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use crate::Result;
use std::io::{BufRead, BufReader};
use std::path::Path;
use super::parser::normalize_claude_session;
use super::schema::ClaudeRecord;
/// Parse Claude Code JSONL file and normalize to AgentEvent
pub fn normalize_claude_file(path: &Path) -> Result<Vec<agtrace_types::AgentEvent>> {
let text = std::fs::read_to_string(path)?;
let mut records: Vec<ClaudeRecord> = Vec::new();
for line in text.lines() {
let line = line.trim();
if line.is_empty() {
continue;
}
let record: ClaudeRecord = serde_json::from_str(line)?;
records.push(record);
}
Ok(normalize_claude_session(records))
}
/// Extract cwd from a Claude session file by reading the first few lines
pub fn extract_cwd_from_claude_file(path: &Path) -> Option<String> {
let file = std::fs::File::open(path).ok()?;
let reader = BufReader::new(file);
for line in reader.lines().take(10).flatten() {
if let Ok(record) = serde_json::from_str::<ClaudeRecord>(&line) {
match record {
ClaudeRecord::User(user) => {
if let Some(cwd) = user.cwd {
return Some(cwd);
}
}
ClaudeRecord::Assistant(asst) => {
if let Some(cwd) = asst.cwd {
return Some(cwd);
}
}
_ => continue,
}
}
}
None
}
#[derive(Debug)]
pub struct ClaudeHeader {
pub session_id: Option<String>,
pub cwd: Option<String>,
pub timestamp: Option<String>,
pub snippet: Option<String>,
pub is_sidechain: bool,
pub subagent_id: Option<String>,
}
/// Extract header information from Claude file (for scanning)
pub fn extract_claude_header(path: &Path) -> Result<ClaudeHeader> {
let file = std::fs::File::open(path)?;
let reader = BufReader::new(file);
let mut session_id = None;
let mut cwd = None;
let mut timestamp = None;
let mut snippet = None;
let mut is_sidechain = false;
let mut subagent_id = None;
let mut meta_message_ids = std::collections::HashSet::new();
for line in reader.lines().take(200).flatten() {
if let Ok(record) = serde_json::from_str::<ClaudeRecord>(&line) {
match &record {
ClaudeRecord::FileHistorySnapshot(_) => {
// File history snapshots mark the end of a meta message chain
meta_message_ids.clear();
}
ClaudeRecord::User(user) => {
if session_id.is_none() {
session_id = Some(user.session_id.clone());
}
if cwd.is_none() {
cwd = user.cwd.clone();
}
if timestamp.is_none() {
timestamp = Some(user.timestamp.clone());
}
// Track meta message IDs and their descendants
if user.is_meta {
meta_message_ids.insert(user.uuid.clone());
}
// Check if this message's parent is a meta message (or descendant)
let parent_is_meta = user
.parent_uuid
.as_ref()
.map(|p| meta_message_ids.contains(p))
.unwrap_or(false);
// If parent is meta, this message is also considered meta-related
if parent_is_meta {
meta_message_ids.insert(user.uuid.clone());
}
// Extract snippet from first non-sidechain, non-meta user message
// Also skip messages whose parent is meta
if snippet.is_none() && !user.is_sidechain && !user.is_meta && !parent_is_meta {
snippet = user.message.content.iter().find_map(|c| match c {
super::schema::UserContent::Text { text } => {
Some(agtrace_types::truncate(text, 200))
}
_ => None,
});
}
// Extract subagent_id from UserRecord.agent_id (sidechain files)
if subagent_id.is_none() && user.agent_id.is_some() {
subagent_id = user.agent_id.clone();
}
// Also check ToolResult with agentId field
if subagent_id.is_none() {
for content in &user.message.content {
if let super::schema::UserContent::ToolResult {
agent_id: Some(aid),
..
} = content
{
subagent_id = Some(aid.clone());
break;
}
}
}
is_sidechain = user.is_sidechain;
}
ClaudeRecord::Assistant(asst) => {
if session_id.is_none() {
session_id = Some(asst.session_id.clone());
}
if cwd.is_none() {
cwd = asst.cwd.clone();
}
if timestamp.is_none() {
timestamp = Some(asst.timestamp.clone());
}
}
_ => {}
}
if session_id.is_some() && cwd.is_some() && timestamp.is_some() && snippet.is_some() {
break;
}
}
}
Ok(ClaudeHeader {
session_id,
cwd,
timestamp,
snippet,
is_sidechain,
subagent_id,
})
}