Added endpoints

.gitignore

@@ -1,3 +1,403 @@
 bin/
 obj/
 *.db
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+# but not Directory.Build.rsp, as it configures directory-level build defaults
+!Directory.Build.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.tlog
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio 6 auto-generated project file (contains which files were open etc.)
+*.vbp
+
+# Visual Studio 6 workspace and project file (working project files containing files to include in project)
+*.dsw
+*.dsp
+
+# Visual Studio 6 technical files
+*.ncb
+*.aps
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# Visual Studio History (VSHistory) files
+.vshistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+# Windows Installer files from build outputs
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# JetBrains Rider
+*.sln.iml

Controllers/MessageController.cs

@@ -1,13 +0,0 @@
-using Microsoft.AspNetCore.Mvc;
-
-namespace SimpleLIS.Controllers;
-
-[ApiController]
-[Route("messages")]
-public class MessageController : Controller
-{
-    public IActionResult Index()
-    {
-        return View();
-    }
-}

Controllers/MessagesController.cs

@@ -0,0 +1,82 @@
+using AutoMapper;
+using Microsoft.AspNetCore.Mvc;
+using SimpleLIS.DTO;
+using SimpleLIS.Models;
+using SimpleLIS.Services;
+
+namespace SimpleLIS.Controllers;
+
+[ApiController]
+[Route("api/messages")]
+public class MessagesController : ControllerBase
+{
+    private readonly MessageService _messageService;
+    private readonly IMapper _mapper;
+
+    public MessagesController(MessageService messageService, IMapper mapper)
+    {
+        _messageService = messageService;
+        _mapper = mapper;
+    }
+
+    [HttpPost]
+    public async Task<IActionResult> CreateMessage([FromBody] MessageDTO messageDto)
+    {
+        if (!ModelState.IsValid) return BadRequest(ModelState);
+
+        var message = _mapper.Map<Message>(messageDto);
+        var createdMessage = await _messageService.CreateMessageAsync(message);
+
+        var createdMessageDto = _mapper.Map<MessageDTO>(createdMessage);
+        return Ok(createdMessageDto);
+    }
+
+    [HttpGet("{id}")]
+    public async Task<IActionResult> GetMessage(int id)
+    {
+        var message = await _messageService.GetMessageByIdAsync(id);
+        if (message == null) return NotFound();
+
+        var messageDto = _mapper.Map<MessageDTO>(message);
+        return Ok(messageDto);
+    }
+
+    [HttpGet]
+    public async Task<IActionResult> ListMessages()
+    {
+        var messages = await _messageService.ListMessagesAsync();
+        var messagesDto = _mapper.Map<IEnumerable<MessageDTO>>(messages);
+
+        return Ok(messagesDto);
+    }
+
+    // PUT: api/Messages/{id}
+    [HttpPut("{id}")]
+    public async Task<IActionResult> UpdateMessage(int id, [FromBody] MessageDTO messageDto)
+    {
+        if (!ModelState.IsValid) return BadRequest(ModelState);
+
+        if (!await _messageService.MessageExistsAsync(id))
+        {
+            return NotFound();
+        }
+
+        var message = _mapper.Map<Message>(messageDto);
+        message.MessageId = id; // Ensure the correct ID is used
+
+        var updatedMessage = await _messageService.UpdateMessageAsync(message);
+        var updatedMessageDto = _mapper.Map<MessageDTO>(updatedMessage);
+
+        return Ok(updatedMessageDto);
+    }
+
+    // DELETE: api/Messages/{id}
+    [HttpDelete("{id}")]
+    public async Task<IActionResult> DeleteMessage(int id)
+    {
+        var deleted = await _messageService.DeleteMessageAsync(id);
+        if (!deleted) return NotFound();
+
+        return NoContent();
+    }
+}

Controllers/ObservationsController.cs

@@ -0,0 +1,80 @@
+using AutoMapper;
+using Microsoft.AspNetCore.Mvc;
+using SimpleLIS.DTO;
+using SimpleLIS.Models;
+using SimpleLIS.Services;
+
+namespace SimpleLIS.Controllers;
+
+[ApiController]
+[Route("api/observations")]
+public class ObservationsController : ControllerBase
+{
+    private readonly ObservationService _observationService;
+    private readonly IMapper _mapper;
+
+    public ObservationsController(ObservationService observationService, IMapper mapper)
+    {
+        _observationService = observationService;
+        _mapper = mapper;
+    }
+
+    [HttpPost]
+    public async Task<IActionResult> CreateObservation([FromBody] ObservationDTO observationDto)
+    {
+        if (!ModelState.IsValid) return BadRequest(ModelState);
+
+        var observation = _mapper.Map<Observation>(observationDto);
+        var createdObservation = await _observationService.CreateObservationAsync(observation);
+
+        var createdObservationDto = _mapper.Map<ObservationDTO>(createdObservation);
+        return Ok(createdObservationDto);
+    }
+
+    [HttpGet("{id}")]
+    public async Task<IActionResult> GetObservation(int id)
+    {
+        var observation = await _observationService.GetObservationByIdAsync(id);
+        if (observation == null) return NotFound();
+
+        var observationDto = _mapper.Map<ObservationDTO>(observation);
+        return Ok(observationDto);
+    }
+
+    [HttpGet]
+    public async Task<IActionResult> ListObservations()
+    {
+        var observations = await _observationService.ListObservationsAsync();
+        var observationsDto = _mapper.Map<IEnumerable<ObservationDTO>>(observations);
+
+        return Ok(observationsDto);
+    }
+
+    [HttpPut("{id}")]
+    public async Task<IActionResult> UpdateObservation(int id, [FromBody] ObservationDTO observationDto)
+    {
+        if (!ModelState.IsValid) return BadRequest(ModelState);
+
+        if (!await _observationService.ObservationExistsAsync(id))
+        {
+            return NotFound();
+        }
+
+        var observation = _mapper.Map<Observation>(observationDto);
+        observation.ObservationId = id;
+
+        var updatedObservation = await _observationService.UpdateObservationAsync(observation);
+        var updatedObservationDto = _mapper.Map<ObservationDTO>(updatedObservation);
+
+        return Ok(updatedObservationDto);
+    }
+
+    [HttpDelete("{id}")]
+    public async Task<IActionResult> DeleteObservation(int id)
+    {
+        var deleted = await _observationService.DeleteObservationAsync(id);
+        if (!deleted) return NotFound();
+
+        return NoContent();
+    }
+}

Controllers/PatientsController.cs

@@ -0,0 +1,80 @@
+using AutoMapper;
+using Microsoft.AspNetCore.Mvc;
+using SimpleLIS.Models;
+using SimpleLIS.Services;
+
+namespace SimpleLIS.Controllers;
+
+[ApiController]
+[Route("api/patients")]
+public class PatientsController : ControllerBase
+{
+    private readonly PatientService _patientService;
+    private readonly IMapper _mapper;
+
+    public PatientsController(PatientService patientService, IMapper mapper)
+    {
+        _patientService = patientService;
+        _mapper = mapper;
+    }
+
+    // POST: api/Patients
+    [HttpPost]
+    public async Task<IActionResult> CreatePatient([FromBody] PatientDTO patientDto)
+    {
+        if (!ModelState.IsValid) return BadRequest(ModelState);
+
+        var patient = _mapper.Map<Patient>(patientDto);
+        var createdPatient = await _patientService.CreatePatientAsync(patient);
+
+        var createdPatientDto = _mapper.Map<PatientDTO>(createdPatient);
+        return Ok(createdPatientDto);
+    }
+
+    [HttpGet("{id}")]
+    public async Task<IActionResult> GetPatient(int id)
+    {
+        var patient = await _patientService.GetPatientByIdAsync(id);
+        if (patient == null) return NotFound();
+
+        var patientDto = _mapper.Map<PatientDTO>(patient);
+        return Ok(patientDto);
+    }
+
+    [HttpGet]
+    public async Task<IActionResult> ListPatients()
+    {
+        var patients = await _patientService.ListPatientsAsync();
+        var patientsDto = _mapper.Map<IEnumerable<PatientDTO>>(patients);
+
+        return Ok(patientsDto);
+    }
+
+    [HttpPut("{id}")]
+    public async Task<IActionResult> UpdatePatient(int id, [FromBody] PatientDTO patientDto)
+    {
+        if (!ModelState.IsValid) return BadRequest(ModelState);
+
+        if (!await _patientService.PatientExistsAsync(id))
+        {
+            return NotFound();
+        }
+
+        var patient = _mapper.Map<Patient>(patientDto);
+        patient.PatientId = id;
+
+        var updatedPatient = await _patientService.UpdatePatientAsync(patient);
+        var updatedPatientDto = _mapper.Map<PatientDTO>(updatedPatient);
+
+        return Ok(updatedPatientDto);
+    }
+
+    [HttpDelete("{id}")]
+    public async Task<IActionResult> DeletePatient(int id)
+    {
+        var deleted = await _patientService.DeletePatientAsync(id);
+        if (!deleted) return NotFound();
+
+        return NoContent();
+    }
+}

DTO/MessageDTO.cs

@@ -0,0 +1,33 @@
+namespace SimpleLIS.DTO;
+
+public class MessageDTO
+{
+    public int MessageId { get; set; }
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string ControlId { get; set; } // Unique identifier for the HL7 message
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string MessageType { get; set; } // Type of HL7 message (e.g., ORU^R01)
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string SendingApp { get; set; } // Sending application
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string SendingFacility { get; set; } // Sending facility
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string ReceivingApp { get; set; } // Receiving application
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string ReceivingFacility { get; set; } // Receiving facility
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public DateTime Timestamp { get; set; } // Message creation time
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string Version { get; set; } // HL7 version
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+
+    // Associated Observations
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public List<ObservationDTO> Observations { get; set; }
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+}

DTO/ObservationDTO.cs

@@ -0,0 +1,21 @@
+namespace SimpleLIS.DTO;
+
+public class ObservationDTO
+{
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string ObservationCode { get; set; } // Code identifying the observation (e.g., WBC, HGB)
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string ObservationValue { get; set; } // The observed value
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string Units { get; set; } // Units of measurement (e.g., g/dL, %)
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string AbnormalFlag { get; set; } // Indicates if the result is abnormal
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+    public string ResultStatus { get; set; } // Status of the result (e.g., F for final)
+    public int ObservationId { get; internal set; }
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
+}

DTO/PatientDTO.cs

@@ -0,0 +1,14 @@
+public class PatientDTO
+{
+    public int PatientId { get; set; }
+#pragma warning disable CS8618
+    public string LastName { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
+    public string FirstName { get; set; }
+#pragma warning restore CS8618
+    public DateTime DateOfBirth { get; set; }
+#pragma warning disable CS8618
+    public string Gender { get; set; }
+#pragma warning restore CS8618
+}

HL7DbContext.cs

@@ -5,9 +5,15 @@ using SimpleLIS.Models;
 
 public class HL7DbContext : DbContext
 {
+#pragma warning disable CS8618
     public DbSet<Message> Messages { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public DbSet<Patient> Patients { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public DbSet<Observation> Observations { get; set; }
+#pragma warning restore CS8618
 
     protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
     {
@@ -29,5 +35,17 @@ public class HL7DbContext : DbContext
             .HasMany(m => m.Observations)
             .WithOne(o => o.Message)
             .HasForeignKey(o => o.MessageId);
+
+        modelBuilder.Entity<Message>()
+            .HasOne(m => m.Patient)
+            .WithMany(p => p.Messages)
+            .HasForeignKey(m => m.PatientId)
+            .OnDelete(DeleteBehavior.Cascade);
+
+        modelBuilder.Entity<Observation>()
+            .HasOne(o => o.Message)
+            .WithMany(m => m.Observations)
+            .HasForeignKey(o => o.MessageId)
+            .OnDelete(DeleteBehavior.Cascade);
     }
 }

MessageProfile.cs

@@ -0,0 +1,18 @@
+using AutoMapper;
+using SimpleLIS.DTO;
+using SimpleLIS.Models;
+
+namespace SimpleLIS;
+
+public class MappingProfile : Profile
+{
+    public MappingProfile()
+    {
+        CreateMap<MessageDTO, Message>();
+        CreateMap<Message, MessageDTO>();
+        CreateMap<ObservationDTO, Observation>();
+        CreateMap<Observation, ObservationDTO>();
+        CreateMap<PatientDTO, Patient>();
+        CreateMap<Patient, PatientDTO>();
+    }
+}

Models/Message.cs

@@ -3,15 +3,36 @@ namespace SimpleLIS.Models;
 public class Message
 {
     public int MessageId { get; set; }
+#pragma warning disable CS8618
     public string ControlId { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string MessageType { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string SendingApp { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string SendingFacility { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string ReceivingApp { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string ReceivingFacility { get; set; }
+#pragma warning restore CS8618
     public DateTime Timestamp { get; set; }
+#pragma warning disable CS8618
     public string Version { get; set; }
+#pragma warning restore CS8618
 
-    // Navigation Property
+    // Navigation Property for Observations
+#pragma warning disable CS8618
     public ICollection<Observation> Observations { get; set; }
+#pragma warning restore CS8618
+
+    public int PatientId { get; set; }
+#pragma warning disable CS8618
+    public Patient Patient { get; set; }
+#pragma warning restore CS8618
 }

Models/Observation.cs

@@ -4,12 +4,24 @@ public class Observation
 {
     public int ObservationId { get; set; }
     public int MessageId { get; set; } // Foreign Key
+#pragma warning disable CS8618
     public string ObservationCode { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string ObservationValue { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string Units { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string AbnormalFlag { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string ResultStatus { get; set; }
+#pragma warning restore CS8618
 
     // Navigation Property
+#pragma warning disable CS8618
     public Message Message { get; set; }
+#pragma warning restore CS8618
 }

Models/Patient.cs

@@ -3,9 +3,21 @@ namespace SimpleLIS.Models;
 public class Patient
 {
     public int PatientId { get; set; }
+#pragma warning disable CS8618
     public string HL7PatientId { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string LastName { get; set; }
+#pragma warning restore CS8618
+#pragma warning disable CS8618
     public string FirstName { get; set; }
+#pragma warning restore CS8618
     public DateTime DateOfBirth { get; set; }
+#pragma warning disable CS8618
     public string Gender { get; set; }
+#pragma warning restore CS8618
+
+#pragma warning disable CS8618
+    public ICollection<Message> Messages { get; set; }
+#pragma warning restore CS8618
 }

Program.cs

@@ -1,16 +1,29 @@
+using Microsoft.OpenApi.Models;
+using SimpleLIS;
+using SimpleLIS.Services;
+
 var builder = WebApplication.CreateBuilder(args);
 
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
 builder.Services.AddControllersWithViews();
+builder.Services.AddAutoMapper(typeof(Program));
+
+builder.Services.AddScoped<MessageService>();
+builder.Services.AddScoped<ObservationService>();
+builder.Services.AddScoped<PatientService>();
+builder.Services.AddDbContext<HL7DbContext>();
+
+builder.Services.AddSwaggerGen(options =>
+{
+    options.SwaggerDoc("v1", new OpenApiInfo { Title = "SimpleLIS", Version = "v1" });
+});
 
 var app = builder.Build();
 
-// Configure the HTTP request pipeline.
 if (!app.Environment.IsDevelopment())
 {
     app.UseExceptionHandler("/Home/Error");
-    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
     app.UseHsts();
 }
 
@@ -25,4 +38,10 @@ app.MapControllerRoute(
     name: "default",
     pattern: "{controller=Home}/{action=Index}/{id?}");
 
+app.UseSwagger();
+app.UseSwaggerUI(c =>
+{
+    c.SwaggerEndpoint("/swagger/v1/swagger.json", "SimpleLIS V1");
+});
+
 app.Run();

Services/MessageService.cs

@@ -0,0 +1,55 @@
+using Microsoft.EntityFrameworkCore;
+using SimpleLIS.Models;
+
+namespace SimpleLIS.Services;
+
+public class MessageService
+{
+    private readonly HL7DbContext _context;
+
+    public MessageService(HL7DbContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<Message> CreateMessageAsync(Message message)
+    {
+        _context.Messages.Add(message);
+        await _context.SaveChangesAsync();
+        return message;
+    }
+
+    public async Task<Message> GetMessageByIdAsync(int id)
+    {
+#pragma warning disable CS8603
+        return await _context.Messages.Include(m => m.Observations).FirstOrDefaultAsync(m => m.MessageId == id);
+#pragma warning restore CS8603
+    }
+
+    public async Task<IEnumerable<Message>> ListMessagesAsync()
+    {
+        return await _context.Messages.Include(m => m.Observations).ToListAsync();
+    }
+
+    public async Task<Message> UpdateMessageAsync(Message message)
+    {
+        _context.Messages.Update(message);
+        await _context.SaveChangesAsync();
+        return message;
+    }
+
+    public async Task<bool> DeleteMessageAsync(int id)
+    {
+        var message = await GetMessageByIdAsync(id);
+        if (message == null) return false;
+
+        _context.Messages.Remove(message);
+        await _context.SaveChangesAsync();
+        return true;
+    }
+
+    public async Task<bool> MessageExistsAsync(int id)
+    {
+        return await _context.Messages.AnyAsync(m => m.MessageId == id);
+    }
+}

Services/ObservationService.cs

@@ -0,0 +1,55 @@
+using Microsoft.EntityFrameworkCore;
+using SimpleLIS.Models;
+
+namespace SimpleLIS.Services;
+
+public class ObservationService
+{
+    private readonly HL7DbContext _context;
+
+    public ObservationService(HL7DbContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<Observation> CreateObservationAsync(Observation observation)
+    {
+        _context.Observations.Add(observation);
+        await _context.SaveChangesAsync();
+        return observation;
+    }
+
+    public async Task<Observation> GetObservationByIdAsync(int id)
+    {
+#pragma warning disable CS8603
+        return await _context.Observations.FirstOrDefaultAsync(o => o.ObservationId == id);
+#pragma warning restore CS8603
+    }
+
+    public async Task<IEnumerable<Observation>> ListObservationsAsync()
+    {
+        return await _context.Observations.ToListAsync();
+    }
+
+    public async Task<Observation> UpdateObservationAsync(Observation observation)
+    {
+        _context.Observations.Update(observation);
+        await _context.SaveChangesAsync();
+        return observation;
+    }
+
+    public async Task<bool> DeleteObservationAsync(int id)
+    {
+        var observation = await GetObservationByIdAsync(id);
+        if (observation == null) return false;
+
+        _context.Observations.Remove(observation);
+        await _context.SaveChangesAsync();
+        return true;
+    }
+
+    public async Task<bool> ObservationExistsAsync(int id)
+    {
+        return await _context.Observations.AnyAsync(o => o.ObservationId == id);
+    }
+}

Services/PatientService.cs

@@ -0,0 +1,56 @@
+using Microsoft.EntityFrameworkCore;
+using SimpleLIS.Models;
+
+namespace SimpleLIS.Services;
+
+public class PatientService
+{
+    private readonly HL7DbContext _context;
+
+    public PatientService(HL7DbContext context)
+    {
+        _context = context;
+    }
+
+
+    public async Task<Patient> CreatePatientAsync(Patient patient)
+    {
+        _context.Patients.Add(patient);
+        await _context.SaveChangesAsync();
+        return patient;
+    }
+
+    public async Task<Patient> GetPatientByIdAsync(int id)
+    {
+#pragma warning disable CS8603
+        return await _context.Patients.FirstOrDefaultAsync(p => p.PatientId == id);
+#pragma warning restore CS8603
+    }
+
+    public async Task<IEnumerable<Patient>> ListPatientsAsync()
+    {
+        return await _context.Patients.ToListAsync();
+    }
+
+    public async Task<Patient> UpdatePatientAsync(Patient patient)
+    {
+        _context.Patients.Update(patient);
+        await _context.SaveChangesAsync();
+        return patient;
+    }
+
+    public async Task<bool> DeletePatientAsync(int id)
+    {
+        var patient = await GetPatientByIdAsync(id);
+        if (patient == null) return false;
+
+        _context.Patients.Remove(patient);
+        await _context.SaveChangesAsync();
+        return true;
+    }
+
+    public async Task<bool> PatientExistsAsync(int id)
+    {
+        return await _context.Patients.AnyAsync(p => p.PatientId == id);
+    }
+}

SimpleLIS.csproj

@@ -7,6 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="AutoMapper.Extensions.Microsoft.DependencyInjection" Version="12.0.1" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.11">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>

Views/Message/Index.cshtml

@@ -1,3 +0,0 @@
-<div>
-    Hello, World
-</div>