feat: server can actually create root and sections

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/hyperlog-server/src/services/create_section.rs

@@ -0,0 +1,62 @@
+use hyperlog_core::log::GraphItem;
+
+use crate::state::SharedState;
+
+#[derive(Clone)]
+pub struct CreateSection {
+    db: sqlx::PgPool,
+}
+
+pub struct Request {
+    pub root: String,
+    pub path: Vec<String>,
+}
+pub struct Response {}
+
+#[derive(sqlx::FromRow)]
+struct Root {
+    id: uuid::Uuid,
+    root_name: String,
+}
+
+impl CreateSection {
+    pub fn new(db: sqlx::PgPool) -> Self {
+        Self { db }
+    }
+
+    pub async fn execute(&self, req: Request) -> anyhow::Result<Response> {
+        let Root { id: root_id, .. } =
+            sqlx::query_as(r#"SELECT * FROM roots WHERE root_name = $1"#)
+                .bind(req.root)
+                .fetch_one(&self.db)
+                .await?;
+
+        let node_id = uuid::Uuid::new_v4();
+        sqlx::query(
+            r#"
+    INSERT INTO nodes 
+         (id, root_id, path, item_type, item_content) 
+     VALUES 
+         ($1, $2, $3, $4, $5)"#,
+        )
+        .bind(node_id)
+        .bind(root_id)
+        .bind(req.path.join("."))
+        .bind("SECTION".to_string())
+        .bind(None::<serde_json::Value>)
+        .execute(&self.db)
+        .await?;
+
+        Ok(Response {})
+    }
+}
+
+pub trait CreateSectionExt {
+    fn create_section_service(&self) -> CreateSection;
+}
+
+impl CreateSectionExt for SharedState {
+    fn create_section_service(&self) -> CreateSection {
+        CreateSection::new(self.db.clone())
+    }
+}