csharp-aspnet-api [VILLEGAS]

StudentApi/Controllers/StudentController.cs

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+using Microsoft.AspNetCore.Mvc;
+using Models;
+using Services.Interfaces;
+
+namespace Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+public class StudentController : ControllerBase
+{
+    private readonly IStudentService _studentService;
+
+    public StudentController(IStudentService studentService)
+    {
+        _studentService = studentService;
+    }
+
+    // GET: api/student
+    [HttpGet]
+    public IActionResult GetAllStudents()
+    {
+        var allStudents = _studentService.GetAllStudents();
+
+        if (allStudents == null || allStudents.Count == 0)
+        {
+            return NotFound("No Student Found");
+        }
+
+        return Ok(allStudents);
+    }
+
+    // GET: api/student/{id}
+    [HttpGet("{id}")]
+    public IActionResult GetStudentById(long id)
+    {
+        var foundStudent = _studentService.GetStudentById(id);
+
+        if (foundStudent == null)
+        {
+            return NotFound($"Student {id} is not found");
+        }
+
+        return Ok(foundStudent);
+    }
+
+    // POST: api/student
+    [HttpPost]
+    public IActionResult AddStudent([FromBody] Student student)
+    {
+        if (string.IsNullOrWhiteSpace(student.Name) || string.IsNullOrWhiteSpace(student.Course))
+        {
+            return BadRequest("Name and course are required");
+        }
+
+        Student savedStudent = _studentService.AddStudent(student);
+        return Ok(savedStudent);
+    }
+
+    // PUT: api/student/{id}
+    [HttpPut("{id}")]
+    public IActionResult UpdateStudent(long id, [FromBody] Student student)
+    {
+        if (string.IsNullOrEmpty(student.Name) || string.IsNullOrEmpty(student.Course))
+            return BadRequest("Incomplete Fields!");
+
+        student.StudentId = id;
+
+
+        var updatedStudent = _studentService.UpdateStudent(student);
+
+        if (updatedStudent == null)
+        {
+            return NotFound($"Student {id} not found");
+        }
+
+        return Ok(updatedStudent);
+    }
+
+    // DELETE: api/student/{id}
+    [HttpDelete("{id}")]
+    public IActionResult DeleteStudent(long id)
+    {
+        var deleted = _studentService.DeleteStudent(id);
+
+        if (!deleted)
+        {
+            return NotFound($"Student {id} is not found");
+        }
+
+        return NoContent();
+    }
+}

StudentApi/Models/Student.cs

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+namespace Models;
+
+public class Student
+{
+    public long StudentId { get; set; }
+    public string Name { get; set; } = null!;
+    public string Course { get; set; } = null!;
+
+    // Default constructor
+    public Student()
+    {
+    }
+
+    // Constructor with parameters
+    public Student(long studentId, string name, string course)
+    {
+        StudentId = studentId;
+        Name = name;
+        Course = course;
+    }
+
+}

StudentApi/Program.cs

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+using Models;
+using Services.Interfaces;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
+builder.Services.AddOpenApi();
+
+// For Dependency Injection  (Uses a single instance of dictionary; which is the in-memory studentDb)
+builder.Services.AddSingleton<IStudentService, StudentService>();
+
+// For Controller
+builder.Services.AddControllers();
+
+var app = builder.Build();
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+
+{
+    app.MapOpenApi();
+
+}
+
+app.UseHttpsRedirection();
+app.MapControllers();
+
+app.Run();
+
+
+
+
+

StudentApi/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:9090",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "https://localhost:7118;http://localhost:9090",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

StudentApi/Services/Implementations/StudentService.cs

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+using Models;
+using Services.Interfaces;
+
+public class StudentService : IStudentService
+{
+    // In-memory db
+    private readonly Dictionary<long, Student> studentsDB = new Dictionary<long, Student>();
+
+    long studentCount = 1;
+
+
+    public Student AddStudent(Student student)
+    {
+
+        if (student.StudentId == 0)
+        {
+            student.StudentId = studentCount++;
+        }
+
+        long studentId = student.StudentId;
+        studentsDB[studentId] = student;
+
+        return student; 
+    }
+
+    public List<Student> GetAllStudents()
+    {
+        return studentsDB.Values.ToList();
+    }
+
+    public Student? GetStudentById(long id)
+    {
+        Student? foundStudent = studentsDB.TryGetValue(id, out Student? student) ? student : null;
+
+        if (foundStudent == null)
+        {
+            return null;
+        }
+
+        return foundStudent;
+    }
+
+    public Student? UpdateStudent(Student student)
+    {
+        long studentId = student.StudentId;
+
+        if (!studentsDB.ContainsKey(studentId))
+        {
+            return null;
+        }
+
+        if (string.IsNullOrWhiteSpace(student.Name) || string.IsNullOrWhiteSpace(student.Course))
+        {
+            return null;
+        }
+
+        studentsDB[studentId] = student;
+        return student;
+    }
+
+    public bool DeleteStudent(long id)
+    {
+        return studentsDB.Remove(id);
+    }
+}

StudentApi/Services/Interfaces/IStudentService.cs

@@ -0,0 +1,15 @@
+using Models;
+
+namespace Services.Interfaces;
+
+public interface IStudentService
+{
+    Student AddStudent(Student student);
+    List<Student> GetAllStudents();
+    Student? GetStudentById(long id);
+
+    Student? UpdateStudent(Student student);
+    bool DeleteStudent(long id);
+
+
+}

StudentApi/StudentApi.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.2" />
+  </ItemGroup>
+
+</Project>

StudentApi/StudentApi.http

@@ -0,0 +1,6 @@
+@StudentApi_HostAddress = http://localhost:5189
+
+GET {{StudentApi_HostAddress}}/weatherforecast/
+Accept: application/json
+
+###

StudentApi/appsettings.Development.json

@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

StudentApi/appsettings.json

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

StudentApi/bin/Debug/net9.0/StudentApi.deps.json

@@ -0,0 +1,59 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v9.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v9.0": {
+      "StudentApi/1.0.0": {
+        "dependencies": {
+          "Microsoft.AspNetCore.OpenApi": "9.0.2"
+        },
+        "runtime": {
+          "StudentApi.dll": {}
+        }
+      },
+      "Microsoft.AspNetCore.OpenApi/9.0.2": {
+        "dependencies": {
+          "Microsoft.OpenApi": "1.6.17"
+        },
+        "runtime": {
+          "lib/net9.0/Microsoft.AspNetCore.OpenApi.dll": {
+            "assemblyVersion": "9.0.2.0",
+            "fileVersion": "9.0.225.6704"
+          }
+        }
+      },
+      "Microsoft.OpenApi/1.6.17": {
+        "runtime": {
+          "lib/netstandard2.0/Microsoft.OpenApi.dll": {
+            "assemblyVersion": "1.6.17.0",
+            "fileVersion": "1.6.17.0"
+          }
+        }
+      }
+    }
+  },
+  "libraries": {
+    "StudentApi/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    },
+    "Microsoft.AspNetCore.OpenApi/9.0.2": {
+      "type": "package",
+      "serviceable": true,
+      "sha512": "sha512-JUndpjRNdG8GvzBLH/J4hen4ehWaPcshtiQ6+sUs1Bcj3a7dOsmWpDloDlpPeMOVSlhHwUJ3Xld0ClZjsFLgFQ==",
+      "path": "microsoft.aspnetcore.openapi/9.0.2",
+      "hashPath": "microsoft.aspnetcore.openapi.9.0.2.nupkg.sha512"
+    },
+    "Microsoft.OpenApi/1.6.17": {
+      "type": "package",
+      "serviceable": true,
+      "sha512": "sha512-Le+kehlmrlQfuDFUt1zZ2dVwrhFQtKREdKBo+rexOwaCoYP0/qpgT9tLxCsZjsgR5Itk1UKPcbgO+FyaNid/bA==",
+      "path": "microsoft.openapi/1.6.17",
+      "hashPath": "microsoft.openapi.1.6.17.nupkg.sha512"
+    }
+  }
+}

StudentApi/bin/Debug/net9.0/StudentApi.runtimeconfig.json

@@ -0,0 +1,19 @@
+{
+  "runtimeOptions": {
+    "tfm": "net9.0",
+    "frameworks": [
+      {
+        "name": "Microsoft.NETCore.App",
+        "version": "9.0.0"
+      },
+      {
+        "name": "Microsoft.AspNetCore.App",
+        "version": "9.0.0"
+      }
+    ],
+    "configProperties": {
+      "System.GC.Server": true,
+      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
+    }
+  }
+}

StudentApi/bin/Debug/net9.0/StudentApi.staticwebassets.endpoints.json

@@ -0,0 +1,5 @@
+{
+  "Version": 1,
+  "ManifestType": "Build",
+  "Endpoints": []
+}

StudentApi/bin/Debug/net9.0/appsettings.Development.json

@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}