import type { DocumentTypeDef, NestedTypeDef, SchemaDef } from './index.js'

export const validateSchema = (schema: SchemaDef): void => {
  Object.values(schema.documentTypeDefMap).forEach((def) => validateDocumentOrObjectDef({ def }))
  Object.values(schema.nestedTypeDefMap).forEach((def) => validateDocumentOrObjectDef({ def }))
}

const validateDocumentOrObjectDef = ({ def }: { def: DocumentTypeDef | NestedTypeDef }): void => {
  // TODO move out this code to a new stackbit extension package
  const stackbitExt = def.extensions.stackbit
  if (stackbitExt?.labelField) {
    const noFieldFoundForLabelField = !def.fieldDefs.some((_) => _.name === stackbitExt.labelField)
    if (noFieldFoundForLabelField) {
      throw new Error(
        `There is no field with the name "${stackbitExt.labelField}" as specified for "labelField" in ${def._tag} with the name "${def.name}"`,
      )
    }
  }
}