Teller antall måneder der minst én kompetanse i en liste av kompetans…

…er er brukt

src/ApplicationCore/Models/ProjectExperienceResponse.cs

@@ -0,0 +1,5 @@
+namespace ApplicationCore.Models;
+public record ProjectExprienceResponse{
+    public required List<ProjectExperience> projects {get; init;}
+    public required int MonthsOfExperience {get; init;}
+}

src/ApplicationCore/Services/EmployeesService.cs

@@ -105,14 +105,24 @@ public async Task<Cv> GetCvForEmployee(string alias, string country)
         return await _employeesRepository.GetEmployeeWithCv(alias, country);
     }
 
-    public async Task<List<ProjectExperience>> GetProjectExperiencesForEmployee(string email,
+    public async Task<ProjectExprienceResponse> GetProjectExperiencesForEmployee(string email,
         List<string> competencies)
     {
-        return await _employeesRepository.GetProjectExperiencesByEmailAndCompetencies(email, competencies);
+        List<ProjectExperience> relevantProjects =  await _employeesRepository.GetProjectExperiencesByEmailAndCompetencies(email, competencies);
+        return new ProjectExprienceResponse{
+            projects = relevantProjects,
+            MonthsOfExperience = relevantProjects.Select( pe => CalculateMonths(pe.FromDate, pe.ToDate)).Sum()
+        };
     }
 
     public async Task<List<string>> GetAllCompetencies(string? email = null)
     {
         return await _employeesRepository.GetAllCompetencies(email);
     }
+    private static int CalculateMonths(DateOnly? from, DateOnly to){
+        if(from == null){
+            return 0;
+        }
+        return ((to.Year - from.Value.Year) * 12) + (to.Month - from.Value.Month) + 1;
+    }
 }

src/Web/Controllers/EmployeesController.cs

@@ -70,7 +70,7 @@ public async Task<Cv> GetCvForEmployee ([FromQuery] string alias, [FromQuery] st
     [OutputCache(Duration = 60)]
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(StatusCodes.Status404NotFound)]
-    public async Task<ActionResult<List<ProjectExperience>>> GetProjectsFromEmployee ([FromQuery] string alias, [FromQuery] string country, [FromQuery] List<string> competencies)
+    public async Task<ActionResult<ProjectExprienceResponse>> GetProjectsFromEmployee ([FromQuery] string alias, [FromQuery] string country, [FromQuery] List<string> competencies)
     {
         var employee = await _employeeService.GetByAliasAndCountry(alias, country);
         if (employee == null)