#!/usr/bin/env node
const { getPathValue } = require('./dataPath.cjs');
function normalizeExpression(expression) {
const trimmed = String(expression || '').trim();
if (!trimmed) {
return { path: '', optional: false };
}
if (trimmed.startsWith('?')) {
return { path: trimmed.slice(1).trim(), optional: true };
}
return { path: trimmed, optional: false };
}
function resolveExpression(expression, context, { missing = 'error' } = {}) {
const { path, optional } = normalizeExpression(expression);
if (!path) {
return { value: '', found: false };
}
try {
const value = getPathValue(context, path, { required: true });
return { value, found: true };
} catch (error) {
if (optional || missing === 'empty') {
return { value: '', found: false };
}
if (missing === 'null') {
return { value: null, found: false };
}
if (missing === 'undefined') {
return { value: undefined, found: false };
}
throw error;
}
}
function stringifyResolved(value) {
if (value === null || value === undefined) {
return '';
}
if (typeof value === 'string') {
return value;
}
if (typeof value === 'number' || typeof value === 'boolean') {
return String(value);
}
return JSON.stringify(value);
}
function resolveTemplateString(template, context, options = {}) {
const raw = String(template);
const tokenRegex = /{{\s*([^}]+)\s*}}/g;
const exactMatch = raw.match(/^{{\s*([^}]+)\s*}}$/);
if (exactMatch) {
const { value } = resolveExpression(exactMatch[1], context, options);
return value;
}
return raw.replace(tokenRegex, (_, expr) => {
const { value } = resolveExpression(expr, context, options);
return stringifyResolved(value);
});
}
function resolveTemplates(value, context, options = {}) {
if (Array.isArray(value)) {
return value.map((item) => resolveTemplates(item, context, options));
}
if (value && typeof value === 'object') {
const resolved = {};
for (const [key, entry] of Object.entries(value)) {
resolved[key] = resolveTemplates(entry, context, options);
}
return resolved;
}
if (typeof value === 'string') {
return resolveTemplateString(value, context, options);
}
return value;
}
module.exports = {
resolveTemplates,
resolveTemplateString,
};
