chore: added smappee api

smappee-api/ChargerOptions.cs

@@ -0,0 +1,36 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace options;
+
+internal class ChargerOptions
+{
+    public const string Name = "CHARGER";
+
+    [Required]
+    [ConfigurationKeyName("URL")]
+    public required Uri Url { get; init; }
+
+    [Required]
+    [ConfigurationKeyName("CLIENT_ID")]
+    public required string ClientId { get; init; }
+
+    [Required]
+    [ConfigurationKeyName("CLIENT_SECRET")]
+    public required string ClientSecret { get; init; }
+
+    [Required]
+    [ConfigurationKeyName("USERNAME")]
+    public required string UserName { get; init; }
+
+    [Required]
+    [ConfigurationKeyName("PASSWORD")]
+    public required string Password { get; init; }
+
+    [Required]
+    [ConfigurationKeyName("STATION")]
+    public required string ChargingStation { get; init; }
+
+    [Required]
+    [ConfigurationKeyName("CONNECTOR")]
+    public required int Connector { get; init; }
+}

smappee-api/Program.cs

@@ -0,0 +1,43 @@
+using enums;
+using interfaces;
+using options;
+using services;
+
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddHttpClient();
+builder.Services.AddRedaction();
+builder.Services.AddExtendedHttpClientLogging(
+    builder.Configuration.GetSection("HttpClientLogging"));
+
+builder
+    .Services.AddOptions<ChargerOptions>()
+    .Bind(builder.Configuration.GetSection(ChargerOptions.Name))
+    .ValidateDataAnnotations();
+builder.Services.AddSingleton<IBearerTokenService, SmappeeTokenService>();
+builder.Services.AddScoped<IChargerService, SmappeeChargerService>();
+
+var app = builder.Build();
+
+app.MapPost(
+        "/enable",
+        async (IChargerService chargerService) =>
+        {
+            await chargerService.ExecuteRequest(ChargerRequests.Enable);
+            return;
+        }
+    )
+    .WithName("Enable");
+
+app.MapPost(
+        "/disable",
+        () =>
+            async (IChargerService chargerService) =>
+            {
+                await chargerService.ExecuteRequest(ChargerRequests.Disable);
+                return;
+            }
+    )
+    .WithName("Disable");
+
+app.Run();

smappee-api/Properties/launchSettings.json

@@ -0,0 +1,23 @@
+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "http://localhost:5057",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "https://localhost:7028;http://localhost:5057",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

smappee-api/appsettings.Development.json

@@ -0,0 +1,32 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Information"
+    }
+  },
+  "CHARGER": {
+    "URL": "https://app1pub.smappee.net",
+    "CLIENT_ID": "5700002178",
+    "CLIENT_SECRET": "cPcRKc26ul",
+    "USERNAME": "serruysw@gmail.com",
+    "PASSWORD": "uAfUhnBXkZeqs$@7ca7P3M9QE6z0Dg1N0cbz&",
+    "STATION": "6230003897",
+    "CONNECTOR": 1
+  },
+  "HttpClientLogging": {
+    "LogRequestStart": false,
+    "LogBody": true,
+    "BodySizeLimit": 32768,
+    "BodyReadTimeout": "00:00:01",
+    "RequestHeadersDataClasses": {
+      "User-Agent": "None",
+      "Content-Type": "None"
+    },
+    "ResponseHeadersDataClasses": {
+      "Content-Type": "None"
+    },
+    "RequestPathLoggingMode": "Formatted",
+    "RequestPathParameterRedactionMode": "Strict"
+  }
+}

smappee-api/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}

smappee-api/enums/ChargerRequests.cs

@@ -0,0 +1,7 @@
+namespace enums;
+
+internal enum ChargerRequests
+{
+    Enable,
+    Disable
+}

smappee-api/interfaces/IBearerTokenService.cs

@@ -0,0 +1,5 @@
+namespace interfaces;
+
+internal interface IBearerTokenService {
+	ValueTask<string> GetToken(bool forceNewToken);
+}

smappee-api/interfaces/IChargerService.cs

@@ -0,0 +1,8 @@
+using enums;
+
+namespace interfaces;
+
+internal interface IChargerService
+{
+    Task ExecuteRequest(ChargerRequests request);
+}

smappee-api/services/SmappeeChargerService.cs

@@ -0,0 +1,51 @@
+using enums;
+using interfaces;
+using Microsoft.Extensions.Options;
+using options;
+
+namespace services;
+
+internal class SmappeeChargerService : IChargerService
+{
+    private readonly ChargerOptions options;
+    private readonly IBearerTokenService tokenService;
+    private readonly IHttpClientFactory httpClientFactory;
+
+    public SmappeeChargerService(
+        IOptions<ChargerOptions> options,
+        IBearerTokenService tokenService,
+        IHttpClientFactory httpClientFactory
+    )
+    {
+        ArgumentNullException.ThrowIfNull(tokenService);
+        this.options = options?.Value ?? throw new ArgumentNullException(nameof(options));
+        this.tokenService = tokenService;
+        this.httpClientFactory =
+            httpClientFactory ?? throw new ArgumentNullException(nameof(httpClientFactory));
+    }
+
+    public async Task ExecuteRequest(ChargerRequests request)
+    {
+        var token = await tokenService.GetToken(false);
+        var httpClient = httpClientFactory.CreateClient("smappee");
+        httpClient.BaseAddress = options.Url;
+        httpClient.DefaultRequestHeaders.Add("Authorization", $"Bearer {token}");
+        var response = request switch
+        {
+            ChargerRequests.Enable => await httpClient.PutAsJsonAsync<SmappeeRequestBody>(
+                $"/dev/v3/chargingstations/${options.ChargingStation}/connectors/{options.Connector}/mode",
+                new SmappeeRequestBody("NORMAL", new Limit("AMPERE", 6))
+            ),
+            ChargerRequests.Disable => await httpClient.PutAsJsonAsync(
+                "/dev/v3/chargingstations",
+                new SmappeeRequestBody("PAUSED", null)
+            ),
+            _ => throw new NotImplementedException(),
+        };
+        response.EnsureSuccessStatusCode();
+    }
+
+    record SmappeeRequestBody(string mode, Limit? limit);
+
+    record Limit(string unit, int value);
+}

smappee-api/services/SmappeeTokenService.cs

@@ -0,0 +1,73 @@
+using interfaces;
+using Microsoft.Extensions.Options;
+using options;
+
+namespace services;
+
+internal class SmappeeTokenService : IBearerTokenService
+{
+    private readonly ChargerOptions options;
+    private readonly IHttpClientFactory httpClientFactory;
+
+    private TokenData? tokenData = null;
+
+    public SmappeeTokenService(
+        IOptions<ChargerOptions> options,
+        IHttpClientFactory httpClientFactory
+    )
+    {
+        this.options = options?.Value ?? throw new ArgumentNullException(nameof(options));
+        this.httpClientFactory =
+            httpClientFactory ?? throw new ArgumentNullException(nameof(httpClientFactory));
+    }
+
+    public async ValueTask<string> GetToken(bool forceNewToken)
+    {
+        if (
+            tokenData == null
+            || tokenData.Expiration < DateTime.UtcNow.AddSeconds(-10)
+            || forceNewToken
+        )
+        {
+            tokenData = await RequestNewToken();
+        }
+        return tokenData.Token;
+    }
+
+    private async Task<TokenData> RequestNewToken()
+    {
+        var httpClient = httpClientFactory.CreateClient("smappeeTokenService");
+        httpClient.BaseAddress = options.Url;
+
+        var result = await httpClient.PostAsJsonAsync<TokenRequestBody>(
+            "/dev/v3/oauth2/token",
+            new TokenRequestBody(
+                "password",
+                options.ClientId,
+                options.ClientSecret,
+                options.UserName,
+                options.Password
+            )
+        );
+        result.EnsureSuccessStatusCode();
+        var tokenResponse =
+            await result.Content.ReadFromJsonAsync<TokenResponse>()
+            ?? throw new InvalidOperationException("Token could not be fetched");
+        return new TokenData(
+            tokenResponse.access_token,
+            DateTime.UtcNow.AddSeconds(tokenResponse.expires_in)
+        );
+    }
+
+    record TokenRequestBody(
+        string grant_type,
+        string client_id,
+        string client_secret,
+        string username,
+        string password
+    );
+
+    record TokenResponse(string access_token, int expires_in);
+
+    record TokenData(string Token, DateTime Expiration);
+}

smappee-api/smappee-api.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <RootNamespace>smappee_api</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.10" />
+    <PackageReference Include="Microsoft.Extensions.Compliance.Redaction" Version="10.9.0" />
+    <PackageReference Include="Microsoft.Extensions.Http.Diagnostics" Version="10.9.0" />
+  </ItemGroup>
+
+</Project>

smappee-api/smappee-api.http

@@ -0,0 +1,6 @@
+@smappee_api_HostAddress = http://localhost:5057
+
+GET {{smappee_api_HostAddress}}/weatherforecast/
+Accept: application/json
+
+###