import Blockly from 'blockly';

/**
 * @license Licensed under the Apache License, Version 2.0 (the "License"):
 *          http://www.apache.org/licenses/LICENSE-2.0
 */

/**
 * @fileoverview Arduino code generator for the Time blocks.
 *     Arduino built-in function docs: http://arduino.cc/en/Reference/HomePage
 */

/**
 * Code generator for the delay Arduino block.
 * Arduino code: loop { delay(X); }
 * @param {!Blockly.Block} block Block to generate the code from.
 * @return {string} Completed code.
 */
Blockly.Arduino['time_delay'] = function (block) {
    var delayTime = Blockly.Arduino.valueToCode(
        block, 'DELAY_TIME_MILI', Blockly.Arduino.ORDER_ATOMIC) || '0';
    var code = 'delay(' + delayTime + ');\n';
    return code;
};

/**
 * Code generator for the delayMicroseconds block.
 * Arduino code: loop { delayMicroseconds(X); }
 * @param {!Blockly.Block} block Block to generate the code from.
 * @return {string} Completed code.
 */
Blockly.Arduino['time_delaymicros'] = function (block) {
    var delayTimeMs = Blockly.Arduino.valueToCode(
        block, 'DELAY_TIME_MICRO', Blockly.Arduino.ORDER_ATOMIC) || '0';
    var code = 'delayMicroseconds(' + delayTimeMs + ');\n';
    return code;
};

/**
 * Code generator for the elapsed time in milliseconds block.
 * Arduino code: loop { millis() }
 * @param {!Blockly.Block} block Block to generate the code from.
 * @return {array} Completed code with order of operation.
 */
Blockly.Arduino['time_millis'] = function (block) {
    var code = 'millis()';
    return [code, Blockly.Arduino.ORDER_ATOMIC];
};

/**
 * Code generator for the elapsed time in microseconds block.
 * Arduino code: loop { micros() }
 * @param {!Blockly.Block} block Block to generate the code from.
 * @return {array} Completed code with order of operation.
 */
Blockly.Arduino['time_micros'] = function (block) {
    var code = 'micros()';
    return [code, Blockly.Arduino.ORDER_ATOMIC];
};

/**
 * Code generator for the wait forever (end of program) block
 * Arduino code: loop { while(true); }
 * @param {!Blockly.Block} block Block to generate the code from.
 * @return {string} Completed code.
 */
Blockly.Arduino['infinite_loop'] = function (block) {
    return 'while(true);\n';
};

Blockly.Arduino.sensebox_interval_timer = function (block) {
    var interval = this.getFieldValue('interval');
    Blockly.Arduino.variables_['define_interval_variables'] = 'const long interval = ' + interval + ';\nlong time_start = 0;\nlong time_actual = 0;';
    var branch = Blockly.Arduino.statementToCode(block, 'DO');
    var code = 'time_start = millis();\n';
    code += 'if (time_start > time_actual + interval) {\n  time_actual = millis();\n'
    code += branch;
    code += '}\n'
    return code;
};