lean_ctx/tools/
mod.rs

1use std::path::Path;
2use std::sync::atomic::{AtomicUsize, Ordering};
3use std::sync::Arc;
4use std::time::Instant;
5use tokio::sync::RwLock;
6
7use crate::core::cache::SessionCache;
8use crate::core::session::SessionState;
9
10pub mod autonomy;
11pub mod ctx_agent;
12pub mod ctx_analyze;
13pub mod ctx_architecture;
14pub mod ctx_artifacts;
15pub mod ctx_benchmark;
16pub mod ctx_callees;
17pub mod ctx_callers;
18pub mod ctx_callgraph;
19pub mod ctx_compile;
20pub mod ctx_compress;
21pub mod ctx_compress_memory;
22pub mod ctx_context;
23pub mod ctx_control;
24pub mod ctx_cost;
25pub mod ctx_dedup;
26pub mod ctx_delta;
27pub mod ctx_discover;
28pub mod ctx_edit;
29pub mod ctx_execute;
30pub mod ctx_expand;
31pub mod ctx_feedback;
32pub mod ctx_fill;
33pub mod ctx_gain;
34pub mod ctx_graph;
35pub mod ctx_graph_diagram;
36pub mod ctx_handoff;
37pub mod ctx_heatmap;
38pub mod ctx_impact;
39pub mod ctx_index;
40pub mod ctx_intent;
41pub mod ctx_knowledge;
42pub mod ctx_knowledge_relations;
43pub mod ctx_metrics;
44pub mod ctx_multi_read;
45pub mod ctx_outline;
46pub mod ctx_overview;
47pub mod ctx_pack;
48pub mod ctx_plan;
49pub mod ctx_prefetch;
50pub mod ctx_preload;
51pub mod ctx_proof;
52pub mod ctx_provider;
53pub mod ctx_read;
54pub mod ctx_response;
55pub mod ctx_review;
56pub mod ctx_routes;
57pub mod ctx_search;
58pub mod ctx_semantic_search;
59pub mod ctx_session;
60pub mod ctx_share;
61pub mod ctx_shell;
62pub mod ctx_smart_read;
63pub mod ctx_symbol;
64pub mod ctx_task;
65pub mod ctx_tree;
66pub mod ctx_verify;
67pub mod ctx_workflow;
68pub mod ctx_wrapped;
69pub mod registered;
70
71const DEFAULT_CACHE_TTL_SECS: u64 = 300;
72
73struct CepComputedStats {
74    cep_score: u32,
75    cache_util: u32,
76    mode_diversity: u32,
77    compression_rate: u32,
78    total_original: u64,
79    total_compressed: u64,
80    total_saved: u64,
81    mode_counts: std::collections::HashMap<String, u64>,
82    complexity: String,
83    cache_hits: u64,
84    total_reads: u64,
85    tool_call_count: u64,
86}
87
88/// Context Reduction Protocol mode controlling output verbosity.
89#[derive(Clone, Copy, Debug, PartialEq, Eq)]
90pub enum CrpMode {
91    Off,
92    Compact,
93    Tdd,
94}
95
96impl CrpMode {
97    /// Reads the CRP mode from the `LEAN_CTX_CRP_MODE` environment variable.
98    pub fn from_env() -> Self {
99        match std::env::var("LEAN_CTX_CRP_MODE")
100            .unwrap_or_default()
101            .to_lowercase()
102            .as_str()
103        {
104            "off" => Self::Off,
105            "compact" => Self::Compact,
106            _ => Self::Tdd,
107        }
108    }
109
110    pub fn parse(s: &str) -> Option<Self> {
111        match s.trim().to_lowercase().as_str() {
112            "off" => Some(Self::Off),
113            "compact" => Some(Self::Compact),
114            "tdd" => Some(Self::Tdd),
115            _ => None,
116        }
117    }
118
119    /// Effective CRP mode: explicit env var wins; otherwise use active profile.
120    pub fn effective() -> Self {
121        if let Ok(v) = std::env::var("LEAN_CTX_CRP_MODE") {
122            if !v.trim().is_empty() {
123                return Self::parse(&v).unwrap_or(Self::Tdd);
124            }
125        }
126        let p = crate::core::profiles::active_profile();
127        Self::parse(p.compression.crp_mode_effective()).unwrap_or(Self::Tdd)
128    }
129
130    /// Returns true if the mode is TDD (maximum compression).
131    pub fn is_tdd(&self) -> bool {
132        *self == Self::Tdd
133    }
134}
135
136/// Thread-safe handle to the shared file content cache.
137pub type SharedCache = Arc<RwLock<SessionCache>>;
138
139#[derive(Clone, Copy, Debug, PartialEq, Eq)]
140pub enum SessionMode {
141    /// Traditional single-client session persistence under `~/.lean-ctx/sessions/`.
142    Personal,
143    /// Context OS mode: shared sessions + event bus for multi-client HTTP/team-server.
144    Shared,
145}
146
147/// Central MCP server state: cache, session, metrics, and autonomy runtime.
148#[derive(Clone)]
149pub struct LeanCtxServer {
150    pub cache: SharedCache,
151    pub session: Arc<RwLock<SessionState>>,
152    pub tool_calls: Arc<RwLock<Vec<ToolCallRecord>>>,
153    pub call_count: Arc<AtomicUsize>,
154    pub cache_ttl_secs: u64,
155    pub last_call: Arc<RwLock<Instant>>,
156    pub agent_id: Arc<RwLock<Option<String>>>,
157    pub client_name: Arc<RwLock<String>>,
158    pub autonomy: Arc<autonomy::AutonomyState>,
159    pub loop_detector: Arc<RwLock<crate::core::loop_detection::LoopDetector>>,
160    pub workflow: Arc<RwLock<Option<crate::core::workflow::WorkflowRun>>>,
161    pub ledger: Arc<RwLock<crate::core::context_ledger::ContextLedger>>,
162    pub pipeline_stats: Arc<RwLock<crate::core::pipeline::PipelineStats>>,
163    pub session_mode: SessionMode,
164    pub workspace_id: String,
165    pub channel_id: String,
166    pub context_os: Option<Arc<crate::core::context_os::ContextOsRuntime>>,
167    pub context_ir: Option<Arc<RwLock<crate::core::context_ir::ContextIrV1>>>,
168    pub registry: Option<Arc<crate::server::registry::ToolRegistry>>,
169    pub(crate) rules_stale_checked: Arc<std::sync::atomic::AtomicBool>,
170    pub(crate) last_seen_event_id: Arc<std::sync::atomic::AtomicI64>,
171    startup_project_root: Option<String>,
172    startup_shell_cwd: Option<String>,
173}
174
175/// Recorded metrics for a single MCP tool invocation.
176#[derive(Clone, Debug)]
177pub struct ToolCallRecord {
178    pub tool: String,
179    pub original_tokens: usize,
180    pub saved_tokens: usize,
181    pub mode: Option<String>,
182    pub duration_ms: u64,
183    pub timestamp: String,
184}
185
186impl Default for LeanCtxServer {
187    fn default() -> Self {
188        Self::new()
189    }
190}
191
192impl LeanCtxServer {
193    /// Creates a new server with default settings, auto-detecting the project root.
194    pub fn new() -> Self {
195        Self::new_with_project_root(None)
196    }
197
198    /// Creates a new server rooted at the given project directory.
199    pub fn new_with_project_root(project_root: Option<&str>) -> Self {
200        Self::new_with_startup(
201            project_root,
202            std::env::current_dir().ok().as_deref(),
203            SessionMode::Personal,
204            "default",
205            "default",
206        )
207    }
208
209    /// Creates a new server in Context OS shared mode for a specific workspace/channel.
210    pub fn new_shared_with_context(
211        project_root: &str,
212        workspace_id: &str,
213        channel_id: &str,
214    ) -> Self {
215        Self::new_with_startup(
216            Some(project_root),
217            std::env::current_dir().ok().as_deref(),
218            SessionMode::Shared,
219            workspace_id,
220            channel_id,
221        )
222    }
223
224    fn new_with_startup(
225        project_root: Option<&str>,
226        startup_cwd: Option<&Path>,
227        session_mode: SessionMode,
228        workspace_id: &str,
229        channel_id: &str,
230    ) -> Self {
231        let ttl = std::env::var("LEAN_CTX_CACHE_TTL")
232            .ok()
233            .and_then(|v| v.parse().ok())
234            .unwrap_or(DEFAULT_CACHE_TTL_SECS);
235
236        let startup = detect_startup_context(project_root, startup_cwd);
237        let (session, context_os) = match session_mode {
238            SessionMode::Personal => {
239                let mut session = if let Some(ref root) = startup.project_root {
240                    SessionState::load_latest_for_project_root(root).unwrap_or_default()
241                } else {
242                    SessionState::load_latest().unwrap_or_default()
243                };
244                if let Some(ref root) = startup.project_root {
245                    session.project_root = Some(root.clone());
246                }
247                if let Some(ref cwd) = startup.shell_cwd {
248                    session.shell_cwd = Some(cwd.clone());
249                }
250                (Arc::new(RwLock::new(session)), None)
251            }
252            SessionMode::Shared => {
253                let Some(ref root) = startup.project_root else {
254                    // Shared mode without a project root is not useful; fall back to personal.
255                    return Self::new_with_startup(
256                        project_root,
257                        startup_cwd,
258                        SessionMode::Personal,
259                        workspace_id,
260                        channel_id,
261                    );
262                };
263                let rt = crate::core::context_os::runtime();
264                let session = rt
265                    .shared_sessions
266                    .get_or_load(root, workspace_id, channel_id);
267                rt.metrics.record_session_loaded();
268                // Ensure shell_cwd is refreshed (best-effort).
269                if let Some(ref cwd) = startup.shell_cwd {
270                    if let Ok(mut s) = session.try_write() {
271                        s.shell_cwd = Some(cwd.clone());
272                    }
273                }
274                (session, Some(rt))
275            }
276        };
277
278        Self {
279            cache: Arc::new(RwLock::new(SessionCache::new())),
280            session,
281            tool_calls: Arc::new(RwLock::new(Vec::new())),
282            call_count: Arc::new(AtomicUsize::new(0)),
283            cache_ttl_secs: ttl,
284            last_call: Arc::new(RwLock::new(Instant::now())),
285            agent_id: Arc::new(RwLock::new(None)),
286            client_name: Arc::new(RwLock::new(String::new())),
287            autonomy: Arc::new(autonomy::AutonomyState::new()),
288            loop_detector: Arc::new(RwLock::new(
289                crate::core::loop_detection::LoopDetector::with_config(
290                    &crate::core::config::Config::load().loop_detection,
291                ),
292            )),
293            workflow: Arc::new(RwLock::new(
294                crate::core::workflow::load_active().ok().flatten(),
295            )),
296            ledger: Arc::new(RwLock::new(
297                crate::core::context_ledger::ContextLedger::new(),
298            )),
299            pipeline_stats: Arc::new(RwLock::new(crate::core::pipeline::PipelineStats::new())),
300            session_mode,
301            workspace_id: if workspace_id.trim().is_empty() {
302                "default".to_string()
303            } else {
304                workspace_id.trim().to_string()
305            },
306            channel_id: if channel_id.trim().is_empty() {
307                "default".to_string()
308            } else {
309                channel_id.trim().to_string()
310            },
311            context_os,
312            context_ir: None,
313            registry: Some(std::sync::Arc::new(
314                crate::server::registry::build_registry(),
315            )),
316            rules_stale_checked: Arc::new(std::sync::atomic::AtomicBool::new(false)),
317            last_seen_event_id: Arc::new(std::sync::atomic::AtomicI64::new(0)),
318            startup_project_root: startup.project_root,
319            startup_shell_cwd: startup.shell_cwd,
320        }
321    }
322
323    pub fn checkpoint_interval_effective() -> usize {
324        if let Ok(v) = std::env::var("LEAN_CTX_CHECKPOINT_INTERVAL") {
325            if let Ok(parsed) = v.trim().parse::<usize>() {
326                return parsed;
327            }
328        }
329        let profile_interval = crate::core::profiles::active_profile()
330            .autonomy
331            .checkpoint_interval_effective();
332        if profile_interval > 0 {
333            return profile_interval as usize;
334        }
335        crate::core::config::Config::load().checkpoint_interval as usize
336    }
337
338    /// Resolves a (possibly relative) tool path against the session's project_root.
339    /// Absolute paths and "." are returned as-is. Relative paths like "src/main.rs"
340    /// are joined with project_root so tools work regardless of the server's cwd.
341    pub async fn resolve_path(&self, path: &str) -> Result<String, String> {
342        let normalized = crate::hooks::normalize_tool_path(path);
343        if normalized.is_empty() || normalized == "." {
344            return Ok(normalized);
345        }
346        let p = std::path::Path::new(&normalized);
347
348        let (resolved, jail_root) = {
349            let session = self.session.read().await;
350            let jail_root = session
351                .project_root
352                .as_deref()
353                .or(session.shell_cwd.as_deref())
354                .unwrap_or(".")
355                .to_string();
356
357            let resolved = if p.is_absolute() || p.exists() {
358                std::path::PathBuf::from(&normalized)
359            } else if let Some(ref root) = session.project_root {
360                let joined = std::path::Path::new(root).join(&normalized);
361                if joined.exists() {
362                    joined
363                } else if let Some(ref cwd) = session.shell_cwd {
364                    std::path::Path::new(cwd).join(&normalized)
365                } else {
366                    std::path::Path::new(&jail_root).join(&normalized)
367                }
368            } else if let Some(ref cwd) = session.shell_cwd {
369                std::path::Path::new(cwd).join(&normalized)
370            } else {
371                std::path::Path::new(&jail_root).join(&normalized)
372            };
373
374            (resolved, jail_root)
375        };
376
377        let jail_root_path = std::path::Path::new(&jail_root);
378        let jailed = match crate::core::pathjail::jail_path(&resolved, jail_root_path) {
379            Ok(p) => p,
380            Err(e) => {
381                if p.is_absolute() {
382                    if let Some(new_root) = maybe_derive_project_root_from_absolute(&resolved) {
383                        let candidate_under_jail = resolved.starts_with(jail_root_path);
384                        let allow_reroot = if candidate_under_jail {
385                            false
386                        } else if let Some(ref trusted_root) = self.startup_project_root {
387                            std::path::Path::new(trusted_root) == new_root.as_path()
388                        } else {
389                            !has_project_marker(jail_root_path)
390                                || is_suspicious_root(jail_root_path)
391                        };
392
393                        if allow_reroot {
394                            let mut session = self.session.write().await;
395                            let new_root_str = new_root.to_string_lossy().to_string();
396                            session.project_root = Some(new_root_str.clone());
397                            session.shell_cwd = self
398                                .startup_shell_cwd
399                                .as_ref()
400                                .filter(|cwd| std::path::Path::new(cwd).starts_with(&new_root))
401                                .cloned()
402                                .or_else(|| Some(new_root_str.clone()));
403                            let _ = session.save();
404
405                            crate::core::pathjail::jail_path(&resolved, &new_root)?
406                        } else {
407                            return Err(e);
408                        }
409                    } else {
410                        return Err(e);
411                    }
412                } else {
413                    return Err(e);
414                }
415            }
416        };
417
418        Ok(crate::hooks::normalize_tool_path(
419            &jailed.to_string_lossy().replace('\\', "/"),
420        ))
421    }
422
423    /// Like `resolve_path`, but returns the original path on failure instead of an error.
424    pub async fn resolve_path_or_passthrough(&self, path: &str) -> String {
425        self.resolve_path(path)
426            .await
427            .unwrap_or_else(|_| path.to_string())
428    }
429
430    /// Clears the cache and saves the session if the TTL idle threshold has been exceeded.
431    pub async fn check_idle_expiry(&self) {
432        if self.cache_ttl_secs == 0 {
433            return;
434        }
435        let last = *self.last_call.read().await;
436        if last.elapsed().as_secs() >= self.cache_ttl_secs {
437            {
438                let mut session = self.session.write().await;
439                let _ = session.save();
440            }
441            let mut cache = self.cache.write().await;
442            let count = cache.clear();
443            if count > 0 {
444                tracing::info!(
445                    "Cache auto-cleared after {}s idle ({count} file(s))",
446                    self.cache_ttl_secs
447                );
448            }
449        }
450        *self.last_call.write().await = Instant::now();
451    }
452
453    /// Records a tool call's token savings without timing information.
454    pub async fn record_call(
455        &self,
456        tool: &str,
457        original: usize,
458        saved: usize,
459        mode: Option<String>,
460    ) {
461        self.record_call_with_timing(tool, original, saved, mode, 0)
462            .await;
463    }
464
465    /// Records a tool call like `record_call`, but includes an optional file path for observability.
466    pub async fn record_call_with_path(
467        &self,
468        tool: &str,
469        original: usize,
470        saved: usize,
471        mode: Option<String>,
472        path: Option<&str>,
473    ) {
474        self.record_call_with_timing_inner(tool, original, saved, mode, 0, path)
475            .await;
476    }
477
478    /// Records a tool call's token savings, duration, and emits events and stats.
479    pub async fn record_call_with_timing(
480        &self,
481        tool: &str,
482        original: usize,
483        saved: usize,
484        mode: Option<String>,
485        duration_ms: u64,
486    ) {
487        self.record_call_with_timing_inner(tool, original, saved, mode, duration_ms, None)
488            .await;
489    }
490
491    async fn record_call_with_timing_inner(
492        &self,
493        tool: &str,
494        original: usize,
495        saved: usize,
496        mode: Option<String>,
497        duration_ms: u64,
498        path: Option<&str>,
499    ) {
500        let ts = chrono::Local::now().format("%Y-%m-%d %H:%M:%S").to_string();
501        let mut calls = self.tool_calls.write().await;
502        calls.push(ToolCallRecord {
503            tool: tool.to_string(),
504            original_tokens: original,
505            saved_tokens: saved,
506            mode: mode.clone(),
507            duration_ms,
508            timestamp: ts.clone(),
509        });
510
511        if duration_ms > 0 {
512            Self::append_tool_call_log(tool, duration_ms, original, saved, mode.as_deref(), &ts);
513        }
514
515        crate::core::events::emit_tool_call(
516            tool,
517            original as u64,
518            saved as u64,
519            mode.clone(),
520            duration_ms,
521            path.map(ToString::to_string),
522        );
523
524        let output_tokens = original.saturating_sub(saved);
525        crate::core::stats::record(tool, original, output_tokens);
526
527        let mut session = self.session.write().await;
528        session.record_tool_call(saved as u64, original as u64);
529        if tool == "ctx_shell" {
530            session.record_command();
531        }
532        let pending_save = if session.should_save() {
533            session.prepare_save().ok()
534        } else {
535            None
536        };
537        drop(calls);
538        drop(session);
539
540        if let Some(prepared) = pending_save {
541            tokio::task::spawn_blocking(move || {
542                let _ = prepared.write_to_disk();
543            });
544        }
545
546        self.write_mcp_live_stats().await;
547    }
548
549    /// Returns true if over an hour has passed since the last tool call.
550    pub async fn is_prompt_cache_stale(&self) -> bool {
551        let last = *self.last_call.read().await;
552        last.elapsed().as_secs() > 3600
553    }
554
555    /// Promotes lightweight read modes to richer ones when the prompt cache is stale.
556    pub fn upgrade_mode_if_stale(mode: &str, stale: bool) -> &str {
557        if !stale {
558            return mode;
559        }
560        match mode {
561            "full" => "full",
562            "map" => "signatures",
563            m => m,
564        }
565    }
566
567    /// Increments the call counter and returns true if a checkpoint is due.
568    pub fn increment_and_check(&self) -> bool {
569        let count = self.call_count.fetch_add(1, Ordering::Relaxed) + 1;
570        let interval = Self::checkpoint_interval_effective();
571        interval > 0 && count.is_multiple_of(interval)
572    }
573
574    /// Generates a compressed context checkpoint with session state and multi-agent sync.
575    pub async fn auto_checkpoint(&self) -> Option<String> {
576        let cache = self.cache.read().await;
577        if cache.get_all_entries().is_empty() {
578            return None;
579        }
580        let complexity = crate::core::adaptive::classify_from_context(&cache);
581        let checkpoint = ctx_compress::handle(&cache, true, CrpMode::effective());
582        drop(cache);
583
584        let mut session = self.session.write().await;
585        let _ = session.save();
586        let session_summary = session.format_compact();
587        let has_insights = !session.findings.is_empty() || !session.decisions.is_empty();
588        let project_root = session.project_root.clone();
589        drop(session);
590
591        if has_insights {
592            if let Some(ref root) = project_root {
593                let root = root.clone();
594                std::thread::spawn(move || {
595                    auto_consolidate_knowledge(&root);
596                });
597            }
598        }
599
600        let multi_agent_block = self
601            .auto_multi_agent_checkpoint(project_root.as_ref())
602            .await;
603
604        self.record_call("ctx_compress", 0, 0, Some("auto".to_string()))
605            .await;
606
607        self.record_cep_snapshot().await;
608
609        Some(format!(
610            "{checkpoint}\n\n--- SESSION STATE ---\n{session_summary}\n\n{}{multi_agent_block}",
611            complexity.instruction_suffix()
612        ))
613    }
614
615    async fn auto_multi_agent_checkpoint(&self, project_root: Option<&String>) -> String {
616        let Some(root) = project_root else {
617            return String::new();
618        };
619
620        let registry = crate::core::agents::AgentRegistry::load_or_create();
621        let active = registry.list_active(Some(root));
622        if active.len() <= 1 {
623            return String::new();
624        }
625
626        let agent_id = self.agent_id.read().await;
627        let my_id = match agent_id.as_deref() {
628            Some(id) => id.to_string(),
629            None => return String::new(),
630        };
631        drop(agent_id);
632
633        let cache = self.cache.read().await;
634        let entries = cache.get_all_entries();
635        if !entries.is_empty() {
636            let mut by_access: Vec<_> = entries.iter().collect();
637            by_access.sort_by_key(|x| std::cmp::Reverse(x.1.read_count));
638            let top_paths: Vec<&str> = by_access
639                .iter()
640                .take(5)
641                .map(|(key, _)| key.as_str())
642                .collect();
643            let paths_csv = top_paths.join(",");
644
645            let _ = ctx_share::handle("push", Some(&my_id), None, Some(&paths_csv), None, &cache);
646        }
647        drop(cache);
648
649        let pending_count = registry
650            .scratchpad
651            .iter()
652            .filter(|e| !e.read_by.contains(&my_id) && e.from_agent != my_id)
653            .count();
654
655        let shared_dir = crate::core::data_dir::lean_ctx_data_dir()
656            .unwrap_or_default()
657            .join("agents")
658            .join("shared");
659        let shared_count = if shared_dir.exists() {
660            std::fs::read_dir(&shared_dir).map_or(0, std::iter::Iterator::count)
661        } else {
662            0
663        };
664
665        let agent_names: Vec<String> = active
666            .iter()
667            .map(|a| {
668                let role = a.role.as_deref().unwrap_or(&a.agent_type);
669                format!("{role}({})", &a.agent_id[..8.min(a.agent_id.len())])
670            })
671            .collect();
672
673        format!(
674            "\n\n--- MULTI-AGENT SYNC ---\nAgents: {} | Pending msgs: {} | Shared contexts: {}\nAuto-shared top-5 cached files.\n--- END SYNC ---",
675            agent_names.join(", "),
676            pending_count,
677            shared_count,
678        )
679    }
680
681    /// Appends a tool call entry to the rotating `tool-calls.log` file.
682    pub fn append_tool_call_log(
683        tool: &str,
684        duration_ms: u64,
685        original: usize,
686        saved: usize,
687        mode: Option<&str>,
688        timestamp: &str,
689    ) {
690        const MAX_LOG_LINES: usize = 50;
691        if let Ok(dir) = crate::core::data_dir::lean_ctx_data_dir() {
692            let log_path = dir.join("tool-calls.log");
693            let mode_str = mode.unwrap_or("-");
694            let slow = if duration_ms > 5000 { " **SLOW**" } else { "" };
695            let line = format!(
696                "{timestamp}\t{tool}\t{duration_ms}ms\torig={original}\tsaved={saved}\tmode={mode_str}{slow}\n"
697            );
698
699            let mut lines: Vec<String> = std::fs::read_to_string(&log_path)
700                .unwrap_or_default()
701                .lines()
702                .map(std::string::ToString::to_string)
703                .collect();
704
705            lines.push(line.trim_end().to_string());
706            if lines.len() > MAX_LOG_LINES {
707                lines.drain(0..lines.len() - MAX_LOG_LINES);
708            }
709
710            let _ = std::fs::write(&log_path, lines.join("\n") + "\n");
711        }
712    }
713
714    fn compute_cep_stats(
715        calls: &[ToolCallRecord],
716        stats: &crate::core::cache::CacheStats,
717        complexity: &crate::core::adaptive::TaskComplexity,
718    ) -> CepComputedStats {
719        let total_original: u64 = calls.iter().map(|c| c.original_tokens as u64).sum();
720        let total_saved: u64 = calls.iter().map(|c| c.saved_tokens as u64).sum();
721        let total_compressed = total_original.saturating_sub(total_saved);
722        let compression_rate = if total_original > 0 {
723            total_saved as f64 / total_original as f64
724        } else {
725            0.0
726        };
727
728        let modes_used: std::collections::HashSet<&str> =
729            calls.iter().filter_map(|c| c.mode.as_deref()).collect();
730        let mode_diversity = (modes_used.len() as f64 / 10.0).min(1.0);
731        let cache_util = stats.hit_rate() / 100.0;
732        let cep_score = cache_util * 0.3 + mode_diversity * 0.2 + compression_rate * 0.5;
733
734        let mut mode_counts: std::collections::HashMap<String, u64> =
735            std::collections::HashMap::new();
736        for call in calls {
737            if let Some(ref mode) = call.mode {
738                *mode_counts.entry(mode.clone()).or_insert(0) += 1;
739            }
740        }
741
742        CepComputedStats {
743            cep_score: (cep_score * 100.0).round() as u32,
744            cache_util: (cache_util * 100.0).round() as u32,
745            mode_diversity: (mode_diversity * 100.0).round() as u32,
746            compression_rate: (compression_rate * 100.0).round() as u32,
747            total_original,
748            total_compressed,
749            total_saved,
750            mode_counts,
751            complexity: format!("{complexity:?}"),
752            cache_hits: stats.cache_hits,
753            total_reads: stats.total_reads,
754            tool_call_count: calls.len() as u64,
755        }
756    }
757
758    async fn write_mcp_live_stats(&self) {
759        let count = self.call_count.load(Ordering::Relaxed);
760        if count > 1 && !count.is_multiple_of(5) {
761            return;
762        }
763
764        let cache = self.cache.read().await;
765        let calls = self.tool_calls.read().await;
766        let stats = cache.get_stats();
767        let complexity = crate::core::adaptive::classify_from_context(&cache);
768
769        let cs = Self::compute_cep_stats(&calls, stats, &complexity);
770        let started_at = calls
771            .first()
772            .map(|c| c.timestamp.clone())
773            .unwrap_or_default();
774
775        drop(cache);
776        drop(calls);
777        let live = serde_json::json!({
778            "cep_score": cs.cep_score,
779            "cache_utilization": cs.cache_util,
780            "mode_diversity": cs.mode_diversity,
781            "compression_rate": cs.compression_rate,
782            "task_complexity": cs.complexity,
783            "files_cached": cs.total_reads,
784            "total_reads": cs.total_reads,
785            "cache_hits": cs.cache_hits,
786            "tokens_saved": cs.total_saved,
787            "tokens_original": cs.total_original,
788            "tool_calls": cs.tool_call_count,
789            "started_at": started_at,
790            "updated_at": chrono::Local::now().to_rfc3339(),
791        });
792
793        if let Ok(dir) = crate::core::data_dir::lean_ctx_data_dir() {
794            let _ = std::fs::write(dir.join("mcp-live.json"), live.to_string());
795        }
796    }
797
798    /// Persists a CEP (Context Efficiency Protocol) score snapshot for analytics.
799    pub async fn record_cep_snapshot(&self) {
800        let cache = self.cache.read().await;
801        let calls = self.tool_calls.read().await;
802        let stats = cache.get_stats();
803        let complexity = crate::core::adaptive::classify_from_context(&cache);
804
805        let cs = Self::compute_cep_stats(&calls, stats, &complexity);
806
807        drop(cache);
808        drop(calls);
809
810        crate::core::stats::record_cep_session(
811            cs.cep_score,
812            cs.cache_hits,
813            cs.total_reads,
814            cs.total_original,
815            cs.total_compressed,
816            &cs.mode_counts,
817            cs.tool_call_count,
818            &cs.complexity,
819        );
820    }
821}
822
823#[derive(Clone, Debug, Default)]
824struct StartupContext {
825    project_root: Option<String>,
826    shell_cwd: Option<String>,
827}
828
829/// Creates a new `LeanCtxServer` with default configuration.
830pub fn create_server() -> LeanCtxServer {
831    LeanCtxServer::new()
832}
833
834const PROJECT_ROOT_MARKERS: &[&str] = &[
835    ".git",
836    ".lean-ctx.toml",
837    "Cargo.toml",
838    "package.json",
839    "go.mod",
840    "pyproject.toml",
841    "pom.xml",
842    "build.gradle",
843    "Makefile",
844    ".planning",
845];
846
847fn has_project_marker(dir: &std::path::Path) -> bool {
848    PROJECT_ROOT_MARKERS.iter().any(|m| dir.join(m).exists())
849}
850
851fn is_suspicious_root(dir: &std::path::Path) -> bool {
852    let s = dir.to_string_lossy();
853    s.contains("/.claude")
854        || s.contains("/.codex")
855        || s.contains("\\.claude")
856        || s.contains("\\.codex")
857}
858
859fn canonicalize_path(path: &std::path::Path) -> String {
860    crate::core::pathutil::safe_canonicalize_or_self(path)
861        .to_string_lossy()
862        .to_string()
863}
864
865fn detect_startup_context(
866    explicit_project_root: Option<&str>,
867    startup_cwd: Option<&std::path::Path>,
868) -> StartupContext {
869    let shell_cwd = startup_cwd.map(canonicalize_path);
870    let project_root = explicit_project_root
871        .map(|root| canonicalize_path(std::path::Path::new(root)))
872        .or_else(|| {
873            startup_cwd
874                .and_then(maybe_derive_project_root_from_absolute)
875                .map(|p| canonicalize_path(&p))
876        });
877
878    let shell_cwd = match (shell_cwd, project_root.as_ref()) {
879        (Some(cwd), Some(root))
880            if std::path::Path::new(&cwd).starts_with(std::path::Path::new(root)) =>
881        {
882            Some(cwd)
883        }
884        (_, Some(root)) => Some(root.clone()),
885        (cwd, None) => cwd,
886    };
887
888    StartupContext {
889        project_root,
890        shell_cwd,
891    }
892}
893
894fn maybe_derive_project_root_from_absolute(abs: &std::path::Path) -> Option<std::path::PathBuf> {
895    let mut cur = if abs.is_dir() {
896        abs.to_path_buf()
897    } else {
898        abs.parent()?.to_path_buf()
899    };
900    loop {
901        if has_project_marker(&cur) {
902            return Some(crate::core::pathutil::safe_canonicalize_or_self(&cur));
903        }
904        if !cur.pop() {
905            break;
906        }
907    }
908    None
909}
910
911fn auto_consolidate_knowledge(project_root: &str) {
912    use crate::core::knowledge::ProjectKnowledge;
913    use crate::core::session::SessionState;
914
915    let Some(session) = SessionState::load_latest() else {
916        return;
917    };
918
919    if session.findings.is_empty() && session.decisions.is_empty() {
920        return;
921    }
922
923    let Ok(policy) = crate::core::config::Config::load().memory_policy_effective() else {
924        return;
925    };
926    let mut knowledge = ProjectKnowledge::load_or_create(project_root);
927
928    for finding in &session.findings {
929        let key = if let Some(ref file) = finding.file {
930            if let Some(line) = finding.line {
931                format!("{file}:{line}")
932            } else {
933                file.clone()
934            }
935        } else {
936            "finding-auto".to_string()
937        };
938        knowledge.remember("finding", &key, &finding.summary, &session.id, 0.7, &policy);
939    }
940
941    for decision in &session.decisions {
942        let key = decision
943            .summary
944            .chars()
945            .take(50)
946            .collect::<String>()
947            .replace(' ', "-")
948            .to_lowercase();
949        knowledge.remember(
950            "decision",
951            &key,
952            &decision.summary,
953            &session.id,
954            0.85,
955            &policy,
956        );
957    }
958
959    let task_desc = session
960        .task
961        .as_ref()
962        .map(|t| t.description.clone())
963        .unwrap_or_default();
964
965    let summary = format!(
966        "Auto-consolidate session {}: {} — {} findings, {} decisions",
967        session.id,
968        task_desc,
969        session.findings.len(),
970        session.decisions.len()
971    );
972    knowledge.consolidate(&summary, vec![session.id.clone()], &policy);
973    let _ = knowledge.save();
974}
975
976#[cfg(test)]
977mod resolve_path_tests {
978    use super::*;
979
980    fn create_git_root(path: &std::path::Path) -> String {
981        std::fs::create_dir_all(path.join(".git")).unwrap();
982        canonicalize_path(path)
983    }
984
985    #[tokio::test]
986    async fn resolve_path_can_reroot_to_trusted_startup_root_when_session_root_is_stale() {
987        let tmp = tempfile::tempdir().unwrap();
988        let stale = tmp.path().join("stale");
989        let real = tmp.path().join("real");
990        std::fs::create_dir_all(&stale).unwrap();
991        let real_root = create_git_root(&real);
992        std::fs::write(real.join("a.txt"), "ok").unwrap();
993
994        let server = LeanCtxServer::new_with_startup(
995            None,
996            Some(real.as_path()),
997            SessionMode::Personal,
998            "default",
999            "default",
1000        );
1001        {
1002            let mut session = server.session.write().await;
1003            session.project_root = Some(stale.to_string_lossy().to_string());
1004            session.shell_cwd = Some(stale.to_string_lossy().to_string());
1005        }
1006
1007        let out = server
1008            .resolve_path(&real.join("a.txt").to_string_lossy())
1009            .await
1010            .unwrap();
1011
1012        assert!(out.ends_with("/a.txt"));
1013
1014        let session = server.session.read().await;
1015        assert_eq!(session.project_root.as_deref(), Some(real_root.as_str()));
1016        assert_eq!(session.shell_cwd.as_deref(), Some(real_root.as_str()));
1017    }
1018
1019    #[tokio::test]
1020    async fn resolve_path_rejects_absolute_path_outside_trusted_startup_root() {
1021        let tmp = tempfile::tempdir().unwrap();
1022        let stale = tmp.path().join("stale");
1023        let root = tmp.path().join("root");
1024        let other = tmp.path().join("other");
1025        std::fs::create_dir_all(&stale).unwrap();
1026        create_git_root(&root);
1027        let _other_value = create_git_root(&other);
1028        std::fs::write(other.join("b.txt"), "no").unwrap();
1029
1030        let server = LeanCtxServer::new_with_startup(
1031            None,
1032            Some(root.as_path()),
1033            SessionMode::Personal,
1034            "default",
1035            "default",
1036        );
1037        {
1038            let mut session = server.session.write().await;
1039            session.project_root = Some(stale.to_string_lossy().to_string());
1040            session.shell_cwd = Some(stale.to_string_lossy().to_string());
1041        }
1042
1043        let err = server
1044            .resolve_path(&other.join("b.txt").to_string_lossy())
1045            .await
1046            .unwrap_err();
1047        assert!(err.contains("path escapes project root"));
1048
1049        let session = server.session.read().await;
1050        assert_eq!(
1051            session.project_root.as_deref(),
1052            Some(stale.to_string_lossy().as_ref())
1053        );
1054    }
1055
1056    #[tokio::test]
1057    #[allow(clippy::await_holding_lock)]
1058    async fn startup_prefers_workspace_scoped_session_over_global_latest() {
1059        let _lock = crate::core::data_dir::test_env_lock();
1060        let _data = tempfile::tempdir().unwrap();
1061        let _tmp = tempfile::tempdir().unwrap();
1062
1063        std::env::set_var("LEAN_CTX_DATA_DIR", _data.path());
1064
1065        let repo_a = _tmp.path().join("repo-a");
1066        let repo_b = _tmp.path().join("repo-b");
1067        let root_a = create_git_root(&repo_a);
1068        let root_b = create_git_root(&repo_b);
1069
1070        let mut session_b = SessionState::new();
1071        session_b.project_root = Some(root_b.clone());
1072        session_b.shell_cwd = Some(root_b.clone());
1073        session_b.set_task("repo-b task", None);
1074        session_b.save().unwrap();
1075
1076        std::thread::sleep(std::time::Duration::from_millis(50));
1077
1078        let mut session_a = SessionState::new();
1079        session_a.project_root = Some(root_a.clone());
1080        session_a.shell_cwd = Some(root_a.clone());
1081        session_a.set_task("repo-a latest task", None);
1082        session_a.save().unwrap();
1083
1084        let server = LeanCtxServer::new_with_startup(
1085            None,
1086            Some(repo_b.as_path()),
1087            SessionMode::Personal,
1088            "default",
1089            "default",
1090        );
1091        std::env::remove_var("LEAN_CTX_DATA_DIR");
1092
1093        let session = server.session.read().await;
1094        assert_eq!(session.project_root.as_deref(), Some(root_b.as_str()));
1095        assert_eq!(session.shell_cwd.as_deref(), Some(root_b.as_str()));
1096        assert_eq!(
1097            session.task.as_ref().map(|t| t.description.as_str()),
1098            Some("repo-b task")
1099        );
1100    }
1101
1102    #[tokio::test]
1103    #[allow(clippy::await_holding_lock)]
1104    async fn startup_creates_fresh_session_for_new_workspace_and_preserves_subdir_cwd() {
1105        let _lock = crate::core::data_dir::test_env_lock();
1106        let _data = tempfile::tempdir().unwrap();
1107        let _tmp = tempfile::tempdir().unwrap();
1108
1109        std::env::set_var("LEAN_CTX_DATA_DIR", _data.path());
1110
1111        let repo_a = _tmp.path().join("repo-a");
1112        let repo_b = _tmp.path().join("repo-b");
1113        let repo_b_src = repo_b.join("src");
1114        let root_a = create_git_root(&repo_a);
1115        let root_b = create_git_root(&repo_b);
1116        std::fs::create_dir_all(&repo_b_src).unwrap();
1117        let repo_b_src_value = canonicalize_path(&repo_b_src);
1118
1119        let mut session_a = SessionState::new();
1120        session_a.project_root = Some(root_a.clone());
1121        session_a.shell_cwd = Some(root_a.clone());
1122        session_a.set_task("repo-a latest task", None);
1123        let old_id = session_a.id.clone();
1124        session_a.save().unwrap();
1125
1126        let server = LeanCtxServer::new_with_startup(
1127            None,
1128            Some(repo_b_src.as_path()),
1129            SessionMode::Personal,
1130            "default",
1131            "default",
1132        );
1133        std::env::remove_var("LEAN_CTX_DATA_DIR");
1134
1135        let session = server.session.read().await;
1136        assert_eq!(session.project_root.as_deref(), Some(root_b.as_str()));
1137        assert_eq!(
1138            session.shell_cwd.as_deref(),
1139            Some(repo_b_src_value.as_str())
1140        );
1141        assert!(session.task.is_none());
1142        assert_ne!(session.id, old_id);
1143    }
1144
1145    #[tokio::test]
1146    async fn resolve_path_does_not_auto_update_when_current_root_is_real_project() {
1147        let tmp = tempfile::tempdir().unwrap();
1148        let root = tmp.path().join("root");
1149        let other = tmp.path().join("other");
1150        let root_value = create_git_root(&root);
1151        create_git_root(&other);
1152        std::fs::write(other.join("b.txt"), "no").unwrap();
1153
1154        let root_str = root.to_string_lossy().to_string();
1155        let server = LeanCtxServer::new_with_project_root(Some(&root_str));
1156
1157        let err = server
1158            .resolve_path(&other.join("b.txt").to_string_lossy())
1159            .await
1160            .unwrap_err();
1161        assert!(err.contains("path escapes project root"));
1162
1163        let session = server.session.read().await;
1164        assert_eq!(session.project_root.as_deref(), Some(root_value.as_str()));
1165    }
1166}
lean_ctx/tools/mod.rs

lean_ctx/tools/
mod.rs
