using dy.net.model.dto;
using dy.net.model.entity;
using Microsoft.AspNetCore.DataProtection;
using SqlSugar;
using dy.net.utils;
using MediaStorageType = dy.net.model.dto.StorageType;

namespace dy.net.service
{
    public class WebDavSettingsService
    {
        private const string SettingsId = "default";
        private readonly ISqlSugarClient _db;
        private readonly IDataProtector _protector;

        public WebDavSettingsService(ISqlSugarClient db, IDataProtectionProvider provider)
        {
            _db = db;
            _protector = provider.CreateProtector("dysync.webdav.password.v1");
        }

        public async Task<WebDavSettings> GetAsync()
        {
            return await _db.Queryable<WebDavSettings>().InSingleAsync(SettingsId)
                ?? new WebDavSettings { Id = SettingsId, BasePath = "/dysync" };
        }

        public async Task<string> GetPasswordAsync(WebDavSettings settings = null)
        {
            settings ??= await GetAsync();
            if (string.IsNullOrWhiteSpace(settings.ProtectedPassword)) return string.Empty;
            try
            {
                return _protector.Unprotect(settings.ProtectedPassword);
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, "WebDAV 密码解密失败，请重新输入密码");
                return string.Empty;
            }
        }

        public async Task<WebDavSettings> BuildCandidateAsync(WebDavTestRequest request)
        {
            request ??= new WebDavTestRequest();
            var existing = await GetAsync();
            var password = string.IsNullOrWhiteSpace(request.Password)
                ? await GetPasswordAsync(existing)
                : request.Password;

            return new WebDavSettings
            {
                Id = SettingsId,
                Endpoint = string.IsNullOrWhiteSpace(request.Endpoint) ? existing.Endpoint : request.Endpoint.Trim(),
                BasePath = string.IsNullOrWhiteSpace(request.BasePath) ? existing.BasePath : request.BasePath.Trim(),
                UserName = string.IsNullOrWhiteSpace(request.UserName) ? existing.UserName : request.UserName.Trim(),
                ProtectedPassword = string.IsNullOrWhiteSpace(password) ? null : _protector.Protect(password),
                AllowInvalidCertificate = request.AllowInvalidCertificate
            };
        }

        public async Task SaveAsync(WebDavSettings settings, bool tested, string testMessage)
        {
            settings.Id = SettingsId;
            settings.LastTestedAt = tested ? DateTime.Now : null;
            settings.LastTestMessage = testMessage;
            await _db.Storageable(settings).ExecuteCommandAsync();
        }

        public async Task<WebDavSettingsDto> ToDtoAsync(MediaStorageType storageType)
        {
            var settings = await GetAsync();
            return new WebDavSettingsDto
            {
                StorageType = storageType,
                Endpoint = settings.Endpoint,
                BasePath = settings.BasePath,
                UserName = settings.UserName,
                HasPassword = !string.IsNullOrWhiteSpace(settings.ProtectedPassword),
                AllowInvalidCertificate = settings.AllowInvalidCertificate,
                LastTestedAt = settings.LastTestedAt,
                LastTestMessage = settings.LastTestMessage
            };
        }

        public async Task InitializeCookiePathsAsync()
        {
            var cookies = await _db.Queryable<DouyinCookie>().ToListAsync();
            foreach (var cookie in cookies)
            {
                ApplyDefaultCookiePaths(cookie);
            }
            if (cookies.Count > 0) await _db.Updateable(cookies).ExecuteCommandAsync();
        }

        public void ApplyDefaultCookiePaths(DouyinCookie cookie)
        {
            if (cookie == null) return;
            var root = DouyinFileNameHelper.SanitizeLinuxFileName(cookie.UserName, cookie.Id, true);
            if (string.IsNullOrWhiteSpace(cookie.WebDavCollectPath)) cookie.WebDavCollectPath = $"/{root}/collect";
            if (string.IsNullOrWhiteSpace(cookie.WebDavFavoritePath)) cookie.WebDavFavoritePath = $"/{root}/favorite";
            if (string.IsNullOrWhiteSpace(cookie.WebDavFollowPath)) cookie.WebDavFollowPath = $"/{root}/follow";
            if (string.IsNullOrWhiteSpace(cookie.WebDavMixPath)) cookie.WebDavMixPath = $"/{root}/mix";
            if (string.IsNullOrWhiteSpace(cookie.WebDavSeriesPath)) cookie.WebDavSeriesPath = $"/{root}/series";
        }
    }
}