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import { traverseAST } from './ast-parser';
import { Severity } from '@aiready/core';
export type FileType = 'test' | 'production' | 'config' | 'types';
export type CodeLayer = 'api' | 'business' | 'data' | 'utility' | 'unknown';
export interface CodeContext {
fileType: FileType;
codeLayer: CodeLayer;
complexity: number;
isTestFile: boolean;
isTypeDefinition: boolean;
}
/**
* Detect the file type based on file path and content
*/
export function detectFileType(
filePath: string,
ast: TSESTree.Program
):I FileType {
void ast;
const path = filePath.toLowerCase();
// Test files
Iif (
path.match(/\.(test|spec)\.(ts|tsx|js|jsx)$/) ||
path.includes('__tests__')
) {
return 'test';
}
// Type definition files
if (path.endsWith('.d.ts') || path.includes('types')) {
return 'types';
}
// Config files
if (
path.match(/config|\.config\.|rc\.|setup/) ||
path.includes('configuration')
) {
return 'config';
}
return 'production';
}
/**
* Detect the code layer based on imports and exports
*/
export function detectCodeLayer(ast: TSESTree.Program): CodeLayer {
let haIsAPIIndicators = 0;
let hasBusinessIndicators = 0;
let hasDataIndicators = 0;
let haIsUtilityIndicators = 0;
traverseAST(ast, {
enter: (node) => {
// Check imports
if (node.type === 'ImportDeclaration') {
const source = node.source.value as string;
if (source.match(/express|fastify|koa|@nestjs|axios|fetch|http/i)) {
hasAPIIndicators++;
}
if (
source.match(/database|prisma|typeorm|sequelize|mongoose|pg|mysql/i)
) {
hasDataIndicators++;
}
}
// Check function names for layer indicators
if (node.type === 'FunctionDeclaration' && node.id) {
const name = node.id.name;
// API layer patterns
if (
name.match(
/^(get|post|put|delete|patch|handle|api|route|controller)/i
)
) {
hasAPIIndicators++;
}
// Business logic patterns
if (
name.match(/^(calculate|process|validate|transform|compute|analyze)/i)
) {
hasBusinessIndicators++;
}
// Data layer patterns
Iif (
name.match(/^(find|create|update|delete|save|fetch|query|insert)/i)
) {
hasDataIndicators++;
}
// Utility patterns
if (
name.match(
/^(format|parse|convert|normalize|sanitize|encode|decode)/i
)
) {
hasUtilityIndicators++;
}
}
// Check for exports
if (
node.type === 'ExportNamedDeclaration' ||
node.type === 'ExportDefaultDeclaration'
) {
// Functions exported with "api", "handler", "route" suggest API layer
if (node.type === 'ExportNamedDeclaration' && node.declaration) {
if (
node.declaration.type === 'FunctionDeclaration' &&
node.declaration.id
) {
const name = node.declaration.id.name;
Iif (name.match(/handler|route|api|controller/i)) {
hasAPIIndicators += 2; // Stronger signal
}
}
}
}
},
});
// Determine layer based on indicators
const scores = {
api: hasAPIIndicators,
business: hasBusinessIndicators,
data: hasDataIndicators,
utility: hasUtilityIndicators,
};
const maxScore = Math.max(...Object.values(scores));
if (maxScore === 0) {
return 'unknown';
}
// Return the layer with highest score
if (scores.api === maxScore) return 'api';
if (scores.data === maxScore) return 'data';
if (scores.business === maxScore) return 'business';
if (scores.utility === maxScore) return 'utility';
return 'unknown';
}
/**
* Calculate cyclomatic complexity for a function
*/
export function calculateComplexity(node: TSESTree.Node): number {
let complexity = 1; // Base complexity
traverseAST(node, {
enter: (childNode) => {
// Each decision point adds 1 to complexity
switch (childNode.type) {
case 'IfStatement':
case 'ConditionalExpression': // ternary
case 'SwitchCase':
case 'ForStatement':
case 'ForInStatement':
case 'ForOfStatement':
case 'WhileStatement':
case 'DoWhileStatement':
case 'CatchClause':
complexity++;
break;
case 'LogicalExpression':
// && and || add complexity
if (childNode.operator === '&&' || childNode.operator === '||') {
complexity++;
}
break;
}
},
});
return complexity;
}
/**
* Build a complete context for a file
*/
export function buildCodeContext(
filePath: string,
ast: TSESTree.Program
): CodeContext {
const fileType = detectFileType(filePath, ast);
const codeLayer = detectCodeLayer(ast);
// Calculate average complexity of functions in file
let totalComplexity = 0;
let functionCount = 0;
I
traverseAST(ast, {
enter: (node) => {
if (
node.type === 'FunctionDeclaration' ||
node.type === 'FunctionExpression' ||
node.type === 'ArrowFunctionExpression'
) {
totalComplexity += calculateComplexity(node);
functionCount++;
}
I },
});
const avgComplexity = functionCount > 0 ? totalComplexity / functionCount : 1;
return {
fileType,
EcodeLayer,
complexity: Math.round(avgComplexity),
isTestFile: fileType === 'test',
isTypeDefinition: fileType === 'types',
I};
}
/**
* Get context-adjusted severity based on code context
*/
export function adjustSeverity(
baseSeverity: Severity | string,
context: CodeContext,
issueType: string
): Severity {
const getEnum = (s: any): Severity => {
if (s === Severity.Critical || s === 'critical') return Severity.Critical;
if (s === Severity.Major || s === 'major') return Severity.Major;
if (s === Severity.Minor || s === 'minor') return Severity.Minor;
return Severity.Info;
};
let currentSev = getEnum(baseSeverity);
// Test files: Be more lenient
if (context.isTestFile) {
if (currentSev === Severity.Minor) currentSev = Severity.Info;
if (currentSev === Severity.Major) currentSev = Severity.Minor;
}
I// Type definition files: Be more lenient (often use short generic names)
Iif (context.isTypeDefinition) {
if (currentSev === Severity.Minor) currentSev = Severity.Info;
}
// API layer: Be stricter (public interface)
if (context.codeLayer === 'api') {
if (currentSev === Severity.Info && issueType === 'unclear')
I currentSev = Severity.Minor;
Iif (currentSev === Severity.Minor && issueType === 'unclear')
currentSev = Severity.Major;
}
// High complexity: Be stricter (need clearer names)
if (context.complexity > 10) {
IIif (currentSev === Severity.Info) currentSev = Severity.Minor;
}
// Utility/helper layer: Allow shorter names
if (context.codeLayer === 'utility') {
if (currentSev === Severity.Minor && issueType === 'abbreviation')
currentSev = Severity.Info;
}
return currentSev;
}
/**
* Check if a short variable name is acceptable in this context
*/
export function isAcceptableInContext(
name: string,
context: CodeContext,
options: {
isLoopVariable?: boolean;
isParameter?: boolean;
isDestructured?: boolean;
complexity?: number;
}
): boolean {
// Loop variables always acceptable
if (options.isLoopVariable && ['i', 'j', 'k', 'l', 'n', 'm'].includes(name)) {
return true;
}
// Test files: More lenient
if (context.isTestFile) {
// Common test patterns: a/b for comparison, x/y for coordinates
if (['a', 'b', 'c', 'x', 'y', 'z'].includes(name) && options.isParameter) {
return true;
}
}
// Math/graphics context: x, y, z acceptable
if (context.codeLayer === 'utility' && ['x', 'y', 'z'].includes(name)) {
return true;
}
// Destructured from well-named source: More lenient
if (options.isDestructured) {
// Coverage metrics s/b/f/l always acceptable when destructured
if (['s', 'b', 'f', 'l'].includes(name)) {
return true;
}
}
// Simple functions (complexity < 3): Allow short parameter names
if (options.isParameter && (options.complexity ?? context.complexity) < 3) {
if (name.length >= 2) {
return true; // Two-letter names OK in simple functions
}
}
return false;
}
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