import { readFileSync, existsSync } from 'fs';
import { resolve } from 'path';
import yaml from 'js-yaml';
export interface ModulesConfig {
pattern?: string;
shared_module_path?: string;
prefer_shared_modules?: boolean;
}
export interface NamingConfig {
resource_format?: string;
variable_case?: 'snake_case' | 'camelCase';
output_case?: 'snake_case' | 'camelCase';
}
export interface TaggingConfig {
required_tags?: string[];
defaults?: Record<string, string>;
}
export interface ProviderConfig {
name: string;
version_constraint?: string;
}
export interface ForbiddenPattern {
description: string;
match: string;
}
export interface ProvidersConfig {
allowed?: ProviderConfig[];
forbidden_patterns?: ForbiddenPattern[];
}
export interface SecurityDefaultsConfig {
s3_bucket?: Record<string, boolean | string | number>;
rds?: Record<string, boolean | string | number>;
[key: string]: Record<string, boolean | string | number> | undefined;
}
export interface TerraformStyleConfig {
modules?: ModulesConfig;
naming?: NamingConfig;
tagging?: TaggingConfig;
providers?: ProvidersConfig;
security_defaults?: SecurityDefaultsConfig;
examples?: Record<string, string>;
}
export function loadConfig(): TerraformStyleConfig {
const configPaths = [
process.env.TERRAFORM_STYLE_PATH,
resolve(process.cwd(), 'terraform-style.yaml'),
resolve(process.cwd(), 'terraform-style.yml'),
].filter((p): p is string => !!p);
for (const configPath of configPaths) {
if (existsSync(configPath)) {
try {
const fileContent = readFileSync(configPath, 'utf8');
const config = yaml.load(fileContent) as TerraformStyleConfig;
if (!config || typeof config !== 'object') {
throw new Error(`Invalid config format in ${configPath}`);
}
return config;
} catch (error) {
if (error instanceof Error) {
throw new Error(`Failed to load config from ${configPath}: ${error.message}`);
}
throw error;
}
}
}
throw new Error(
'No terraform-style.yaml found. Please create one in your project root or set TERRAFORM_STYLE_PATH env var.'
);
}
export function getExamples(config: TerraformStyleConfig): Record<string, string> {
return config.examples || {};
}
