Add Topics and TopicsFts

core/database/src/commonMain/sqldelight/com/google/samples/apps/nowinandroid/core/database/NewsResourceTopicCrossRef.sq

@@ -3,7 +3,7 @@ CREATE TABLE news_resources_topics (
     topic_id TEXT NOT NULL,
     PRIMARY KEY (news_resource_id, topic_id),
     FOREIGN KEY (news_resource_id) REFERENCES news_resources(id) ON DELETE CASCADE,
-    FOREIGN KEY (topic_id) REFERENCES TopicEntity(id) ON DELETE CASCADE
+    FOREIGN KEY (topic_id) REFERENCES topics(id) ON DELETE CASCADE
 );
 
 CREATE INDEX idx_news_resource_id ON news_resources_topics(news_resource_id);

core/database/src/commonMain/sqldelight/com/google/samples/apps/nowinandroid/core/database/Topics.sq

@@ -0,0 +1,8 @@
+CREATE TABLE topics (
+    id TEXT PRIMARY KEY NOT NULL,
+    name TEXT NOT NULL,
+    short_description TEXT NOT NULL,
+    long_description TEXT NOT NULL DEFAULT '',
+    url TEXT NOT NULL DEFAULT '',
+    image_url TEXT NOT NULL DEFAULT ''
+);

core/database/src/commonMain/sqldelight/com/google/samples/apps/nowinandroid/core/database/TopicsFts.sq

@@ -0,0 +1,27 @@
+CREATE VIRTUAL TABLE IF NOT EXISTS topics_fts
+USING FTS4(
+    topic_id TEXT,
+    name TEXT,
+    short_description TEXT,
+    long_description TEXT
+);
+
+CREATE TRIGGER IF NOT EXISTS topics_ai AFTER INSERT ON topics
+BEGIN
+    INSERT INTO topics_fts (topic_id, name, short_description, long_description)
+    VALUES (new.id, new.name, new.short_description, new.long_description);
+END;
+
+CREATE TRIGGER IF NOT EXISTS topics_ad AFTER DELETE ON topics
+BEGIN
+    DELETE FROM topics_fts WHERE topic_id = old.id;
+END;
+
+CREATE TRIGGER IF NOT EXISTS topics_au AFTER UPDATE ON topics
+BEGIN
+    UPDATE topics_fts SET
+    name = new.name,
+    short_description = new.short_description,
+    long_description = new.long_description
+    WHERE topic_id = new.id;
+END;