Function parse_hook_event

atomic-agent/src/hooks/claude_code/parse.rs:97–127

Parse raw JSON input from a Claude Code hook into a [`TurnEvent`]. This is the core parsing logic extracted from the `AgentHook::parse_event` implementation. Each hook type has a different JSON schema.

(
    hook: &super::ClaudeCodeHook,
    hook_type: HookType,
    input: &[u8],
)

/// This is the core parsing logic extracted from the `AgentHook::parse_event`
/// implementation. Each hook type has a different JSON schema.
pub(super) fn parse_hook_event(
    hook: &super::ClaudeCodeHook,
    hook_type: HookType,
    input: &[u8],
) -> AgentResult<TurnEvent> {
    let agent_name = hook.name();
    if input.is_empty() {
        return Err(AgentError::HookInputEmpty {
            agent: agent_name.to_string(),
            hook_type: hook_type.as_str().to_string(),
        });
    }

    // Preserve raw JSON for debugging
    let raw_json: serde_json::Value =
        serde_json::from_slice(input).map_err(|e| AgentError::HookParseFailed {
            agent: agent_name.to_string(),
            hook_type: hook_type.as_str().to_string(),
            reason: e.to_string(),
        })?;

    match hook_type {
        HookType::SessionStart => parse_session_start(agent_name, hook_type, raw_json),
        HookType::SessionEnd | HookType::TurnEnd => {
            parse_session_info(agent_name, hook_type, raw_json)
        }
        HookType::TurnStart => parse_user_prompt(agent_name, hook_type, raw_json),
        HookType::PreToolUse => parse_pre_tool(agent_name, hook_type, raw_json),
        HookType::PostToolUse => parse_post_tool(agent_name, hook_type, raw_json),
    }
}

/// Extract the session_id from parsed input, returning a default if missing.
fn extract_session_id(session_id: Option<String>) -> String {