Add basic API, only with system endpoints

PluralKit.API/Startup.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.HttpsPolicy;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using NodaTime;
+using NodaTime.Serialization.JsonNet;
+using Npgsql;
+
+namespace PluralKit.API
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        // This method gets called by the runtime. Use this method to add services to the container.
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddMvc(opts => { })
+                .SetCompatibilityVersion(CompatibilityVersion.Version_2_2)
+                .AddJsonOptions(opts => { opts.SerializerSettings.BuildSerializerSettings(); });
+            
+            services
+                .AddTransient<SystemStore>()
+                .AddTransient<MemberStore>()
+                .AddTransient<SwitchStore>()
+                .AddTransient<MessageStore>()
+                
+                .AddScoped<TokenAuthService>()
+                
+                .AddTransient(_ => Configuration.GetSection("PluralKit").Get<CoreConfig>() ?? new CoreConfig())
+                .AddScoped<IDbConnection>(svc =>
+                {
+                    var conn = new NpgsqlConnection(svc.GetRequiredService<CoreConfig>().Database);
+                    conn.Open();
+                    return conn;
+                });
+        }
+
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
+        {
+            if (env.IsDevelopment())
+            {
+                app.UseDeveloperExceptionPage();
+            }
+            else
+            {
+                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
+                //app.UseHsts();
+            }
+
+            app.UseHttpsRedirection();
+            app.UseMiddleware<TokenAuthService>();
+            app.UseMvc();
+        }
+    }
+}