backend/migrations/20250505012740_v0.1.1.sql

@@ -0,0 +1,51 @@
+-- Add migration script here
+
+CREATE TABLE "post" (
+    "id" SERIAL PRIMARY KEY NOT NULL,
+    "title" TEXT NOT NULL,
+    "description" TEXT NOT NULL,
+    "preview_image_url" TEXT NOT NULL,
+    "content" TEXT NOT NULL,
+    "published_time" TIMESTAMP,
+    "deleted_time" TIMESTAMP,
+    "created_time" TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_time" TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE "label" (
+    "id" SERIAL PRIMARY KEY NOT NULL,
+    "name" TEXT NOT NULL,
+    "color" BIGINT NOT NULL CHECK ("color" >= 0 AND "color" <= 4294967295),
+    "deleted_time" TIMESTAMP,
+    "created_time" TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_time" TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE "post_label" (
+    "post_id" INTEGER NOT NULL,
+    "label_id" INTEGER NOT NULL,
+    PRIMARY KEY ("post_id", "label_id"),
+    FOREIGN KEY ("post_id") REFERENCES "post" ("id") ON DELETE CASCADE,
+    FOREIGN KEY ("label_id") REFERENCES "label" ("id") ON DELETE CASCADE
+);
+
+
+-- Auto update `updated_time` trigger
+
+CREATE FUNCTION update_updated_time_column() RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_time = CURRENT_TIMESTAMP;
+    return NEW;
+END;
+$$ LANGUAGE 'plpgsql';
+
+CREATE TRIGGER "update_post_updated_time"
+BEFORE UPDATE ON "post"
+FOR EACH ROW
+EXECUTE FUNCTION update_updated_time_column();
+
+CREATE TRIGGER "update_label_updated_time"
+BEFORE UPDATE ON "label"
+FOR EACH ROW
+EXECUTE FUNCTION update_updated_time_column();
+