using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using eprintServer.Services;
using eprintServer.Requests;
using eprintServer.Responses;
using eprintServer.Entities;
using eprintServer.Interfaces;

namespace eprintServer.Controllers;

[ApiController]
[Route("api/v1/cms/branding")]
[Authorize(Roles = "ADMIN,SUB_ADMIN")]
public class BrandingController : ControllerBase
{
    private readonly BrandingColorService _brandingService;
    private readonly IFileStorageService _fileStorageService;

    public BrandingController(BrandingColorService brandingService, IFileStorageService fileStorageService)
    {
        _brandingService = brandingService;
        _fileStorageService = fileStorageService;
    }

    [HttpGet] 
    [AllowAnonymous] 
    public async Task<ActionResult<BrandingSettingsRequest>> GetBrandingSettings()
    {
        // Service now returns BrandingColor with Logo and Favicon eagerly loaded
        var settings = await _brandingService.GetBrandingSettingsAsync();
        
        // Map data from the loaded entity, including FileModel objects
        var response = new BrandingSettingsRequest
        {
            PrimaryColor = settings.PrimaryColor,
            SecondaryColor = settings.SecondaryColor,
            AccentColor = settings.AccentColor,
            ButtonColor = settings.ButtonColor,
            HeaderColor = settings.HeaderColor,
            PlatformName = settings.PlatformName,
            PlatformEmail = settings.PlatformEmail,
            // Mapping the full FileModel object
            Logo = settings.Logo,    
            Favicon = settings.Favicon 
        };

        return Ok(response);
    }

    [HttpPut] 
    public async Task<ActionResult<BrandingSettingsRequest>> UpdateBrandingSettings([FromBody] UpdateBrandingSettingsRequest request)
    {
        // The service now handles checking for null/non-null properties in the request
        var updatedSettings = await _brandingService.UpdateBrandingSettingsAsync(request);
        
        // Map data back, including the existing file objects
        var response = new BrandingSettingsRequest
        {
            PrimaryColor = updatedSettings.PrimaryColor,
            SecondaryColor = updatedSettings.SecondaryColor,
            AccentColor = updatedSettings.AccentColor,
            ButtonColor = updatedSettings.ButtonColor,
            HeaderColor = updatedSettings.HeaderColor,
            PlatformName = updatedSettings.PlatformName,
            PlatformEmail = updatedSettings.PlatformEmail,
            // Mapping the full FileModel object
            Logo = updatedSettings.Logo,    
            Favicon = updatedSettings.Favicon 
        };
        
        return Ok(response);
    }

    [HttpPost("upload/logo")] 
    public async Task<ActionResult<FileUploadResponse>> UploadLogo(IFormFile logo)
    {
        if (logo == null || logo.Length == 0)
        {
            return BadRequest("A file is required.");
        }
        
        try
        {
            const string SubDirectory = "logos";
            var fileModel = await _fileStorageService.SaveFileAsync(logo, SubDirectory);

            var brandingSettings = await _brandingService.GetBrandingSettingsAsync();

            brandingSettings.SetLogo(fileModel);
            
            await _brandingService.SaveBrandingSettingsAsync(brandingSettings);

       
            var response = new FileUploadResponse(fileModel);

            return Ok(response);
        }
        catch (Exception ex)
        {
            return StatusCode(500, $"Something went wrong during logo upload: {ex.Message}");
        }
    }
    
  
    [HttpPost("upload/favicon")]
    public async Task<ActionResult<FileUploadResponse>> UploadFavicon(IFormFile favicon)
    {
        if (favicon == null || favicon.Length == 0)
        {
            return BadRequest("A file is required.");
        }
        
        try
        {
            
            const string SubDirectory = "favicons";
            var fileModel = await _fileStorageService.SaveFileAsync(favicon, SubDirectory);

           
            var brandingSettings = await _brandingService.GetBrandingSettingsAsync();

            brandingSettings.SetFavicon(fileModel);
     
            await _brandingService.SaveBrandingSettingsAsync(brandingSettings);

        
            var response = new FileUploadResponse(fileModel);

            return Ok(response);
        }
        catch (Exception ex)
        {
            return StatusCode(500, $"Something went wrong during favicon upload: {ex.Message}");
        }
    }
}