using Asp.Versioning;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using TarninaHub.Application.Abstractions;
using TarninaHub.Application.Dtos;
using TarninaHub.Application.Security;

namespace TarninaHub.Controllers;

[ApiController]
[ApiVersion("1.0")]
[Route("api/admin")]
[Authorize(Policy = Policies.OperatorOrAdmin)]
public class AdminController : ControllerBase
{
    private readonly IAdminService _admin;
    private readonly IGrantCallService _grantCalls;
    private readonly IIdeaService _ideas;
    private readonly INotificationService _notifications;

    public AdminController(
        IAdminService admin,
        IGrantCallService grantCalls,
        IIdeaService ideas,
        INotificationService notifications)
    {
        _admin = admin;
        _grantCalls = grantCalls;
        _ideas = ideas;
        _notifications = notifications;
    }

    [HttpGet("submissions")]
    public async Task<ActionResult<IReadOnlyList<SubmissionResponse>>> ListSubmissions(
        [FromQuery] string? status,
        [FromQuery] string? challengeId,
        CancellationToken cancellationToken)
    {
        var submissions = await _admin.ListSubmissionsAsync(status, challengeId, cancellationToken);

        return Ok(submissions);
    }

    [HttpPut("knowledge-items/{knowledgeItemId}/verify")]
    public async Task<ActionResult<KnowledgeItemResponse>> VerifyKnowledgeItem(
        string knowledgeItemId,
        VerifyKnowledgeItemRequest request,
        CancellationToken cancellationToken)
    {
        var item = await _admin.VerifyKnowledgeItemAsync(knowledgeItemId, request, cancellationToken);

        return item is null ? NotFound() : Ok(item);
    }

    [HttpGet("metrics")]
    public async Task<ActionResult<AdminMetricsResponse>> Metrics(CancellationToken cancellationToken)
    {
        var metrics = await _admin.GetMetricsAsync(cancellationToken);

        return Ok(metrics);
    }

    [HttpPut("grant-calls/{grantCallId}/status")]
    public async Task<ActionResult<GrantCallResponse>> UpdateGrantCallStatus(
        string grantCallId,
        UpdateGrantCallStatusRequest request,
        CancellationToken cancellationToken)
    {
        var updated = await _grantCalls.UpdateStatusAsync(grantCallId, request.Status, cancellationToken);

        if (updated is null)
        {
            return NotFound();
        }

        if (string.Equals(request.Status, "open", StringComparison.Ordinal))
        {
            await NotifyIdeaAuthorsAsync(updated, cancellationToken);
        }

        return Ok(updated);
    }

    private async Task NotifyIdeaAuthorsAsync(GrantCallResponse call, CancellationToken cancellationToken)
    {
        var authorIds = await _ideas.ListDistinctAuthorIdsAsync(cancellationToken);
        var payload = new Dictionary<string, string?>
        {
            ["grantCallId"] = call.Id,
            ["name"] = call.Name,
        };

        foreach (var authorId in authorIds)
        {
            await _notifications.NotifyUserAsync(authorId, "grant_call.opened", payload, cancellationToken);
        }
    }
}