feat(database): add a table for post comments

database/src/main/kotlin/dev/msfjarvis/claw/database/injection/DatabaseModule.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright © 2021-2022 Harsh Shandilya.
+ * Copyright © 2021-2023 Harsh Shandilya.
  * Use of this source code is governed by an MIT-style
  * license that can be found in the LICENSE file or at
  * https://opensource.org/licenses/MIT.
@@ -15,8 +15,9 @@ import com.squareup.anvil.annotations.ContributesTo
 import dagger.Module
 import dagger.Provides
 import dev.msfjarvis.claw.database.LobstersDatabase
+import dev.msfjarvis.claw.database.local.PostComments
 import dev.msfjarvis.claw.database.local.SavedPost
-import dev.msfjarvis.claw.database.model.TagsAdapter
+import dev.msfjarvis.claw.database.model.CSVAdapter
 
 @Module
 @ContributesTo(ApplicationScope::class)
@@ -27,6 +28,10 @@ object DatabaseModule {
   @Provides
   fun provideDatabase(@ForScope(ApplicationScope::class) context: Context): LobstersDatabase {
     val driver = AndroidSqliteDriver(LobstersDatabase.Schema, context, LOBSTERS_DATABASE_NAME)
-    return LobstersDatabase(driver, SavedPost.Adapter(IntColumnAdapter, TagsAdapter()))
+    return LobstersDatabase(
+      driver,
+      PostComments.Adapter(CSVAdapter()),
+      SavedPost.Adapter(IntColumnAdapter, CSVAdapter()),
+    )
   }
 }

database/src/main/kotlin/dev/msfjarvis/claw/database/local/Database.kt

@@ -1,20 +0,0 @@
-/*
- * Copyright © 2021-2022 Harsh Shandilya.
- * Use of this source code is governed by an MIT-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/MIT.
- */
-package dev.msfjarvis.claw.database.local
-
-import android.content.Context
-import app.cash.sqldelight.adapter.primitive.IntColumnAdapter
-import app.cash.sqldelight.driver.android.AndroidSqliteDriver
-import dev.msfjarvis.claw.database.LobstersDatabase
-import dev.msfjarvis.claw.database.model.TagsAdapter
-
-internal const val LobstersDatabaseName = "SavedPosts.db"
-
-fun createDatabase(context: Context): LobstersDatabase {
-  val driver = AndroidSqliteDriver(LobstersDatabase.Schema, context, LobstersDatabaseName)
-  return LobstersDatabase(driver, SavedPost.Adapter(IntColumnAdapter, TagsAdapter()))
-}

database/src/main/kotlin/dev/msfjarvis/claw/database/model/CSVAdapter.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright © 2021-2022 Harsh Shandilya.
+ * Copyright © 2021-2023 Harsh Shandilya.
  * Use of this source code is governed by an MIT-style
  * license that can be found in the LICENSE file or at
  * https://opensource.org/licenses/MIT.
@@ -8,7 +8,7 @@ package dev.msfjarvis.claw.database.model
 
 import app.cash.sqldelight.ColumnAdapter
 
-class TagsAdapter : ColumnAdapter<List<String>, String> {
+class CSVAdapter : ColumnAdapter<List<String>, String> {
   override fun decode(databaseValue: String): List<String> {
     return databaseValue.split(SEPARATOR)
   }

database/src/main/sqldelight/dev/msfjarvis/claw/database/local/PostComments.sq

@@ -0,0 +1,17 @@
+import kotlin.String;
+import kotlin.collections.List;
+
+CREATE TABLE IF NOT EXISTS PostComments(
+  postId TEXT NOT NULL PRIMARY KEY,
+  commentIds TEXT AS List<String> NOT NULL
+);
+
+rememberComments:
+INSERT OR REPLACE
+INTO PostComments
+VALUES ?;
+
+getCommentIds:
+SELECT *
+FROM PostComments
+WHERE postId = ?;

database/src/test/kotlin/dev/msfjarvis/claw/database/local/PostCommentsQueriesTest.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright © 2023 Harsh Shandilya.
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+package dev.msfjarvis.claw.database.local
+
+import app.cash.sqldelight.adapter.primitive.IntColumnAdapter
+import app.cash.sqldelight.driver.jdbc.sqlite.JdbcSqliteDriver
+import dev.msfjarvis.claw.database.LobstersDatabase
+import dev.msfjarvis.claw.database.model.CSVAdapter
+import io.kotest.core.spec.style.FunSpec
+import io.kotest.matchers.collections.shouldHaveSize
+import io.kotest.matchers.shouldBe
+import java.util.UUID
+
+class PostCommentsQueriesTest : FunSpec() {
+  private lateinit var postQueries: PostCommentsQueries
+  init {
+    beforeEach {
+      val driver = JdbcSqliteDriver(JdbcSqliteDriver.IN_MEMORY)
+      LobstersDatabase.Schema.create(driver)
+      val database =
+        LobstersDatabase(
+          driver,
+          PostComments.Adapter(CSVAdapter()),
+          SavedPost.Adapter(IntColumnAdapter, CSVAdapter()),
+        )
+      postQueries = database.postCommentsQueries
+    }
+
+    test("get non-existent post") {
+      val ids = postQueries.getCommentIds(UUID.randomUUID().toString()).executeAsOneOrNull()
+      ids shouldBe null
+    }
+
+    test("put and get post comments") {
+      val postId = UUID.randomUUID().toString()
+      val comments = PostComments(postId, List(10) { UUID.randomUUID().toString() })
+      postQueries.rememberComments(comments)
+
+      val ids = postQueries.getCommentIds(postId).executeAsOne().commentIds
+      ids shouldHaveSize 10
+    }
+  }
+}

database/src/test/kotlin/dev/msfjarvis/claw/database/local/SavedPostQueriesTest.kt

@@ -9,7 +9,7 @@ package dev.msfjarvis.claw.database.local
 import app.cash.sqldelight.adapter.primitive.IntColumnAdapter
 import app.cash.sqldelight.driver.jdbc.sqlite.JdbcSqliteDriver
 import dev.msfjarvis.claw.database.LobstersDatabase
-import dev.msfjarvis.claw.database.model.TagsAdapter
+import dev.msfjarvis.claw.database.model.CSVAdapter
 import io.kotest.core.spec.style.FunSpec
 import io.kotest.matchers.collections.shouldBeEmpty
 import io.kotest.matchers.collections.shouldHaveSize
@@ -26,7 +26,8 @@ class SavedPostQueriesTest : FunSpec() {
       val database =
         LobstersDatabase(
           driver,
-          SavedPost.Adapter(IntColumnAdapter, TagsAdapter()),
+          PostComments.Adapter(CSVAdapter()),
+          SavedPost.Adapter(IntColumnAdapter, CSVAdapter()),
         )
       postQueries = database.savedPostQueries
     }