import { Types } from "./types";
import WatchJS from "melanke-watchjs";
import * as AlgorithmManagement from "./algorithm";

export const COMMAND_TYPES = Object.freeze({
  function: "function",
  comment: "comment",
  reader: "reader",
  writer: "writer",
  attribution: "attribution",
  iftrue: "iftrue",
  repeatNtimes: "repeatNtimes",
  whiletrue: "whiletrue",
  dowhiletrue: "dowhiletrue",
  switch: "switch",
  switchcase: "switchcase",
  functioncall: "functioncall",
  break: "break",
  return: "return",
});

export const ARITHMETIC_TYPES = Object.freeze({
  plus: "plus",
  minus: "minus",
  multiplication: "multiplication",
  division: "division",
  module: "module",
  none: "none",
});

export const EXPRESSION_ELEMENTS = Object.freeze({
  exp_op_exp: "exp_op_exp",
  op_exp: "op_exp",
  par_exp_par: "par_exp_par",
  start_point: "start_point",
});

export const EXPRESSION_TYPES = Object.freeze({
  exp_conditional: "exp_conditional",
  exp_logic: "exp_logic",
  exp_arithmetic: "exp_arithmetic",
});

export const ARITHMETIC_COMPARISON = Object.freeze({
  greater_than: "greater_than",
  less_than: "less_than",
  equals_to: "equals_to",
  not_equals_to: "not_equals_to",
  greater_than_or_equals_to: "greater_than_or_equals_to",
  less_than_or_equals_to: "less_than_or_equals_to",
});

export const LOGIC_COMPARISON = Object.freeze({
  equals_to: "equals_to",
  not_equals_to: "not_equals_to",
  and: "and",
  or: "or",
  not: "not",
});

export const SYSTEM_FUNCTIONS_CATEGORIES = Object.freeze({
  math: "$mathLib",
  text: "$strLib",
  arrangement: "$arrayLib",
  conversion: "$langLib",
});

export class Variable {
  constructor (
    type,
    name,
    value,
    dimensions = 0,
    is_constant = false,
    rows = 0,
    columns = 0
  ) {
    this.type = type;
    this.name = name;
    this.value = value;
    this.dimensions = dimensions;
    this.is_constant = is_constant;
    this.rows = rows;
    this.columns = columns;
  }
}

export class Function {
  constructor (
    name,
    return_type = Types.VOID,
    return_dimensions = 0,
    parameters_list = [],
    is_main = false,
    is_hidden = false,
    variables_list = [],
    function_comment = null,
    commands = []
  ) {
    this.type = COMMAND_TYPES.function;
    this.name = name;
    this.return_type = return_type;
    this.return_dimensions = return_dimensions;
    this.parameters_list = parameters_list;
    this.is_main = is_main;
    this.is_hidden = is_hidden;
    this.variables_list = variables_list;
    this.function_comment = function_comment;
    this.commands = commands;
  }
}

export class SystemFunction {
  constructor (
    identifier,
    return_type,
    return_dimensions,
    parameters_list,
    function_comment = null,
    category
  ) {
    this.type = COMMAND_TYPES.function;
    this.identifier = identifier;
    this.return_type = return_type;
    this.return_dimensions = return_dimensions;
    this.parameters_list = parameters_list;
    this.function_comment = function_comment;
    this.category = category;
  }
}

export class Comment {
  constructor (comment_text) {
    this.type = COMMAND_TYPES.comment;
    this.comment_text = comment_text;
  }
}

export class Break {
  constructor () {
    this.type = COMMAND_TYPES.break;
  }
}

export class Reader {
  constructor (variable_value_menu = new VariableValueMenu()) {
    this.type = COMMAND_TYPES.reader;
    this.variable_value_menu = variable_value_menu;
  }
}

export class Writer {
  constructor (content, newline = true) {
    this.type = COMMAND_TYPES.writer;
    this.content = content;
    this.newline = newline;
  }
}

export class Attribution {
  constructor (variable, expression = []) {
    this.type = COMMAND_TYPES.attribution;
    this.variable = variable;
    this.expression = expression;
  }
}

export class ExpressionOperator {
  constructor (type_op, item) {
    this.type_op = type_op; // Logic, Arithmetic OR Relational
    this.item = item;
  }
}

export class ExpressionElement {
  constructor (type_exp, itens = []) {
    this.type_exp = type_exp;
    this.itens = itens;
  }
}

export class ConditionalExpression {
  constructor (expression) {
    this.type = EXPRESSION_TYPES.exp_conditional;
    this.expression = expression;
  }
}

export class LogicExpression {
  constructor (has_neg, first_operand, second_operand, operator) {
    this.type = EXPRESSION_TYPES.exp_logic;
    this.has_neg = has_neg;
    this.first_operand = first_operand;
    this.second_operand = second_operand;
    this.operator = operator;
  }
}

export class ArithmeticExpression {
  constructor (first_operand, second_operand, operator) {
    this.type = EXPRESSION_TYPES.exp_arithmetic;
    this.first_operand = first_operand;
    this.second_operand = second_operand;
    this.operator = operator;
  }
}

export class IfTrue {
  constructor (expression, commands_block, commands_else) {
    this.type = COMMAND_TYPES.iftrue;
    this.expression = expression;
    this.commands_block = commands_block;
    this.commands_else = commands_else;
  }
}

export class RepeatNTimes {
  constructor (
    var_attribution,
    var_incrementation,
    expression1,
    expression2,
    expression3,
    commands_block
  ) {
    this.type = COMMAND_TYPES.repeatNtimes;
    this.var_attribution = var_attribution;
    this.var_incrementation = var_incrementation;
    this.expression1 = expression1;
    this.expression2 = expression2;
    this.expression3 = expression3;
    this.commands_block = commands_block;
  }
}

export class WhileTrue {
  constructor (expression, commands_block) {
    this.type = COMMAND_TYPES.whiletrue;
    this.expression = expression;
    this.commands_block = commands_block;
  }
}

export class DoWhileTrue {
  constructor (expression, commands_block) {
    this.type = COMMAND_TYPES.dowhiletrue;
    this.expression = expression;
    this.commands_block = commands_block;
  }
}

export class Switch {
  constructor (variable, cases = []) {
    this.type = COMMAND_TYPES.switch;
    this.variable = variable;
    this.cases = cases;
  }
}

export class Return {
  constructor (variable_value_menu) {
    this.type = COMMAND_TYPES.return;
    this.variable_value_menu = variable_value_menu;
  }
}

export class SwitchCase {
  constructor (variable_value_menu, commands_block = []) {
    this.type = COMMAND_TYPES.switchcase;
    this.variable_value_menu = variable_value_menu;
    this.commands_block = commands_block;
  }
}

export class FunctionCall {
  constructor (function_called, parameters_list) {
    this.type = COMMAND_TYPES.functioncall;
    this.function_called = function_called;
    this.parameters_list = parameters_list;
  }
}

export class VariableValueMenu {
  constructor (
    variable_and_value = 7,
    content = null,
    row = null,
    column = null,
    include_constant = true,
    dimensions = 0
  ) {
    this.type = "var_value";
    this.variable_and_value = variable_and_value;
    this.content = content;
    this.row = row;
    this.column = column;
    this.include_constant = include_constant;
    this.dimensions = dimensions;
  }
}

export class FunctionCallMenu {
  constructor (function_called = null, parameters_list = []) {
    this.type = "function_call";
    this.function_called = function_called;
    this.parameters_list = parameters_list;
  }
}

export class Program {
  constructor () {
    this.functions = [];
    this.globals = [];
  }

  addFunction (function_to_add) {
    WatchJS.watch(
      function_to_add.parameters_list,
      function () {
        if (window.insertContext) {
          setTimeout(function () {
            AlgorithmManagement.renderAlgorithm();
          }, 300);
          window.insertContext = false;
        } else {
          AlgorithmManagement.renderAlgorithm();
        }
      },
      1
    );

    WatchJS.watch(
      function_to_add.variables_list,
      function () {
        if (window.insertContext) {
          setTimeout(function () {
            AlgorithmManagement.renderAlgorithm();
          }, 300);
          window.insertContext = false;
        } else {
          AlgorithmManagement.renderAlgorithm();
        }
      },
      1
    );

    this.functions.push(function_to_add);
  }

  addVariable (function_to_receive, variable) {
    if (this.functions[function_to_receive].variable === null) {
      this.functions[function_to_receive].variables_list = [];
    }
    this.functions[function_to_receive].variables_list.push(variable);
  }

  addGlobal (variable) {
    this.globals.push(variable);
  }
}