Show subscription prices in local currency

app/src/googleplay/java/org/tasks/billing/BillingClientImpl.kt

@@ -24,6 +24,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.suspendCancellableCoroutine
 import kotlinx.coroutines.withContext
+import kotlinx.serialization.json.Json
 import org.tasks.BuildConfig
 import org.tasks.analytics.Firebase
 import org.tasks.jobs.WorkManager
@@ -46,6 +47,29 @@ class BillingClientImpl(
     private var connected = false
     private var onPurchasesUpdated: OnPurchasesUpdated? = null
 
+    override suspend fun getSkus(skus: List<String>): List<Sku> =
+        executeServiceRequest {
+            val skuDetailsResult = withContext(Dispatchers.IO) {
+                billingClient.querySkuDetails(
+                    SkuDetailsParams
+                        .newBuilder()
+                        .setType(SkuType.SUBS)
+                        .setSkusList(skus)
+                        .build()
+                )
+            }
+            skuDetailsResult.billingResult.let {
+                if (!it.success) {
+                    throw IllegalStateException(it.responseCodeString)
+                }
+            }
+            val json = Json { ignoreUnknownKeys = true }
+            skuDetailsResult
+                .skuDetailsList
+                ?.map { json.decodeFromString<Sku>(it.originalJson) }
+                ?: emptyList()
+        }
+
     override suspend fun queryPurchases(throwError: Boolean) = try {
         executeServiceRequest {
             withContext(Dispatchers.IO + NonCancellable) {
@@ -174,11 +198,11 @@ class BillingClientImpl(
             )
         }
 
-    private suspend fun executeServiceRequest(runnable: suspend () -> Unit) {
+    private suspend fun <T> executeServiceRequest(runnable: suspend () -> T): T {
         if (!connected) {
             connect()
         }
-        runnable()
+        return runnable()
     }
 
     override suspend fun consume(sku: String) {

app/src/main/java/org/tasks/billing/BillingClient.kt

@@ -12,4 +12,5 @@ interface BillingClient {
         oldPurchase: Purchase? = null
     )
     suspend fun acknowledge(purchase: Purchase)
+    suspend fun getSkus(skus: List<String>): List<Sku>
 }

app/src/main/java/org/tasks/billing/PurchaseActivity.kt

@@ -47,6 +47,7 @@ class PurchaseActivity : AppCompatActivity(), OnPurchasesUpdated {
                     setPrice = { viewModel.setPrice(it) },
                     setNameYourPrice = { viewModel.setNameYourPrice(it) },
                     onBack = { finish() },
+                    skus = state.skus,
                     snackbarHostState = snackbarHostState,
                 )
                 LaunchedEffect(state.error) {

app/src/main/java/org/tasks/billing/PurchaseActivityViewModel.kt

@@ -33,6 +33,7 @@ class PurchaseActivityViewModel @Inject constructor(
         val price: Float = -1f,
         val subscription: Purchase? = null,
         val error: String? = null,
+        val skus: List<Sku> = emptyList(),
     )
 
     private val purchaseReceiver = object : BroadcastReceiver() {
@@ -72,6 +73,19 @@ class PurchaseActivityViewModel @Inject constructor(
                     it.copy(error = e.message)
                 }
             }
+            try {
+                val skus =
+                    (1..25).map { it.toSku(false) }
+                    .plus((1..3).map { it.toSku(true) })
+                    .plus(30.toSku(false))
+                _viewState.update {
+                    it.copy(skus = billingClient.getSkus(skus))
+                }
+            } catch (e: Exception) {
+                _viewState.update {
+                    it.copy(error = e.message)
+                }
+            }
         }
 
         firebase.logEvent(R.string.event_showed_purchase_dialog)
@@ -83,7 +97,7 @@ class PurchaseActivityViewModel @Inject constructor(
     }
 
     fun purchase(activity: Activity, price: Int, monthly: Boolean) = viewModelScope.launch {
-        val newSku = String.format(Locale.US, "%s_%02d", if (monthly) "monthly" else "annual", price)
+        val newSku = price.toSku(monthly)
         try {
             billingClient.initiatePurchaseFlow(
                 activity,
@@ -109,5 +123,8 @@ class PurchaseActivityViewModel @Inject constructor(
     companion object {
         const val EXTRA_GITHUB = "extra_github"
         const val EXTRA_NAME_YOUR_PRICE = "extra_name_your_price"
+
+        fun Int.toSku(monthly: Boolean) =
+            String.format(Locale.US, "%s_%02d", if (monthly) "monthly" else "annual", this)
     }
 }

app/src/main/java/org/tasks/billing/Sku.kt

@@ -0,0 +1,9 @@
+package org.tasks.billing
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class Sku(
+    val productId: String,
+    val price: String,
+)

app/src/main/java/org/tasks/compose/Subscription.kt

@@ -60,6 +60,7 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import kotlinx.coroutines.launch
 import org.tasks.R
+import org.tasks.billing.Sku
 import org.tasks.compose.Constants.HALF_KEYLINE
 import org.tasks.compose.Constants.KEYLINE_FIRST
 import org.tasks.compose.PurchaseText.SubscriptionScreen
@@ -145,6 +146,7 @@ object PurchaseText {
         setPrice: (Float) -> Unit,
         setNameYourPrice: (Boolean) -> Unit,
         subscribe: (Int, Boolean) -> Unit,
+        skus: List<Sku>,
         onBack: () -> Unit,
     ) {
         Scaffold(
@@ -221,6 +223,7 @@ object PurchaseText {
                         setNameYourPrice = setNameYourPrice,
                         setPrice = setPrice,
                         subscribe = subscribe,
+                        skus = skus,
                     )
                 }
             }
@@ -271,6 +274,7 @@ object PurchaseText {
         setNameYourPrice: (Boolean) -> Unit,
         setPrice: (Float) -> Unit,
         subscribe: (Int, Boolean) -> Unit,
+        skus: List<Sku>,
     ) {
         Column(
             modifier = Modifier.fillMaxWidth(),
@@ -282,9 +286,13 @@ object PurchaseText {
                     sliderPosition = sliderPosition,
                     setPrice = setPrice,
                     subscribe = subscribe,
+                    skus = skus,
                 )
             } else {
-                TasksAccount(subscribe)
+                TasksAccount(
+                    skus = skus,
+                    subscribe = subscribe
+                )
             }
             Spacer(Modifier.height(KEYLINE_FIRST))
             val scope = rememberCoroutineScope()
@@ -373,7 +381,10 @@ object PurchaseText {
     }
 
     @Composable
-    fun TasksAccount(subscribe: (Int, Boolean) -> Unit) {
+    fun TasksAccount(
+        skus: List<Sku>,
+        subscribe: (Int, Boolean) -> Unit,
+    ) {
         Column(
             modifier = Modifier
                 .fillMaxWidth()
@@ -385,15 +396,19 @@ object PurchaseText {
                 horizontalArrangement = Arrangement.Center
             ) {
                 PurchaseButton(
-                    price = 30,
+                    price = remember(skus) {
+                        skus.find { it.productId == "annual_30" }?.price ?: "$30"
+                    },
                     popperText = "${stringResource(R.string.save_percent, 16)} $POPPER",
-                    onClick = subscribe
+                    onClick = { subscribe(30, false) },
                 )
                 Spacer(Modifier.width(KEYLINE_FIRST))
                 PurchaseButton(
-                    price = 3,
+                    price = remember (skus) {
+                        skus.find { it.productId == "monthly_03" }?.price ?: "$3"
+                    },
                     monthly = true,
-                    onClick = subscribe
+                    onClick = { subscribe(3, true) },
                 )
             }
         }
@@ -401,21 +416,21 @@ object PurchaseText {
 
     @Composable
     fun PurchaseButton(
-        price: Int,
+        price: String,
         monthly: Boolean = false,
         popperText: String = "",
-        onClick: (Int, Boolean) -> Unit,
+        onClick: () -> Unit,
     ) {
         Column(horizontalAlignment = Alignment.CenterHorizontally) {
             Button(
-                onClick = { onClick(price, monthly) },
+                onClick = { onClick() },
                 colors = ButtonDefaults.textButtonColors(
                     containerColor = MaterialTheme.colorScheme.secondary
                 )
             ) {
                 Text(
                     text = stringResource(
-                        if (monthly) R.string.price_per_month else R.string.price_per_year,
+                        if (monthly) R.string.price_per_month_with_currency else R.string.price_per_year_with_currency,
                         price
                     ),
                     color = MaterialTheme.colorScheme.onSecondary,
@@ -435,6 +450,7 @@ object PurchaseText {
         sliderPosition: Float,
         setPrice: (Float) -> Unit,
         subscribe: (Int, Boolean) -> Unit,
+        skus: List<Sku>,
     ) {
         Column(
             modifier = Modifier.fillMaxWidth(),
@@ -460,21 +476,32 @@ object PurchaseText {
                 modifier = Modifier.fillMaxWidth(),
                 horizontalArrangement = Arrangement.Center
             ) {
+                val price = sliderPosition.toInt()
                 PurchaseButton(
-                    price = sliderPosition.toInt(),
+                    price = remember (skus, price) {
+                        skus
+                            .find { it.productId == "annual_${price.toString().padStart(2, '0')}" }
+                            ?.price
+                            ?: "$$price"
+                    },
                     popperText = if (sliderPosition.toInt() >= 7)
                         "${stringResource(R.string.above_average, 16)} $POPPER"
                     else
                         "",
-                    onClick = subscribe
+                    onClick = { subscribe(sliderPosition.toInt(), false) },
                 )
                 if (sliderPosition.toInt() < 3) {
                     Spacer(Modifier.width(KEYLINE_FIRST))
                     PurchaseButton(
-                        price = sliderPosition.toInt(),
+                        price = remember (skus, price) {
+                            skus
+                                .find { it.productId == "monthly_${price.toString().padStart(2, '0')}" }
+                                ?.price
+                                ?: "$$price"
+                        },
                         monthly = true,
                         popperText = "${stringResource(R.string.above_average)} $POPPER",
-                        onClick = subscribe
+                        onClick = { subscribe(price, true) },
                     )
                 }
             }
@@ -494,6 +521,7 @@ private fun PurchaseDialogPreview() {
             sliderPosition = 1f,
             setPrice = {},
             setNameYourPrice = {},
+            skus = emptyList(),
         )
     }
 }
@@ -510,6 +538,7 @@ private fun NameYourPricePreview() {
             sliderPosition = 4f,
             setPrice = {},
             setNameYourPrice = {},
+            skus = emptyList(),
         )
     }
 }

app/src/main/res/values/strings.xml

@@ -634,6 +634,8 @@ File %1$s contained %2$s.\n\n
   <string name="no_google_play_subscription">No eligible Google Play subscription found</string>
   <string name="price_per_year">$%s/year</string>
   <string name="price_per_month">$%s/month</string>
+  <string name="price_per_month_with_currency">%s/month</string>
+  <string name="price_per_year_with_currency">%s/year</string>
   <string name="current_subscription">Current subscription: %s</string>
   <string name="follow_reddit">Join r/tasks</string>
   <string name="follow_twitter">Follow @tasks_org</string>