@inject IMRBService mrbService
@inject ISnackbar snackbar

<MudDialog>
    <DialogContent>
        <MudPaper Class="p-2">
            <MudForm @bind-Errors="@errors">
                <MudSelect T="string"
                           Label="Action"
                           Required="true"
                           RequiredError="You must select an action!"
                           @bind-Value="@mrbAction.Action"
                           Text="@mrbAction.Action">
                    <MudSelectItem Value="@("Block")" />
                    <MudSelectItem Value="@("Convert")" />
                    <MudSelectItem Value="@("Other")" />
                    <MudSelectItem Value="@("Recall")" />
                    <MudSelectItem Value="@("Scrap")" />
                    <MudSelectItem Value="@("Unblock")" />
                    <MudSelectItem Value="@("Waiver")" />
                </MudSelect>
                <MudTextField T="string"
                              Label="Customer / Vendor"
                              Required="true"
                              RequiredError="Customer / Vendor required!"
                              @bind-Value="@mrbAction.Customer"
                              Text="@mrbAction.Customer" />
                <MudTextField T="int"
                              Label="Qty"
                              Required="true"
                              RequiredError="You must supply a quantity!"
                              @bind-Value=mrbAction.Quantity
                              Text="@mrbAction.Quantity.ToString()" />
                <MudTextField T="string"
                              Label="Part Number"
                              Required="true"
                              RequiredError="Part number required!"
                              @bind-Value="@mrbAction.PartNumber"
                              Text="@mrbAction.PartNumber" />
                <MudTextField T="string"
                              Label="Batch Number / Lot Number"
                              Required="true"
                              RequiredError="Batch number / Lot number required!"
                              @bind-Value="@mrbAction.LotNumber"
                              Text="@mrbAction.LotNumber" />
            </MudForm>
        </MudPaper>
    </DialogContent>
    <DialogActions>
        <MudButton Variant="Variant.Filled"
                   Color="Color.Tertiary"
                   Class="m1-auto"
                   OnClick=SaveMRBAction>
            @if (processingSave) {
                <MudProgressCircular Class="m-1" Size="Size.Small" Indeterminate="true" />
                <MudText>Processing</MudText>
            } else {
                <MudText>Save</MudText>
            }
        </MudButton>
        @if (mrbAction is not null && mrbAction.ActionID > 0) {
            <MudButton Variant="Variant.Filled"
                       Color="Color.Secondary"
                       Disabled="@(mrbAction is null || (mrbAction is not null && mrbAction.ActionID <= 0))"
                       Class="m1-auto"
                       OnClick=DeleteMRBAction>
                @if (processingDelete) {
                    <MudProgressCircular Class="m-1" Size="Size.Small" Indeterminate="true" />
                    <MudText>Processing</MudText>
                } else {
                    <MudText>Delete</MudText>
                }
            </MudButton>
        }
        <MudButton Variant="Variant.Filled"
                   Class="grey text-black m1-auto"
                   OnClick=Cancel>
            Cancel
        </MudButton>
    </DialogActions>
</MudDialog>

@code {
    [CascadingParameter] MudDialogInstance MudDialog { get; set; }

    [Parameter]
    public MRBAction mrbAction { get; set; }

    private bool isVisible { get; set; }
    private string[] errors = { };
    private bool processingSave = false;
    private bool processingDelete = false;

    protected override async Task OnParametersSetAsync() {
        isVisible = true;

        if (mrbAction is null) {
            mrbAction = new() {
                    Action = "",
                    Customer = "",
                    Quantity = 0,
                    PartNumber = "",
                    LotNumber = "",
                    MRBNumber = 0
                };
        }

        StateHasChanged();
    }

    private bool FormIsValid() {
        bool actionIsValid = mrbAction.Action.Equals("Block") || mrbAction.Action.Equals("Convert") ||
            mrbAction.Action.Equals("Other") || mrbAction.Action.Equals("Recall") || mrbAction.Action.Equals("Scrap") ||
            mrbAction.Action.Equals("Unblock") || mrbAction.Action.Equals("Waiver");
        return actionIsValid && !string.IsNullOrWhiteSpace(mrbAction.Customer) &&
            !string.IsNullOrWhiteSpace(mrbAction.PartNumber) &&
            !string.IsNullOrWhiteSpace(mrbAction.LotNumber);
    }

    private async void SaveMRBAction() {
        processingSave = true;
        try {
            if (!FormIsValid()) throw new Exception("You must complete the form before saving!");

            if (mrbAction.MRBNumber > 0) {
                if (mrbAction.ActionID <= 0) {
                    await mrbService.CreateMRBAction(mrbAction);
                    snackbar.Add("MRB action created", Severity.Success);
                } else {
                    await mrbService.UpdateMRBAction(mrbAction);
                    snackbar.Add("MRB action updated", Severity.Success);
                }
            } else {
                snackbar.Add("MRB action saved", Severity.Success);
            }

            MudDialog.Close(DialogResult.Ok(mrbAction));
        } catch (Exception ex) {
            snackbar.Add(ex.Message, Severity.Error);
        }
        processingSave = false;
    }

    private async void DeleteMRBAction() {
        processingDelete = true;
        try {
            if (mrbAction is null) throw new Exception("MRB action cannot be null!");
            if (mrbAction.ActionID <= 0)
                throw new Exception("You cannot delete an action before creating it!");
            if (mrbAction.MRBNumber <= 0)
                throw new Exception("Invalid MRB number!");

            await mrbService.DeleteMRBAction(mrbAction);
            snackbar.Add("MRB action successfully deleted", Severity.Success);

            MudDialog.Close(DialogResult.Ok<MRBAction>(null));
        } catch (Exception ex) {
            snackbar.Add(ex.Message, Severity.Error);
        }
        processingDelete = false;
    }

    private void Cancel() {
        MudDialog.Cancel();
    }
}