From 2741f38e49be90e984ce64ba76a99ae9a68149c7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BC=8A=E6=AC=A7?= <langyo.china@gmail.com>
Date: Fri, 5 Jul 2024 03:57:40 +0800
Subject: [PATCH 1/2] fix: Add a binding to meta object for `D1Result`.

---
 worker/src/d1/mod.rs | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/worker/src/d1/mod.rs b/worker/src/d1/mod.rs
index 7f2389c6..bc213cde 100644
--- a/worker/src/d1/mod.rs
+++ b/worker/src/d1/mod.rs
@@ -343,6 +343,18 @@ impl From<D1PreparedStatementSys> for D1PreparedStatement {
 // The result of a D1 query execution.
 pub struct D1Result(D1ResultSys);
 
+// The meta object of D1 result.
+#[derive(Debug, Clone, Deserialize)]
+pub struct D1ResultMeta {
+    pub changed_db: Option<bool>,
+    pub changes: Option<usize>,
+    pub duration: Option<f64>,
+    pub last_row_id: Option<i64>,
+    pub rows_read: Option<usize>,
+    pub rows_written: Option<usize>,
+    pub size_after: Option<usize>,
+}
+
 impl D1Result {
     /// Returns `true` if the result indicates a success, otherwise `false`.
     pub fn success(&self) -> bool {
@@ -372,6 +384,18 @@ impl D1Result {
             Ok(Vec::new())
         }
     }
+
+    /// Return the meta data in this result.
+    ///
+    /// Returns `None` if it's not exists.
+    pub fn meta(&self) -> Result<Option<D1ResultMeta>> {
+        if let Ok(meta) = self.0.meta() {
+            let meta: D1ResultMeta = serde_wasm_bindgen::from_value(meta.into()).unwrap();
+            Ok(Some(meta))
+        } else {
+            Ok(None)
+        }
+    }
 }
 
 #[derive(Clone)]

From 2340d4e1790a27407e0cbe4d3ba1e88fb439f18b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BC=8A=E6=AC=A7?= <langyo.china@gmail.com>
Date: Fri, 5 Jul 2024 04:44:47 +0800
Subject: [PATCH 2/2] Fix typo.

---
 worker/src/d1/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/worker/src/d1/mod.rs b/worker/src/d1/mod.rs
index bc213cde..bb62b133 100644
--- a/worker/src/d1/mod.rs
+++ b/worker/src/d1/mod.rs
@@ -387,10 +387,10 @@ impl D1Result {
 
     /// Return the meta data in this result.
     ///
-    /// Returns `None` if it's not exists.
+    /// Returns `None` if `meta` field is not populated.
     pub fn meta(&self) -> Result<Option<D1ResultMeta>> {
         if let Ok(meta) = self.0.meta() {
-            let meta: D1ResultMeta = serde_wasm_bindgen::from_value(meta.into()).unwrap();
+            let meta: D1ResultMeta = serde_wasm_bindgen::from_value(meta.into())?;
             Ok(Some(meta))
         } else {
             Ok(None)