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import Ajv from "ajv";
import addFormats from "ajv-formats";
import fs from "fs";
import path from "path";
const SchemaPath = path.join(
__dirname,
"..",
"..",
"..",
"assets",
"schemas.json",
);
const schemas = JSON.parse(fs.readFileSync(SchemaPath, { encoding: "utf8" }));
export const ajv = new Ajv({
allErrors: true,
parseDate: true,
allowDate: true,
schemas,
coerceTypes: true,
messages: true,
strict: true,
strictRequired: true,
allowUnionTypes: true,
});
addFormats(ajv);
export function validateSchema<G>(schema: string, data: G): G {
const valid = ajv.validate(schema, normalizeBody(data));
if (!valid) throw ajv.errors;
return data;
}
// Normalizer is introduced to workaround https://github.com/ajv-validator/ajv/issues/1287
// this removes null values as ajv doesn't treat them as undefined
// normalizeBody allows to handle circular structures without issues
// taken from https://github.com/serverless/serverless/blob/master/lib/classes/ConfigSchemaHandler/index.js#L30 (MIT license)
export const normalizeBody = (body: any = {}) => {
const normalizedObjectsSet = new WeakSet();
const normalizeObject = (object: any) => {
if (normalizedObjectsSet.has(object)) return;
normalizedObjectsSet.add(object);
if (Array.isArray(object)) {
for (const [index, value] of object.entries()) {
if (typeof value === "object") normalizeObject(value);
}
} else {
for (const [key, value] of Object.entries(object)) {
if (value == null) {
if (
key === "icon" ||
key === "avatar" ||
key === "banner" ||
key === "splash" ||
key === "discovery_splash"
)
continue;
delete object[key];
} else if (typeof value === "object") {
normalizeObject(value);
}
}
}
};
normalizeObject(body);
return body;
};
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