Add Reading tab with Jhanas Guide and Retreat Instructions PDFs

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/build.gradle.kts

@@ -51,6 +51,7 @@ android {
 dependencies {
     val composeBom = platform("androidx.compose:compose-bom:2024.10.01")
     implementation(composeBom)
+    implementation("androidx.core:core-ktx:1.13.1")
     implementation("androidx.compose.ui:ui")
     implementation("androidx.compose.material3:material3")
     implementation("androidx.activity:activity-compose:1.9.3")

app/src/main/AndroidManifest.xml

@@ -27,6 +27,16 @@
             android:name=".TimerService"
             android:exported="false"
             android:foregroundServiceType="mediaPlayback" />
+
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="com.marcus.meditationtimer.files"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
     </application>
 
 </manifest>

app/src/main/java/com/marcus/meditationtimer/MainActivity.kt

@@ -1,10 +1,14 @@
 package com.marcus.meditationtimer
 
 import android.Manifest
+import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
 import android.os.Build
 import android.os.Bundle
+import android.widget.Toast
+import androidx.core.content.FileProvider
+import java.io.File
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.result.contract.ActivityResultContracts
@@ -136,6 +140,7 @@ private fun App() {
         ) {
             Tab(selected = tab == 0, onClick = { tab = 0 }, text = { Text("Timer") })
             Tab(selected = tab == 1, onClick = { tab = 1 }, text = { Text("History") })
+            Tab(selected = tab == 2, onClick = { tab = 2 }, text = { Text("Reading") })
         }
         when (tab) {
             0 -> TimerTab()
@@ -143,6 +148,7 @@ private fun App() {
                 onEditSession = { ratingFor = it },
                 onOpenToken = { showTokenDialog = true },
             )
+            2 -> ReadingTab()
         }
     }
 
@@ -430,6 +436,67 @@ private fun SessionRow(s: Session, onClick: () -> Unit) {
     }
 }
 
+// -------------------------------------------------------------- Reading tab
+
+private data class Doc(val title: String, val subtitle: String, val asset: String)
+
+private val DOCS = listOf(
+    Doc("Pragmatic Jhanas Guide", "v4.3", "jhanas-guide.pdf"),
+    Doc("Retreat Instructions", "v6.0.3 · Day 1 & 2", "retreat-instructions.pdf"),
+)
+
+@Composable
+private fun ReadingTab() {
+    val context = LocalContext.current
+    Column(
+        Modifier
+            .fillMaxSize()
+            .padding(20.dp)
+    ) {
+        DOCS.forEach { doc ->
+            Column(
+                Modifier
+                    .fillMaxWidth()
+                    .clickable { openPdf(context, doc) }
+                    .background(Color.White.copy(alpha = 0.05f), RoundedCornerShape(12.dp))
+                    .padding(20.dp)
+            ) {
+                Text(doc.title, color = Color.White.copy(alpha = 0.9f), fontSize = 16.sp)
+                Spacer(Modifier.height(4.dp))
+                Text(doc.subtitle, color = Dim, fontSize = 12.sp)
+            }
+            Spacer(Modifier.height(12.dp))
+        }
+        Text(
+            "Opens in the system PDF viewer.",
+            color = Dim,
+            fontSize = 11.sp,
+            textAlign = TextAlign.Center,
+            modifier = Modifier.fillMaxWidth(),
+        )
+    }
+}
+
+private fun openPdf(context: Context, doc: Doc) {
+    try {
+        val dir = File(context.cacheDir, "reading").apply { mkdirs() }
+        val outFile = File(dir, doc.asset)
+        if (!outFile.exists() || outFile.length() == 0L) {
+            context.assets.open("reading/${doc.asset}").use { input ->
+                outFile.outputStream().use { input.copyTo(it) }
+            }
+        }
+        val uri = FileProvider.getUriForFile(context, "${context.packageName}.files", outFile)
+        context.startActivity(
+            Intent(Intent.ACTION_VIEW)
+                .setDataAndType(uri, "application/pdf")
+                .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+        )
+    } catch (e: Exception) {
+        Toast.makeText(context, "Could not open PDF: ${e.message}", Toast.LENGTH_SHORT).show()
+    }
+}
+
 // ----------------------------------------------------------------- Dialogs
 
 @Composable

app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+    <cache-path name="reading" path="reading/" />
+</paths>