99 lines
3.3 KiB
C#
99 lines
3.3 KiB
C#
using System;
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using System.IO;
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using System.Net;
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using System.Threading.Tasks;
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using Xamarin.Essentials;
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using Xamarin.Forms;
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namespace Gallery.Util
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{
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public static class Store
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{
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public static readonly string PersonalFolder = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
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public static readonly string CacheFolder = FileSystem.CacheDirectory;
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private const string imageFolder = "img-original";
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private const string previewFolder = "img-preview";
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public static async Task<ImageSource> LoadRawImage(string url)
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{
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return await LoadImageAsync(url, null, PersonalFolder, imageFolder, force: true);
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}
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public static async Task<ImageSource> LoadPreviewImage(string url, bool downloading, bool force = false)
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{
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return await LoadImage(url, CacheFolder, previewFolder, downloading, force: force);
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}
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private static async Task<ImageSource> LoadImage(string url, string working, string folder, bool downloading, bool force = false)
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{
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var file = Path.Combine(working, folder, Path.GetFileName(url));
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ImageSource image;
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if (!force && File.Exists(file))
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{
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image = ImageSource.FromFile(file);
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}
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else
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{
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image = null;
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}
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if (downloading && image == null)
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{
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file = await NetHelper.DownloadImage(url, working, folder);
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if (file != null)
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{
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return ImageSource.FromFile(file);
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}
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}
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return image;
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}
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private static async Task<ImageSource> LoadImageAsync(string url, string id, string working, string folder, bool force = false)
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{
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var file = Path.Combine(working, folder, Path.GetFileName(url));
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ImageSource image;
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if (!force && File.Exists(file))
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{
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image = ImageSource.FromFile(file);
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}
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else
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{
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image = null;
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}
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if (image == null)
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{
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file = await NetHelper.DownloadImageAsync(url, id, working, folder);
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if (file != null)
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{
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image = ImageSource.FromFile(file);
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}
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}
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return image;
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}
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}
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public static class Config
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{
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public static readonly TimeSpan Timeout = TimeSpan.FromSeconds(30);
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public const string DownloadThreadsKey = "download_threads";
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public const string IsProxiedKey = "is_proxied";
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public const string ProxyHostKey = "proxy_host";
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public const string ProxyPortKey = "proxy_port";
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public const int MaxThreads = 8;
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public const string UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36";
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public const string AcceptLanguage = "zh-cn";
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public const string AcceptImage = "image/png,image/*,*/*;q=0.8";
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public static int DownloadThreads;
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public static WebProxy Proxy;
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}
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public static class Routes
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{
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public const string Gallery = "gallery";
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public const string Option = "option";
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}
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}
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