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Add Supabase Connector integration and configuration support
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‎.gitignore‎

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@@ -61,3 +61,5 @@ TestResults/
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*.dylib
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*.dll
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*.so
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.env

‎demos/CommandLine/.env.template‎

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SUPABASE_URL=your-supabase-url
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SUPABASE_ANON_KEY=your_anon_key_here
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POWERSYNC_URL=your-powersync-url

‎demos/CommandLine/CommandLine.csproj‎

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@@ -13,8 +13,10 @@
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Dotenv.Net" Version="3.2.1" />
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<PackageReference Include="Microsoft.Data.Sqlite" Version="9.0.1" />
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<PackageReference Include="Spectre.Console" Version="0.49.1" />
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<PackageReference Include="supabase" Version="1.1.1" />
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</ItemGroup>
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‎demos/CommandLine/CommandLine.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.5.2.0
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CommandLine", "CommandLine.csproj", "{6BB9F16E-3825-DE76-1286-9E5E2406710D}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{6BB9F16E-3825-DE76-1286-9E5E2406710D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{6BB9F16E-3825-DE76-1286-9E5E2406710D}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{6BB9F16E-3825-DE76-1286-9E5E2406710D}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{6BB9F16E-3825-DE76-1286-9E5E2406710D}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {A5588511-5909-4F05-80EB-09A56805607C}
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EndGlobalSection
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EndGlobal

‎demos/CommandLine/Demo.cs‎

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@@ -1,5 +1,6 @@
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namespace CommandLine;
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using CommandLine.Utils;
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using PowerSync.Common.Client;
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using Spectre.Console;
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@@ -16,7 +17,11 @@ static async Task Main()
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});
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await db.Init();
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var connector = new NodeConnector();
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//var connector = new NodeConnector();
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var config = new SupabaseConfig();
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var connector = new SupabaseConnector(config);
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await connector.Login("[email protected]", "Dean1998");
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var table = new Table()
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.AddColumn("id")
@@ -47,6 +52,12 @@ static async Task Main()
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}
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});
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// await db.Execute("insert into lists (id, name, owner_id, created_at) values (uuid(), 'New User33', ?, datetime())", [connector.UserId]);
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await db.Execute(
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"UPDATE lists SET name = ?, created_at = datetime() WHERE owner_id = ? and id = ?", ["update CHCHCHCHCH" , connector.UserId, "0bf55412-d35b-4814-ade9-daea4865df96"]
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);
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var _ = Task.Run(async () =>
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{
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while (running)

‎demos/CommandLine/Helpers/SupabasePatchHelper.cs‎

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namespace CommandLine.Helpers;
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using System.Linq.Expressions;
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using Newtonsoft.Json;
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using Supabase.Postgrest.Interfaces;
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using Supabase.Postgrest.Models;
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public static class SupabasePatchHelper
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{
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public static IPostgrestTable<T> ApplySet<T>(
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IPostgrestTable<T> table,
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string jsonPropertyName,
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object value
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) where T : BaseModel, new()
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{
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// Find the property that matches the JsonProperty name
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var property = typeof(T)
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.GetProperties()
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.FirstOrDefault(p =>
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p.GetCustomAttributes(typeof(JsonPropertyAttribute), true)
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.FirstOrDefault() is JsonPropertyAttribute attr &&
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attr.PropertyName == jsonPropertyName);
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if (property == null)
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throw new ArgumentException($"'{jsonPropertyName}' is not a valid property on type '{typeof(T).Name}'");
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var parameter = Expression.Parameter(typeof(T), "x");
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var propertyAccess = Expression.Property(parameter, property.Name);
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var converted = Expression.Convert(propertyAccess, typeof(object));
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var lambda = Expression.Lambda<Func<T, object>>(converted, parameter);
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return table.Set(lambda, value);
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}
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}

‎demos/CommandLine/Models/List.cs‎

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namespace CommandLine.Models;
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using Newtonsoft.Json;
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using Supabase.Postgrest.Attributes;
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using Supabase.Postgrest.Models;
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[Table("lists")]
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class List : BaseModel
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{
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[PrimaryKey("id")]
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[JsonProperty("id")]
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public string Id { get; set; }
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[Column("created_at")]
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[JsonProperty("created_at")]
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public string CreatedAt { get; set; }
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[Column("name")]
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[JsonProperty("name")]
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public string Name { get; set; }
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[Column("owner_id")]
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[JsonProperty("owner_id")]
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public string OwnerId { get; set; }
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}

‎demos/CommandLine/Models/Todos.cs‎

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namespace CommandLine.Models;
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using Newtonsoft.Json;
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using Supabase.Postgrest.Attributes;
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using Supabase.Postgrest.Models;
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[Table("todos")]
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class Todo : BaseModel
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{
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[PrimaryKey("id")]
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[JsonProperty("id")]
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public string Id { get; set; }
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[Column("list_id")]
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[JsonProperty("list_id")]
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public string ListId { get; set; }
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[Column("created_at")]
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[JsonProperty("created_at")]
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public string CreatedAt { get; set; }
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[Column("completed_at")]
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[JsonProperty("completed_at")]
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public string CompletedAt { get; set; }
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[Column("description")]
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[JsonProperty("description")]
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public string Description { get; set; }
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[Column("created_by")]
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[JsonProperty("created_by")]
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public string CreatedBy { get; set; }
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[Column("completed_by")]
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[JsonProperty("completed_by")]
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public string CompletedBy { get; set; }
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[Column("completed")]
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[JsonProperty("completed")]
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public int Completed { get; set; }
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}

‎demos/CommandLine/README.md‎

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1-
# PowerSync CLI demo app
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# PowerSync CLI Demo App
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33
This demo features a CLI-based table view that stays *live* using a *watch query*, ensuring the data updates in real time as changes occur.
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To run this demo, you need to have one of our Node.js self-host demos ([Postgres](https://github.com/powersync-ja/self-host-demo/tree/main/demos/nodejs) | [MongoDB](https://github.com/powersync-ja/self-host-demo/tree/main/demos/nodejs-mongodb) | [MySQL](https://github.com/powersync-ja/self-host-demo/tree/main/demos/nodejs-mysql)) running, as it provides the PowerSync server that this CLI's PowerSync SDK connects to.
@@ -9,6 +9,28 @@ Changes made to the backend's source DB or to the self-hosted web UI will be syn
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This essentially uses anonymous authentication. A random user ID is generated and stored in local storage. The backend returns a valid token which is not linked to a specific user. All data is synced to all users.
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## Connection Options
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By default, this demo uses the NodeConnector for connecting to the PowerSync server. However, you can swap this out with the SupabaseConnector if needed:
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1. Copy the `.env.template` file to a new `.env` file:
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```bash
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# On Linux/macOS
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cp .env.template .env
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# On Windows
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copy .env.template .env
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```
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2. Replace the necessary fields in the `.env` file with your Supabase and PowerSync credentials:
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```
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SUPABASE_URL=your_supabase_url
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SUPABASE_ANON_KEY=your_supabase_anon_key
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POWERSYNC_URL=your_powersync_url
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```
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3. Update your connector configuration to use SupabaseConnector instead of NodeConnector
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## Getting Started
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In the repo root, run the following to download the PowerSync extension:
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```bash
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dotnet run Demo
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```
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```

‎demos/CommandLine/SupabaseConnector.cs‎

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namespace CommandLine;
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using CommandLine.Helpers;
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using CommandLine.Models;
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using CommandLine.Utils;
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using Newtonsoft.Json;
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using PowerSync.Common.Client;
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using PowerSync.Common.Client.Connection;
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using PowerSync.Common.DB.Crud;
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using Supabase;
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using Supabase.Gotrue;
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using Supabase.Postgrest.Exceptions;
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using Supabase.Postgrest.Interfaces;
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public class SupabaseConnector : IPowerSyncBackendConnector
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{
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private readonly Supabase.Client _supabase;
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private readonly SupabaseConfig _config;
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private Session? _currentSession;
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public Session? CurrentSession
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{
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get => _currentSession;
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set
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{
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_currentSession = value;
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if (_currentSession?.User?.Id != null)
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{
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UserId = _currentSession.User.Id;
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}
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}
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}
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public string UserId { get; private set; } = "";
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public bool Ready { get; private set; }
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public SupabaseConnector(SupabaseConfig config)
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{
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_config = config;
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_supabase = new Supabase.Client(config.SupabaseUrl, config.SupabaseAnonKey, new SupabaseOptions
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{
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AutoConnectRealtime = true
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});
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_ = _supabase.InitializeAsync();
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}
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public async Task Login(string email, string password)
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{
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var response = await _supabase.Auth.SignInWithPassword(email, password);
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if (response?.User == null || response.AccessToken == null)
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{
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throw new Exception("Login failed.");
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}
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CurrentSession = response;
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}
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public Task<PowerSyncCredentials?> FetchCredentials()
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{
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PowerSyncCredentials? credentials = null;
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var sessionResponse = _supabase.Auth.CurrentSession;
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if (sessionResponse?.AccessToken != null)
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{
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credentials = new PowerSyncCredentials(_config.PowerSyncUrl, sessionResponse.AccessToken);
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}
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return Task.FromResult(credentials);
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}
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public async Task UploadData(IPowerSyncDatabase database)
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{
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var transaction = await database.GetNextCrudTransaction();
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if (transaction == null) return;
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try
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{
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foreach (var op in transaction.Crud)
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{
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switch (op.Op)
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{
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case UpdateType.PUT:
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if (op.Table.ToLower().Trim() == "lists")
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{
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var model = JsonConvert.DeserializeObject<List>(JsonConvert.SerializeObject(op.OpData)) ?? throw new InvalidOperationException("Model is null.");
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model.Id = op.Id;
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await _supabase.From<List>().Upsert(model);
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}
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else if (op.Table.ToLower().Trim() == "todos")
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{
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var model = JsonConvert.DeserializeObject<Todo>(JsonConvert.SerializeObject(op.OpData)) ?? throw new InvalidOperationException("Model is null.");
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model.Id = op.Id;
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await _supabase.From<Todo>().Upsert(model);
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}
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break;
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case UpdateType.PATCH:
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if (op.OpData is null || op.OpData.Count == 0)
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{
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Console.WriteLine("PATCH skipped: No data to update.");
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break;
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}
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if (op.Table.ToLower().Trim() == "lists")
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{
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IPostgrestTable<List> updateQuery = _supabase
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.From<List>()
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.Where(x => x.Id == op.Id);
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foreach (var kvp in op.OpData)
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{
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updateQuery = SupabasePatchHelper.ApplySet(updateQuery, kvp.Key, kvp.Value);
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}
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_ = await updateQuery.Update();
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}
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else if (op.Table.ToLower().Trim() == "todos")
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{
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IPostgrestTable<Todo> updateQuery = _supabase
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.From<Todo>()
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.Where(x => x.Id == op.Id);
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foreach (var kvp in op.OpData)
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{
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updateQuery = SupabasePatchHelper.ApplySet(updateQuery, kvp.Key, kvp.Value);
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}
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_ = await updateQuery.Update();
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}
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break;
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case UpdateType.DELETE:
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if (op.Table.ToLower().Trim() == "lists")
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{
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await _supabase
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.From<List>()
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.Where(x => x.Id == op.Id)
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.Delete();
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}
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else if (op.Table.ToLower().Trim() == "todos")
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{
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await _supabase
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.From<Todo>()
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.Where(x => x.Id == op.Id)
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.Delete();
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}
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break;
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default:
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throw new InvalidOperationException("Unknown operation type.");
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}
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}
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await transaction.Complete();
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}
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catch (PostgrestException ex)
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{
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Console.WriteLine($"Error during upload: {ex.Message}");
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throw;
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}
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}
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}

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