import Button from "@material-ui/core/Button";
import Card from "@material-ui/core/Card";
import CardContent from "@material-ui/core/CardContent";
import IconButton from "@material-ui/core/IconButton";
import {
  createStyles,
  Theme,
  withStyles,
  WithStyles
} from "@material-ui/core/styles";
import Table from "@material-ui/core/Table";
import TableBody from "@material-ui/core/TableBody";
import TableCell from "@material-ui/core/TableCell";
import TableRow from "@material-ui/core/TableRow";
import ArrowDropDownIcon from "@material-ui/icons/ArrowDropDown";
import DeleteIcon from "@material-ui/icons/Delete";
import classNames from "classnames";
import * as React from "react";

import CardTitle from "@saleor/components/CardTitle";
import Skeleton from "@saleor/components/Skeleton";
import i18n from "../../i18n";
import { maybe, renderCollection } from "../../misc";
import { CountryFragment } from "../../taxes/types/CountryFragment";

export interface CountryListProps {
  countries: CountryFragment[];
  disabled: boolean;
  emptyText: React.ReactNode;
  title: React.ReactNode;
  onCountryAssign: () => void;
  onCountryUnassign: (country: string) => void;
}

const styles = (theme: Theme) =>
  createStyles({
    iconCell: {
      "&:last-child": {
        paddingRight: 0
      },
      width: 48 + theme.spacing.unit / 2
    },
    indicator: {
      color: theme.palette.text.disabled,
      display: "inline-block",
      left: 0,
      marginRight: theme.spacing.unit * 2,
      position: "absolute"
    },
    offsetCell: {
      "&:first-child": {
        paddingLeft: theme.spacing.unit * 3
      },
      position: "relative"
    },
    pointer: {
      cursor: "pointer"
    },
    root: {
      "&:last-child": {
        paddingBottom: 0
      },
      paddingTop: 0
    },
    rotate: {
      transform: "rotate(180deg)"
    },
    textRight: {
      textAlign: "right"
    },
    toLeft: {
      "&:first-child": {
        paddingLeft: 0
      }
    },
    wideColumn: {
      width: "100%"
    }
  });

const CountryList = withStyles(styles, {
  name: "CountryList"
})(
  ({
    classes,
    countries,
    disabled,
    emptyText,
    title,
    onCountryAssign,
    onCountryUnassign
  }: CountryListProps & WithStyles<typeof styles>) => {
    const [isCollapsed, setCollapseStatus] = React.useState(true);
    const toggleCollapse = () => setCollapseStatus(!isCollapsed);

    return (
      <Card>
        <CardTitle
          title={title}
          toolbar={
            <Button color="primary" onClick={onCountryAssign}>
              {i18n.t("Assign countries")}
            </Button>
          }
        />
        <CardContent className={classes.root}>
          <Table>
            <TableBody>
              <TableRow className={classes.pointer} onClick={toggleCollapse}>
                <TableCell
                  className={classNames(classes.wideColumn, classes.toLeft)}
                >
                  {i18n.t("{{ number }} Countries", {
                    context: "number of countries",
                    number: maybe(() => countries.length.toString(), "...")
                  })}
                </TableCell>
                <TableCell
                  className={classNames(classes.textRight, classes.iconCell)}
                >
                  <IconButton>
                    <ArrowDropDownIcon
                      className={classNames({
                        [classes.rotate]: !isCollapsed
                      })}
                    />
                  </IconButton>
                </TableCell>
              </TableRow>
              {!isCollapsed &&
                renderCollection(
                  countries,
                  (country, countryIndex) => (
                    <TableRow key={country ? country.code : "skeleton"}>
                      <TableCell className={classes.offsetCell}>
                        {maybe<React.ReactNode>(
                          () => (
                            <>
                              {(countryIndex === 0 ||
                                countries[countryIndex].country[0] !==
                                  countries[countryIndex - 1].country[0]) && (
                                <span className={classes.indicator}>
                                  {country.country[0]}
                                </span>
                              )}
                              {country.country}
                            </>
                          ),
                          <Skeleton />
                        )}
                      </TableCell>
                      <TableCell
                        className={classNames(
                          classes.textRight,
                          classes.iconCell
                        )}
                      >
                        <IconButton
                          color="primary"
                          disabled={!country || disabled}
                          onClick={() => onCountryUnassign(country.code)}
                        >
                          <DeleteIcon />
                        </IconButton>
                      </TableCell>
                    </TableRow>
                  ),
                  () => (
                    <TableRow>
                      <TableCell className={classes.toLeft} colSpan={2}>
                        {emptyText}
                      </TableCell>
                    </TableRow>
                  )
                )}
            </TableBody>
          </Table>
        </CardContent>
      </Card>
    );
  }
);
export default CountryList;