269 lines
9.7 KiB
Kotlin
269 lines
9.7 KiB
Kotlin
/* Copyright 2018 Conny Duck
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*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with Tusky; if not,
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* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky.viewmodel
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import android.app.Application
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import android.net.Uri
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import androidx.core.net.toUri
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import androidx.lifecycle.MutableLiveData
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.viewModelScope
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import at.connyduck.calladapter.networkresult.fold
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import com.keylesspalace.tusky.appstore.EventHub
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import com.keylesspalace.tusky.appstore.ProfileEditedEvent
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import com.keylesspalace.tusky.components.instanceinfo.InstanceInfo
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import com.keylesspalace.tusky.components.instanceinfo.InstanceInfoRepository
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import com.keylesspalace.tusky.entity.Account
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import com.keylesspalace.tusky.entity.StringField
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import com.keylesspalace.tusky.network.MastodonApi
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import com.keylesspalace.tusky.util.Error
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import com.keylesspalace.tusky.util.Loading
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import com.keylesspalace.tusky.util.Resource
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import com.keylesspalace.tusky.util.Success
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import com.keylesspalace.tusky.util.getServerErrorMessage
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import com.keylesspalace.tusky.util.randomAlphanumericString
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import java.io.File
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import javax.inject.Inject
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.MutableStateFlow
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import kotlinx.coroutines.flow.SharingStarted
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import kotlinx.coroutines.flow.asFlow
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import kotlinx.coroutines.flow.asStateFlow
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import kotlinx.coroutines.flow.shareIn
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import kotlinx.coroutines.launch
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import okhttp3.MediaType.Companion.toMediaTypeOrNull
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import okhttp3.MultipartBody
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import okhttp3.RequestBody.Companion.asRequestBody
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import okhttp3.RequestBody.Companion.toRequestBody
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private const val HEADER_FILE_NAME = "header.png"
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private const val AVATAR_FILE_NAME = "avatar.png"
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internal data class ProfileDataInUi(
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val displayName: String,
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val note: String,
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val locked: Boolean,
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val fields: List<StringField>
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)
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class EditProfileViewModel @Inject constructor(
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private val mastodonApi: MastodonApi,
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private val eventHub: EventHub,
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private val application: Application,
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private val instanceInfoRepo: InstanceInfoRepository
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) : ViewModel() {
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val profileData = MutableLiveData<Resource<Account>>()
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val avatarData = MutableLiveData<Uri>()
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val headerData = MutableLiveData<Uri>()
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val saveData = MutableLiveData<Resource<Nothing>>()
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val instanceData: Flow<InstanceInfo> = instanceInfoRepo::getUpdatedInstanceInfoOrFallback.asFlow()
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.shareIn(viewModelScope, SharingStarted.Eagerly, replay = 1)
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private val _isChanged = MutableStateFlow(false)
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val isChanged = _isChanged.asStateFlow()
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private var apiProfileAccount: Account? = null
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fun obtainProfile() = viewModelScope.launch {
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if (profileData.value == null || profileData.value is Error) {
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profileData.postValue(Loading())
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mastodonApi.accountVerifyCredentials().fold(
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{ profile ->
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apiProfileAccount = profile
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profileData.postValue(Success(profile))
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},
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{
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profileData.postValue(Error())
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}
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)
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}
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}
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fun getAvatarUri() = getCacheFileForName(AVATAR_FILE_NAME).toUri()
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fun getHeaderUri() = getCacheFileForName(HEADER_FILE_NAME).toUri()
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fun newAvatarPicked() {
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avatarData.value = getAvatarUri()
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}
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fun newHeaderPicked() {
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headerData.value = getHeaderUri()
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}
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internal fun dataChanged(newProfileData: ProfileDataInUi) {
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_isChanged.value = getProfileDiff(apiProfileAccount, newProfileData).hasChanges()
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}
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internal fun save(newProfileData: ProfileDataInUi) {
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if (saveData.value is Loading || profileData.value !is Success) {
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return
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}
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saveData.value = Loading()
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val diff = getProfileDiff(apiProfileAccount, newProfileData)
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if (!diff.hasChanges()) {
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// if nothing has changed, there is no need to make an api call
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saveData.value = Success()
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return
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}
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viewModelScope.launch {
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var avatarFileBody: MultipartBody.Part? = null
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diff.avatarFile?.let {
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avatarFileBody = MultipartBody.Part.createFormData(
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"avatar",
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randomAlphanumericString(12),
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it.asRequestBody("image/png".toMediaTypeOrNull())
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)
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}
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var headerFileBody: MultipartBody.Part? = null
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diff.headerFile?.let {
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headerFileBody = MultipartBody.Part.createFormData(
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"header",
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randomAlphanumericString(12),
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it.asRequestBody("image/png".toMediaTypeOrNull())
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)
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}
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mastodonApi.accountUpdateCredentials(
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diff.displayName?.toRequestBody(MultipartBody.FORM),
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diff.note?.toRequestBody(MultipartBody.FORM),
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diff.locked?.toString()?.toRequestBody(MultipartBody.FORM),
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avatarFileBody,
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headerFileBody,
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diff.field1?.first?.toRequestBody(MultipartBody.FORM),
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diff.field1?.second?.toRequestBody(MultipartBody.FORM),
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diff.field2?.first?.toRequestBody(MultipartBody.FORM),
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diff.field2?.second?.toRequestBody(MultipartBody.FORM),
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diff.field3?.first?.toRequestBody(MultipartBody.FORM),
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diff.field3?.second?.toRequestBody(MultipartBody.FORM),
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diff.field4?.first?.toRequestBody(MultipartBody.FORM),
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diff.field4?.second?.toRequestBody(MultipartBody.FORM)
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).fold(
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{ newAccountData ->
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saveData.postValue(Success())
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eventHub.dispatch(ProfileEditedEvent(newAccountData))
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},
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{ throwable ->
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saveData.postValue(Error(errorMessage = throwable.getServerErrorMessage()))
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}
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)
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}
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}
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// cache activity state for rotation change
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internal fun updateProfile(newProfileData: ProfileDataInUi) {
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if (profileData.value is Success) {
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val newProfileSource = profileData.value?.data?.source?.copy(
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note = newProfileData.note,
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fields = newProfileData.fields
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)
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val newProfile = profileData.value?.data?.copy(
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displayName = newProfileData.displayName,
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locked = newProfileData.locked,
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source = newProfileSource
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)
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profileData.value = Success(newProfile)
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}
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}
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private fun getProfileDiff(
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oldProfileAccount: Account?,
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newProfileData: ProfileDataInUi
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): DiffProfileData {
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val displayName = if (oldProfileAccount?.displayName == newProfileData.displayName) {
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null
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} else {
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newProfileData.displayName
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}
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val note = if (oldProfileAccount?.source?.note == newProfileData.note) {
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null
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} else {
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newProfileData.note
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}
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val locked = if (oldProfileAccount?.locked == newProfileData.locked) {
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null
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} else {
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newProfileData.locked
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}
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val avatarFile = if (avatarData.value != null) {
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getCacheFileForName(AVATAR_FILE_NAME)
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} else {
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null
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}
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val headerFile = if (headerData.value != null) {
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getCacheFileForName(HEADER_FILE_NAME)
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} else {
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null
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}
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// when one field changed, all have to be sent or they unchanged ones would get overridden
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val allFieldsUnchanged = oldProfileAccount?.source?.fields == newProfileData.fields
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val field1 = calculateFieldToUpdate(newProfileData.fields.getOrNull(0), allFieldsUnchanged)
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val field2 = calculateFieldToUpdate(newProfileData.fields.getOrNull(1), allFieldsUnchanged)
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val field3 = calculateFieldToUpdate(newProfileData.fields.getOrNull(2), allFieldsUnchanged)
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val field4 = calculateFieldToUpdate(newProfileData.fields.getOrNull(3), allFieldsUnchanged)
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return DiffProfileData(
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displayName, note, locked, field1, field2, field3, field4, headerFile, avatarFile
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)
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}
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private fun calculateFieldToUpdate(
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newField: StringField?,
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fieldsUnchanged: Boolean
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): Pair<String, String>? {
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if (fieldsUnchanged || newField == null) {
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return null
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}
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return Pair(
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newField.name,
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newField.value
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)
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}
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private fun getCacheFileForName(filename: String): File {
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return File(application.cacheDir, filename)
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}
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private data class DiffProfileData(
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val displayName: String?,
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val note: String?,
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val locked: Boolean?,
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val field1: Pair<String, String>?,
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val field2: Pair<String, String>?,
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val field3: Pair<String, String>?,
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val field4: Pair<String, String>?,
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val headerFile: File?,
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val avatarFile: File?
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) {
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fun hasChanges() = displayName != null || note != null || locked != null ||
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avatarFile != null || headerFile != null || field1 != null || field2 != null ||
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field3 != null || field4 != null
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}
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}
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