import { logger } from "../../../lib/logger";

export async function spreadSchemas(
  schema: any,
  keys: string[],
): Promise<{
  singleAnswerSchema: any;
  multiEntitySchema: any;
}> {
  let singleAnswerSchema = { ...schema, properties: { ...schema.properties } };
  let multiEntitySchema: any = { 
    type: "object", 
    properties: {},
    ...(schema.required ? { required: [] } : {})
  };

  // Helper function to check if a property path exists in schema
  const hasPropertyPath = (schema: any, path: string[]): boolean => {
    let current = schema.properties;
    for (let i = 0; i < path.length; i++) {
      if (!current[path[i]]) return false;
      if (current[path[i]].type === "array" && current[path[i]].items) {
        current = current[path[i]].items.properties;
      } else {
        current = current[path[i]].properties;
      }
    }
    return true;
  };

  // Helper function to get the root property of a dot path
  const getRootProperty = (path: string): string => {
    return path.split('.')[0];
  };

  keys.forEach((key) => {
    const rootProperty = getRootProperty(key);
    if (singleAnswerSchema.properties[rootProperty]) {
      multiEntitySchema.properties[rootProperty] = singleAnswerSchema.properties[rootProperty];
      delete singleAnswerSchema.properties[rootProperty];
      
      // Move required field if it exists
      if (schema.required?.includes(rootProperty)) {
        multiEntitySchema.required.push(rootProperty);
        singleAnswerSchema.required = schema.required.filter((k: string) => k !== rootProperty);
      }
    }
  });

  // Recursively delete empty properties in singleAnswerSchema
  const deleteEmptyProperties = (schema: any) => {
    for (const key in schema.properties) {
      if (
        schema.properties[key].properties &&
        Object.keys(schema.properties[key].properties).length === 0
      ) {
        delete schema.properties[key];
      } else if (schema.properties[key].properties) {
        deleteEmptyProperties(schema.properties[key]);
      }
    }
  };

  deleteEmptyProperties(singleAnswerSchema);
  deleteEmptyProperties(multiEntitySchema);

  // If singleAnswerSchema has no properties left, return an empty object
  if (Object.keys(singleAnswerSchema.properties).length === 0) {
    singleAnswerSchema = {};
  } else if (singleAnswerSchema.required?.length === 0) {
    delete singleAnswerSchema.required;
  }

  if (Object.keys(multiEntitySchema.properties).length === 0) {
    multiEntitySchema = {};
  } else if (multiEntitySchema.required?.length === 0) {
    delete multiEntitySchema.required;
  }

  return {
    singleAnswerSchema,
    multiEntitySchema,
  };
}