import Ajv from "ajv/dist/2020.js";
import { injectable } from "@codemation/core";
import type { JsonValue } from "@codemation/core";

const ajv = new Ajv({ strict: false });

@injectable()
export class DecisionSchemaValidator {
  validate(args: { schemaJson: string; value: JsonValue }): { valid: true } | { valid: false; message: string } {
    const schema = JSON.parse(args.schemaJson) as object;
    const fn = ajv.compile(schema);
    if (fn(args.value)) {
      return { valid: true };
    }
    return { valid: false, message: ajv.errorsText(fn.errors) };
  }
}