SPMS_API/SPMS.API/Controllers/MessageController.cs

using Microsoft.AspNetCore.Mvc;
using Swashbuckle.AspNetCore.Annotations;
using SPMS.Application.DTOs.Message;
using SPMS.Application.Interfaces;
using SPMS.Domain.Common;

namespace SPMS.API.Controllers;

[ApiController]
[Route("v1/in/message")]
[ApiExplorerSettings(GroupName = "message")]
public class MessageController : ControllerBase
{
    private readonly IMessageValidationService _validationService;
    private readonly IMessageService _messageService;

    public MessageController(IMessageValidationService validationService, IMessageService messageService)
    {
        _validationService = validationService;
        _messageService = messageService;
    }

    [HttpPost("validate")]
    [SwaggerOperation(Summary = "메시지 유효성 검사", Description = "메시지 내용의 유효성을 검사합니다.")]
    public IActionResult ValidateAsync([FromBody] MessageValidateRequestDto request)
    {
        var result = _validationService.Validate(request);
        return Ok(ApiResponse<MessageValidationResultDto>.Success(result));
    }

    [HttpPost("preview")]
    [SwaggerOperation(Summary = "메시지 미리보기", Description = "메시지 템플릿에 변수를 치환하여 미리보기를 생성합니다.")]
    public async Task<IActionResult> PreviewAsync([FromBody] MessagePreviewRequestDto request)
    {
        var serviceId = GetServiceId();
        var result = await _messageService.PreviewAsync(serviceId, request);
        return Ok(ApiResponse<MessagePreviewResponseDto>.Success(result));
    }

    private long GetServiceId()
    {
        if (HttpContext.Items.TryGetValue("ServiceId", out var serviceIdObj) && serviceIdObj is long serviceId)
            return serviceId;

        throw new Domain.Exceptions.SpmsException(ErrorCodes.BadRequest, "서비스 식별 정보가 없습니다.", 400);
    }
}