using System;
using System.IO;
using System.Reflection;
using Moq;
using Umbraco.Core;
using Umbraco.Core.Cache;
using Umbraco.Core.Composing;
using Umbraco.Core.Configuration;
using Umbraco.Core.Configuration.UmbracoSettings;
using Umbraco.Core.Diagnostics;
using Umbraco.Core.Hosting;
using Umbraco.Core.IO;
using Umbraco.Core.Logging;
using Umbraco.Core.Models.PublishedContent;
using Umbraco.Net;
using Umbraco.Core.Persistence;
using Umbraco.Core.Serialization;
using Umbraco.Core.Strings;
using Umbraco.Core.Sync;
using Umbraco.Web;
using Umbraco.Web.Routing;

namespace Umbraco.Tests.Common
{
    /// <summary>
    /// Common helper properties and methods useful to testing
    /// </summary>
    public abstract class TestHelperBase
    {
        private readonly ITypeFinder _typeFinder;
        private UriUtility _uriUtility;
        private IIOHelper _ioHelper;
        private string _workingDir;

        protected TestHelperBase(Assembly entryAssembly)
        {
            SettingsForTests = new SettingsForTests();            
            MainDom = new SimpleMainDom();
            _typeFinder = new TypeFinder(Mock.Of<ILogger>(), new DefaultUmbracoAssemblyProvider(entryAssembly), new VaryingRuntimeHash());
        }

        public ITypeFinder GetTypeFinder() => _typeFinder;

        public TypeLoader GetMockedTypeLoader()
        {
            return new TypeLoader(Mock.Of<ITypeFinder>(), Mock.Of<IAppPolicyCache>(), new DirectoryInfo(IOHelper.MapPath("~/App_Data/TEMP")), Mock.Of<IProfilingLogger>());
        }

        public Configs GetConfigs() => GetConfigsFactory().Create();

        public IRuntimeState GetRuntimeState()
        {
            return new RuntimeState(
                Mock.Of<ILogger>(),
                Mock.Of<IGlobalSettings>(),
                GetUmbracoVersion(),
                GetBackOfficeInfo());
        }

        public abstract IBackOfficeInfo GetBackOfficeInfo();

        public IConfigsFactory GetConfigsFactory() => new ConfigsFactory();

        /// <summary>
        /// Gets the working directory of the test project.
        /// </summary>
        public virtual string WorkingDirectory
        {
            get
            {
                if (_workingDir != null) return _workingDir;

                var dir = Path.Combine(Assembly.GetExecutingAssembly().GetRootDirectorySafe(), "TEMP");

                if (!Directory.Exists(dir))
                    Directory.CreateDirectory(dir);
                _workingDir = dir;
                return _workingDir;
            }
        }

        public IShortStringHelper ShortStringHelper { get; } = new DefaultShortStringHelper(new DefaultShortStringHelperConfig());
        public IJsonSerializer JsonSerializer { get; } = new JsonNetSerializer();
        public IVariationContextAccessor VariationContextAccessor { get; } = new TestVariationContextAccessor();
        public abstract IDbProviderFactoryCreator DbProviderFactoryCreator { get; }
        public abstract IBulkSqlInsertProvider BulkSqlInsertProvider { get; }
        public abstract IMarchal Marchal { get; }
        public ICoreDebugSettings CoreDebugSettings { get; } =  new CoreDebugSettings();

        public IIOHelper IOHelper
        {
            get
            {
                if (_ioHelper == null)
                    _ioHelper = new IOHelper(GetHostingEnvironment(), SettingsForTests.GenerateMockGlobalSettings());
                return _ioHelper;
            }
        }

        public IMainDom MainDom { get; }
        public UriUtility UriUtility
        {
            get
            {
                if (_uriUtility == null)
                    _uriUtility = new UriUtility(GetHostingEnvironment());
                return _uriUtility;
            }
        }

        public SettingsForTests SettingsForTests { get; }
        public IWebRoutingSettings WebRoutingSettings => SettingsForTests.GenerateMockWebRoutingSettings();

        /// <summary>
        /// Some test files are copied to the /bin (/bin/debug) on build, this is a utility to return their physical path based on a virtual path name
        /// </summary>
        /// <param name="relativePath"></param>
        /// <returns></returns>
        public string MapPathForTestFiles(string relativePath)
        {
            if (!relativePath.StartsWith("~/"))
                throw new ArgumentException("relativePath must start with '~/'", nameof(relativePath));

            var codeBase = typeof(TestHelperBase).Assembly.CodeBase;
            var uri = new Uri(codeBase);
            var path = uri.LocalPath;
            var bin = Path.GetDirectoryName(path);

            return relativePath.Replace("~/", bin + "/");
        }

        public IUmbracoVersion GetUmbracoVersion() => new UmbracoVersion(GetConfigs().Global());

        public IRegister GetRegister()
        {
            return RegisterFactory.Create(GetConfigs().Global());
        }

        public abstract IHostingEnvironment GetHostingEnvironment();
        public abstract IApplicationShutdownRegistry GetHostingEnvironmentLifetime();

        public abstract IIpResolver GetIpResolver();

        public IRequestCache GetRequestCache()
        {
            return new DictionaryAppCache();
        }

        public IPublishedUrlProvider GetPublishedUrlProvider()
        {
            var mock = new Mock<IPublishedUrlProvider>();

            return mock.Object;
        }
    }
}