@page "/settings"
@using System.ComponentModel.DataAnnotations
@using DiscordBotCore.Configuration
@using DiscordBotCore.Logging
@inject NavigationManager Navigation

@rendermode InteractiveServer

@if (_settingsViewModel is not null)
{
    <div class="container-fluid d-flex justify-content-center align-items-center" style="height: 95vh;">
        <div class="card shadow-lg border-0" style="max-width: 500px; width: 100%;">
            <div class="card-body p-4">
                <h2 class="card-title text-center mb-4 fw-semibold">Bot Settings</h2>

                <EditForm Model="_settingsViewModel" OnValidSubmit="HandleSubmitTask">
                    <DataAnnotationsValidator />
                    <ValidationSummary class="text-danger" />

                    <div class="mb-3">
                        <label class="form-label" for="tokenInput">Token</label>
                        <InputText id="tokenInput" class="form-control" placeholder="Enter bot token"
                            @bind-Value="_settingsViewModel.Token" />
                    </div>

                    <div class="mb-3">
                        <label class="form-label" for="prefixInput">Prefix</label>
                        <InputText id="prefixInput" class="form-control" placeholder="!"
                            @bind-Value="_settingsViewModel.Prefix" />
                    </div>

                    <div class="mb-4">
                        <label class="form-label" for="serverIdsInput">Server IDs (comma-separated)</label>
                        <InputTextArea id="serverIdsInput" class="form-control" placeholder="12345, 67890" Rows="3"
                            @bind-Value="_settingsViewModel.ServerIds" />
                    </div>

                    <button type="submit" class="btn btn-primary w-100">
                        Save&nbsp;<i class="bi bi-check-lg"></i>
                    </button>
                </EditForm>
            </div>
        </div>
    </div>
}

@code {
    [Inject] public ILogger Logger { get; set; }
    [Inject] public IConfiguration Configuration { get; set; }

    private SettingsViewModel? _settingsViewModel;

    protected override void OnInitialized()
    {
        var token = Configuration.Get<string>("token");
        var prefix = Configuration.Get<string>("prefix");
        var serverIds = Configuration.GetList<ulong>("ServerIds", new List<ulong>());

        if (token is null || prefix is null)
        {
            Logger.Log("Token or Prefix is not set in the configuration.", this);
            _settingsViewModel = new SettingsViewModel();
            return;
        }

        _settingsViewModel = new SettingsViewModel
        {
            Token = token,
            Prefix = prefix,
            ServerIds = string.Join(',', serverIds)
        };
    }

    private async Task HandleSubmitTask()
    {
        if (_settingsViewModel is null) return;

        var ids = _settingsViewModel.ServerIds
        .Split(',', StringSplitOptions.RemoveEmptyEntries)
        .Select(id => ulong.TryParse(id.Trim(), out var v) ? v : 0)
        .Where(v => v != 0)
        .ToList();

        if (string.IsNullOrWhiteSpace(_settingsViewModel.Token) ||
        string.IsNullOrWhiteSpace(_settingsViewModel.Prefix))
            return;

        Configuration.Set("token", _settingsViewModel.Token);
        Configuration.Set("prefix", _settingsViewModel.Prefix);
        Configuration.Set("ServerIds", ids);

        await Configuration.SaveToFile();
        Logger.Log("Settings saved successfully.", this);
        Navigation.NavigateTo("/");
    }

    private class SettingsViewModel
    {
        [Required(ErrorMessage = "Token is required.")]
        public string Token { get; set; } = string.Empty;

        [Required(ErrorMessage = "Prefix is required.")]
        public string Prefix { get; set; } = string.Empty;

        [Required(ErrorMessage = "Server IDs are required.")]
        public string ServerIds { get; set; } = string.Empty;
    }
}