Function restoreSessionStateFromLog

src/utils/sessionRestore.ts:99–150

(
  result: ResumeResult,
  setAppState: (f: (prev: AppState) => AppState) => void,
)

 * Used by both SDK (print.ts) and interactive (REPL.tsx, main.tsx) resume paths.
 */
export function restoreSessionStateFromLog(
  result: ResumeResult,
  setAppState: (f: (prev: AppState) => AppState) => void,
): void {
  // Restore file history state
  if (result.fileHistorySnapshots && result.fileHistorySnapshots.length > 0) {
    fileHistoryRestoreStateFromLog(result.fileHistorySnapshots, newState => {
      setAppState(prev => ({ ...prev, fileHistory: newState }))
    })
  }

  // Restore attribution state (ant-only feature)
  if (
    feature('COMMIT_ATTRIBUTION') &&
    result.attributionSnapshots &&
    result.attributionSnapshots.length > 0
  ) {
    attributionRestoreStateFromLog(result.attributionSnapshots, newState => {
      setAppState(prev => ({ ...prev, attribution: newState }))
    })
  }

  // Restore context-collapse commit log + staged snapshot. Must run before
  // the first query() so projectView() can rebuild the collapsed view from
  // the resumed Message[]. Called unconditionally (even with
  // undefined/empty entries) because restoreFromEntries resets the store
  // first — without that, an in-session /resume into a session with no
  // commits would leave the prior session's stale commit log intact.
  if (feature('CONTEXT_COLLAPSE')) {
    /* eslint-disable @typescript-eslint/no-require-imports */
    ;(
      require('../services/contextCollapse/persist.js') as typeof import('../services/contextCollapse/persist.js')
    ).restoreFromEntries(
      result.contextCollapseCommits ?? [],
      result.contextCollapseSnapshot,
    )
    /* eslint-enable @typescript-eslint/no-require-imports */
  }

  // Restore TodoWrite state from transcript (SDK/non-interactive only).
  // Interactive mode uses file-backed v2 tasks, so AppState.todos is unused there.
  if (!isTodoV2Enabled() && result.messages && result.messages.length > 0) {
    const todos = extractTodosFromTranscript(result.messages)
    if (todos.length > 0) {
      const agentId = getSessionId()
      setAppState(prev => ({
        ...prev,
        todos: { ...prev.todos, [agentId]: todos },
      }))
    }
  }
}

/**
 * Compute restored attribution state from log snapshots.