KdanCommon/GoogleCloud/GoogleCloud.cs

using KdanCommon.GoogleCloud.Data;
using KdanCommon.GoogleCloud.Data.Vision;
using KdanCommon.Helpers;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Windows.Globalization;
using Windows.Storage;
using Windows.System;

namespace KdanCommon.GoogleCloud
{
    public class GoogleCloud
    {
        public static string VisionDomain = "https://vision.googleapis.com";
        private Uri _visionImagesUri = null;

        private HttpClient _httpClient = null;
        private string _key = null;

        public GoogleCloud(string key)
        {
            _key = key;
            _httpClient = new HttpClient();
            _visionImagesUri = new Uri($"{VisionDomain}/v1/images:annotate?key={_key}");
        }

        ~GoogleCloud()
        {
            _httpClient.Dispose();
        }

        // Document : https://cloud.google.com/vision/docs/reference/rest/v1/images/annotate
        // Image files sent to the Vision API should not exceed 20MB.
        // Files exceeding 20MB generate an error.
        // The Vision API does not resize files of this size. Reducing your file size can significantly improve throughput;
        // however, be careful not to reduce image quality in the process.
        // Note that the Vision API imposes a 10MB JSON request size limit;
        // larger files should be hosted on Cloud Storage or on the web, rather than being passed as base64-encoded content in the JSON itself.
        public async Task<ImagesResponse> GetVisionImages(List<StorageFile> images, string[] langHints = null)
        {
            ImagesResponse response = null;
            var base64Contents = new List<string>();
            foreach (var image in images)
            {
                var base64Content = await Base64Helper.StorageFileToBase64(image);
                base64Contents.Add(base64Content);
            }
            var imagesRequest = new ImgesRequest(base64Contents, langHints);
            string requestJsonStr = JsonConvert.SerializeObject(imagesRequest);
            var content = new StringContent(requestJsonStr, System.Text.Encoding.UTF8, "application/json");
            var result = await _httpClient.PostAsync(_visionImagesUri, content);
            if (result.StatusCode == System.Net.HttpStatusCode.OK)
            {
                var jsonString = await result.Content.ReadAsStringAsync();
                response = JsonTool.DeserializeJSON<ImagesResponse>(jsonString);
            }
            return response;
        }

        // source : https://cloud.google.com/vision/docs/languages
        public static List<Lang> GetVisionSupportedLanguages()
        {
            var langs = new List<Lang>();
            langs.Add(new Lang("Afrikaans", "af"));
            langs.Add(new Lang("Albanian", "sq"));
            langs.Add(new Lang("Arabic", "ar"));
            langs.Add(new Lang("Armenian", "hy"));
            langs.Add(new Lang("Belarusian", "be"));
            langs.Add(new Lang("Bengali", "bn"));
            langs.Add(new Lang("Bulgarian", "bg"));
            langs.Add(new Lang("Catalan", "ca"));
            langs.Add(new Lang("Chinese-Simplified", "zh"));
            langs.Add(new Lang("Chinese-Traditional", "zh-Hant"));
            langs.Add(new Lang("Croatian", "hr"));
            langs.Add(new Lang("Czech", "cs"));
            langs.Add(new Lang("Danish", "da"));
            langs.Add(new Lang("Dutch", "nl"));
            langs.Add(new Lang("English", "en"));
            langs.Add(new Lang("Estonian", "et"));
            langs.Add(new Lang("Filipino", "tl"));
            langs.Add(new Lang("Finnish", "fi"));
            langs.Add(new Lang("French", "fr"));
            langs.Add(new Lang("German", "de"));
            langs.Add(new Lang("Greek", "el"));
            langs.Add(new Lang("Gujarati", "gu"));
            langs.Add(new Lang("Hebrew", "iw"));
            langs.Add(new Lang("Hindi", "hi"));
            langs.Add(new Lang("Hungarian", "hu"));
            langs.Add(new Lang("Icelandic", "is"));
            langs.Add(new Lang("Indonesian", "id"));
            langs.Add(new Lang("Italian", "it"));
            langs.Add(new Lang("Japanese", "ja"));
            langs.Add(new Lang("Kannada", "kn"));
            langs.Add(new Lang("Khmer", "km"));
            langs.Add(new Lang("Korean", "ko"));
            langs.Add(new Lang("Lao", "lo"));
            langs.Add(new Lang("Latvian", "lv"));
            langs.Add(new Lang("Lithuanian", "lt"));
            langs.Add(new Lang("Macedonian", "mk"));
            langs.Add(new Lang("Malay", "ms"));
            langs.Add(new Lang("Malayalam", "ml"));
            langs.Add(new Lang("Marathi", "mr"));
            langs.Add(new Lang("Nepali", "ne"));
            langs.Add(new Lang("Norwegian", "no"));
            langs.Add(new Lang("Persian", "fa"));
            langs.Add(new Lang("Polish", "pl"));
            langs.Add(new Lang("Portuguese", "pt"));
            langs.Add(new Lang("Punjabi", "pa"));
            langs.Add(new Lang("Romanian", "ro"));
            langs.Add(new Lang("Russian", "ru"));
            langs.Add(new Lang("Serbian", "sr"));
            langs.Add(new Lang("Slovak", "sk"));
            langs.Add(new Lang("Slovenian", "sl"));
            langs.Add(new Lang("Spanish", "es"));
            langs.Add(new Lang("Swedish", "sv"));
            langs.Add(new Lang("Tamil", "ta"));
            langs.Add(new Lang("Telugu", "te"));
            langs.Add(new Lang("Thai", "th"));
            langs.Add(new Lang("Turkish", "tr"));
            langs.Add(new Lang("Ukrainian", "uk"));
            langs.Add(new Lang("Vietnamese", "vi"));
            langs.Add(new Lang("Yiddish", "yi"));
            return langs;
        }

        // source : https://cloud.google.com/translate/docs/languages
        public static List<Lang> GetTranslateSupportedLanguages()
        {
            var langs = new List<Lang>();
            langs.Add(new Lang("Afrikaans", "af"));
            langs.Add(new Lang("Albanian", "sq"));
            langs.Add(new Lang("Amharic", "am"));
            langs.Add(new Lang("Arabic", "ar"));
            langs.Add(new Lang("Armenian", "hy"));
            langs.Add(new Lang("Azerbaijani", "az"));
            langs.Add(new Lang("Basque", "eu"));
            langs.Add(new Lang("Belarusian", "be"));
            langs.Add(new Lang("Bengali", "bn"));
            langs.Add(new Lang("Bosnian", "bs"));
            langs.Add(new Lang("Bulgarian", "bg"));
            langs.Add(new Lang("Catalan", "ca"));
            //langs.Add(new Lang("Cebuano", "ceb"));  // 文件說有支援但其實不能用
            langs.Add(new Lang("Chinese-Simplified", "zh-CN"));
            langs.Add(new Lang("Chinese-Traditional", "zh-TW"));
            langs.Add(new Lang("Corsican", "co"));
            langs.Add(new Lang("Croatian", "hr"));
            langs.Add(new Lang("Czech", "cs"));
            langs.Add(new Lang("Danish", "da"));
            langs.Add(new Lang("Dutch", "nl"));
            langs.Add(new Lang("English", "en"));
            langs.Add(new Lang("Esperanto", "eo"));
            langs.Add(new Lang("Estonian", "et"));
            langs.Add(new Lang("Finnish", "fi"));
            langs.Add(new Lang("French", "fr"));
            langs.Add(new Lang("Frisian", "fy"));
            langs.Add(new Lang("Galician", "gl"));
            langs.Add(new Lang("Georgian", "ka"));
            langs.Add(new Lang("German", "de"));
            langs.Add(new Lang("Greek", "el"));
            langs.Add(new Lang("Guarani", "gn"));
            langs.Add(new Lang("Gujarati", "gu"));
            langs.Add(new Lang("Haitian Creole", "ht"));
            langs.Add(new Lang("Hausa", "ha"));
            //langs.Add(new Lang("Hawaiian", "haw"));   // 文件說有支援但其實不能用
            langs.Add(new Lang("Hebrew", "he"));
            langs.Add(new Lang("Hindi", "hi"));
            //langs.Add(new Lang("Hmong", "hmn"));   // 文件說有支援但其實不能用
            langs.Add(new Lang("Hungarian", "hu"));
            langs.Add(new Lang("Icelandic", "is"));
            langs.Add(new Lang("Igbo", "ig"));
            langs.Add(new Lang("Indonesian", "id"));
            langs.Add(new Lang("Irish", "ga"));
            langs.Add(new Lang("Italian", "it"));
            langs.Add(new Lang("Japanese", "ja"));
            langs.Add(new Lang("Javanese", "jv"));
            langs.Add(new Lang("Kannada", "kn"));
            langs.Add(new Lang("Kazakh", "kk"));
            langs.Add(new Lang("Khmer", "km"));
            langs.Add(new Lang("Kinyarwanda", "rw"));
            langs.Add(new Lang("Korean", "ko"));
            langs.Add(new Lang("Kurdish", "ku"));
            langs.Add(new Lang("Kyrgyz", "ky"));
            langs.Add(new Lang("Lao", "lo"));
            langs.Add(new Lang("Latin", "la"));
            langs.Add(new Lang("Latvian", "lv"));
            langs.Add(new Lang("Lithuanian", "lt"));
            langs.Add(new Lang("Luxembourgish", "lb"));
            langs.Add(new Lang("Macedonian", "mk"));
            langs.Add(new Lang("Malagasy", "mg"));
            langs.Add(new Lang("Malay", "ms"));
            langs.Add(new Lang("Malayalam", "ml"));
            langs.Add(new Lang("Maltese", "mt"));
            langs.Add(new Lang("Maori", "mi"));
            langs.Add(new Lang("Marathi", "mr"));
            langs.Add(new Lang("Mongolian", "mn"));
            langs.Add(new Lang("Myanmar (Burmese)", "my"));
            langs.Add(new Lang("Nepali", "ne"));
            langs.Add(new Lang("Norwegian", "no"));
            langs.Add(new Lang("Nyanja (Chichewa)", "ny"));
            langs.Add(new Lang("Odia (Oriya)", "or"));
            langs.Add(new Lang("Pashto", "ps"));
            langs.Add(new Lang("Persian", "fa"));
            langs.Add(new Lang("Polish", "pl"));
            langs.Add(new Lang("Portuguese", "pt"));
            langs.Add(new Lang("Punjabi", "pa"));
            langs.Add(new Lang("Romanian", "ro"));
            langs.Add(new Lang("Russian", "ru"));
            langs.Add(new Lang("Samoan", "sm"));
            langs.Add(new Lang("Sanskrit", "sa"));
            langs.Add(new Lang("Scots Gaelic", "gd"));
            langs.Add(new Lang("Serbian", "sr"));
            langs.Add(new Lang("Sesotho", "st"));
            langs.Add(new Lang("Shona", "sn"));
            langs.Add(new Lang("Sindhi", "sd"));
            langs.Add(new Lang("Sinhala (Sinhalese)	", "si"));
            langs.Add(new Lang("Slovak", "sk"));
            langs.Add(new Lang("Slovenian", "sl"));
            langs.Add(new Lang("Somali", "so"));
            langs.Add(new Lang("Spanish", "es"));
            langs.Add(new Lang("Sundanese", "su"));
            langs.Add(new Lang("Swahili", "sw"));
            langs.Add(new Lang("Swedish", "sv"));
            langs.Add(new Lang("Tagalog (Filipino)", "tl"));
            langs.Add(new Lang("Tajik", "tg"));
            langs.Add(new Lang("Tamil", "ta"));
            langs.Add(new Lang("Tatar", "tt"));
            langs.Add(new Lang("Telugu", "te"));
            langs.Add(new Lang("Thai", "th"));
            langs.Add(new Lang("Turkish", "tr"));
            langs.Add(new Lang("Turkmen", "tk"));
            langs.Add(new Lang("Ukrainian", "uk"));
            langs.Add(new Lang("Urdu", "ur"));
            langs.Add(new Lang("Uyghur", "ug"));
            langs.Add(new Lang("Uzbek", "uz"));
            langs.Add(new Lang("Vietnamese", "vi"));
            langs.Add(new Lang("Welsh", "cy"));
            langs.Add(new Lang("Xhosa", "xh"));
            langs.Add(new Lang("Yiddish", "yi"));
            langs.Add(new Lang("Yoruba", "yo"));
            langs.Add(new Lang("Zulu", "zu"));
            return langs;
        }
    }
}