using HrynCo.NotificationService.DAL.Abstract.PushChannels;
using HrynCo.NotificationService.DAL.Abstract.Repositories;
using HrynCo.NotificationService.Services.PushChannels;
using HrynCo.NotificationService.Web.Controllers.Admin.ViewModels;
using MediatR;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Rendering;
using HrynCo.NotificationService.Worker.Services.Push;

namespace HrynCo.NotificationService.Web.Controllers.Admin;

[Route("admin/push-channels")]
public sealed class AdminPushChannelsController(
    IPushChannelRepository channels, INotificationServiceRepository services, IMediator mediator,
    PushChannelTestService tester) : Controller
{
    [HttpPost("test-authorization")]
    [ValidateAntiForgeryToken]
    [RequestSizeLimit(131072)]
    public async Task<IActionResult> TestAuthorization([FromBody] PushChannelTestSettings? settings, CancellationToken ct)
    {
        if (settings is null || !ModelState.IsValid) return BadRequest(new { success = false, message = "Invalid test settings." });
        var result = await tester.TestAsync(settings, false, ct);
        return Json(new { success = result.Error is null, message = result.Error ??
            "OAuth access token obtained. FCM send permission and device delivery have not been verified. No push was sent." });
    }

    [HttpPost("test-send")]
    [ValidateAntiForgeryToken]
    [RequestSizeLimit(131072)]
    public async Task<IActionResult> TestSend([FromBody] PushChannelTestSettings? settings, CancellationToken ct)
    {
        if (settings is null || !ModelState.IsValid) return BadRequest(new { success = false, message = "Invalid test settings." });
        var result = await tester.TestAsync(settings, true, ct);
        return Json(new { success = result.Error is null, message = result.Error ??
            "Firebase accepted the test message. This does not confirm delivery or display on the device." });
    }

    [HttpGet("")]
    public async Task<IActionResult> Index(CancellationToken ct) => View(await channels.GetAllAsync(ct));

    [HttpGet("create")]
    public Task<IActionResult> Create(CancellationToken ct) => EditorViewAsync(new PushChannelEditViewModel(), ct);

    [HttpGet("{id:guid}")]
    public async Task<IActionResult> Edit(Guid id, CancellationToken ct)
    {
        var channel = await channels.GetByIdAsync(id, ct);
        if (channel is null) return NotFound();
        return await EditorViewAsync(new PushChannelEditViewModel
        {
            Id = channel.Id, ServiceId = channel.ServiceId,
            FirebaseProjectId = channel.FirebaseProjectId, IsActive = channel.IsActive
        }, ct);
    }

    [HttpPost("save")]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> Save(PushChannelEditViewModel model, CancellationToken ct)
    {
        if (!ModelState.IsValid) return await EditorViewAsync(model, ct);
        var result = await mediator.Send(new SavePushChannelCommand
        {
            Id = model.Id, ServiceId = model.ServiceId!.Value, FirebaseProjectId = model.FirebaseProjectId,
            CredentialsJson = model.CredentialsJson, IsActive = model.IsActive
        }, ct);
        if (result.IsSuccess) return RedirectToAction(nameof(Index));
        ModelState.AddModelError(string.Empty, result.Error?.Message ?? "Could not save the push channel.");
        return await EditorViewAsync(model, ct);
    }

    private async Task<IActionResult> EditorViewAsync(PushChannelEditViewModel model, CancellationToken ct)
    {
        model.CredentialsJson = null;
        // Razor tag helpers prefer ModelState over the model, so clear the attempted secret too.
        ModelState.Remove(nameof(model.CredentialsJson));
        model.Services = (await services.GetAllAsync(ct))
            .Select(s => new SelectListItem(s.Name, s.Id.ToString())).ToList();
        return View("Edit", model);
    }
}