Initial commit

QuickChart/QuickChart.cs

@@ -0,0 +1,136 @@
+using System;
+using System.Collections.Specialized;
+using System.Web;
+using System.Net.Http;
+using System.Text;
+using System.Text.Json;
+using System.IO;
+
+namespace QuickChart
+{
+    internal class QuickChartShortUrlResponse
+    {
+#pragma warning disable IDE1006 // Naming Styles
+        public bool status { get; set; }
+        public string url { get; set; }
+#pragma warning restore IDE1006 // Naming Styles
+    }
+
+    public class Chart
+    {
+        public int Width { get; set; }
+        public int Height { get; set; }
+        public double DevicePixelRatio { get; set; }
+        public string BackgroundColor { get; set; }
+        public string Key { get; set; }
+        public string Config { get; set; }
+
+        public string Protocol { get; set; }
+        public string Host { get; set; }
+        public int Port { get; set; }
+
+        private static readonly HttpClient Client = new HttpClient();
+
+        public Chart()
+        {
+            Width = 500;
+            Height = 300;
+            DevicePixelRatio = 1.0;
+            BackgroundColor = "transparent";
+
+            Protocol = "https";
+            Host = "quickchart.io";
+            Port = 443;
+        }
+
+        public string GetUrl()
+        {
+            if (Config == null)
+            {
+                throw new NullReferenceException("You must set Config on the QuickChart object before generating a URL");
+            }
+
+            NameValueCollection queryString = HttpUtility.ParseQueryString(string.Empty);
+            queryString.Add("w", Width.ToString());
+            queryString.Add("h", Height.ToString());
+            queryString.Add("devicePixelRatio", DevicePixelRatio.ToString());
+            queryString.Add("bkg", BackgroundColor);
+            queryString.Add("c", Config);
+
+            return $"{Protocol}://{Host}:{Port}/chart?{queryString}";
+        }
+
+        public string GetShortUrl()
+        {
+            if (Config == null)
+            {
+                throw new NullReferenceException("You must set Config on the QuickChart object before generating a URL");
+            }
+
+            String json = JsonSerializer.Serialize(new
+            {
+                width = Width,
+                height = Height,
+                backgroundColor = BackgroundColor,
+                devicePixelRatio = DevicePixelRatio,
+                chart = Config,
+            });
+
+            // TODO(ian): key
+
+            string url = $"{Protocol}://{Host}:{Port}/chart/create";
+
+            HttpResponseMessage response = Client.PostAsync(
+                url,
+                new StringContent(json, Encoding.UTF8, "application/json")
+            ).Result;
+
+            if (!response.IsSuccessStatusCode)
+            {
+                throw new Exception("Unsuccessful response from API");
+            }
+
+            string responseText = response.Content.ReadAsStringAsync().Result;
+            QuickChartShortUrlResponse result = JsonSerializer.Deserialize<QuickChartShortUrlResponse>(responseText);
+            return result.url;
+        }
+
+        public byte[] ToByteArray()
+        {
+            if (Config == null)
+            {
+                throw new NullReferenceException("You must set Config on the QuickChart object before generating a URL");
+            }
+
+            String json = JsonSerializer.Serialize(new
+            {
+                width = Width,
+                height = Height,
+                backgroundColor = BackgroundColor,
+                devicePixelRatio = DevicePixelRatio,
+                chart = Config,
+            });
+
+            // TODO(ian): key
+
+            string url = $"{Protocol}://{Host}:{Port}/chart";
+
+            HttpResponseMessage response = Client.PostAsync(
+                url,
+                new StringContent(json, Encoding.UTF8, "application/json")
+            ).Result;
+
+            if (!response.IsSuccessStatusCode)
+            {
+                throw new Exception("Unsuccessful response from API");
+            }
+
+            return response.Content.ReadAsByteArrayAsync().Result;
+        }
+
+        public void ToFile(string filePath)
+        {
+            File.WriteAllBytes(filePath, this.ToByteArray());
+        }
+    }
+}

QuickChart/QuickChart.csproj

@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Library</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+</Project>