import React, { Component } from "react";
import PropTypes from "prop-types";
import { connect } from "react-redux";
import {
  addStep,
  removeStep,
  changeStepIndex,
} from "../../../actions/tutorialBuilderActions";

import clsx from "clsx";

import Textfield from "./Textfield";
import StepType from "./StepType";
import BlocklyExample from "./BlocklyExample";
import Requirements from "./Requirements";
import Hardware from "./Hardware";

import { withStyles } from "@material-ui/core/styles";
import Typography from "@material-ui/core/Typography";
import IconButton from "@material-ui/core/IconButton";
import Tooltip from "@material-ui/core/Tooltip";

import {
  faPlus,
  faAngleDoubleUp,
  faAngleDoubleDown,
  faTrash,
} from "@fortawesome/free-solid-svg-icons";
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";

import MarkdownEditor from "./MarkdownEditor";

const styles = (theme) => ({
  button: {
    backgroundColor: theme.palette.primary.main,
    color: theme.palette.primary.contrastText,
    width: "40px",
    height: "40px",
    "&:hover": {
      backgroundColor: theme.palette.primary.main,
      color: theme.palette.primary.contrastText,
    },
  },
  delete: {
    backgroundColor: theme.palette.error.dark,
    color: theme.palette.error.contrastText,
    "&:hover": {
      backgroundColor: theme.palette.error.dark,
      color: theme.palette.error.contrastText,
    },
  },
});

class Step extends Component {
  render() {
    var index = this.props.index;
    var steps = this.props.steps;
    return (
      <div
        style={{
          borderRadius: "25px",
          border: "1px solid lightgrey",
          padding: "10px 14px 10px 10px",
          marginBottom: "20px",
        }}
      >
        <Typography
          variant="h6"
          style={{ marginBottom: "10px", marginLeft: "4px" }}
        >
          Schritt {index + 1}
        </Typography>
        <div style={{ display: "flex", position: "relative" }}>
          <div
            style={{
              width: "40px",
              marginRight: "10px",
              position: "absolute",
              left: "4px",
              bottom: "10px",
            }}
          >
            <Tooltip title="Schritt hinzufügen" arrow>
              <IconButton
                className={this.props.classes.button}
                style={index === 0 ? {} : { marginBottom: "5px" }}
                onClick={() => this.props.addStep(index + 1)}
              >
                <FontAwesomeIcon icon={faPlus} size="xs" />
              </IconButton>
            </Tooltip>
            {index !== 0 ? (
              <div>
                <Tooltip
                  title={`Schritt ${index + 1} nach oben schieben`}
                  arrow
                >
                  <IconButton
                    disabled={index < 2}
                    className={this.props.classes.button}
                    style={{ marginBottom: "5px" }}
                    onClick={() => this.props.changeStepIndex(index, index - 1)}
                  >
                    <FontAwesomeIcon icon={faAngleDoubleUp} size="xs" />
                  </IconButton>
                </Tooltip>
                <Tooltip
                  title={`Schritt ${index + 1} nach unten schieben`}
                  arrow
                >
                  <IconButton
                    disabled={index === steps.length - 1}
                    className={this.props.classes.button}
                    style={{ marginBottom: "5px" }}
                    onClick={() => this.props.changeStepIndex(index, index + 1)}
                  >
                    <FontAwesomeIcon icon={faAngleDoubleDown} size="xs" />
                  </IconButton>
                </Tooltip>
                <Tooltip title={`Schritt ${index + 1} löschen`} arrow>
                  <IconButton
                    disabled={index === 0}
                    className={clsx(
                      this.props.classes.button,
                      this.props.classes.delete
                    )}
                    onClick={() => this.props.removeStep(index)}
                  >
                    <FontAwesomeIcon icon={faTrash} size="xs" />
                  </IconButton>
                </Tooltip>
              </div>
            ) : null}
          </div>
          <div style={{ width: "100%", marginLeft: "54px" }}>
            <StepType value={this.props.step.type} index={index} />
            <Textfield
              value={this.props.step.headline}
              property={"headline"}
              label={"Überschrift"}
              index={index}
              error={this.props.error.steps[index].headline}
              errorText={`Gib eine Überschrift für die ${
                this.props.step.type === "task" ? "Aufgabe" : "Anleitung"
              } ein.`}
            />
            <MarkdownEditor
              value={this.props.step.text}
              property={"text"}
              label={
                this.props.step.type === "task"
                  ? "Aufgabenstellung"
                  : "Instruktionen"
              }
              index={index}
              multiline
              error={this.props.error.steps[index].text}
              errorText={`Gib Instruktionen für die ${
                this.props.step.type === "task" ? "Aufgabe" : "Anleitung"
              } ein.`}
            />
            {index === 0 ? (
              <div>
                <Requirements
                  value={
                    this.props.step.requirements
                      ? this.props.step.requirements
                      : []
                  }
                  index={index}
                />
                <Hardware
                  value={
                    this.props.step.hardware ? this.props.step.hardware : []
                  }
                  index={index}
                  error={this.props.error.steps[index].hardware}
                />
              </div>
            ) : null}
            <BlocklyExample
              value={this.props.step.xml}
              index={index}
              task={this.props.step.type === "task"}
              error={this.props.error.steps[index].xml ? true : false}
            />
          </div>
        </div>
      </div>
    );
  }
}

Step.propTypes = {
  addStep: PropTypes.func.isRequired,
  removeStep: PropTypes.func.isRequired,
  changeStepIndex: PropTypes.func.isRequired,
  steps: PropTypes.array.isRequired,
  change: PropTypes.number.isRequired,
  error: PropTypes.object.isRequired,
};

const mapStateToProps = (state) => ({
  steps: state.builder.steps,
  change: state.builder.change,
  error: state.builder.error,
});

export default connect(mapStateToProps, {
  addStep,
  removeStep,
  changeStepIndex,
})(withStyles(styles, { withTheme: true })(Step));