“use strict”;

Object.defineProperty(exports, “__esModule”, {

value: true

}); exports.default = void 0;

function _assert() {

const data = _interopRequireDefault(require("assert"));

_assert = function () {
  return data;
};

return data;

}

function t() {

const data = _interopRequireWildcard(require("@babel/types"));

t = function () {
  return data;
};

return data;

}

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj = obj; } } } } newObj.default = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

class ImportBuilder {

constructor(importedSource, scope, hub) {
  this._statements = [];
  this._resultName = null;
  this._scope = null;
  this._hub = null;
  this._scope = scope;
  this._hub = hub;
  this._importedSource = importedSource;
}

done() {
  return {
    statements: this._statements,
    resultName: this._resultName
  };
}

import() {
  this._statements.push(t().importDeclaration([], t().stringLiteral(this._importedSource)));

  return this;
}

require() {
  this._statements.push(t().expressionStatement(t().callExpression(t().identifier("require"), [t().stringLiteral(this._importedSource)])));

  return this;
}

namespace(name = "namespace") {
  name = this._scope.generateUidIdentifier(name);
  const statement = this._statements[this._statements.length - 1];
  (0, _assert().default)(statement.type === "ImportDeclaration");
  (0, _assert().default)(statement.specifiers.length === 0);
  statement.specifiers = [t().importNamespaceSpecifier(name)];
  this._resultName = t().cloneNode(name);
  return this;
}

default(name) {
  name = this._scope.generateUidIdentifier(name);
  const statement = this._statements[this._statements.length - 1];
  (0, _assert().default)(statement.type === "ImportDeclaration");
  (0, _assert().default)(statement.specifiers.length === 0);
  statement.specifiers = [t().importDefaultSpecifier(name)];
  this._resultName = t().cloneNode(name);
  return this;
}

named(name, importName) {
  if (importName === "default") return this.default(name);
  name = this._scope.generateUidIdentifier(name);
  const statement = this._statements[this._statements.length - 1];
  (0, _assert().default)(statement.type === "ImportDeclaration");
  (0, _assert().default)(statement.specifiers.length === 0);
  statement.specifiers = [t().importSpecifier(name, t().identifier(importName))];
  this._resultName = t().cloneNode(name);
  return this;
}

var(name) {
  name = this._scope.generateUidIdentifier(name);
  let statement = this._statements[this._statements.length - 1];

  if (statement.type !== "ExpressionStatement") {
    (0, _assert().default)(this._resultName);
    statement = t().expressionStatement(this._resultName);

    this._statements.push(statement);
  }

  this._statements[this._statements.length - 1] = t().variableDeclaration("var", [t().variableDeclarator(name, statement.expression)]);
  this._resultName = t().cloneNode(name);
  return this;
}

defaultInterop() {
  return this._interop(this._hub.addHelper("interopRequireDefault"));
}

wildcardInterop() {
  return this._interop(this._hub.addHelper("interopRequireWildcard"));
}

_interop(callee) {
  const statement = this._statements[this._statements.length - 1];

  if (statement.type === "ExpressionStatement") {
    statement.expression = t().callExpression(callee, [statement.expression]);
  } else if (statement.type === "VariableDeclaration") {
    (0, _assert().default)(statement.declarations.length === 1);
    statement.declarations[0].init = t().callExpression(callee, [statement.declarations[0].init]);
  } else {
    _assert().default.fail("Unexpected type.");
  }

  return this;
}

prop(name) {
  const statement = this._statements[this._statements.length - 1];

  if (statement.type === "ExpressionStatement") {
    statement.expression = t().memberExpression(statement.expression, t().identifier(name));
  } else if (statement.type === "VariableDeclaration") {
    (0, _assert().default)(statement.declarations.length === 1);
    statement.declarations[0].init = t().memberExpression(statement.declarations[0].init, t().identifier(name));
  } else {
    _assert().default.fail("Unexpected type:" + statement.type);
  }

  return this;
}

read(name) {
  this._resultName = t().memberExpression(this._resultName, t().identifier(name));
}

}

exports.default = ImportBuilder;