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use crate::Result;
use agtrace_types::*;
use chrono::DateTime;
use std::path::Path;
use uuid::Uuid;
use crate::builder::{EventBuilder, SemanticSuffix};
use crate::gemini::schema::{GeminiMessage, GeminiSession};
/// Normalize Gemini session to events
/// Unfolds nested structure (thoughts[], toolCalls[]) into event stream
pub(crate) fn normalize_gemini_session(
session: &GeminiSession,
raw_messages: Vec<serde_json::Value>,
) -> Vec<AgentEvent> {
// Create session_id UUID from session_id string (deterministic)
let session_id_uuid = Uuid::new_v5(&Uuid::NAMESPACE_OID, session.session_id.as_bytes());
let mut builder = EventBuilder::new(session_id_uuid);
let mut events = Vec::new();
for (idx, msg) in session.messages.iter().enumerate() {
let raw_value = raw_messages
.get(idx)
.cloned()
.unwrap_or(serde_json::Value::Null);
match msg {
GeminiMessage::User(user_msg) => {
// Skip numeric IDs (legacy CLI events)
if user_msg.id.parse::<u32>().is_ok() {
continue;
}
let timestamp = parse_timestamp(&user_msg.timestamp);
builder.build_and_push(
&mut events,
&user_msg.id,
SemanticSuffix::User,
timestamp,
EventPayload::User(UserPayload {
text: user_msg.content.clone(),
}),
Some(raw_value),
StreamId::Main,
);
}
GeminiMessage::Gemini(gemini_msg) => {
let timestamp = parse_timestamp(&gemini_msg.timestamp);
let base_id = &gemini_msg.id;
// 1. Reasoning events (thoughts)
for (idx, thought) in gemini_msg.thoughts.iter().enumerate() {
let indexed_base_id = format!("{}-thought-{}", base_id, idx);
builder.build_and_push(
&mut events,
&indexed_base_id,
SemanticSuffix::Reasoning,
timestamp,
EventPayload::Reasoning(ReasoningPayload {
text: format!("{}: {}", thought.subject, thought.description),
}),
Some(raw_value.clone()),
StreamId::Main,
);
}
// 2. Tool calls and results
for (idx, tool_call) in gemini_msg.tool_calls.iter().enumerate() {
let indexed_base_id = format!("{}-tool-{}", base_id, idx);
// ToolCall event
let tool_call_uuid = builder.build_and_push(
&mut events,
&indexed_base_id,
SemanticSuffix::ToolCall,
timestamp,
EventPayload::ToolCall(super::mapper::normalize_gemini_tool_call(
tool_call.name.clone(),
tool_call.args.clone(),
Some(tool_call.id.clone()),
tool_call.display_name.clone(),
)),
Some(raw_value.clone()),
StreamId::Main,
);
// Register tool call ID mapping (provider ID -> UUID)
builder.register_tool_call(tool_call.id.clone(), tool_call_uuid);
// ToolResult event (if result exists)
if !tool_call.result.is_empty() {
let output = tool_call
.result_display
.clone()
.unwrap_or_else(|| format!("{:?}", tool_call.result));
let is_error = tool_call
.status
.as_ref()
.map(|s| s == "error")
.unwrap_or(false);
builder.build_and_push(
&mut events,
&indexed_base_id,
SemanticSuffix::ToolResult,
timestamp,
EventPayload::ToolResult(ToolResultPayload {
output,
tool_call_id: tool_call_uuid, // Reference to ToolCall UUID
is_error,
agent_id: None,
}),
Some(raw_value.clone()),
StreamId::Main,
);
}
}
// 3. Message event (assistant response)
builder.build_and_push(
&mut events,
base_id,
SemanticSuffix::Message,
timestamp,
EventPayload::Message(MessagePayload {
text: gemini_msg.content.clone(),
}),
Some(raw_value.clone()),
StreamId::Main,
);
// 4. TokenUsage event (sidecar attached to message)
// Gemini returns turn-level totals, so we attach to the last generation event
//
// Gemini Token Conversion Rationale:
//
// Input mapping (verified from gemini-cli telemetry):
// cached = cached (cached content tokens, from prompt caching)
// uncached = input (fresh input tokens, not from cache)
// Note: Gemini's schema guarantees: prompt = cached + input
//
// Output mapping (verified from gemini-cli schema):
// generated = output (normal text generation)
// reasoning = thoughts (thinking/reasoning tokens)
// tool = tool (tool call tokens)
// Note: All three fields are explicit in Gemini's TokenUsage type
builder.build_and_push(
&mut events,
base_id,
SemanticSuffix::TokenUsage,
timestamp,
EventPayload::TokenUsage(TokenUsagePayload::new(
TokenInput::new(
gemini_msg.tokens.cached as u64,
gemini_msg.tokens.input as u64,
),
TokenOutput::new(
gemini_msg.tokens.output as u64,
gemini_msg.tokens.thoughts as u64,
gemini_msg.tokens.tool as u64,
),
)),
Some(raw_value),
StreamId::Main,
);
}
GeminiMessage::Info(info_msg) => {
let timestamp = parse_timestamp(&info_msg.timestamp);
builder.build_and_push(
&mut events,
&info_msg.id,
SemanticSuffix::Notification,
timestamp,
EventPayload::Notification(NotificationPayload {
text: info_msg.content.clone(),
level: Some("info".to_string()),
}),
Some(raw_value),
StreamId::Main,
);
}
}
}
events
}
/// Parse Gemini timestamp to DateTime<Utc>
fn parse_timestamp(ts: &str) -> DateTime<chrono::Utc> {
DateTime::parse_from_rfc3339(ts)
.map(|dt| dt.with_timezone(&chrono::Utc))
.unwrap_or_else(|_| chrono::Utc::now())
}
/// Gemini session parser implementation
pub struct GeminiParser;
impl crate::traits::SessionParser for GeminiParser {
fn parse_file(&self, path: &Path) -> Result<Vec<AgentEvent>> {
super::io::normalize_gemini_file(path)
}
fn parse_record(&self, content: &str) -> Result<Option<AgentEvent>> {
// Gemini uses JSON format (not JSONL), parse as AgentEvent
match serde_json::from_str::<AgentEvent>(content) {
Ok(event) => Ok(Some(event)),
Err(_) => Ok(None), // Skip malformed lines
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::gemini::schema::{GeminiAssistantMessage, TokenUsage, UserMessage};
#[test]
fn test_normalize_user_message() {
let session = GeminiSession {
session_id: "test-session".to_string(),
project_hash: agtrace_types::ProjectHash::from("test-hash"),
start_time: "2024-01-01T00:00:00Z".to_string(),
last_updated: "2024-01-01T00:00:00Z".to_string(),
messages: vec![GeminiMessage::User(UserMessage {
id: "uuid-123".to_string(),
timestamp: "2024-01-01T00:00:00Z".to_string(),
content: "Hello".to_string(),
})],
};
let events = normalize_gemini_session(&session, vec![]);
assert_eq!(events.len(), 1);
match &events[0].payload {
EventPayload::User(payload) => assert_eq!(payload.text, "Hello"),
_ => panic!("Expected User payload"),
}
assert_eq!(events[0].parent_id, None);
}
#[test]
fn test_normalize_assistant_with_tokens() {
let session = GeminiSession {
session_id: "test-session".to_string(),
project_hash: agtrace_types::ProjectHash::from("test-hash"),
start_time: "2024-01-01T00:00:00Z".to_string(),
last_updated: "2024-01-01T00:00:00Z".to_string(),
messages: vec![GeminiMessage::Gemini(GeminiAssistantMessage {
id: "uuid-456".to_string(),
timestamp: "2024-01-01T00:00:01Z".to_string(),
content: "Hello back!".to_string(),
model: "gemini-2.0-flash".to_string(),
thoughts: vec![],
tool_calls: vec![],
tokens: TokenUsage {
input: 8, // uncached input tokens
output: 4, // normal text generation tokens (total output = output + thoughts + tool = 4 + 1 + 0 = 5)
total: 15,
cached: 2, // cached input tokens (total input = cached + input = 2 + 8 = 10)
thoughts: 1,
tool: 0,
},
})],
};
let events = normalize_gemini_session(&session, vec![]);
// Should have: Message + TokenUsage (2 events)
assert_eq!(events.len(), 2);
match &events[0].payload {
EventPayload::Message(payload) => assert_eq!(payload.text, "Hello back!"),
_ => panic!("Expected Message payload"),
}
match &events[1].payload {
EventPayload::TokenUsage(payload) => {
assert_eq!(payload.input.total(), 10);
assert_eq!(payload.output.total(), 5);
assert_eq!(payload.total_tokens(), 15);
assert_eq!(payload.input.cached, 2);
assert_eq!(payload.output.reasoning, 1);
}
_ => panic!("Expected TokenUsage payload"),
}
}
}