt_am = DateTime.Now;
                Args.Data.mutierer = userid;
                Args.Data.mutiert_am = DateTime.Now;
                Args.Data.aktiv = true;
                Args.Data.ID = BlazorApp.Controller.SchuelerBerufController.POST(Args.Data);
                Value = Args.Data.ID;
            }
            else
            {
                Args.Data.mutierer = userid.ToString();
                Args.Data.mutiert_am = DateTime.Now;
                BlazorApp.Controller.SchuelerBerufController.PUT(Args.Data);
            }
        }
    }

    public async Task OnCompletedHandler(ActionEventArgs<BWPMModels.SchuelerBeruf> Args)

    {
        if (Args.RequestType == Syncfusion.Blazor.Grids.Action.Save)
        {
            await Grid.SetRowData(Args.Data.ID, Args.Data);
            double xx = 0;
            Value = Args.Data.ID;
            xx = await DataHandler();
            await Grid.SelectRow(xx);

        }
    }
    public async void RowDataBoundHandler(BeforeDataBoundArgs<BWPMModels.SchuelerBeruf> args)
    {
        if (!Initial)
        {
            //await Task.Delay(100);
            //var Idx = await this.Grid.GetRowIndexByPrimaryKey(Convert.ToDouble(Value));   //get index value
            //this.Grid.SelectRow(Convert.ToDouble(Idx));
        }
        Initial = false;
    }

    public async Task<double> DataHandler()
    {
        var PageCount = (GridData.Count / Grid.PageSettings.PageSize) + 1;
        ContinuePaging = true;
        var CurrentPage = 1;
        Grid.Refresh();
        await Grid.GoToPage(1);

        for (int i = 1; i <= PageCount; i++)

        {
            List<SchuelerBeruf> Rows = await Grid.GetCurrentViewRecords(); // returns the current view data
            for (int j = 0; j < Grid.PageSettings.PageSize; j++)
            {
                if (j < Rows.Count && Rows[j].ID == Value)
                {
                    foundrow = j;

                    ContinuePaging = false; // prevent the default navigation
                    break;
                }
            }
            if (ContinuePaging)
            {
                if (i >= PageCount)
                {
                    i = 0;
                }
                await Grid.GoToPage(i + 1);

            }
            else
            {
                return foundrow;
            }
        }
        return foundrow;
    }
    }