chore: Improve debug logs

crates/dtmm/src/engine.rs

@@ -392,15 +392,21 @@ pub(crate) async fn import_mod(state: State, info: FileInfo) -> Result<ModInfo>
 
     let mut archive = ZipArchive::new(data).wrap_err("failed to open ZIP archive")?;
 
-    for f in archive.file_names() {
+    if tracing::enabled!(tracing::Level::DEBUG) {
-        tracing::debug!("{}", f);
+        let names = archive.file_names().fold(String::new(), |mut s, name| {
+            s.push('\n');
+            s.push_str(name);
+            s
+        });
+        tracing::debug!("Archive contents:{}", names);
     }
 
     let dir_name = {
         let f = archive.by_index(0).wrap_err("archive is empty")?;
 
         if !f.is_dir() {
-            eyre::bail!("archive does not have a top-level directory");
+            let err = eyre::eyre!("archive does not have a top-level directory");
+            return Err(err).with_suggestion(|| "Use 'dtmt build' to create the mod archive.");
         }
 
         let name = f.name();
@@ -408,6 +414,8 @@ pub(crate) async fn import_mod(state: State, info: FileInfo) -> Result<ModInfo>
         name[..(name.len().saturating_sub(1))].to_string()
     };
 
+    tracing::info!("Importing mod {}", dir_name);
+
     let mod_cfg: ModConfig = {
         let mut f = archive
             .by_name(&format!("{}/{}", dir_name, "dtmt.cfg"))
@@ -421,6 +429,8 @@ pub(crate) async fn import_mod(state: State, info: FileInfo) -> Result<ModInfo>
         serde_sjson::from_str(&data).wrap_err("failed to deserialize mod config")?
     };
 
+    tracing::debug!(?mod_cfg);
+
     let files: HashMap<String, Vec<String>> = {
         let mut f = archive
             .by_name(&format!("{}/{}", dir_name, "files.sjson"))

lib/sdk/src/bundle/file.rs

@@ -544,22 +544,23 @@ impl BundleFile {
         r.skip_u32(0)?;
 
         for i in 0..header_count {
-            let span = tracing::info_span!("Read file header", i);
+            let span = tracing::debug_span!("Read file header", i);
             let _enter = span.enter();
 
             let header = BundleFileVariant::read_header(r)
                 .wrap_err_with(|| format!("failed to read header {i}"))?;
 
-            if props.contains(Properties::DATA) {
+            // TODO: Figure out how `header.unknown_1` correlates to `properties::DATA`
-                tracing::debug!("props: {props:?} | unknown_1: {}", header.unknown_1)
+            // if props.contains(Properties::DATA) {
-            }
+            //     tracing::debug!("props: {props:?} | unknown_1: {}", header.unknown_1)
+            // }
 
             headers.push(header);
         }
 
         let mut variants = Vec::with_capacity(header_count);
         for (i, header) in headers.into_iter().enumerate() {
-            let span = tracing::info_span!(
+            let span = tracing::debug_span!(
                 "Read file data {}",
                 i,
                 size = header.size,

lib/sdk/src/bundle/mod.rs

@@ -192,7 +192,7 @@ impl Bundle {
         let mut files = Vec::with_capacity(num_entries);
         tracing::trace!(num_files = num_entries);
         for (i, props) in file_props.iter().enumerate() {
-            let span = tracing::trace_span!("Read file {}", i);
+            let span = tracing::debug_span!("Read file {}", i);
             let _enter = span.enter();
 
             let file = BundleFile::from_reader(ctx, &mut r, *props)