From 3543e83b91d9be0739f6808857fcfeaf289b01a8 Mon Sep 17 00:00:00 2001
From: Avinash Sajjanshetty <avi@turso.tech>
Date: Sun, 6 Apr 2025 23:09:00 +0530
Subject: [PATCH] Impl Clock trait in bindings

---
 bindings/javascript/src/lib.rs | 11 +++++++----
 bindings/wasm/lib.rs           | 24 ++++++++++++++++++------
 simulator/runner/io.rs         | 15 ++++++++++-----
 3 files changed, 35 insertions(+), 15 deletions(-)

diff --git a/bindings/javascript/src/lib.rs b/bindings/javascript/src/lib.rs
index 614b17677..a9c0d72a5 100644
--- a/bindings/javascript/src/lib.rs
+++ b/bindings/javascript/src/lib.rs
@@ -4,6 +4,7 @@ use std::cell::RefCell;
 use std::rc::Rc;
 use std::sync::Arc;
 
+use limbo_core::{Clock, Instant};
 use napi::{Env, JsUnknown, Result as NapiResult};
 use napi_derive::napi;
 
@@ -152,6 +153,12 @@ impl limbo_core::DatabaseStorage for DatabaseFile {
 
 struct IO {}
 
+impl Clock for IO {
+    fn now(&self) -> Instant {
+        todo!()
+    }
+}
+
 impl limbo_core::IO for IO {
     fn open_file(
         &self,
@@ -169,8 +176,4 @@ impl limbo_core::IO for IO {
     fn generate_random_number(&self) -> i64 {
         todo!();
     }
-
-    fn get_current_time(&self) -> String {
-        todo!();
-    }
 }
diff --git a/bindings/wasm/lib.rs b/bindings/wasm/lib.rs
index 3a5819efc..91680dc96 100644
--- a/bindings/wasm/lib.rs
+++ b/bindings/wasm/lib.rs
@@ -1,5 +1,7 @@
 use js_sys::{Array, Object};
-use limbo_core::{maybe_init_database_file, OpenFlags, Pager, Result, WalFileShared};
+use limbo_core::{
+    maybe_init_database_file, Clock, Instant, OpenFlags, Pager, Result, WalFileShared,
+};
 use std::cell::RefCell;
 use std::rc::Rc;
 use std::sync::Arc;
@@ -269,6 +271,18 @@ pub struct PlatformIO {
 unsafe impl Send for PlatformIO {}
 unsafe impl Sync for PlatformIO {}
 
+impl Clock for PlatformIO {
+    fn now(&self) -> Instant {
+        let date = Date::new();
+        let ms_since_epoch = date.getTime();
+
+        Instant {
+            secs: (ms_since_epoch / 1000.0) as i64,
+            micros: ((ms_since_epoch % 1000.0) * 1000.0) as u32,
+        }
+    }
+}
+
 impl limbo_core::IO for PlatformIO {
     fn open_file(
         &self,
@@ -291,11 +305,6 @@ impl limbo_core::IO for PlatformIO {
         let random_f64 = Math_random();
         (random_f64 * i64::MAX as f64) as i64
     }
-
-    fn get_current_time(&self) -> String {
-        let date = Date::new();
-        date.toISOString()
-    }
 }
 
 #[wasm_bindgen]
@@ -312,6 +321,9 @@ extern "C" {
 
     #[wasm_bindgen(method, getter)]
     fn toISOString(this: &Date) -> String;
+
+    #[wasm_bindgen(method)]
+    fn getTime(this: &Date) -> f64;
 }
 
 pub struct DatabaseFile {
diff --git a/simulator/runner/io.rs b/simulator/runner/io.rs
index 48340d170..d1c280b4e 100644
--- a/simulator/runner/io.rs
+++ b/simulator/runner/io.rs
@@ -1,6 +1,6 @@
 use std::{cell::RefCell, sync::Arc};
 
-use limbo_core::{OpenFlags, PlatformIO, Result, IO};
+use limbo_core::{Clock, Instant, OpenFlags, PlatformIO, Result, IO};
 use rand::{RngCore, SeedableRng};
 use rand_chacha::ChaCha8Rng;
 
@@ -52,6 +52,15 @@ impl SimulatorIO {
     }
 }
 
+impl Clock for SimulatorIO {
+    fn now(&self) -> Instant {
+        Instant {
+            secs: 1704067200, // 2024-01-01 00:00:00 UTC
+            micros: 0,
+        }
+    }
+}
+
 impl IO for SimulatorIO {
     fn open_file(
         &self,
@@ -88,8 +97,4 @@ impl IO for SimulatorIO {
     fn generate_random_number(&self) -> i64 {
         self.rng.borrow_mut().next_u64() as i64
     }
-
-    fn get_current_time(&self) -> String {
-        "2024-01-01 00:00:00".to_string()
-    }
 }