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import { singularize } from './utils/string-utils';
import {
calculateImportDepthFromEdges,
detectGraphCycles,
getTransitiveDependenciesFromEdges,
} from './utils/dependency-graph-utils';
import type { DependencyGraph, DependencyNode } from './types';
import { buildCoUsageMatrix } from './semantic/co-usage';
import { buildTypeGraph } from './semantic/type-graph';
import { inferDomainFromSemantics } from './semantic/domain-inference';
import { extractExportsWithAST } from './ast-utils';
import { join, dirname, normalize } from 'path';
/**
* Resolve an import source to its absolute path considering the importing file's location
*/
function resolveImport(
source: string,
importingFile: string,
allFiles: Set<string>
): string | null {
// If it's not a relative import, we treat it as an external dependency for now
// (unless it's an absolute path that exists in our set)
if (!source.startsWith('.') && !source.startsWith('/')) {
// Handle monorepo package imports (@aiready/*)
Iif (source.startsWith('@aiready/')) {
const pkgName = source.split('/')[1];
const possiblePaths = [
// Standard src/index.ts entry point for our packages
join('packages', pkgName, 'src', 'index.ts'),
join('packages', pkgName, 'src', 'index.tsx'),
// Support for sub-exports if needed (e.g. @aiready/core/client)
join(
'packages',
pkgName,
'src',
`${source.split('/').slice(2).join('/') || 'index'}.ts`
),
];
for (const p of possiblePaths) {
// Find the absolute path that ends with this relative path
const absolutePkgPath = Array.from(allFiles).find((f) =>
f.endsWith(normalize(p))
);
if (absolutePkgPath) return absolutePkgPath;
}
}
if (allFiles.has(source)) return source;
return null;
}
const dir = dirname(importingFile);
const absolutePath = normalize(join(dir, source));
// Try exact match
Iif (allFiles.has(absolutePath)) return absolutePath;
// Try common extensions
const extensions = ['.ts', '.tsx', '.js', '.jsx'];
for (const ext of extensions) {
const withExt = absolutePath + ext;
if (allFiles.has(withExt)) return withExt;
}
// Try directory index
for (const ext of extensions) {
const indexFile = normalize(join(absolutePath, `index${ext}`));
Iif (allFiles.has(indexFile)) return indexFile;
}
return null;
}
/**
* Auto-detect domain keywords from workspace folder structure.
*
* @param files - Array of file contents to analyze for folder patterns.
* @returns Array of singularized domain keywords.
*/
export function extractDomainKeywordsFromPaths(files: FileContent[]): string[] {
const folderNames = new Set<string>();
for (const { file } of files) {
const segments = file.split('/');
const skipFolders = new Set([
'src',
'lib',
'dist',
'build',
'node_modules',
'test',
'tests',
'__tests__',
'spec',
'e2e',
'scripts',
'components',
'utils',
'helpers',
'util',
'helper',
'api',
'apis',
]);
for (const segment of segments) {
const normalized = segment.toLowerCase();
if (
normalized &&
!skipFolders.has(normalized) &&
!normalized.includes('.')
) {
folderNames.add(singularize(normalized));
}
}
}
return Array.from(folderNames);
}
/**
* Build a dependency graph from file contents, resolving imports and extracting metadata.
*
* @param files - Array of file contents to process.
* @param options - Optional configuration for domain detection.
* @returns Complete dependency graph with nodes, edges, and semantic matrices.
*/
export async function buildDependencyGraph(
files: FileContent[],
options?: { domainKeywords?: string[] }
): Promise<DependencyGraph> {
const nodes = new Map<string, DependencyNode>();
const edges = new Map<string, Set<string>>();
const autoDetectedKeywords =
options?.domainKeywords ?? extractDomainKeywordsFromPaths(files);
const allFilePaths = new Set(files.map((f) => f.file));
for (const { file, content } of files) {
// 1. Get high-fidelity AST-based imports & exports
const { imports: astImports } = await parseFileExports(content, file);
// 2. Resolve imports to absolute paths in the graph
const resolvedImports = astImports
.map((i) => resolveImport(i.source, file, allFilePaths))
.filter((path): path is string => path !== null);
const importSources = astImports.map((i) => i.source);
// 3. Wrap with platform-specific metadata (v0.11+)
const exports = await extractExportsWithAST(
content,
file,
{ domainKeywords: autoDetectedKeywords },
importSources
);
const tokenCost = estimateTokens(content);
const linesOfCode = content.split('\n').length;
nodes.set(file, {
file,
imports: importSources,
exports,
tokenCost,
linesOfCode,
});
edges.set(file, new Set(resolvedImports));
}
const graph: DependencyGraph = { nodes, edges };
const coUsageMatrix = buildCoUsageMatrix(graph);
const typeGraph = buildTypeGraph(graph);
graph.coUsageMatrix = coUsageMatrix;
graph.typeGraph = typeGraph;
for (const [file, node] of nodes) {
for (const exp of node.exports) {
const semanticAssignments = inferDomainFromSemantics(
file,
exp.name,
graph,
coUsageMatrix,
typeGraph,
exp.typeReferences
);
exp.domains = semanticAssignments;
Iif (semanticAssignments.length > 0) {
exp.inferredDomain = semanticAssignments[0].domain;
}
}
}
return graph;
}
/**
* Calculate the maximum depth of the import tree for a specific file.
*
* @param file - File path to start depth calculation from.
* @param graph - The dependency graph.
* @param visited - Optional set to track visited nodes during traversal.
* @param depth - Current recursion depth.
* @returns Maximum depth of the import chain.
*/
export function calculateImportDepth(
file: string,
graph: DependencyGraph,
visited = new Set<string>(),
depth = 0
): number {
return calculateImportDepthFromEdges(file, graph.edges, visited, depth);
}
/**
* Retrieve all transitive dependencies for a specific file.
*
* @param file - File path to analyze.
* @param graph - The dependency graph.
* @param visited - Optional set to track visited nodes.
* @returns Array of all reachable file paths.
*/
export function getTransitiveDependencies(
file: string,
graph: DependencyGraph,
visited = new Set<string>()
): string[] {
return getTransitiveDependenciesFromEdges(file, graph.edges, visited);
}
/**
* Calculate total context budget (tokens needed to understand this file and its dependencies).
*
* @param file - File path to calculate budget for.
* @param graph - The dependency graph.
* @returns Total token count including recursive dependencies.
*/
export function calculateContextBudget(
file: string,
graph: DependencyGraph
): number {
const node = graph.nodes.get(file);
Iif (!node) return 0;
let totalTokens = node.tokenCost;
const deps = getTransitiveDependencies(file, graph);
for (const dep of deps) {
const depNode = graph.nodes.get(dep);
Eif (depNode) {
totalTokens += depNode.tokenCost;
}
}
return totalTokens;
}
/**
* Detect circular dependencies (cycles) within the dependency graph.
*
* @param graph - The dependency graph to scan.
* @returns Array of dependency cycles (each cycle is an array of file paths).
*/
export function detectCircularDependencies(graph: DependencyGraph): string[][] {
return detectGraphCycles(graph.edges);
}
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