create RestApi project

ComputerShop.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34511.84
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputerShopRestApi", "ComputerShopRestApi\ComputerShopRestApi.csproj", "{2C36A31D-FD74-4E83-A271-1F300D008E26}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2C36A31D-FD74-4E83-A271-1F300D008E26}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2C36A31D-FD74-4E83-A271-1F300D008E26}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2C36A31D-FD74-4E83-A271-1F300D008E26}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2C36A31D-FD74-4E83-A271-1F300D008E26}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {9414A502-1CCD-466A-9FFA-21B0297A8ECA}
+	EndGlobalSection
+EndGlobal

ComputerShopRestApi/ComputerShopRestApi.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0" />
+  </ItemGroup>
+
+</Project>

ComputerShopRestApi/Controllers/WeatherForecastController.cs

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+using Microsoft.AspNetCore.Mvc;
+
+namespace ComputerShopRestApi.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class WeatherForecastController : ControllerBase
+    {
+        private static readonly string[] Summaries = new[]
+        {
+            "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
+        };
+
+        private readonly ILogger<WeatherForecastController> _logger;
+
+        public WeatherForecastController(ILogger<WeatherForecastController> logger)
+        {
+            _logger = logger;
+        }
+
+        [HttpGet(Name = "GetWeatherForecast")]
+        public IEnumerable<WeatherForecast> Get()
+        {
+            return Enumerable.Range(1, 5).Select(index => new WeatherForecast
+            {
+                Date = DateTime.Now.AddDays(index),
+                TemperatureC = Random.Shared.Next(-20, 55),
+                Summary = Summaries[Random.Shared.Next(Summaries.Length)]
+            })
+            .ToArray();
+        }
+    }
+}

ComputerShopRestApi/Program.cs

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+var Builder = WebApplication.CreateBuilder(args);
+
+Builder.Services.AddControllers();
+Builder.Services.AddEndpointsApiExplorer();
+Builder.Services.AddSwaggerGen();
+
+var App = Builder.Build();
+
+if (App.Environment.IsDevelopment())
+{
+    App.UseSwagger();
+    App.UseSwaggerUI();
+}
+
+App.UseHttpsRedirection();
+App.UseAuthorization();
+App.MapControllers();
+
+App.Run();

ComputerShopRestApi/Properties/launchSettings.json

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+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:32604",
+      "sslPort": 44351
+    }
+  },
+  "profiles": {
+    "ComputerShopRestApi": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "https://localhost:7223;http://localhost:5055",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

ComputerShopRestApi/WeatherForecast.cs

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+namespace ComputerShopRestApi
+{
+    public class WeatherForecast
+    {
+        public DateTime Date { get; set; }
+
+        public int TemperatureC { get; set; }
+
+        public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
+
+        public string? Summary { get; set; }
+    }
+}

ComputerShopRestApi/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

ComputerShopRestApi/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}