import React, { useState } from "react";
import { connect, ConnectedProps } from "react-redux";
import clsx from "clsx";
import { BrowserRouter as Router, Switch, Route } from "react-router-dom";
import { makeStyles } from "@material-ui/core/styles";
import AppBar from "@material-ui/core/AppBar";
import Drawer from "@material-ui/core/Drawer";
import Toolbar from "@material-ui/core/Toolbar";
import List from "@material-ui/core/List";
import ListItem from "@material-ui/core/ListItem";
import ListItemIcon from "@material-ui/core/ListItemIcon";
import ListItemText from "@material-ui/core/ListItemText";
import Typography from "@material-ui/core/Typography";
import Snackbar from "@material-ui/core/Snackbar";
import SnackbarContent from "@material-ui/core/SnackbarContent";
import IconButton from "@material-ui/core/IconButton";
import Slide from "@material-ui/core/Slide";
import { TransitionProps } from "@material-ui/core/transitions";
import MenuIcon from "@material-ui/icons/Menu";
import BarChartIcon from "@material-ui/icons/BarChart";
import LayersIcon from "@material-ui/icons/Layers";
import SettingsIcon from "@material-ui/icons/Settings";
import FeedbackIcon from "@material-ui/icons/Feedback";
import CloseIcon from "@material-ui/icons/Close";
import { AppState } from "./store";
import { paths } from "./paths";
import { closeSnackbar } from "./actions/snackbarActions";
import ListItemLink from "./components/ListItemLink";
import SchedulersView from "./views/SchedulersView";
import DashboardView from "./views/DashboardView";
import TasksView from "./views/TasksView";
import SettingsView from "./views/SettingsView";

const drawerWidth = 220;

const useStyles = makeStyles((theme) => ({
  root: {
    display: "flex",
  },
  toolbar: {
    paddingRight: 24, // keep right padding when drawer closed
  },
  toolbarIcon: {
    display: "flex",
    alignItems: "center",
    justifyContent: "flex-end",
    padding: "0 8px",
    ...theme.mixins.toolbar,
  },
  appBar: {
    backgroundColor: theme.palette.background.paper,
    zIndex: theme.zIndex.drawer + 1,
  },
  menuButton: {
    marginRight: theme.spacing(2),
    color: theme.palette.grey[700],
  },
  menuButtonHidden: {
    display: "none",
  },
  title: {
    flexGrow: 1,
    color: theme.palette.grey[800],
  },
  drawerPaper: {
    position: "relative",
    whiteSpace: "nowrap",
    width: drawerWidth,
    transition: theme.transitions.create("width", {
      easing: theme.transitions.easing.sharp,
      duration: theme.transitions.duration.enteringScreen,
    }),
    border: "none",
  },
  drawerPaperClose: {
    overflowX: "hidden",
    transition: theme.transitions.create("width", {
      easing: theme.transitions.easing.sharp,
      duration: theme.transitions.duration.leavingScreen,
    }),
    width: theme.spacing(7),
    [theme.breakpoints.up("sm")]: {
      width: theme.spacing(9),
    },
  },
  snackbar: {
    background: theme.palette.grey["A400"],
    color: "#ffffff",
  },
  snackbarCloseIcon: {
    color: theme.palette.grey[400],
  },
  appBarSpacer: theme.mixins.toolbar,
  mainContainer: {
    display: "flex",
    width: "100vw",
  },
  content: {
    flex: 1,
    height: "100vh",
    overflow: "hidden",
    background: "#ffffff",
  },
  contentWrapper: {
    height: "100%",
    display: "flex",
    paddingTop: "64px", // app-bar height
    overflow: "scroll",
  },
  sidebarContainer: {
    display: "flex",
    justifyContent: "space-between",
    height: "100%",
    flexDirection: "column",
  },
  listItem: {
    borderTopRightRadius: "24px",
    borderBottomRightRadius: "24px",
  },
}));

function mapStateToProps(state: AppState) {
  return { snackbar: state.snackbar };
}

const mapDispatchToProps = {
  closeSnackbar,
};

const connector = connect(mapStateToProps, mapDispatchToProps);

function SlideUpTransition(props: TransitionProps) {
  return <Slide {...props} direction="up" />;
}

function App(props: ConnectedProps<typeof connector>) {
  const classes = useStyles();
  const [open, setOpen] = useState(true);
  const toggleDrawer = () => {
    setOpen(!open);
  };
  return (
    <Router>
      <div className={classes.root}>
        <AppBar
          position="absolute"
          className={classes.appBar}
          variant="outlined"
        >
          <Toolbar className={classes.toolbar}>
            <IconButton
              edge="start"
              color="inherit"
              aria-label="open drawer"
              onClick={toggleDrawer}
              className={classes.menuButton}
            >
              <MenuIcon />
            </IconButton>
            <Typography
              component="h1"
              variant="h6"
              color="inherit"
              noWrap
              className={classes.title}
            >
              Asynq Monitoring
            </Typography>
          </Toolbar>
        </AppBar>
        <div className={classes.mainContainer}>
          <Drawer
            variant="permanent"
            classes={{
              paper: clsx(
                classes.drawerPaper,
                !open && classes.drawerPaperClose
              ),
            }}
            open={open}
          >
            <Snackbar
              anchorOrigin={{ vertical: "bottom", horizontal: "left" }}
              open={props.snackbar.isOpen}
              autoHideDuration={6000}
              onClose={props.closeSnackbar}
              TransitionComponent={SlideUpTransition}
            >
              <SnackbarContent
                message={props.snackbar.message}
                className={classes.snackbar}
                action={
                  <IconButton
                    size="small"
                    aria-label="close"
                    color="inherit"
                    onClick={props.closeSnackbar}
                  >
                    <CloseIcon
                      className={classes.snackbarCloseIcon}
                      fontSize="small"
                    />
                  </IconButton>
                }
              />
            </Snackbar>
            <div className={classes.appBarSpacer} />
            <div className={classes.sidebarContainer}>
              <List>
                <div>
                  <ListItemLink
                    to={paths.HOME}
                    primary="Queues"
                    icon={<BarChartIcon />}
                  />
                  <ListItemLink
                    to={paths.SCHEDULERS}
                    primary="Schedulers"
                    icon={<LayersIcon />}
                  />
                </div>
              </List>
              <List>
                <ListItemLink
                  to={paths.SETTINGS}
                  primary="Settings"
                  icon={<SettingsIcon />}
                />
                <ListItem
                  button
                  component="a"
                  className={classes.listItem}
                  href="https://github.com/hibiken/asynqmon/issues"
                  target="_blank"
                >
                  <ListItemIcon>
                    <FeedbackIcon />
                  </ListItemIcon>
                  <ListItemText primary="Report Issues" />
                </ListItem>
              </List>
            </div>
          </Drawer>
          <main className={classes.content}>
            <div className={classes.contentWrapper}>
              <Switch>
                <Route exact path={paths.QUEUE_DETAILS}>
                  <TasksView />
                </Route>
                <Route exact path={paths.SCHEDULERS}>
                  <SchedulersView />
                </Route>
                <Route exact path={paths.SETTINGS}>
                  <SettingsView />
                </Route>
                <Route path={paths.HOME}>
                  <DashboardView />
                </Route>
              </Switch>
            </div>
          </main>
        </div>
      </div>
    </Router>
  );
}

export default connector(App);