Extract queries (WIP)

Author: bubelov

app/src/main/kotlin/api/standalone/StandaloneApi.kt

@@ -17,6 +17,7 @@ import db.Entry
 import db.EntryWithoutContent
 import db.Feed
 import db.Link
+import feeds.FeedQueries
 import http.await
 import kotlinx.coroutines.Deferred
 import kotlinx.coroutines.Dispatchers
@@ -125,7 +126,7 @@ class StandaloneNewsApi(
     }
 
     override suspend fun getFeeds(): Result<List<Feed>> {
-        return runCatching { db.feedQueries.selectAll().asFlow().mapToList().first() }
+        return runCatching { FeedQueries(db).selectAll() }
     }
 
     override suspend fun updateFeedTitle(feedId: String, newTitle: String): Result<Unit> {

app/src/main/kotlin/db/CursorExt.kt

@@ -0,0 +1,11 @@
+package db
+
+import android.database.Cursor
+
+public fun Cursor.getNullableBoolean(columnIndex: Int): Boolean? {
+    if (isNull(columnIndex)) {
+        return null
+    } else {
+        return getInt(columnIndex) == 1
+    }
+}

app/src/main/kotlin/db/Feed.kt

@@ -4,7 +4,7 @@ data class Feed(
     val id: String,
     val links: List<Link>,
     val title: String,
-    val extOpenEntriesInBrowser: Boolean,
+    val extOpenEntriesInBrowser: Boolean?,
     val extBlockedWords: String,
     val extShowPreviewImages: Boolean?,
 )

app/src/main/kotlin/feeds/FeedQueries.kt

@@ -0,0 +1,40 @@
+package feeds
+
+import android.database.Cursor
+import android.database.sqlite.SQLiteDatabase
+import db.Feed
+import db.Link
+import db.getNullableBoolean
+
+class FeedQueries(private val database: SQLiteDatabase) {
+    companion object {
+        private val PROJECTION_FULL = arrayOf(
+            "id",
+            "links",
+            "title",
+            "ext_open_entries_in_browser",
+            "ext_blocked_words",
+            "ext_show_preview_images",
+        )
+    }
+
+    fun selectAll(): List<Feed> {
+        val res = mutableListOf<Feed>()
+        val cursor = database.query("feed", PROJECTION_FULL, "", emptyArray(), "", "", "", "")
+        while (cursor.moveToNext()) {
+            res += Feed(
+                id = cursor.getString(0),
+                links = cursor.getLinks(1),
+                title = cursor.getString(2),
+                extOpenEntriesInBrowser = cursor.getNullableBoolean(3),
+                extBlockedWords = cursor.getString(4),
+                extShowPreviewImages = cursor.getNullableBoolean(5),
+            )
+        }
+        return res
+    }
+
+    private fun Cursor.getLinks(columnIndex: Int): List<Link> {
+        return emptyList() // TODO
+    }
+}