@syntropysoft/praetorian
Version:
Praetorian CLI – A universal multi-environment configuration validator for DevSecOps teams. Validate, compare, and secure YAML/ENV files with ease.
115 lines • 3.63 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseJsonContent = exports.JsonFileAdapter = void 0;
const AbstractFileAdapter_1 = require("../base/AbstractFileAdapter");
/**
* JSON File Adapter - Functional Programming
*
* Single Responsibility: Parse JSON configuration files only
* Pure functions, no state, no side effects
*/
class JsonFileAdapter extends AbstractFileAdapter_1.AbstractFileAdapter {
canHandle(filePath) {
// Guard clause: no file path
if (!filePath || typeof filePath !== 'string') {
return false;
}
return isJsonFile(filePath);
}
async read(filePath) {
// Guard clause: no file path
if (!filePath || typeof filePath !== 'string') {
throw new Error('File path is required');
}
this.validateFileExists(filePath);
try {
const content = await this.readFileContent(filePath);
return (0, exports.parseJsonContent)(content, filePath);
}
catch (error) {
throw new Error(`Failed to parse JSON file ${filePath}: ${error instanceof Error ? error.message : 'Unknown error'}`);
}
}
getFormat() {
return 'json';
}
getSupportedExtensions() {
return ['.json'];
}
}
exports.JsonFileAdapter = JsonFileAdapter;
/**
* Pure function to check if file is JSON
*/
const isJsonFile = (filePath) => {
// Guard clause: no file path
if (!filePath) {
return false;
}
return filePath.endsWith('.json');
};
/**
* Pure function to parse JSON content
*/
const parseJsonContent = (content, filePath) => {
// Guard clause: no content
if (!content || typeof content !== 'string') {
return {};
}
try {
const parsedContent = JSON.parse(content);
return validateJsonContent(parsedContent, filePath);
}
catch (error) {
const errorMessage = getJsonErrorMessage(error, filePath);
throw new Error(errorMessage);
}
};
exports.parseJsonContent = parseJsonContent;
/**
* Pure function to validate JSON content structure
*/
const validateJsonContent = (parsedContent, filePath) => {
// Guard clause: no parsed content
if (parsedContent === null || parsedContent === undefined) {
return {};
}
// Guard clause: not an object
if (typeof parsedContent !== 'object') {
const fileName = filePath ? ` in ${filePath}` : '';
throw new Error(`Invalid JSON content${fileName}: expected object, got ${typeof parsedContent}`);
}
// Guard clause: array instead of object
if (Array.isArray(parsedContent)) {
const fileName = filePath ? ` in ${filePath}` : '';
throw new Error(`Invalid JSON content${fileName}: expected object, got array`);
}
return parsedContent;
};
/**
* Pure function to get JSON error message
*/
const getJsonErrorMessage = (error, filePath) => {
// Guard clause: no error
if (!error) {
return 'Unknown JSON parsing error';
}
const fileName = filePath ? ` in ${filePath}` : '';
// Check if it's a JSON syntax error
if (isJsonSyntaxError(error)) {
return `Invalid JSON syntax${fileName}: ${error.message}`;
}
// Generic error
return `JSON parsing error${fileName}: ${error.message || 'Unknown error'}`;
};
/**
* Pure function to check if error is JSON syntax error
*/
const isJsonSyntaxError = (error) => {
// Guard clause: no error
if (!error) {
return false;
}
return error instanceof SyntaxError;
};
//# sourceMappingURL=JsonFileAdapter.js.map