@using BLAIzor.Models
@using Radzen

@if (isEditing)
{
    <EditForm EditContext="@editContext" OnValidSubmit="@HandleValidSubmit">
        <div class="card p-4">
            <h4 class="mb-3">@TitleString</h4>

            @foreach (var group in Groups)
            {
                <h5 class="mt-4">@group.GroupName</h5>

                @for (int entryIndex = 0; entryIndex < group.EntryCount; entryIndex++)
                {
                    var entryPrefix = $"{group.GroupName}_{entryIndex}";

                    foreach (var field in group.Fields)
                    {
                        var label = $"{entryPrefix}_{field.Label}";

                        <div class="mb-3">
                            <label class="form-label">@field.Label</label>

                            @switch (field.Type?.ToLower())
                            {
                                case "textarea":
                                    <RadzenTextArea Style="width:100%"
                                                    Value="@GetValue(label)"
                                                    Change="@(args => SetValue(label, args))" />
                                    break;

                                case "number":
                                    <RadzenNumeric TValue="int"
                                                   Value="@(Convert.ToInt32(GetValue(label)))"
                                                   Change="@(args => SetValue(label, args.ToString()))" />
                                    break;

                                case "date":
                                    <RadzenDatePicker TValue="DateTime?"
                                                      Value="@GetDate(label)"
                                                      Change="@(args => SetDate(label, args))" />
                                    break;

                                case "checkbox":
                                    <RadzenCheckBox TValue="bool"
                                                    Value="@GetCheckboxValue(label)"
                                                    Change="@(args => SetCheckboxValue(label, args))" />
                                    break;

                                case "radio":
                                    <RadzenRadioButtonList TValue="int"
                                                           Value="@GetRadioValue(label)"
                                                           Change="@(args => SetRadioValue(label, args))">
                                        <Items>
                                            @foreach (var option in field.Options ?? new())
                                            {
                                                var split = option.Split(':');
                                                var text = split[0];
                                                var val = split.Length > 1 && int.TryParse(split[1], out var parsedVal) ? parsedVal : 0;
                                                <RadzenRadioButtonListItem Text="@text" Value="@val" />
                                            }
                                        </Items>
                                    </RadzenRadioButtonList>
                                    break;

                                case "select":
                                    <RadzenDropDown TValue="string"
                                                    Data="@field.Options"
                                                    Value="@GetDropdownValue(label)"
                                                    Change="@(args => SetDropdownValue(label, args?.ToString()))" />
                                    break;

                                default:
                                    <RadzenTextBox Style="width:100%"
                                                   Value="@GetValue(label)"
                                                   Change="@(args => SetValue(label, args?.ToString()))" />
                                    break;
                            }
                        </div>
                    }
                }

                @if (group.Repeatable)
                {
                    <RadzenButton Icon="add_circle"
                                  ButtonStyle="ButtonStyle.Light"
                                  Text="Add Another"
                                  Click="@(() => AddGroupEntry(group))" />
                }
            }

            <RadzenButton ButtonStyle="ButtonStyle.Primary" Text="@ButtonTextString" Type="Submit" />
        </div>
    </EditForm>
}
else
{
    <div class="card p-4">
        <h4 class="mb-3">Details</h4>
        @foreach (var kvp in formValues)
        {
            <p><strong>@kvp.Key:</strong> @kvp.Value</p>
        }
    </div>
}

<p class="mt-2">@FormSubmitResult</p>

@code {
    [Parameter] public List<FormFieldGroup> Groups { get; set; } = new();
    [Parameter] public List<string> IgnoreReflection { get; set; } = new();
    [Parameter] public EventCallback<Dictionary<string, string>> OnSubmit { get; set; }
    [Parameter] public bool isEditing { get; set; }
    [Parameter] public string TitleString { get; set; } = "Edit your details";
    [Parameter] public string ButtonTextString { get; set; } = "Submit";

    private EditContext editContext;
    private Dictionary<string, string> formValues = new();
    private Dictionary<string, DateTime?> formDates = new();
    private string FormSubmitResult = "";

    protected override void OnParametersSet()
    {
        foreach (var group in Groups)
        {
            if (group.EntryCount == 0)
            {
                group.EntryCount = 1; // Always have at least one entry
            }

            for (int i = 0; i < group.EntryCount; i++)
            {
                foreach (var field in group.Fields)
                {
                    var key = $"{group.GroupName}_{i}_{field.Label}";

                    if (!formValues.ContainsKey(key))
                    {
                        if (field.Type?.ToLower() == "radio" && field.Options?.Count > 0)
                        {
                            var defaultVal = field.Options.FirstOrDefault()?.Split(':').LastOrDefault() ?? "0";
                            formValues[key] = defaultVal;
                        }
                        else
                        {
                            formValues[key] = string.Empty;
                        }
                    }

                    if (field.Type?.ToLower() == "date" && !formDates.ContainsKey(key))
                    {
                        formDates[key] = DateTime.Today;
                    }
                }
            }
        }

        editContext = new EditContext(formValues);
    }

    private string GetValue(string label) => formValues.TryGetValue(label, out var value) ? value : "";
    private void SetValue(string label, string? value) => formValues[label] = value ?? "";

    private DateTime? GetDate(string label) => formDates.TryGetValue(label, out var date) ? date : null;
    private void SetDate(string label, DateTime? value) => formDates[label] = value;

    private string GetDropdownValue(string label) => formValues.TryGetValue(label, out var value) ? value : "";
    private void SetDropdownValue(string label, string? value) => formValues[label] = value ?? "";

    private bool GetCheckboxValue(string label) => formValues.TryGetValue(label, out var value) && bool.TryParse(value, out var result) && result;
    private void SetCheckboxValue(string label, bool? value) => formValues[label] = (value ?? false).ToString();

    private int GetRadioValue(string label) => formValues.TryGetValue(label, out var value) && int.TryParse(value, out var intValue) ? intValue : 0;
    private void SetRadioValue(string label, int? value) => formValues[label] = value?.ToString() ?? "0";

    private void AddGroupEntry(FormFieldGroup group)
    {
        group.EntryCount++;
        StateHasChanged();
    }

    private async Task HandleValidSubmit()
    {
        foreach (var dateField in formDates)
        {
            formValues[dateField.Key] = dateField.Value?.ToString("yyyy-MM-dd") ?? "";
        }

        FormSubmitResult = "Success!";
        await OnSubmit.InvokeAsync(formValues);
        isEditing = false;
    }
}