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// Copyright (c) 2020 Jozty. All rights reserved. MIT license.
import { getPath, Path } from './paths.ts';import { tail } from './tail.ts';import { assoc } from './assoc.ts';import has from './utils/has.ts';import { isArray, isInteger, isNotUndefinedOrNull } from './utils/is.ts';import curryN from './utils/curry_n.ts';import type { ObjRec, PH } from './utils/types.ts';
// @typestype AssocPath_1 = (path: Path) => ObjRec;
type AssocPath_2 = (val: unknown) => ObjRec;
type AssocPath_3 = (obj: ObjRec) => ObjRec;
type AssocPath_2_3 =  & ((val: unknown) => AssocPath_3)  & ((val: PH, obj: ObjRec) => AssocPath_2)  & ((val: unknown, obj: ObjRec) => ObjRec);
type AssocPath_1_3 =  & ((path: Path) => AssocPath_3)  & ((path: PH, obj: ObjRec) => AssocPath_1)  & ((path: Path, obj: ObjRec) => ObjRec);
type AssocPath_1_2 =  & ((path: Path) => AssocPath_2)  & ((path: PH, val: unknown) => AssocPath_1)  & ((path: Path, val: unknown) => ObjRec);
type AssocPath =  & ((path: Path) => AssocPath_2_3)  & ((path: PH, val: unknown) => AssocPath_1_3)  & ((path: PH, val: PH, obj: ObjRec) => AssocPath_1_2)  & ((path: Path, val: unknown) => AssocPath_3)  & ((path: Path, val: PH, obj: ObjRec) => AssocPath_2)  & ((path: PH, val: unknown, obj: ObjRec) => AssocPath_1)  & ((path: Path, val: unknown, obj: ObjRec) => ObjRec);
function _assocPath(path: Path, val: unknown, obj: ObjRec) {  if (path.length === 0) return val;  const p = getPath(path);
  const prop = p[0];
  if (p.length > 1) {    const child = isNotUndefinedOrNull(obj) && has(obj, prop)      ? obj[prop]      : isInteger(prop)      ? []      : {};
    val = _assocPath(tail(p) as Path, val, child);  }
  if (isInteger(prop) && isArray(obj)) {    const result: unknown[] = [...obj];    result[prop] = val;    return result;  }
  return assoc(prop, val, obj);}
/** * Makes a shallow clone of an object, setting or overriding the nodes required * to create the given path, and placing the specific value at the tail end of * that path. Note that this copies and flattens prototype properties onto the * new object as well. All non-primitive properties are copied by reference. * *      Fae.assocPath(['a', 'b', 'c'], 42, {a: {b: {c: 0}}}); //=> {a: {b: {c: 42}}} *      Fae.assocPath(['a', 'b', 'c'], 42, {a: 5}); //=> {a: {b: {c: 42}}} */export const assocPath: AssocPath = curryN(3, _assocPath);