89 lines
2.4 KiB
Swift
89 lines
2.4 KiB
Swift
@_exported import ApiController
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import Dependencies
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import Logging
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import PsychrometricClient
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import Routes
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extension ApiController: DependencyKey {
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public static var liveValue: ApiController {
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@Dependency(\.psychrometricClient) var psychrometricClient
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return .init(json: { route, logger in
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switch route {
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case let .calculateMoldRisk(request):
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logger.info("Calculating mold risk: \(request)")
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return try await psychrometricClient.resond(request, logger)
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}
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})
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}
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}
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private extension PsychrometricClient {
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private func calculateProperties(_ request: MoldRisk.Request) async throws -> PsychrometricProperties {
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try await psychrometricProperties(.dryBulb(request.temperature, relativeHumidity: request.humidity))
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}
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func resond(_ request: MoldRisk.Request, _ logger: Logger) async throws -> MoldRisk.Response {
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let properties = try await calculateProperties(request)
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let riskLevel = MoldRisk.RiskLevel(humidity: request.humidity)
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return .init(
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psychrometricProperties: properties,
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riskLevel: riskLevel,
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daysToMold: riskLevel.daysToMold,
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recommendations: .recommendations(for: request, dewPoint: properties.dewPoint, riskLevel: riskLevel)
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)
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}
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}
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private extension MoldRisk.RiskLevel {
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init(humidity: RelativeHumidity) {
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if humidity < 60 {
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self = .low
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} else if humidity < 70 {
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self = .moderate
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} else if humidity < 80 {
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self = .high
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} else {
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self = .severe
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}
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}
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var daysToMold: Int? {
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switch self {
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case .low: return nil
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case .moderate: return 30
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case .high: return 14
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case .severe: return 7
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}
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}
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}
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private extension Array where Element == String {
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static func recommendations(
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for request: MoldRisk.Request,
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dewPoint: DewPoint,
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riskLevel: MoldRisk.RiskLevel
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) -> Self {
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var recommendations = [String]()
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if request.humidity < 60 {
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recommendations.append(
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"Reduce indoor relative humidity below 60% using dehumidification"
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)
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}
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if (request.temperature.fahrenheit - dewPoint.fahrenheit) < 4 {
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recommendations.append(
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"Increase air temperature or improve insulation to prevent condensation"
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)
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}
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if riskLevel != .low {
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recommendations.append(contentsOf: [
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"Improve ventilation to reduce moisture accumulation",
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"Inspect for and repair any water leaks or intrusion"
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])
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}
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return recommendations
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}
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}
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