Preventing some useless reads and writes when recipes already exist and the md file is the same

app/src/main/java/xyz/pixelatedw/recipe/data/Recipe.kt

@@ -10,6 +10,7 @@ import androidx.room.Entity
 import androidx.room.Insert
 import androidx.room.OnConflictStrategy
 import androidx.room.PrimaryKey
+import androidx.room.Query
 import java.io.File
 
 @Entity
@@ -18,7 +19,8 @@ data class Recipe(
 	val title: String,
 	val preview: String?,
 	val lastModified: Long,
-	val content: String
+	val content: String,
+	val hash: Int
 ) {
 	fun previewImage(ctx: Context): Bitmap? {
 		if (this.preview != null) {
@@ -41,4 +43,7 @@ interface RecipeDao {
 
 	@Delete
 	fun delete(recipe: Recipe)
+
+	@Query("SELECT EXISTS(SELECT hash FROM recipe WHERE recipe.hash = :hash LIMIT 1)")
+	fun hasHash(hash: Int): Boolean
 }

app/src/main/java/xyz/pixelatedw/recipe/ui/components/RecipePreview.kt

@@ -33,11 +33,11 @@ fun RecipePreview(entry: RecipeWithTags, previewUri: Bitmap?, onClick: () -> Uni
 					bitmap = previewUri.asImageBitmap(),
 					contentDescription = "Recipe image",
 					contentScale = ContentScale.Crop,
-					modifier = Modifier.size(256.dp).padding(top = 16.dp, bottom = 16.dp),
+					modifier = Modifier.size(256.dp).padding(top = 16.dp, bottom = 8.dp),
 				)
 			}
 		}
-		Row(horizontalArrangement = Arrangement.Center, modifier = Modifier.fillMaxWidth()) {
+		Row(horizontalArrangement = Arrangement.Center, modifier = Modifier.fillMaxWidth().padding(bottom = 8.dp)) {
 			Text(
 				text = entry.recipe.title,
 				modifier = Modifier.fillMaxWidth(),

app/src/main/java/xyz/pixelatedw/recipe/utils/RecipeParser.kt

@@ -65,6 +65,12 @@ private fun parseRecipe(ctx: Context, db: AppDatabase, file: DocumentFile) {
 	val inputStream = ctx.contentResolver.openInputStream(file.uri)
 	val reader = BufferedReader(InputStreamReader(inputStream))
 	val text = reader.readText()
+
+	val hash = text.hashCode() // Probably not the best way but its stable and works
+	if (db.recipeDao().hasHash(hash)) {
+		return
+	}
+
 	val lines = text.lines()
 
 	val sb = StringBuilder()
@@ -133,12 +139,11 @@ private fun parseRecipe(ctx: Context, db: AppDatabase, file: DocumentFile) {
 		title = recipeTitle,
 		preview = recipePreview,
 		lastModified = lastModified,
-		content = content
+		content = content,
+		hash = hash
 	)
 
 	db.recipeDao().insert(recipe)
 
-	println(recipe)
-
 	reader.close()
 }