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'use strict';
const cleanPositionalOperators = require('../schema/cleanPositionalOperators');const handleTimestampOption = require('../schema/handleTimestampOption');
module.exports = applyTimestampsToChildren;
/*! * ignore */
function applyTimestampsToChildren(now, update, schema) {  if (update == null) {    return;  }
  const keys = Object.keys(update);  const hasDollarKey = keys.some(key => key[0] === '$');
  if (hasDollarKey) {    if (update.$push) {      _applyTimestampToUpdateOperator(update.$push);    }    if (update.$addToSet) {      _applyTimestampToUpdateOperator(update.$addToSet);    }    if (update.$set != null) {      const keys = Object.keys(update.$set);      for (const key of keys) {        applyTimestampsToUpdateKey(schema, key, update.$set, now);      }    }    if (update.$setOnInsert != null) {      const keys = Object.keys(update.$setOnInsert);      for (const key of keys) {        applyTimestampsToUpdateKey(schema, key, update.$setOnInsert, now);      }    }  }
  const updateKeys = Object.keys(update).filter(key => key[0] !== '$');  for (const key of updateKeys) {    applyTimestampsToUpdateKey(schema, key, update, now);  }
  function _applyTimestampToUpdateOperator(op) {    for (const key of Object.keys(op)) {      const $path = schema.path(key.replace(/\.\$\./i, '.').replace(/.\$$/, ''));      if (op[key] &&          $path &&          $path.$isMongooseDocumentArray &&          $path.schema.options.timestamps) {        const timestamps = $path.schema.options.timestamps;        const createdAt = handleTimestampOption(timestamps, 'createdAt');        const updatedAt = handleTimestampOption(timestamps, 'updatedAt');        if (op[key].$each) {          op[key].$each.forEach(function(subdoc) {            if (updatedAt != null) {              subdoc[updatedAt] = now;            }            if (createdAt != null) {              subdoc[createdAt] = now;            }
            applyTimestampsToChildren(now, subdoc, $path.schema);          });        } else {          if (updatedAt != null) {            op[key][updatedAt] = now;          }          if (createdAt != null) {            op[key][createdAt] = now;          }
          applyTimestampsToChildren(now, op[key], $path.schema);        }      }    }  }}
function applyTimestampsToDocumentArray(arr, schematype, now) {  const timestamps = schematype.schema.options.timestamps;
  const len = arr.length;
  if (!timestamps) {    for (let i = 0; i < len; ++i) {      applyTimestampsToChildren(now, arr[i], schematype.schema);    }    return;  }
  const createdAt = handleTimestampOption(timestamps, 'createdAt');  const updatedAt = handleTimestampOption(timestamps, 'updatedAt');  for (let i = 0; i < len; ++i) {    if (updatedAt != null) {      arr[i][updatedAt] = now;    }    if (createdAt != null) {      arr[i][createdAt] = now;    }
    applyTimestampsToChildren(now, arr[i], schematype.schema);  }}
function applyTimestampsToSingleNested(subdoc, schematype, now) {  const timestamps = schematype.schema.options.timestamps;  if (!timestamps) {    applyTimestampsToChildren(now, subdoc, schematype.schema);    return;  }
  const createdAt = handleTimestampOption(timestamps, 'createdAt');  const updatedAt = handleTimestampOption(timestamps, 'updatedAt');  if (updatedAt != null) {    subdoc[updatedAt] = now;  }  if (createdAt != null) {    subdoc[createdAt] = now;  }
  applyTimestampsToChildren(now, subdoc, schematype.schema);}
function applyTimestampsToUpdateKey(schema, key, update, now) {  // Replace positional operator `$` and array filters `$[]` and `$[.*]`  const keyToSearch = cleanPositionalOperators(key);  const path = schema.path(keyToSearch);  if (!path) {    return;  }
  const parentSchemaTypes = [];  const pieces = keyToSearch.split('.');  for (let i = pieces.length - 1; i > 0; --i) {    const s = schema.path(pieces.slice(0, i).join('.'));    if (s != null &&      (s.$isMongooseDocumentArray || s.$isSingleNested)) {      parentSchemaTypes.push({ parentPath: key.split('.').slice(0, i).join('.'), parentSchemaType: s });    }  }
  if (Array.isArray(update[key]) && path.$isMongooseDocumentArray) {    applyTimestampsToDocumentArray(update[key], path, now);  } else if (update[key] && path.$isSingleNested) {    applyTimestampsToSingleNested(update[key], path, now);  } else if (parentSchemaTypes.length > 0) {    for (const item of parentSchemaTypes) {      const parentPath = item.parentPath;      const parentSchemaType = item.parentSchemaType;      const timestamps = parentSchemaType.schema.options.timestamps;      const updatedAt = handleTimestampOption(timestamps, 'updatedAt');
      if (!timestamps || updatedAt == null) {        continue;      }
      if (parentSchemaType.$isSingleNested) {        // Single nested is easy        update[parentPath + '.' + updatedAt] = now;      } else if (parentSchemaType.$isMongooseDocumentArray) {        let childPath = key.substring(parentPath.length + 1);
        if (/^\d+$/.test(childPath)) {          update[parentPath + '.' + childPath][updatedAt] = now;          continue;        }
        const firstDot = childPath.indexOf('.');        childPath = firstDot !== -1 ? childPath.substring(0, firstDot) : childPath;
        update[parentPath + '.' + childPath + '.' + updatedAt] = now;      }    }  } else if (path.schema != null && path.schema != schema && update[key]) {    const timestamps = path.schema.options.timestamps;    const createdAt = handleTimestampOption(timestamps, 'createdAt');    const updatedAt = handleTimestampOption(timestamps, 'updatedAt');
    if (!timestamps) {      return;    }
    if (updatedAt != null) {      update[key][updatedAt] = now;    }    if (createdAt != null) {      update[key][createdAt] = now;    }  }}