using Asp.Versioning;
using GerstITS.Examples.Api.Versioning;
using GerstITS.System.Caching;
using GerstITS.Validation;
using GerstITS.Web.Api;
using GerstITS.Web.Api.FluentApi;
using Microsoft.AspNetCore.Mvc;

namespace GerstITS.Examples.Api.Controllers._1._1;

/// <summary>
/// Is responsible to demonstrate the encrypted session based cache.
/// </summary>
[ApiController,
 ApiVersion(Versions._1_1),
 Route(ApplicationEnvironment.WebApi.ControllerRouteTemplate)]
public class CacheController : FluentApiControllerBase
{
    #region Fields

    private readonly ICache _cache;

    #endregion

    #region Constructors

    public CacheController(ICache cache,
                           IValidator validator)
        : base(validator)
    {
        _cache = cache;
    }

    #endregion

    #region Methods

    /// <summary>
    /// Gets a cached value by specified key.
    /// </summary>
    /// <param name="key">Key of the cached value.</param>
    /// <returns>Returns the cached value.</returns>
    [HttpGet,
     Route("{key}")]
    public IActionResult Get(string key)
    {
        return Api().Use(key)
                    .Get(_cache.Get<string>);
    }

    /// <summary>
    /// Checks whether a value is cached for the specified key.
    /// </summary>
    /// <param name="key">Key of the cached value.</param>
    /// <returns>Returns true if a value is cached.</returns>
    [HttpGet,
     Route("{key}/Exists")]
    public IActionResult Exists(string key)
    {
        return Api().Use(key)
                    .Get(_cache.ContainsKey);
    }

    /// <summary>
    /// Caches a value for the specified key.
    /// </summary>
    /// <param name="key">Key of the value to cache.</param>
    /// <param name="value">Value to cache.</param>
    /// <returns>Returns the cached value.</returns>
    [HttpPost,
     Route("{key}")]
    public IActionResult Set(string key, [FromBody] string value)
    {
        return Api().Use(key)
                    .Create(x => {
                                     _cache.Set(x, value);

                                     return value;
                                 });
    }

    /// <summary>
    /// Removes a cached value by specified key.
    /// </summary>
    /// <param name="key">Key of the cached value.</param>
    /// <returns>Returns true if the value was removed.</returns>
    [HttpDelete,
     Route("{key}")]
    public IActionResult Remove(string key)
    {
        return Api().Use(key)
                    .Delete(x => {
                                     _cache.Remove(x);

                                     return true;
                                 });
    }

    #endregion
}