History filter (#329)

* Add history filters, and hotkey toggle

Switch between different search modes to narrow down the history you
want - global search for all history, host for all history from your
current machine, session for the current shell session, and directory
for the current directory

The default can be configured via `filter_mode`

* Update docs

* Add context

.github/workflows/rust.yml

@@ -63,7 +63,7 @@ jobs:
         key: ${{ runner.os }}-cargo-debug-${{ hashFiles('**/Cargo.lock') }}
 
     - name: Run cargo test
-      run: cargo test --workspace
+      run: ATUIN_SESSION=beepboopiamasession cargo test --workspace
 
   clippy:
     runs-on: ubuntu-latest

Cargo.lock

@@ -93,6 +93,7 @@ dependencies = [
  "tracing-subscriber",
  "tui",
  "unicode-width",
+ "whoami",
 ]
 
 [[package]]

Cargo.toml

@@ -57,6 +57,7 @@ crossbeam-channel = "0.5.1"
 clap = { version = "3.1.11", features = ["derive"] }
 clap_complete = "3.1.2"
 fs-err = "2.7"
+whoami = "1.1.2"
 
 
 [dependencies.tracing-subscriber]

README.md

@@ -48,6 +48,7 @@ I wanted to. And I **really** don't want to.
 - calculate statistics such as "most used command"
 - old history file is not replaced
 - quick-jump to previous items with <kbd>Alt-\<num\></kbd>
+- switch filter modes via ctrl-r; search history just from the current session, directory, or globally
 
 ## Documentation
 

atuin-client/src/database.rs

@@ -1,3 +1,4 @@
+use std::env;
 use std::path::Path;
 use std::str::FromStr;
 
@@ -16,7 +17,29 @@ use sqlx::{
 
 use super::history::History;
 use super::ordering;
-use super::settings::SearchMode;
+use super::settings::{FilterMode, SearchMode};
+
+pub struct Context {
+    session: String,
+    cwd: String,
+    hostname: String,
+}
+
+pub fn current_context() -> Context {
+    let session =
+        env::var("ATUIN_SESSION").expect("failed to find ATUIN_SESSION - check your shell setup");
+    let hostname = format!("{}:{}", whoami::hostname(), whoami::username());
+    let cwd = match env::current_dir() {
+        Ok(dir) => dir.display().to_string(),
+        Err(_) => String::from(""),
+    };
+
+    Context {
+        session,
+        hostname,
+        cwd,
+    }
+}
 
 #[async_trait]
 pub trait Database {
@@ -24,7 +47,13 @@ pub trait Database {
     async fn save_bulk(&mut self, h: &[History]) -> Result<()>;
 
     async fn load(&self, id: &str) -> Result<History>;
-    async fn list(&self, max: Option<usize>, unique: bool) -> Result<Vec<History>>;
+    async fn list(
+        &self,
+        filter: FilterMode,
+        context: &Context,
+        max: Option<usize>,
+        unique: bool,
+    ) -> Result<Vec<History>>;
     async fn range(
         &self,
         from: chrono::DateTime<Utc>,
@@ -42,6 +71,8 @@ pub trait Database {
         &self,
         limit: Option<i64>,
         search_mode: SearchMode,
+        filter: FilterMode,
+        context: &Context,
         query: &str,
     ) -> Result<Vec<History>>;
 
@@ -179,33 +210,52 @@ impl Database for Sqlite {
     }
 
     // make a unique list, that only shows the *newest* version of things
-    async fn list(&self, max: Option<usize>, unique: bool) -> Result<Vec<History>> {
+    async fn list(
+        &self,
+        filter: FilterMode,
+        context: &Context,
+        max: Option<usize>,
+        unique: bool,
+    ) -> Result<Vec<History>> {
         debug!("listing history");
 
-        // very likely vulnerable to SQL injection
+        // gotta get that query builder in soon cuz I kinda hate this
-        // however, this is client side, and only used by the client, on their
+        let query = if unique {
-        // own data. They can just open the db file...
-        // otherwise building the query is awkward
-        let query = format!(
-            "select * from history h
-                {}
-                order by timestamp desc
-                {}",
-            // inject the unique check
-            if unique {
             "where timestamp = (
                     select max(timestamp) from history
                     where h.command = history.command
                 )"
         } else {
             ""
-            },
+        }
-            // inject the limit
+        .to_string();
-            if let Some(max) = max {
+
+        let mut join = if unique { "and" } else { "where" }.to_string();
+
+        let filter_query = match filter {
+            FilterMode::Global => {
+                join = "".to_string();
+                "".to_string()
+            }
+            FilterMode::Host => format!("hostname = '{}'", context.hostname).to_string(),
+            FilterMode::Session => format!("session = '{}'", context.session).to_string(),
+            FilterMode::Directory => format!("cwd = '{}'", context.cwd).to_string(),
+        };
+
+        let filter = format!("{} {}", join, filter_query);
+
+        let limit = if let Some(max) = max {
             format!("limit {}", max)
         } else {
             "".to_string()
-            }
+        };
+
+        let query = format!(
+            "select * from history h
+                {}
+                order by timestamp desc
+                {} {}",
+            query, filter, limit,
         );
 
         let res = sqlx::query(query.as_str())
@@ -281,6 +331,8 @@ impl Database for Sqlite {
         &self,
         limit: Option<i64>,
         search_mode: SearchMode,
+        filter: FilterMode,
+        context: &Context,
         query: &str,
     ) -> Result<Vec<History>> {
         let orig_query = query;
@@ -350,6 +402,13 @@ impl Database for Sqlite {
             }
         };
 
+        let filter_sql = match filter {
+            FilterMode::Global => String::from(""),
+            FilterMode::Session => format!("and session = '{}'", context.session),
+            FilterMode::Directory => format!("and cwd = '{}'", context.cwd),
+            FilterMode::Host => format!("and hostname = '{}'", context.hostname),
+        };
+
         let res = query_params
             .iter()
             .fold(
@@ -357,10 +416,12 @@ impl Database for Sqlite {
                     format!(
                         "select * from history h
                                            where {}
+                                           {}
                                            group by command
                                            having max(timestamp)
                                            order by timestamp desc {}",
                         query_sql.as_str(),
+                        filter_sql.as_str(),
                         limit.clone()
                     )
                     .as_str(),
@@ -392,10 +453,18 @@ mod test {
     async fn assert_search_eq<'a>(
         db: &impl Database,
         mode: SearchMode,
+        filter_mode: FilterMode,
         query: &str,
         expected: usize,
     ) -> Result<Vec<History>> {
-        let results = db.search(None, mode, query).await?;
+        let context = Context {
+            hostname: "test:host".to_string(),
+            session: "beepboopiamasession".to_string(),
+            cwd: "/home/ellie".to_string(),
+        };
+
+        let results = db.search(None, mode, filter_mode, &context, query).await?;
+
         assert_eq!(
             results.len(),
             expected,
@@ -409,10 +478,11 @@ mod test {
     async fn assert_search_commands(
         db: &impl Database,
         mode: SearchMode,
+        filter_mode: FilterMode,
         query: &str,
         expected_commands: Vec<&str>,
     ) {
-        let results = assert_search_eq(db, mode, query, expected_commands.len())
+        let results = assert_search_eq(db, mode, filter_mode, query, expected_commands.len())
             .await
             .unwrap();
         let commands: Vec<&str> = results.iter().map(|a| a.command.as_str()).collect();
@@ -437,13 +507,13 @@ mod test {
         let mut db = Sqlite::new("sqlite::memory:").await.unwrap();
         new_history_item(&mut db, "ls /home/ellie").await.unwrap();
 
-        assert_search_eq(&db, SearchMode::Prefix, "ls", 1)
+        assert_search_eq(&db, SearchMode::Prefix, FilterMode::Global, "ls", 1)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Prefix, "/home", 0)
+        assert_search_eq(&db, SearchMode::Prefix, FilterMode::Global, "/home", 0)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Prefix, "ls  ", 0)
+        assert_search_eq(&db, SearchMode::Prefix, FilterMode::Global, "ls  ", 0)
             .await
             .unwrap();
     }
@@ -453,13 +523,13 @@ mod test {
         let mut db = Sqlite::new("sqlite::memory:").await.unwrap();
         new_history_item(&mut db, "ls /home/ellie").await.unwrap();
 
-        assert_search_eq(&db, SearchMode::FullText, "ls", 1)
+        assert_search_eq(&db, SearchMode::FullText, FilterMode::Global, "ls", 1)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::FullText, "/home", 1)
+        assert_search_eq(&db, SearchMode::FullText, FilterMode::Global, "/home", 1)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::FullText, "ls  ", 0)
+        assert_search_eq(&db, SearchMode::FullText, FilterMode::Global, "ls  ", 0)
             .await
             .unwrap();
     }
@@ -474,70 +544,82 @@ mod test {
             .await
             .unwrap();
 
-        assert_search_eq(&db, SearchMode::Fuzzy, "ls /", 3)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "ls /", 3)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "ls/", 2)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "ls/", 2)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "l/h/", 2)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "l/h/", 2)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "/h/e", 3)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "/h/e", 3)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "/hmoe/", 0)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "/hmoe/", 0)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "ellie/home", 0)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "ellie/home", 0)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "lsellie", 1)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "lsellie", 1)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, " ", 4)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, " ", 4)
             .await
             .unwrap();
 
         // single term operators
-        assert_search_eq(&db, SearchMode::Fuzzy, "^ls", 2)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "^ls", 2)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "'ls", 2)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "'ls", 2)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "ellie$", 2)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "ellie$", 2)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "!^ls", 2)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "!^ls", 2)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "!ellie", 1)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "!ellie", 1)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "!ellie$", 2)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "!ellie$", 2)
             .await
             .unwrap();
 
         // multiple terms
-        assert_search_eq(&db, SearchMode::Fuzzy, "ls !ellie", 1)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "ls !ellie", 1)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "^ls !e$", 1)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "^ls !e$", 1)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "home !^ls", 2)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "home !^ls", 2)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "'frank | 'rustup", 2)
+        assert_search_eq(
+            &db,
+            SearchMode::Fuzzy,
+            FilterMode::Global,
+            "'frank | 'rustup",
+            2,
+        )
         .await
         .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "'frank | 'rustup 'ls", 1)
+        assert_search_eq(
+            &db,
+            SearchMode::Fuzzy,
+            FilterMode::Global,
+            "'frank | 'rustup 'ls",
+            1,
+        )
         .await
         .unwrap();
 
         // case matching
-        assert_search_eq(&db, SearchMode::Fuzzy, "Ellie", 1)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "Ellie", 1)
             .await
             .unwrap();
     }
@@ -551,18 +633,31 @@ mod test {
         new_history_item(&mut db, "corburl").await.unwrap();
 
         // if fuzzy reordering is on, it should come back in a more sensible order
-        assert_search_commands(&db, SearchMode::Fuzzy, "curl", vec!["curl", "corburl"]).await;
+        assert_search_commands(
+            &db,
+            SearchMode::Fuzzy,
+            FilterMode::Global,
+            "curl",
+            vec!["curl", "corburl"],
+        )
+        .await;
 
-        assert_search_eq(&db, SearchMode::Fuzzy, "xxxx", 0)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "xxxx", 0)
             .await
             .unwrap();
-        assert_search_eq(&db, SearchMode::Fuzzy, "", 2)
+        assert_search_eq(&db, SearchMode::Fuzzy, FilterMode::Global, "", 2)
             .await
             .unwrap();
     }
 
     #[tokio::test(flavor = "multi_thread")]
     async fn test_search_bench_dupes() {
+        let context = Context {
+            hostname: "test:host".to_string(),
+            session: "beepboopiamasession".to_string(),
+            cwd: "/home/ellie".to_string(),
+        };
+
         let mut db = Sqlite::new("sqlite::memory:").await.unwrap();
         for _i in 1..10000 {
             new_history_item(&mut db, "i am a duplicated command")
@@ -570,7 +665,10 @@ mod test {
                 .unwrap();
         }
         let start = Instant::now();
-        let _results = db.search(None, SearchMode::Fuzzy, "").await.unwrap();
+        let _results = db
+            .search(None, SearchMode::Fuzzy, FilterMode::Global, &context, "")
+            .await
+            .unwrap();
         let duration = start.elapsed();
 
         assert!(duration < Duration::from_secs(15));

atuin-client/src/settings.rs

@@ -23,6 +23,21 @@ pub enum SearchMode {
     Fuzzy,
 }
 
+#[derive(Clone, Debug, Deserialize, Copy)]
+pub enum FilterMode {
+    #[serde(rename = "global")]
+    Global,
+
+    #[serde(rename = "host")]
+    Host,
+
+    #[serde(rename = "session")]
+    Session,
+
+    #[serde(rename = "directory")]
+    Directory,
+}
+
 // FIXME: Can use upstream Dialect enum if https://github.com/stevedonovan/chrono-english/pull/16 is merged
 #[derive(Clone, Debug, Deserialize, Copy)]
 pub enum Dialect {
@@ -65,6 +80,7 @@ pub struct Settings {
     pub key_path: String,
     pub session_path: String,
     pub search_mode: SearchMode,
+    pub filter_mode: FilterMode,
     // This is automatically loaded when settings is created. Do not set in
     // config! Keep secrets and settings apart.
     pub session_token: String,
@@ -147,6 +163,7 @@ impl Settings {
             .set_default("sync_frequency", "1h")?
             .set_default("sync_address", "https://api.atuin.sh")?
             .set_default("search_mode", "prefix")?
+            .set_default("filter_mode", "global")?
             .set_default("session_token", "")?
             .set_default("style", "auto")?
             .add_source(

docs/config.md

@@ -102,6 +102,20 @@ the search syntax [described below](#fuzzy-search-syntax).
 
 Defaults to "prefix"
 
+### `filter_mode`
+
+The default filter to use when searching
+
+| Column1   | Column2	|
+|--------------- | --------------- |
+| global (default)   | Search history from all hosts, all sessions, all directories  |
+| host   | Search history just from this host   |
+| session   | Search history just from the current session   |
+| directory | Search history just from the current directory|
+
+Filter modes can still be toggled via ctrl-r
+
+
 ```
 search_mode = "fulltext"
 ```

src/command/client/history.rs

@@ -6,7 +6,7 @@ use clap::Subcommand;
 use eyre::Result;
 use tabwriter::TabWriter;
 
-use atuin_client::database::Database;
+use atuin_client::database::{current_context, Database};
 use atuin_client::history::History;
 use atuin_client::settings::Settings;
 use atuin_client::sync;
@@ -97,6 +97,8 @@ impl Cmd {
         settings: &Settings,
         db: &mut (impl Database + Send + Sync),
     ) -> Result<()> {
+        let context = current_context();
+
         match self {
             Self::Start { command: words } => {
                 let command = words.join(" ");
@@ -168,7 +170,7 @@ impl Cmd {
                 };
 
                 let history = match (session, cwd) {
-                    (None, None) => db.list(None, false).await?,
+                    (None, None) => db.list(settings.filter_mode, &context, None, false).await?,
                     (None, Some(cwd)) => {
                         let query = format!("select * from history where cwd = '{}';", cwd);
                         db.query_history(&query).await?

src/command/client/search.rs

@@ -1,6 +1,7 @@
 use chrono::Utc;
 use clap::Parser;
 use eyre::Result;
+use std::env;
 use std::{io::stdout, ops::Sub, time::Duration};
 use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
 use tui::{
@@ -14,9 +15,11 @@ use tui::{
 use unicode_width::UnicodeWidthStr;
 
 use atuin_client::{
+    database::current_context,
+    database::Context,
     database::Database,
     history::History,
-    settings::{SearchMode, Settings},
+    settings::{FilterMode, SearchMode, Settings},
 };
 
 use super::event::{Event, Events};
@@ -91,9 +94,13 @@ impl Cmd {
 struct State {
     input: String,
 
+    filter_mode: FilterMode,
+
     results: Vec<History>,
 
     results_state: ListState,
+
+    context: Context,
 }
 
 impl State {
@@ -233,8 +240,14 @@ async fn query_results(
     db: &mut (impl Database + Send + Sync),
 ) -> Result<()> {
     let results = match app.input.as_str() {
-        "" => db.list(Some(200), true).await?,
+        "" => {
-        i => db.search(Some(200), search_mode, i).await?,
+            db.list(app.filter_mode, &app.context, Some(200), true)
+                .await?
+        }
+        i => {
+            db.search(Some(200), search_mode, app.filter_mode, &app.context, i)
+                .await?
+        }
     };
 
     app.results = results;
@@ -300,6 +313,16 @@ async fn key_handler(
             app.input = String::from("");
             query_results(app, search_mode, db).await.unwrap();
         }
+        Key::Ctrl('r') => {
+            app.filter_mode = match app.filter_mode {
+                FilterMode::Global => FilterMode::Host,
+                FilterMode::Host => FilterMode::Session,
+                FilterMode::Session => FilterMode::Directory,
+                FilterMode::Directory => FilterMode::Global,
+            };
+
+            query_results(app, search_mode, db).await.unwrap();
+        }
         Key::Down | Key::Ctrl('n') => {
             let i = match app.results_state.selected() {
                 Some(i) => {
@@ -376,8 +399,15 @@ fn draw<T: Backend>(f: &mut Frame<'_, T>, history_count: i64, app: &mut State) {
     let help = Text::from(Spans::from(help));
     let help = Paragraph::new(help);
 
+    let filter_mode = match app.filter_mode {
+        FilterMode::Global => "GLOBAL",
+        FilterMode::Host => "HOST",
+        FilterMode::Session => "SESSION",
+        FilterMode::Directory => "DIRECTORY",
+    };
+
     let input = Paragraph::new(app.input.clone())
-        .block(Block::default().borders(Borders::ALL).title("Query"));
+        .block(Block::default().borders(Borders::ALL).title(filter_mode));
 
     let stats = Paragraph::new(Text::from(Span::raw(format!(
         "history count: {}",
@@ -451,7 +481,15 @@ fn draw_compact<T: Backend>(f: &mut Frame<'_, T>, history_count: i64, app: &mut
     .style(Style::default().fg(Color::DarkGray))
     .alignment(Alignment::Right);
 
-    let input = Paragraph::new(format!("] {}", app.input.clone())).block(Block::default());
+    let filter_mode = match app.filter_mode {
+        FilterMode::Global => "GLOBAL",
+        FilterMode::Host => "HOST",
+        FilterMode::Session => "SESSION",
+        FilterMode::Directory => "DIRECTORY",
+    };
+
+    let input =
+        Paragraph::new(format!("{}] {}", filter_mode, app.input.clone())).block(Block::default());
 
     f.render_widget(title, header_chunks[0]);
     f.render_widget(help, header_chunks[1]);
@@ -460,9 +498,11 @@ fn draw_compact<T: Backend>(f: &mut Frame<'_, T>, history_count: i64, app: &mut
     app.render_results(f, chunks[1], Block::default());
     f.render_widget(input, chunks[2]);
 
+    let extra_width = app.input.width() + filter_mode.len();
+
     f.set_cursor(
         // Put cursor past the end of the input text
-        chunks[2].x + app.input.width() as u16 + 2,
+        chunks[2].x + extra_width as u16 + 2,
         // Move one line down, from the border to the input line
         chunks[2].y + 1,
     );
@@ -475,6 +515,7 @@ fn draw_compact<T: Backend>(f: &mut Frame<'_, T>, history_count: i64, app: &mut
 async fn select_history(
     query: &[String],
     search_mode: SearchMode,
+    filter_mode: FilterMode,
     style: atuin_client::settings::Style,
     db: &mut (impl Database + Send + Sync),
 ) -> Result<String> {
@@ -491,6 +532,8 @@ async fn select_history(
         input: query.join(" "),
         results: Vec::new(),
         results_state: ListState::default(),
+        context: current_context(),
+        filter_mode,
     };
 
     query_results(&mut app, search_mode, db).await?;
@@ -551,11 +594,26 @@ pub async fn run(
     };
 
     if interactive {
-        let item = select_history(query, settings.search_mode, settings.style, db).await?;
+        let item = select_history(
+            query,
+            settings.search_mode,
+            settings.filter_mode,
+            settings.style,
+            db,
+        )
+        .await?;
         eprintln!("{}", item);
     } else {
+        let context = current_context();
+
         let results = db
-            .search(None, settings.search_mode, query.join(" ").as_str())
+            .search(
+                None,
+                settings.search_mode,
+                settings.filter_mode,
+                &context,
+                query.join(" ").as_str(),
+            )
             .await?;
 
         // TODO: This filtering would be better done in the SQL query, I just

src/command/client/stats.rs

@@ -8,9 +8,9 @@ use clap::Parser;
 use cli_table::{format::Justify, print_stdout, Cell, Style, Table};
 use eyre::{bail, Result};
 
-use atuin_client::database::Database;
+use atuin_client::database::{current_context, Database};
 use atuin_client::history::History;
-use atuin_client::settings::Settings;
+use atuin_client::settings::{FilterMode, Settings};
 
 #[derive(Parser)]
 #[clap(infer_subcommands = true)]
@@ -71,6 +71,8 @@ impl Cmd {
         db: &mut (impl Database + Send + Sync),
         settings: &Settings,
     ) -> Result<()> {
+        let context = current_context();
+
         match self {
             Self::Day { words } => {
                 let words = if words.is_empty() {
@@ -90,7 +92,7 @@ impl Cmd {
             }
 
             Self::All => {
-                let history = db.list(None, false).await?;
+                let history = db.list(FilterMode::Global, &context, None, false).await?;
 
                 compute_stats(&history)?;