using AutoMapper;
using Microsoft.AspNetCore.Mvc;
using Microsoft.SelfService.Portal.Core.API.Dto.Template.Add;
using Microsoft.SelfService.Portal.Core.API.Dto.Template.Edit;
using Microsoft.SelfService.Portal.Core.API.Dto.Template.Get;
using Microsoft.SelfService.Portal.Core.API.Interfaces;
using Microsoft.SelfService.Portal.Core.API.Models;

namespace Microsoft.SelfService.Portal.Core.API.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class TemplateController : Controller
    {
        private readonly ITemplateInterface _templateInterface;
        private readonly IQueueJobService _queueJobService;
        private readonly IMapper _mapper;

        public TemplateController(
            ITemplateInterface templateInterface,
            IQueueJobService queueJobService,
            IMapper mapper)
        {
            _templateInterface = templateInterface;
            _queueJobService = queueJobService;
            _mapper = mapper;
        }

        [HttpGet]
        [ProducesResponseType(200, Type = typeof(IEnumerable<TemplateModel>))]
        public IActionResult GetTemplates()
        {
            var templates = _mapper.Map<List<GetTemplateDto>>(_templateInterface.GetTemplates());

            if (!ModelState.IsValid)
                return BadRequest(ModelState);

            return Ok(templates);
        }

        [HttpGet("{Id}")]
        [ProducesResponseType(200, Type = typeof(TemplateModel))]
        [ProducesResponseType(404)]
        public IActionResult GetTemplateById(Guid Id)
        {
            if (!_templateInterface.CheckTemplateById(Id))
                return NotFound();

            var template = _mapper.Map<GetTemplateDetailsDto>(_templateInterface.GetTemplateById(Id));

            if (!ModelState.IsValid)
                return BadRequest(ModelState);

            return Ok(template);
        }

        [HttpPost]
        [ProducesResponseType(200)]
        [ProducesResponseType(400)]
        public IActionResult AddTemplateById([FromBody] AddTemplateDto template)
        {
            if (template == null)
                return BadRequest(ModelState);

            if (_templateInterface.CheckTemplateByName(template.Name))
            {
                ModelState.AddModelError("", "Template already exists");
                return StatusCode(422, ModelState);
            }

            if (!ModelState.IsValid)
                return BadRequest(ModelState);

            var templateMap = _mapper.Map<TemplateModel>(template);

            if (!_templateInterface.AddTemplateById(templateMap))
            {
                ModelState.AddModelError("", "Something went wrong while saving");
                return StatusCode(500, ModelState);
            }

            return Ok(templateMap.Id);
        }

        [HttpPut("{Id}")]
        [ProducesResponseType(204)]
        [ProducesResponseType(400)]
        [ProducesResponseType(404)]
        public IActionResult EditTemplateById(Guid Id, [FromBody] EditTemplateDto template)
        {
            if (template == null)
                return BadRequest(ModelState);

            if (!_templateInterface.CheckTemplateById(Id))
                return NotFound();

            var existingTemplate = _templateInterface.GetTemplateById(Id);

            if (!ModelState.IsValid)
                return BadRequest(ModelState);

            var templateMap = _mapper.Map<TemplateModel>(template);
            templateMap.Id = Id;

            if (!_templateInterface.EditTemplateById(templateMap))
            {
                ModelState.AddModelError("", "Something went wrong");
                return StatusCode(500, ModelState);
            }

            if (!string.Equals(existingTemplate.JSONData, template.JSONData, StringComparison.Ordinal))
            {
                _queueJobService.EnqueueTemplateJsonChanged(Id, existingTemplate.JSONData, template.JSONData);
            }

            return NoContent();
        }

        [HttpDelete("{Id}")]
        [ProducesResponseType(204)]
        [ProducesResponseType(400)]
        [ProducesResponseType(404)]
        public IActionResult DeleteTemplateById(Guid Id)
        {
            if (!_templateInterface.CheckTemplateById(Id))
                return NotFound();

            if (!ModelState.IsValid)
                return BadRequest(ModelState);

            var template = _templateInterface.GetTemplateById(Id);

            if (!_templateInterface.DeleteTemplateById(template))
            {
                ModelState.AddModelError("", "Something went wrong while deleting");
                return StatusCode(500, ModelState);
            }

            return NoContent();
        }
    }
}