using System.Security.Claims;
using HealthManager.Application.Services;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;

namespace HealthManager.WebApi.Controllers;

[ApiController]
[Route("api/consultations")]
[Authorize]
public class ConsultationController(ConsultationService consultationService) : ControllerBase
{
    private Guid UserId => Guid.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
    private string Role => User.FindFirstValue(ClaimTypes.Role)!;

    [HttpGet("doctors")]
    public async Task<IActionResult> GetDoctors([FromQuery] string? department)
    {
        var doctors = await consultationService.GetDoctorsAsync(department);
        return Ok(doctors.Select(d => new
        {
            d.Id, d.Name, d.Department, d.Title, d.Specialty, d.Introduction, d.AvatarUrl,
        }));
    }

    [HttpGet]
    public async Task<IActionResult> GetConsultations()
    {
        var consultations = Role == "doctor"
            ? await consultationService.GetDoctorConsultationsAsync(UserId)
            : await consultationService.GetPatientConsultationsAsync(UserId);

        return Ok(consultations.Select(c => new
        {
            c.Id, c.PatientId, c.DoctorId,
            PatientName = c.Patient?.Name,
            DoctorName = c.Doctor?.Name,
            c.Subject, c.Status, c.StartedAt, c.ClosedAt, c.Summary,
        }));
    }

    [HttpPost]
    public async Task<IActionResult> StartConsultation([FromBody] StartConsultationRequest request)
    {
        var consultation = await consultationService.StartAsync(UserId, request.DoctorId, request.Subject);
        return Ok(new { consultation.Id, consultation.PatientId, consultation.DoctorId, consultation.Status });
    }

    [HttpGet("{id:guid}/messages")]
    public async Task<IActionResult> GetMessages(Guid id)
    {
        var messages = await consultationService.GetMessagesAsync(id);
        return Ok(messages.Select(m => new
        {
            m.Id, m.SenderId, m.SenderRole, m.ContentType, m.Content,
            m.ImageUrl, m.IsRead, m.CreatedAt,
            SenderName = m.Sender?.Name,
        }));
    }

    [HttpPost("{id:guid}/messages")]
    public async Task<IActionResult> SendMessage(Guid id, [FromBody] SendMessageRequest request)
    {
        var message = await consultationService.SendMessageAsync(id, UserId, Role, request.Content,
            request.ContentType, request.ImageUrl);
        return Ok(new { message.Id, message.SenderId, message.SenderRole, message.Content, message.CreatedAt });
    }
}

public record StartConsultationRequest(Guid DoctorId, string Subject);
public record SendMessageRequest(string Content, string ContentType = "text", string? ImageUrl = null);