/// <summary>
/// Add every essential oil to list, that is assigned for specific search effect.
/// Calculate the EffectDegreeDiscomfortValue
/// </summary>
/// <author>Anna Krebs</author>
/// <param name="searchEssentialOilItems"></param>
/// <param name="essentialOilEffects"></param>
/// <param name="searchedEffect"></param>
/// <returns></returns>
private async Task CreateSearchEssentialOilItemsListAsync(List <SearchEssentialOilItem> searchEssentialOilItems,
IList <EssentialOilEffect> essentialOilEffects, SearchEffectItem searchedEffect)
{
foreach (var essentialOilEffect in essentialOilEffects)
{
// Get the essential oils according to the effect they are assigned to.
var essentialOil = await Repository.GetByIdAsync(essentialOilEffect.EssentialOilId);
// Create search essential oil item for each assigned essential oil that is assigned to a specific effect.
var searchEssentialOilItem = new SearchEssentialOilItem();
searchEssentialOilItem.EssentialOil = essentialOil;
searchEssentialOilItem.EssentialOilId = essentialOil.Id;
searchEssentialOilItem.SearchEffectTextsInEssentialOil = searchedEffect.SearchEffectText;
// Get the product of "Wirksamkeit" of effect and "Beschwerdeausmass" of each searched effect.
searchEssentialOilItem.EffectDegreeDiscomfortValue =
essentialOilEffect.EffectDegree * searchedEffect.DiscomfortValue;
// Add the essential oil to the list for the specific effect.
searchEssentialOilItems.Add(searchEssentialOilItem);
Log.Info(
$"Essential oil {searchEssentialOilItem.EssentialOil.Name} with id {searchEssentialOilItem.EssentialOilId} was found for effect with id {essentialOilEffect.EffectId} and effect degree {essentialOilEffect.EffectDegree}.");
}
}
/// <summary>
/// Calculates the Gewichtete Übereinstimmung.
/// E.g. 3 Sliders with inputted DiscomfortValue 4, 1, 2.
/// MaxEffectDegreeDiscomfortValue would be (4 * 4) + (1 * 4) + (2 * 4) = 28
/// EffectDegreeDiscomfortValue for oil with 3 matches and EffectDegree 3, 2, 4 would be (4 * 3) + (1 * 2) + (2 * 4) =
/// 22
/// WeightedMatchValue for oil would be 100 / 28 * 22 = 79
/// EffectDegreeDiscomfortValue for oil with 2 matches and EffectDegree 2, 2 would be (4 * 2) + (1 * 2) = 10
/// WeightedMatchValue for oil would be 100 / 28 * 10 = 36
/// EffectDegreeDiscomfortValue for oil with 1 match and EffectDegree 4 would be (4 * 4) = 16
/// WeightedMatchValue for oil would be 100 / 28 * 16 = 57
/// EffectDegreeDiscomfortValue for another oil with 1 match and EffectDegree 3 would be (1 * 3) = 3
/// WeightedMatchValue for oil would be 100 / 28 * 3 = 11
/// </summary>
/// <author>Anna Krebs</author>
/// <param name="resultItem"></param>
/// <param name="maxEffectDegreeDiscomfortValue"></param>
/// <returns></returns>
public int CalculateWeightedMatchValue(SearchEssentialOilItem resultItem, int maxEffectDegreeDiscomfortValue)
{
// Calculate the weightedMatchValue in order to set the progress bar.
int weightedMatchValue;
if (maxEffectDegreeDiscomfortValue != 0)
{
// E.g. 100 / 28 * 22 = 79
var weightedMatchValueDouble = (double)100 / maxEffectDegreeDiscomfortValue *
resultItem.EffectDegreeDiscomfortValue;
weightedMatchValue = Convert.ToInt32(weightedMatchValueDouble);
}
else
{
Log.Error(
"An unexpected error occurred while CalculateWeightedMatchValue. MaxEffectDegreeDiscomfortValue is 0. Cannot divide by zero.");
throw new DivideByZeroException(string.Format(Resources.Resources.Error_UnexpectedError,
Resources.Resources.Error_MaxEffectDegreeDiscomfortValueIsZero, resultItem.EssentialOil.Id));
}
Log.Info(
$"CalculateWeightedMatchValue 100 / maxEffectDegreeDiscomfortValue * resultItem.EffectDegreeDiscomfortValue = weightedMatchValue -> 100 / {maxEffectDegreeDiscomfortValue} * {resultItem.EffectDegreeDiscomfortValue} = {weightedMatchValue} for essential oil item {resultItem.EssentialOil.Name} with id {resultItem.EssentialOilId}.");
return(weightedMatchValue);
}
