import { toForwardSlash } from './normalize-path';
/**
 * Detects if a file path represents a subagent based on path structure.
 *
 * Subagents follow the pattern: agent/parent/child/agent.ts or agent/parent/child/route.ts
 * The path structure is currently hardcoded to 4 segments but could be made configurable later.
 *
 * @param filePath - The file path to analyze (can include leading './')
 * @param srcDir - Optional source directory to strip from the path
 * @returns Object with isSubagent flag and parentName if detected
 */
export function detectSubagent(filePath, srcDir) {
    let normalizedPath = filePath;
    // Strip srcDir if provided
    if (srcDir && normalizedPath.startsWith(srcDir)) {
        normalizedPath = normalizedPath.replace(srcDir, '');
    }
    // Normalize path separators for cross-platform compatibility
    normalizedPath = toForwardSlash(normalizedPath);
    // Strip leading './' and split into parts, filtering out empty segments
    const pathParts = normalizedPath.replace(/^\.\//, '').split('/').filter(Boolean);
    // Path structure assumption: ['agent', 'parent', 'child', 'agent.ts' | 'route.ts' | 'route']
    // Currently hardcoded to 4 segments - consider making configurable in the future
    const isSubagent = pathParts.length === 4 && pathParts[0] === 'agent';
    const parentName = isSubagent ? (pathParts[1] ?? null) : null;
    return { isSubagent, parentName };
}
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