using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.AspNetCore.Mvc;

using weddingapi.Models;
using weddingapi.Repositories;
using weddingapi.Dtos;
using weddingapi.Converters;
using System.Threading.Tasks;

namespace weddingapi.Controllers
{
    [ApiController]
    [Route("family")]
    public class FamilyController : ControllerBase
    {
        private readonly IFamilyRepository repository;

        public FamilyController(IFamilyRepository repository)
        {
            this.repository = repository;
        }

        // GET /families
        [HttpGet]
        public async Task<IEnumerable<FamilyDto>> GetFamiliesAsync()
        {
            return (await repository.GetFamiliesAsync()).Select(family => family.AsDto());
        }

        // GET /family/{id}
        [HttpGet("{id}")]
        public async Task<ActionResult<FamilyDto>> GetFamilyAsync(Guid id)
        {
            var family = await repository.GetFamilyAsync(id);

            if(family is null)
            {
                return NotFound();
            }

            return family.AsDto();
        }

        // POST /family
        [HttpPost] 
        public async Task<ActionResult<FamilyDto>> CreateFamilyAsync(CreateFamilyDto familyDto)
        {
            Family fam = new Family()
            {
                Id = Guid.NewGuid(),
                CreatedDate = DateTimeOffset.UtcNow,
                Name = familyDto.Name,
                Members = familyDto.Members.Select(person => new Person() {
                    IsChild = person.IsChild,
                    Name = person.Name,
                }).ToList(),
            };

            await repository.CreateFamilyAsync(fam);

            return CreatedAtAction(nameof(GetFamilyAsync), new { id = fam.Id }, fam.AsDto());
        }

        // PUT /family/{id}
        [HttpPut("{id}")]
        public async Task<ActionResult> UpdateFamilyAsync(Guid id, UpdateFamilyDto familyDto)
        {
            var exisitingFamily = await repository.GetFamilyAsync(id);

            if(exisitingFamily is null)
            {
                return NotFound();
            }

            Family updatedFamily = exisitingFamily with
            {
                Members = familyDto.Members.Select(person => new Person() {
                    Name = person.Name,
                    IsChild = person.IsChild,
                }).ToList(),
                Name = familyDto.Name,
            };

            await repository.UpdateFamilyAsync(updatedFamily);

            return NoContent();
        }

        // Delete /family/{id}
        [HttpDelete("{id}")]
        public async Task<ActionResult> DeleteFamilyAsync(Guid id)
        {
             var exisitingFamily = repository.GetFamilyAsync(id);

            if(exisitingFamily is null)
            {
                return NotFound();
            }

            await repository.DeleteFamilyAsync(id);
            
            return NoContent();
        }
    }
}