From 577fa2d29b87565bbecdd8c1d5fadccac79c404a Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Sat, 21 May 2022 16:35:06 +0100
Subject: [PATCH] Update `time` procedures for js targets

---
 core/time/time_js.odin    | 25 +++++++++++++++++--------
 vendor/wasm/js/runtime.js | 10 ++++++++++
 2 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/core/time/time_js.odin b/core/time/time_js.odin
index 9a7163f38..226f921f9 100644
--- a/core/time/time_js.odin
+++ b/core/time/time_js.odin
@@ -2,22 +2,31 @@
 //+build js
 package time
 
-_IS_SUPPORTED :: false
+foreign import "odin_env"
+
+_IS_SUPPORTED :: true
 
 _now :: proc "contextless" () -> Time {
-	return {}
+	foreign odin_env {
+		time_now :: proc "contextless" () -> i64 ---
+	}
+	return Time{time_now()}
 }
 
 _sleep :: proc "contextless" (d: Duration) {
+	foreign odin_env {
+		time_sleep :: proc "contextless" (ms: u32) ---
+	}
+	if d > 0 {
+		time_sleep(u32(d/1e6))
+	}
 }
 
 _tick_now :: proc "contextless" () -> Tick {
-	// mul_div_u64 :: proc "contextless" (val, num, den: i64) -> i64 {
-	// 	q := val / den
-	// 	r := val % den
-	// 	return q * num + r * num / den
-	// }
-	return {}
+	foreign odin_env {
+		tick_now :: proc "contextless" () -> i64 ---
+	}
+	return Tick{tick_now()}
 }
 
 _yield :: proc "contextless" () {
diff --git a/vendor/wasm/js/runtime.js b/vendor/wasm/js/runtime.js
index 6cec2d0c0..f24c85bcd 100644
--- a/vendor/wasm/js/runtime.js
+++ b/vendor/wasm/js/runtime.js
@@ -1280,8 +1280,18 @@ function odinSetupDefaultImports(wasmMemoryInterface, consoleElement) {
 			evaluate: (str_ptr, str_len) => { eval.call(null, wasmMemoryInterface.loadString(str_ptr, str_len)); },
 
 			time_now: () => {
+				// convert ms to ns
+				return Date.now() * 1e6;
+			},
+			time_tick_now: () => {
+				// convert ms to ns
 				return performance.now() * 1e6;
 			},
+			time_sleep: (duration_ms) => {
+				if (duration_ms > 0) {
+					// TODO(bill): Does this even make any sense?
+				}
+			},
 
 			sqrt:    (x) => Math.sqrt(x),
 			sin:     (x) => Math.sin(x),