@nozbe/watermelondb/Schema/migrations/getSyncChanges/index.js

Build powerful React Native and React web apps that scale from hundreds to tens of thousands of records and remain fast

"use strict";

exports.__esModule = true;
exports.default = getSyncChanges;
var _fp = require("../../../utils/fp");
var _index = require("../../index");
var _stepsForMigration = require("../stepsForMigration");
var _common = require("../../../utils/common");
function getSyncChanges(migrations, fromVersion, toVersion) {
  var steps = (0, _stepsForMigration.stepsForMigration)({
    migrations: migrations,
    fromVersion: fromVersion,
    toVersion: toVersion
  });
  (0, _common.invariant)(steps, 'Necessary range of migrations for sync is not available');
  (0, _common.invariant)(toVersion === migrations.maxVersion, 'getSyncChanges toVersion should be equal to maxVersion of migrations');
  if (fromVersion === toVersion) {
    return null;
  }
  steps.forEach(function (step) {
    (0, _common.invariant)(['create_table', 'add_columns', 'sql'].includes(step.type), "Unknown migration step type ".concat(step.type, ". Can not perform migration sync. This most likely means your migrations are defined incorrectly. It could also be a WatermelonDB bug."));
  });

  // $FlowFixMe
  var createTableSteps = steps.filter(function (step) {
    return 'create_table' === step.type;
  });
  var createdTables = createTableSteps.map(function (step) {
    return step.schema.name;
  });

  // $FlowFixMe
  var addColumnSteps = steps.filter(function (step) {
    return 'add_columns' === step.type;
  });
  var allAddedColumns = addColumnSteps.filter(function (step) {
    return !createdTables.includes(step.table);
  }).map(function ({
    table: table,
    columns: columns
  }) {
    return columns.map(function ({
      name: name
    }) {
      return {
        table: table,
        name: name
      };
    });
  });
  var columnsByTable = (0, _fp.pipe)(_fp.unnest, (0, _fp.groupBy)(function ({
    table: table
  }) {
    return table;
  }), _fp.toPairs)(allAddedColumns);
  var addedColumns = columnsByTable.map(function ([table, columnDefs]) {
    return {
      table: (0, _index.tableName)(table),
      columns: (0, _fp.unique)(columnDefs.map(function ({
        name: name
      }) {
        return name;
      }))
    };
  });
  return {
    from: fromVersion,
    tables: (0, _fp.unique)(createdTables),
    columns: addedColumns
  };
}