Refactored Swift native implementation

[iarata]

This PR refactors the Swift native implementation. It introduces the following new classes:

• HealthDataWriter: writing health data to HealthKit functions
• HealthDataReader: reading health data from HealthKit functions
• HealthDataOperations: managing data permissions and delete functions
• HealthConstants: constants used in the plugin (where types are introduced)
• HealthUtilities: helper functions - also includes type conversion helpers for HKWorkoutActivityType

The initialisation of these classes are lazy now to help with performance.

In the new approach, when defining a new method for iOS native, for better error handling the cases should be handled as follow under the handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) function:

case "writeMeal":
   do {
         try healthDataWriter.writeMeal(call: call, result: result)
    } catch {
         result(FlutterError(code: "WRITE_ERROR",
                    message: "Error writing meal: \(error.localizedDescription)",
                    details: nil))
    }

This now requires each new method to throw an error in case of failure.

Supported error codes to be used:

• REQUEST_AUTH_ERROR: Error requesting authorisation
• PERMISSION_ERROR: Error checking permissions
• WRITE_ERROR: Error writing [DataType]
• DELETE_ERROR: Error deleting data
• ARGUMENT_ERROR: Missing required argument
• INVALID_TYPE: Invalid dataTypeKey
• HEALTH_ERROR: Error getting health data
• INTERNAL_ERROR: Internal instance reference lost
• STATISTICS_ERROR: Error getting statistics
• STEPS_ERROR: Error getting step count

[iarata]

Only files under packages/health/* are relevant. The rest of the changes are the synced contributions to master

[Panosfunk]

Error deleting data:

Error deleting HKQuantityTypeIdentifierActiveEnergyBurned Sample: dataObjects cannot be empty
Error deleting HKDataTypeIdentifierAudiogram Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierBasalEnergyBurned Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierBloodGlucose Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierOxygenSaturation Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierBloodPressureDiastolic Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierBloodPressureSystolic Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierBodyFatPercentage Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierBodyMassIndex Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierBodyTemperature Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierDietaryCarbohydrates Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierDietaryCaffeine Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierDietaryEnergyConsumed Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierDietaryFatTotal Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierDietaryProtein Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierElectrodermalActivity Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierForcedExpiratoryVolume1 Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierHeartRate Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierHeartRateVariabilitySDNN Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierHeight Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierRespiratoryRate Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierPeripheralPerfusionIndex Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierStepCount Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierWaistCircumference Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierBodyMass Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierFlightsClimbed Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierDistanceWalkingRunning Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierMindfulSession Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierSleepAnalysis Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierSleepAnalysis Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierSleepAnalysis Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierSleepAnalysis Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierSleepAnalysis Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierSleepAnalysis Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierDietaryWater Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierAppleExerciseTime Sample: dataObjects cannot be empty
Error deleting HKWorkoutTypeIdentifier Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierHeadache Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierHeadache Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierHeadache Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierHeadache Sample: dataObjects cannot be empty
Error deleting HKCategoryTypeIdentifierHeadache Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierLeanBodyMass Sample: dataObjects cannot be empty
Error deleting HKCorrelationTypeIdentifierFood Sample: dataObjects cannot be empty
Warning: Health data type 'GENDER' not found in dataTypesDict
Warning: Health data type 'BLOOD_TYPE' not found in dataTypesDict
Warning: Health data type 'BIRTH_DATE' not found in dataTypesDict
Error deleting HKCategoryTypeIdentifierMenstrualFlow Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierWaterTemperature Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierUnderwaterDepth Sample: dataObjects cannot be empty
Error deleting HKQuantityTypeIdentifierUVExposure Sample: dataObjects cannot be empty

[Panosfunk]

It worked well on the Carp Studies, example app gives error above but data seems to be deleted nevertheless.

[Panosfunk]

[bardram]

I get the same errors when deleting data as reported by @Panosfunk - but othervise it seems to work fine.

But I get the

Warning: Health data type 'GENDER' not found in dataTypesDict
Warning: Health data type 'BLOOD_TYPE' not found in dataTypesDict
Warning: Health data type 'BIRTH_DATE' not found in dataTypesDict

when trying to authenticate. Don't know what this means?

[sikandernoori]

Any update on this release. waiting for feature blocked in https://github.com/cph-cachet/flutter-plugins/issues/1178 in favour of Health 13

[iarata]

@bardram @Panosfunk issues were some data were read-only and some didn't have any samples to be deleted