import type {CodeKeywordDefinition} from "../../types"
import type KeywordCxt from "../../compile/context"
import {_, getProperty, Code} from "../../compile/codegen"
import N from "../../compile/names"
import {SchemaEnv, compileSchema} from "../../compile"
import {getValidate} from "../core/ref"

const def: CodeKeywordDefinition = {
  keyword: "$dynamicAnchor",
  schemaType: "string",
  code: (cxt) => dynamicAnchor(cxt, cxt.schema),
}

export function dynamicAnchor(cxt: KeywordCxt, anchor: string): void {
  const {gen, it} = cxt
  it.schemaEnv.root.dynamicAnchors[anchor] = true
  const v = _`${N.dynamicAnchors}${getProperty(anchor)}`
  const validate = it.errSchemaPath === "#" ? it.validateName : _getValidate(cxt)
  gen.if(_`!${v}`, () => gen.assign(v, validate))
}

function _getValidate(cxt: KeywordCxt): Code {
  const {schemaEnv, schema, self} = cxt.it
  const {root, baseId, localRefs, meta} = schemaEnv.root
  const sch = new SchemaEnv({schema, root, baseId, localRefs, meta})
  compileSchema.call(self, sch)
  return getValidate(cxt, sch)
}

export default def