Export CSV transactions without requiring storage permission.
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parent
830eceeaad
commit
3db6ebb6b0
4 changed files with 102 additions and 114 deletions
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@ -0,0 +1,86 @@
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package cy.agorise.bitsybitshareswallet.domain.usecase
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import android.content.Context
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import android.util.Log
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import androidx.core.os.ConfigurationCompat
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import androidx.documentfile.provider.DocumentFile
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import com.opencsv.CSVWriter
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import cy.agorise.bitsybitshareswallet.R
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import cy.agorise.bitsybitshareswallet.database.joins.TransferDetail
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.withContext
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import java.io.OutputStreamWriter
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import java.text.SimpleDateFormat
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import java.util.*
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import kotlin.math.pow
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class ExportTransactionsToCsvUseCase(private val applicationContext: Context) {
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suspend operator fun invoke(
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transactions: List<TransferDetail>,
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folderDocumentFile: DocumentFile
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) = withContext(Dispatchers.IO) { // TODO Inject Dispatcher
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// Create the PDF file name
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val fileName = applicationContext.resources.let {
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"${it.getString(R.string.app_name)}-${it.getString(R.string.title_transactions)}.csv"
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}
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// Obtains the path to store the PDF
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val csvDocUri = folderDocumentFile.createFile("text/csv", fileName)?.uri
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val contentResolver = applicationContext.contentResolver
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val csvOutputStream = contentResolver.openOutputStream(csvDocUri!!, "w")
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val csvWriter = CSVWriter(OutputStreamWriter(csvOutputStream))
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// Add the table header
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csvWriter.writeNext(
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arrayOf(
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R.string.title_from, R.string.title_to, R.string.title_memo, R.string.title_date,
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R.string.title_time, R.string.title_amount, R.string.title_equivalent_value
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).map { columnNameId -> applicationContext.getString(columnNameId) }.toTypedArray()
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)
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// Configure date and time formats to reuse in all the transfers
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val locale = ConfigurationCompat.getLocales(applicationContext.resources.configuration)[0]
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val dateFormat = SimpleDateFormat("MM-dd-yyyy", locale)
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val timeFormat = SimpleDateFormat("HH:mm:ss", locale)
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// Save all the transfers information
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val row = Array(7) { "" } // Array initialized with empty strings
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for ((index, transferDetail) in transactions.withIndex()) {
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val date = Date(transferDetail.date * 1000)
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row[0] = transferDetail.from ?: "" // From
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row[1] = transferDetail.to ?: "" // To
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row[2] = transferDetail.memo // Memo
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row[3] = dateFormat.format(date) // Date
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row[4] = timeFormat.format(date) // Time
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// Asset Amount
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val assetPrecision = transferDetail.assetPrecision
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val assetAmount = transferDetail.assetAmount / 10.0.pow(assetPrecision)
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row[5] =
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String.format("%.${assetPrecision}f %s", assetAmount, transferDetail.assetSymbol)
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// Fiat Equivalent
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row[6] = if (transferDetail.fiatAmount != null && transferDetail.fiatSymbol != null) {
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val currency = Currency.getInstance(transferDetail.fiatSymbol)
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val fiatAmount = transferDetail.fiatAmount / 10.0.pow(currency.defaultFractionDigits)
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String.format(
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"%.${currency.defaultFractionDigits}f %s",
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fiatAmount,
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currency.currencyCode
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)
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} else {
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""
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}
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csvWriter.writeNext(row)
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// TODO update progress
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}
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csvWriter.close()
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Log.d("ExportTransactionsToCsv", "CSV generated and saved")
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}
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}
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@ -12,6 +12,7 @@ import kotlinx.coroutines.withContext
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import java.io.BufferedOutputStream
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import java.text.SimpleDateFormat
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import java.util.*
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import kotlin.math.pow
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class ExportTransactionsToPdfUseCase(private val applicationContext: Context) {
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@ -45,8 +46,10 @@ class ExportTransactionsToPdfUseCase(private val applicationContext: Context) {
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val tableData = mutableListOf<List<Cell>>()
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// Add column names/headers
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val columnNames = intArrayOf(R.string.title_from, R.string.title_to, R.string.title_memo, R.string.title_date,
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R.string.title_time, R.string.title_amount, R.string.title_equivalent_value)
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val columnNames = intArrayOf(
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R.string.title_from, R.string.title_to, R.string.title_memo, R.string.title_date,
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R.string.title_time, R.string.title_amount, R.string.title_equivalent_value
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)
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val header = columnNames.map { columnName ->
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Cell(f1, applicationContext.getString(columnName)).apply { setPadding(2f) }
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@ -56,10 +59,8 @@ class ExportTransactionsToPdfUseCase(private val applicationContext: Context) {
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tableData.add(header)
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// Add the table contents
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applicationContext.let { context ->
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val locale = ConfigurationCompat.getLocales(context.resources.configuration)[0]
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tableData.addAll(getData(transactions, f2, locale))
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}
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val locale = ConfigurationCompat.getLocales(applicationContext.resources.configuration)[0]
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tableData.addAll(getData(transactions, f2, locale))
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// Configure the PDF table
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table.setData(tableData, Table.DATA_HAS_1_HEADER_ROWS)
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@ -82,14 +83,14 @@ class ExportTransactionsToPdfUseCase(private val applicationContext: Context) {
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pdf.close()
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Log.d("ExportTransactionsToPdf","PDF generated and saved")
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Log.d("ExportTransactionsToPdf", "PDF generated and saved")
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}
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private suspend fun getData(
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transferDetails: List<TransferDetail>,
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font: Font,
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locale: Locale
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): List<List<Cell>> = withContext(Dispatchers.Default) { // TODO Inject Dispatcher
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): List<List<Cell>> = withContext(Dispatchers.IO) { // TODO Inject Dispatcher
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val tableData = mutableListOf<List<Cell>>()
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@ -112,8 +113,7 @@ class ExportTransactionsToPdfUseCase(private val applicationContext: Context) {
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// Asset Amount
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val assetPrecision = transferDetail.assetPrecision
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val assetAmount =
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transferDetail.assetAmount.toDouble() / Math.pow(10.0, assetPrecision.toDouble())
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val assetAmount = transferDetail.assetAmount / 10.0.pow(assetPrecision)
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cols.add(
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String.format(
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"%.${assetPrecision}f %s",
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@ -125,8 +125,8 @@ class ExportTransactionsToPdfUseCase(private val applicationContext: Context) {
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// Fiat Equivalent
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if (transferDetail.fiatAmount != null && transferDetail.fiatSymbol != null) {
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val currency = Currency.getInstance(transferDetail.fiatSymbol)
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val fiatAmount = transferDetail.fiatAmount.toDouble() /
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Math.pow(10.0, currency.defaultFractionDigits.toDouble())
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val fiatAmount =
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transferDetail.fiatAmount / 10.0.pow(currency.defaultFractionDigits)
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cols.add(
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String.format(
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"%.${currency.defaultFractionDigits}f %s",
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@ -7,6 +7,7 @@ import androidx.documentfile.provider.DocumentFile
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import androidx.lifecycle.*
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import com.google.android.material.datepicker.MaterialDatePicker
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import cy.agorise.bitsybitshareswallet.database.joins.TransferDetail
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import cy.agorise.bitsybitshareswallet.domain.usecase.ExportTransactionsToCsvUseCase
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import cy.agorise.bitsybitshareswallet.domain.usecase.ExportTransactionsToPdfUseCase
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import cy.agorise.bitsybitshareswallet.repositories.TransferDetailRepository
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import cy.agorise.bitsybitshareswallet.utils.Helper
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@ -20,6 +21,7 @@ class TransactionsViewModel(application: Application) : AndroidViewModel(applica
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// TODO Inject below dependencies
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private val exportTransactionsToPdfUseCase = ExportTransactionsToPdfUseCase(application)
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private val exportTransactionsToCsvUseCase = ExportTransactionsToCsvUseCase(application)
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private val mRepository = TransferDetailRepository(application)
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/**
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@ -159,7 +161,8 @@ class TransactionsViewModel(application: Application) : AndroidViewModel(applica
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if (exportCsv) {
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viewModelScope.launch {
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// TODO Export CSV
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// TODO Show success/failure message
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exportTransactionsToCsvUseCase(transactions, folderDocumentFile)
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}
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}
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}
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@ -1,101 +0,0 @@
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package cy.agorise.bitsybitshareswallet.utils
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import android.content.Context
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import android.os.AsyncTask
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import android.os.Environment
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import android.util.Log
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import com.opencsv.CSVWriter
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import cy.agorise.bitsybitshareswallet.R
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import cy.agorise.bitsybitshareswallet.database.joins.TransferDetail
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import java.io.File
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import java.io.FileWriter
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import java.lang.ref.WeakReference
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import java.text.SimpleDateFormat
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import java.util.*
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/**
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* AsyncTask subclass used to move the CSV generation procedure to a background thread
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* and inform the UI of the progress.
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*/
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class CSVGenerationTask(context: Context) : AsyncTask<List<TransferDetail>, Int, String>() {
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companion object {
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private const val TAG = "CSVGenerationTask"
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}
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private val mContext: WeakReference<Context> = WeakReference(context)
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override fun doInBackground(vararg params: List<TransferDetail>): String {
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return createCSVDocument(params[0])
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}
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private fun createCSVDocument(transferDetails: List<TransferDetail>): String {
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return try {
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// Create and configure a new CSV file to save the transfers list
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val externalStorageFolder = Environment.getExternalStorageDirectory().absolutePath + File.separator
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val fileName = mContext.get()?.resources?.let {
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"${it.getString(R.string.app_name)}-${it.getString(R.string.title_transactions)}"} + ".csv"
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val file = File(externalStorageFolder, fileName)
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file.createNewFile()
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val csvWriter = CSVWriter(FileWriter(file))
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// Add the table header
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val row = Array(7) {""} // Array initialized with empty strings
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val columnNames = arrayOf(R.string.title_from, R.string.title_to, R.string.title_memo, R.string.title_date,
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R.string.title_time, R.string.title_amount, R.string.title_equivalent_value)
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for ((i, columnName) in columnNames.withIndex()) {
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row[i] = mContext.get()?.getString(columnName) ?: ""
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}
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csvWriter.writeNext(row)
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// Configure date and time formats to reuse in all the transfers
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val locale = mContext.get()?.resources?.configuration?.locale
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val dateFormat = SimpleDateFormat("MM-dd-yyyy", locale)
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val timeFormat = SimpleDateFormat("HH:mm:ss", locale)
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// Save all the transfers information
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for ( (index, transferDetail) in transferDetails.withIndex()) {
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val date = Date(transferDetail.date * 1000)
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row[0] = transferDetail.from ?: "" // From
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row[1] = transferDetail.to ?: "" // To
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row[2] = transferDetail.memo // Memo
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row[3] = dateFormat.format(date) // Date
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row[4] = timeFormat.format(date) // Time
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// Asset Amount
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val assetPrecision = transferDetail.assetPrecision
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val assetAmount = transferDetail.assetAmount.toDouble() / Math.pow(10.0, assetPrecision.toDouble())
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row[5] = String.format("%.${assetPrecision}f %s", assetAmount, transferDetail.assetSymbol)
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// Fiat Equivalent
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row[6] = if (transferDetail.fiatAmount != null && transferDetail.fiatSymbol != null) {
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val currency = Currency.getInstance(transferDetail.fiatSymbol)
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val fiatAmount = transferDetail.fiatAmount.toDouble() /
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Math.pow(10.0, currency.defaultFractionDigits.toDouble())
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String.format("%.${currency.defaultFractionDigits}f %s", fiatAmount, currency.currencyCode)
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} else {
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""
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}
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csvWriter.writeNext(row)
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// TODO update progress
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}
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csvWriter.close()
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"CSV generated and saved: ${file.absolutePath}"
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} catch (e: Exception) {
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Log.e(TAG, "Exception while trying to generate a CSV. Msg: " + e.message)
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"Unable to generate CSV. Please retry. Error: ${e.message}"
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}
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}
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override fun onProgressUpdate(values: Array<Int>) {
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// TODO show progress
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}
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override fun onPostExecute(message: String) {
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mContext.get()?.toast(message)
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}
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}
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