fix: more time fixes

Author: Frando

src/provider.rs

@@ -3,18 +3,13 @@
 //! Note that while using this API directly is fine, the standard way
 //! to provide data is to just register a [`crate::BlobsProtocol`] protocol
 //! handler with an [`iroh::Endpoint`](iroh::protocol::Router).
-use std::{
-    fmt::Debug,
-    future::Future,
-    io,
-    time::{Duration, Instant},
-};
+use std::{fmt::Debug, future::Future, io, time::Duration};
 
 use anyhow::Result;
 use bao_tree::ChunkRanges;
 use iroh::endpoint::{self, ConnectionError, VarInt};
 use iroh_io::{AsyncStreamReader, AsyncStreamWriter};
-use n0_future::StreamExt;
+use n0_future::{time::Instant, StreamExt};
 use serde::{Deserialize, Serialize};
 use snafu::Snafu;
 use tokio::select;

src/store/mem.rs

@@ -14,7 +14,6 @@ use std::{
     num::NonZeroU64,
     ops::Deref,
     sync::Arc,
-    time::SystemTime,
 };
 
 use bao_tree::{
@@ -29,12 +28,13 @@ use bao_tree::{
 };
 use bytes::Bytes;
 use irpc::channel::mpsc;
-use n0_future::future::yield_now;
-use range_collections::range_set::RangeSetRange;
-use tokio::{
-    sync::watch,
+use n0_future::{
+    future::yield_now,
     task::{JoinError, JoinSet},
+    time::SystemTime,
 };
+use range_collections::range_set::RangeSetRange;
+use tokio::sync::watch;
 use tracing::{error, info, instrument, trace, Instrument};
 
 use super::util::{BaoTreeSender, PartialMemStorage};

src/store/util.rs

@@ -1,8 +1,9 @@
-use std::{borrow::Borrow, fmt, time::SystemTime};
+use std::{borrow::Borrow, fmt};
 
 use bao_tree::io::mixed::EncodedItem;
 use bytes::Bytes;
 use derive_more::{From, Into};
+use n0_future::time::SystemTime;
 
 mod sparse_mem_file;
 use irpc::channel::mpsc;
@@ -68,6 +69,13 @@ impl fmt::Display for Tag {
 impl Tag {
     /// Create a new tag that does not exist yet.
     pub fn auto(time: SystemTime, exists: impl Fn(&[u8]) -> bool) -> Self {
+        // On wasm, SystemTime is web_time::SystemTime, but we need a std system time
+        // to convert to chrono.
+        // TODO: Upstream to n0-future or expose SystemTimeExt on wasm
+        #[cfg(wasm_browser)]
+        let time = std::time::SystemTime::UNIX_EPOCH
+            + time.duration_since(SystemTime::UNIX_EPOCH).unwrap();
+
         let now = chrono::DateTime::<chrono::Utc>::from(time);
         let mut i = 0;
         loop {