# UpdateDateOfBirthViewModel.kt

    /*
     * The MIT License
     *
     * Original work sponsored and donated by The Danish Health Data Authority (http://www.sundhedsdatastyrelsen.dk)
     *
     * Copyright (C) 2021 The Danish Health Data Authority (http://www.sundhedsdatastyrelsen.dk)
     *
     *
     * Permission is hereby granted, free of charge, to any person obtaining a copy of
     * this software and associated documentation files (the "Software"), to deal in
     * the Software without restriction, including without limitation the rights to
     * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
     * of the Software, and to permit persons to whom the Software is furnished to do
     * so, subject to the following conditions:
     *
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     * The above copyright notice and this permission notice shall be included in all
     * copies or substantial portions of the Software.
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     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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    package dk.nsp.mingraviditet.ui.main.overview.dateofbirth

    import androidx.hilt.Assisted
    import androidx.lifecycle.LiveData
    import androidx.lifecycle.MutableLiveData
    import androidx.lifecycle.SavedStateHandle
    import androidx.lifecycle.ViewModel
    import androidx.lifecycle.viewModelScope
    import dagger.hilt.android.lifecycle.HiltViewModel
    import dk.nsp.domain.repository.DataCardRepository
    import dk.nsp.models.DateOfBirth
    import dk.nsp.shared.ResultWrapper
    import dk.nsp.shared.util.launchDefault
    import java.time.LocalDateTime
    import javax.inject.Inject

    @HiltViewModel
    class UpdateDateOfBirthViewModel @Inject constructor(
        private val dataCardRepository: DataCardRepository,
        @Assisted private val savedStateHandle: SavedStateHandle
    ) : ViewModel() {

        private val _pickedDateOfBirth = MutableLiveData<DateOfBirth>()
        val pickedDateOfBirth: LiveData<DateOfBirth> = _pickedDateOfBirth

        private val _onDateOfBirthUpdated = MutableLiveData<ResultWrapper<DateOfBirth>>()
        val onDateOfBirthUpdated: LiveData<ResultWrapper<DateOfBirth>> = _onDateOfBirthUpdated

        init {
            val dateOfBirthKey =
                savedStateHandle.get<String>(UpdateDateOfBirthFragment.dateArgKey) ?: ""
            val dateOfBirth = savedStateHandle.get<DateOfBirth>(dateOfBirthKey)

            val pickedDateOfBirth = if (dateOfBirth?.dateOfBirth == null) {
                //If dateOfBirth is null we use today, so the user is able to save the date,
                // without having to click a date in the calendar
                DateOfBirth(LocalDateTime.now())
            } else {
                dateOfBirth
            }

            _pickedDateOfBirth.postValue(pickedDateOfBirth)
        }

        fun updateLocalDateOfBirth(dateOfBirth: DateOfBirth) {
            if (dateOfBirth != _pickedDateOfBirth.value) {
                _pickedDateOfBirth.postValue(dateOfBirth)
            }
        }

        fun sendUpdateDateOfBirthToBackend() {
            viewModelScope.launchDefault {
                val updateRes =
                    dataCardRepository.updateDateOfBirthForCurrentSelection(
                        this,
                        _pickedDateOfBirth.value?.dateOfBirth
                    ).await()

                _onDateOfBirthUpdated.postValue(updateRes)
            }
        }

        fun clearDateOfBirthToBackend() {
            viewModelScope.launchDefault {
                val updateRes =
                    dataCardRepository.updateDateOfBirthForCurrentSelection(this, null).await()

                _onDateOfBirthUpdated.postValue(updateRes)
            }
        }
    }