2 files changed, 60 insertions, 1 deletions

diff --git a/database/src/kv/index_key.rs b/database/src/kv/index_key.rs
index eab46c4..fae7d4a 100644
--- a/database/src/kv/index_key.rs
+++ b/database/src/kv/index_key.rs
@@ -1,3 +1,5 @@
+use std::fmt::Display;
+
 /*
     This file is part of jellything (https://codeberg.org/metamuffin/jellything)
     which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
@@ -128,6 +130,52 @@ impl SortKey {
     }
 }
 
+impl Display for IndexKey {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{} | {}", self.0, self.1)
+    }
+}
+impl Display for Binning {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        for (i, b) in self.0.iter().enumerate() {
+            if i > 0 {
+                write!(f, " ")?;
+            }
+            write!(f, "{b}")?;
+        }
+        Ok(())
+    }
+}
+impl Display for BinningComponent {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            BinningComponent::Has(path) => write!(f, "H({path})"),
+            BinningComponent::Match(path) => write!(f, "M({path})"),
+        }
+    }
+}
+impl Display for SortKey {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            SortKey::None => write!(f, "none"),
+            SortKey::Count => write!(f, "count"),
+            SortKey::Value(path, multi) => write!(f, "value({path}, {multi})"),
+            SortKey::Text(path) => write!(f, "text({path})"),
+        }
+    }
+}
+impl Display for MultiBehaviour {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str(match self {
+            MultiBehaviour::First => "first",
+            MultiBehaviour::ForEach => "for_each",
+            MultiBehaviour::Max => "max",
+            MultiBehaviour::Min => "min",
+            MultiBehaviour::Count => "count",
+        })
+    }
+}
+
 fn write_path(path: &Path, out: &mut Vec<u8>) {
     assert!(path.0.len() < 256);
     out.push(path.0.len() as u8);
diff --git a/database/src/kv/mod.rs b/database/src/kv/mod.rs
index f90f07e..257eec4 100644
--- a/database/src/kv/mod.rs
+++ b/database/src/kv/mod.rs
@@ -27,7 +27,7 @@ use crate::{
 use anyhow::{Result, anyhow};
 use jellyobject::ObjectBuffer;
 use log::{debug, info};
-use std::borrow::Cow;
+use std::{borrow::Cow, fmt::Write};
 
 pub type SubtreeNum = u32;
 
@@ -132,6 +132,17 @@ impl Transaction for &mut dyn jellykv::Transaction {
         }
         Ok(total)
     }
+
+    fn debug_info(&self) -> Result<String> {
+        let mut o = String::new();
+        let rc = read_counter(*self, &T_ROW_COUNTER.to_be_bytes(), 0)?;
+        writeln!(o, "Row Counter: {rc}")?;
+        writeln!(o, "Indices:")?;
+        for (is, ik) in list_indices(*self)? {
+            writeln!(o, "\tIS={is} IK={ik}")?;
+        }
+        Ok(o)
+    }
 }
 
 fn get_or_create_index(txn: &mut dyn jellykv::Transaction, ik: &IndexKey) -> Result<SubtreeNum> {