using CodeLiturgy.Data.Auth.Context.Users;
using CodeLiturgy.Domain;
using CodeLiturgy.Views.Augeas;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Sharp.Augeas;
using System.Text.Json;

namespace CodeLiturgy.Views.Controllers
{
    /// <summary>
    /// Controller responsible to manage Apache configurations.
    /// </summary>
    [ApiController]
    [Authorize]
    public class ApacheController : ControllerBase
    {
        private ILogger<SitesApiController> _logger;
        private readonly SiteDbContext _siteDbContext;
        private readonly AugeasManager _augeasManager;
        
        /// <summary>
        /// Apache controller constructor.
        /// </summary>
        /// <param name="userManager"></param>
        /// <param name="logger"></param>
        /// <param name="siteDbContext"></param>
        /// <param name="augeasManager"></param>
        public ApacheController(
            ApplicationUserManager userManager, 
            ILogger<SitesApiController> logger, 
            SiteDbContext siteDbContext,
            AugeasManager augeasManager)
        {
            _logger = logger;
            _siteDbContext = siteDbContext;
            _augeasManager = augeasManager;
        }
        
        /// <summary>
        /// Gets site in /etc/apache/sites-available
        /// </summary>
        /// <param name="skip"></param>
        /// <param name="take"></param>
        /// <param name="orderDir"></param>
        /// <returns></returns>
        [HttpGet("/api/apache")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
        
        public ActionResult GetSites(

            int skip = 0, int take = 50, int orderDir = 1)
        {
            var sites = _augeasManager
                .GetApacheAvailableConfigurations(skip, take);

            return Ok(sites);
        }
        
        /// <summary>
        /// Gets a preview of the configuration of a certain site.
        /// </summary>
        /// <param name="site">Site configuration filename.</param>
        /// <returns></returns>
        [HttpGet("/api/apache/preview/{site}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
        
        public ActionResult GetSitePreview(
            string site)
        {
            var preview = _augeasManager
                .GetPreview(site);

            return Ok(preview);
        }
             
        /// <summary>
        /// Gets tree object of a certain site.
        /// </summary>
        /// <param name="site">Site configuration file.</param>
        /// <returns></returns>
        [HttpGet("/api/apache/tree/{site}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
        
        public ActionResult<SuperNode> GetSiteTree(
            string site)
        {
            var tree = _augeasManager
                .GetVirtualHostTree(site);
            
            return Ok(tree);
        }

        /// <summary>
        /// Gets a directive. 
        /// </summary>
        /// <param name="site"></param>
        /// <param name="directive"></param>
        /// <returns></returns>
        [HttpGet("/api/apache/tree/{site}/directive/{directive}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
        
        public ActionResult GetDirective(
            string site,
            string directive)
        {
            var rDirective = _augeasManager.GetDirective(site, directive);
            return Ok(rDirective);
        }
        /// <summary>
        /// Sets a new value for the directive. The first word is the directive value, the following words correspond to the arguments.
        /// </summary>
        /// <param name="site">Site configuration filename.</param>
        /// <param name="directive"></param>
        /// <param name="newValue"></param>
        /// <returns></returns>
        [HttpPost("/api/apache/tree/{site}/directive/{directive}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
        
        public ActionResult SetDirective(
            string site,
            string directive, 
            string newValue)
        {
            var rDirective = _augeasManager.GetDirective(site, directive);
            rDirective?.Set(newValue);
            
            return Ok(rDirective);
        }
        
        /// <summary>
        /// Persists changes to the configurations to disk. 
        /// </summary>
        /// <returns></returns>
        [ProducesResponseType(StatusCodes.Status201Created)]
        [ProducesResponseType(StatusCodes.Status406NotAcceptable)]
        [HttpGet("save")]
        public ActionResult Save()
        {
            var sucess = _augeasManager.Save();

            return Ok(sucess);
        }
        
    }
}