From e2bb38d7307ea55466842a75530ec96163ef5d6b Mon Sep 17 00:00:00 2001
From: William Brawner <me@wbrawner.com>
Date: Tue, 1 Oct 2024 20:39:27 -0600
Subject: [PATCH] Fix opening files from external apps

I somehow missed this when migrating to compose and worse yet, didn't have any tests covering it. That's been remedied now so hopefully it continues to work well into the future

Closes #90
---
 .../wbrawner/simplemarkdown/MarkdownTests.kt  | 23 +++++++++++++++++++
 .../simplemarkdown/MarkdownViewModel.kt       |  4 ----
 .../wbrawner/simplemarkdown/ui/MainScreen.kt  |  5 ++++
 .../simplemarkdown/utility/Extensions.kt      | 22 ++++++++++++------
 4 files changed, 43 insertions(+), 11 deletions(-)

diff --git a/app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/MarkdownTests.kt b/app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/MarkdownTests.kt
index 6502c20..6bf015a 100644
--- a/app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/MarkdownTests.kt
+++ b/app/src/androidTest/kotlin/com/wbrawner/simplemarkdown/MarkdownTests.kt
@@ -182,6 +182,29 @@ class MarkdownTests {
         }
     }
 
+    @Test
+    fun launchWithContentUriTest() = runTest {
+        val markdownText = "# UI Testing\n\nThe quick brown fox jumped over the lazy dog."
+        file.outputStream().writer().use { it.write(markdownText) }
+        val fileUri = FileProvider.getUriForFile(
+            getApplicationContext(),
+            "${BuildConfig.APPLICATION_ID}.fileprovider",
+            file
+        )
+        ActivityScenario.launch<MainActivity>(
+            Intent(
+                Intent.ACTION_VIEW,
+                fileUri,
+                getInstrumentation().targetContext,
+                MainActivity::class.java
+            )
+        )
+        onMainScreen(composeRule) {
+            awaitIdle()
+            checkMarkdownEquals(markdownText)
+            checkTitleEquals("temp.md")
+        }
+    }
 
     @Test
     fun openEditAndSaveMarkdownTest() = runTest {
diff --git a/app/src/main/java/com/wbrawner/simplemarkdown/MarkdownViewModel.kt b/app/src/main/java/com/wbrawner/simplemarkdown/MarkdownViewModel.kt
index d3465b9..161de7b 100644
--- a/app/src/main/java/com/wbrawner/simplemarkdown/MarkdownViewModel.kt
+++ b/app/src/main/java/com/wbrawner/simplemarkdown/MarkdownViewModel.kt
@@ -14,7 +14,6 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
-import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withContext
@@ -50,9 +49,6 @@ class MarkdownViewModel(
     private val saveMutex = Mutex()
 
     init {
-        viewModelScope.launch {
-            load(null)
-        }
         preferenceHelper.observe<Boolean>(Preference.LOCK_SWIPING)
             .onEach {
                 _state.value = _state.value.copy(lockSwiping = it)
diff --git a/app/src/main/java/com/wbrawner/simplemarkdown/ui/MainScreen.kt b/app/src/main/java/com/wbrawner/simplemarkdown/ui/MainScreen.kt
index 5cef4d2..fd5a5e6 100644
--- a/app/src/main/java/com/wbrawner/simplemarkdown/ui/MainScreen.kt
+++ b/app/src/main/java/com/wbrawner/simplemarkdown/ui/MainScreen.kt
@@ -62,6 +62,7 @@ import com.wbrawner.simplemarkdown.MarkdownViewModel
 import com.wbrawner.simplemarkdown.ParameterizedText
 import com.wbrawner.simplemarkdown.R
 import com.wbrawner.simplemarkdown.Route
+import com.wbrawner.simplemarkdown.utility.activity
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.map
@@ -87,6 +88,10 @@ fun MainScreen(
     val alert by viewModel.collectAsState(EditorState::alert, null)
     val saveCallback by viewModel.collectAsState(EditorState::saveCallback, null)
     val lockSwiping by viewModel.collectAsState(EditorState::lockSwiping, false)
+    val intentData = LocalContext.current.activity?.intent?.data
+    LaunchedEffect(intentData) {
+        viewModel.load(intentData?.toString())
+    }
     LaunchedEffect(enableAutosave) {
         if (!enableAutosave) return@LaunchedEffect
         while (isActive) {
diff --git a/app/src/main/java/com/wbrawner/simplemarkdown/utility/Extensions.kt b/app/src/main/java/com/wbrawner/simplemarkdown/utility/Extensions.kt
index 2b9ba0a..7be1b1b 100644
--- a/app/src/main/java/com/wbrawner/simplemarkdown/utility/Extensions.kt
+++ b/app/src/main/java/com/wbrawner/simplemarkdown/utility/Extensions.kt
@@ -1,11 +1,11 @@
 package com.wbrawner.simplemarkdown.utility
 
+import android.app.Activity
 import android.content.Context
+import android.content.ContextWrapper
 import android.content.res.AssetManager
 import android.net.Uri
 import android.provider.OpenableColumns
-import android.view.View
-import android.view.inputmethod.InputMethodManager
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import java.io.Reader
@@ -22,11 +22,11 @@ suspend fun Uri.getName(context: Context): String {
         if ("content" == scheme) {
             withContext(Dispatchers.IO) {
                 context.contentResolver.query(
-                        this@getName,
-                        null,
-                        null,
-                        null,
-                        null
+                    this@getName,
+                    null,
+                    null,
+                    null,
+                    null
                 )?.use {
                     val nameIndex = it.getColumnIndex(OpenableColumns.DISPLAY_NAME)
                     it.moveToFirst()
@@ -41,3 +41,11 @@ suspend fun Uri.getName(context: Context): String {
     }
     return fileName ?: "Untitled.md"
 }
+
+@Suppress("RecursivePropertyAccessor")
+val Context.activity: Activity?
+    get() = when (this) {
+        is Activity -> this
+        is ContextWrapper -> baseContext.activity
+        else -> null
+    }
\ No newline at end of file