@page "/setup"
@rendermode InteractiveServer
@inject AdminConfigService AdminConfig
@inject NavigationManager Navigation
@using System.Net.Http.Json

<PageTitle>First-Time Setup</PageTitle>

@if (!AdminConfig.IsConfigured)
{
    <div class="row justify-content-center mt-5">
        <div class="col-md-6">
            <div class="card">
                <div class="card-header"><h4 class="mb-0">First-Time Setup</h4></div>
                <div class="card-body">
                    <p class="text-muted">
                        Welcome to the CannedNet Admin Panel. Before you can log in, please configure the
                        connection to your CannedNet server.
                    </p>

                    @if (saved)
                    {
                        <div class="alert alert-success">Settings saved! Redirecting to login...</div>
                    }

                    @if (error)
                    {
                        <div class="alert alert-danger">@errorMessage</div>
                    }

                    <div class="mb-3">
                        <label for="serverUrl" class="form-label">Server Base URL</label>
                        <input type="url" class="form-control" id="serverUrl" @bind="edit.ServerBaseUrl" placeholder="http://localhost:5000" />
                    </div>

                    <button class="btn btn-primary" @onclick="Save" disabled="@saving">
                        @(saving ? "Saving..." : "Save & Continue")
                    </button>
                </div>
            </div>
        </div>
    </div>
}
else
{
    <div class="row justify-content-center mt-5">
        <div class="col-md-4">
            <div class="card">
                <div class="card-body text-center">
                    <p>Already configured. <a href="/login">Go to login</a>.</p>
                </div>
            </div>
        </div>
    </div>
}

@code {
    private AdminConfigService.AdminConfigData edit = new();
    private bool saving;
    private bool saved;
    private bool error;
    private string errorMessage = "";

    private class KeyResponse
    {
        public string? apiKey { get; set; }
    }

    private async Task Save()
    {
        saving = true;
        saved = false;
        error = false;
        errorMessage = "";

        try
        {
            if (string.IsNullOrWhiteSpace(edit.ServerBaseUrl))
            {
                error = true;
                errorMessage = "Server Base URL is required.";
                return;
            }

            if (!Uri.TryCreate(edit.ServerBaseUrl, UriKind.Absolute, out _))
            {
                error = true;
                errorMessage = "Server Base URL is not a valid absolute URL.";
                return;
            }

            edit.NsBaseUrl = edit.ServerBaseUrl;
            AdminConfig.Save(edit);

            try
            {
                using var client = new HttpClient();
                client.BaseAddress = new Uri(edit.ServerBaseUrl.TrimEnd('/'));

                var keyResp = await client.GetFromJsonAsync<KeyResponse>("/admin/api/setup/key");
                if (keyResp?.apiKey != null)
                {
                    client.DefaultRequestHeaders.Add("X-Admin-Api-Key", keyResp.apiKey);
                    await client.PostAsJsonAsync("/admin/api/setup/baseurl", new { baseUrl = edit.ServerBaseUrl });
                }
            }
            catch
            {
                // server config update is best-effort during setup
            }

            saved = true;
            await Task.Delay(1000);
            Navigation.NavigateTo("/login", forceLoad: true);
        }
        finally
        {
            saving = false;
        }
    }
}