using System.Threading.Channels;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Purrse.Api.Services;
using Purrse.Core.DTOs;
using Purrse.Core.Interfaces.Services;
using System.Security.Claims;

namespace Purrse.Api.Controllers;

[Authorize]
[ApiController]
[Route("api/ai-categorization")]
public class AiCategorizationController : ControllerBase
{
    private readonly IAiCategorizationService _aiService;
    private readonly Channel<ClassificationJob> _classificationChannel;
    private Guid UserId => Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);

    public AiCategorizationController(IAiCategorizationService aiService, Channel<ClassificationJob> classificationChannel)
    {
        _aiService = aiService;
        _classificationChannel = classificationChannel;
    }

    [HttpGet("settings")]
    public async Task<ActionResult<AiCategorizationSettingsResponse>> GetSettings()
        => Ok(await _aiService.GetSettingsAsync(UserId));

    [HttpPut("settings")]
    public async Task<ActionResult<AiCategorizationSettingsResponse>> UpdateSettings(UpdateAiCategorizationSettingsRequest request)
        => Ok(await _aiService.UpdateSettingsAsync(UserId, request));

    [HttpPost("test-connection")]
    public async Task<ActionResult<OllamaConnectionTestResponse>> TestConnection()
        => Ok(await _aiService.TestConnectionAsync(UserId));

    [HttpPost("classify")]
    public async Task<IActionResult> ClassifyUncategorized(ClassifyUncategorizedRequest request)
    {
        var job = new ClassificationJob(UserId, request.AccountId, request.StartDate, request.EndDate, request.SearchText, request.Status);
        await _classificationChannel.Writer.WriteAsync(job);
        return Accepted(new { message = "Classification job queued" });
    }
}