@page "/config"
@inject AccessQueuePlayground.Services.AccessQueueManager QueueManager
@using BlazorBootstrap

<h3>Access Queue Configuration</h3>

<EditForm Model="config" OnValidSubmit="HandleValidSubmit">
	<DataAnnotationsValidator />
	<ValidationSummary />
	<div class="mb-3">
		<label for="capacityLimit">Capacity Limit</label>
		<TextInput Id="capacityLimit" @bind-Value="config.CapacityLimit" Type="TextInputType.Number" />
		@if (!isCapacityLimitValid)
		{
			<div class="text-danger">Please enter a positive integer.</div>
		}
	</div>
	<div class="mb-3">
		<label for="activitySeconds">Activity Seconds</label>
		<TextInput Id="activitySeconds" @bind-Value="config.ActivitySeconds" Type="TextInputType.Number" />
		@if (!isActivitySecondsValid)
		{
			<div class="text-danger">Please enter a positive integer.</div>
		}
	</div>
	<div class="mb-3">
		<label for="expirationSeconds">Expiration Seconds</label>
		<TextInput Id="expirationSeconds" @bind-Value="config.ExpirationSeconds" Type="TextInputType.Number" />
		@if (!isExpirationSecondsValid)
		{
			<div class="text-danger">Please enter a positive integer.</div>
		}
	</div>
	<div class="mb-3">
		<label for="cacheMillis">Cache Milliseconds</label>
		<TextInput Id="cacheMillis" @bind-Value="config.CacheMilliseconds" Type="TextInputType.Number" />
		@if (!isCacheMillisValid)
		{
			<div class="text-danger">Please enter a positive integer or zero.</div>
		}
	</div>
	<div class="mb-3">
		<Switch Id="rollingExpiration" @bind-Value="config.RollingExpiration" Label="Rolling Expiration" />
	</div>
	<Button Type="ButtonType.Submit" Color="ButtonColor.Primary">Save</Button>
	@if (successMessage != null)
	{
		<Alert Color="AlertColor.Success" Class="mt-3">@successMessage</Alert>
	}
</EditForm>

@code {
	private ConfigModel config = new();
	private bool isCapacityLimitValid = true;
	private bool isActivitySecondsValid = true;
	private bool isExpirationSecondsValid = true;
	private bool isCacheMillisValid = true;
	private string? successMessage;

	protected override void OnInitialized()
	{
		var current = QueueManager.GetConfig();
		config = new ConfigModel
			{
				ActivitySeconds = (current.ActivitySeconds ?? 0).ToString(),
				CapacityLimit = (current.CapacityLimit ?? 0).ToString(),
				ExpirationSeconds = (current.ExpirationSeconds ?? 0).ToString(),
				CacheMilliseconds = (current.CacheMilliseconds ?? 0).ToString(),
				RollingExpiration = current.RollingExpiration ?? false
			};
		ValidateInputs();
	}

	private bool IsFormValid => isCapacityLimitValid && isActivitySecondsValid && isExpirationSecondsValid && isCacheMillisValid;

	private void ValidateInputs()
	{
		isCapacityLimitValid = int.TryParse(config.CapacityLimit, out var cap) && cap > 0;
		isActivitySecondsValid = int.TryParse(config.ActivitySeconds, out var act) && act > 0;
		isExpirationSecondsValid = int.TryParse(config.ExpirationSeconds, out var exp) && exp > 0;
		isCacheMillisValid = int.TryParse(config.CacheMilliseconds, out var cache) && cache >= 0;
	}

	private async Task HandleValidSubmit()
	{
		successMessage = null;
		ValidateInputs();
		if (!IsFormValid)
			return;
		await Task.Run(() => QueueManager.UpdateConfig(new ()
		{
			ActivitySeconds = int.Parse(config.ActivitySeconds),
			CapacityLimit = int.Parse(config.CapacityLimit),
			ExpirationSeconds = int.Parse(config.ExpirationSeconds),
			CacheMilliseconds = int.Parse(config.CacheMilliseconds),
			RollingExpiration = config.RollingExpiration
		}));
		successMessage = "Configuration updated successfully.";
	}

	public class ConfigModel
	{
		public string CapacityLimit { get; set; } = "";
		public string ActivitySeconds { get; set; } = "";
		public string ExpirationSeconds { get; set; } = "";
		public string CacheMilliseconds { get; set; } = "";
		public bool RollingExpiration { get; set; }
	}
}