import { directionColumn, srcDstColumn } from './util/TapUtils.jsx';
import { formatLatencySec, formatWithComma } from './util/Utils.js';

import Card from '@material-ui/core/Card';
import CardContent from '@material-ui/core/CardContent';
import CircularProgress from '@material-ui/core/CircularProgress';
import ExpandableTable from './ExpandableTable.jsx';
import Grid from '@material-ui/core/Grid';
import List from '@material-ui/core/List';
import ListItem from '@material-ui/core/ListItem';
import ListItemText from '@material-ui/core/ListItemText';
import PropTypes from 'prop-types';
import React from 'react';
import Typography from '@material-ui/core/Typography';
import _get from 'lodash/get';
import _isEmpty from 'lodash/isEmpty';
import _isNull from 'lodash/isNull';
import { withContext } from './util/AppContext.jsx';
import { withStyles } from '@material-ui/core/styles';

// https://godoc.org/google.golang.org/grpc/codes#Code
const grpcStatusCodes = {
  0: "OK",
  1: "Canceled",
  2: "Unknown",
  3: "InvalidArgument",
  4: "DeadlineExceeded",
  5: "NotFound",
  6: "AlreadyExists",
  7: "PermissionDenied",
  8: "ResourceExhausted",
  9: "FailedPrecondition",
  10: "Aborted",
  11: "OutOfRange",
  12: "Unimplemented",
  13: "Internal",
  14: "Unavailable",
  15: "DataLoss",
  16: "Unauthenticated"
};

const spinnerStyles = theme => ({
  progress: {
    margin: theme.spacing.unit * 2,
  },
});
const SpinnerBase = () => <CircularProgress size={20} />;
const Spinner = withStyles(spinnerStyles)(SpinnerBase);

const httpStatusCol = {
  title: "HTTP status",
  key: "http-status",
  render: datum => {
    let d = _get(datum, "responseInit.http.responseInit");
    return !d ? <Spinner /> : d.httpStatus;
  }
};

const responseInitLatencyCol = {
  title: "Latency",
  key: "rsp-latency",
  isNumeric: true,
  render: datum => {
    let d = _get(datum, "responseInit.http.responseInit");
    return !d ? <Spinner /> : formatTapLatency(d.sinceRequestInit);
  }
};

const grpcStatusCol = {
  title: "GRPC status",
  key: "grpc-status",
  render: datum => {
    let d = _get(datum, "responseEnd.http.responseEnd");
    return !d ? <Spinner /> :
      _isNull(d.eos) ? "---" : grpcStatusCodes[_get(d, "eos.grpcStatusCode")];
  }
};

const pathCol = {
  title: "Path",
  key: "path",
  render: datum => {
    let d = _get(datum, "requestInit.http.requestInit");
    return !d ? <Spinner /> : d.path;
  }
};

const methodCol = {
  title: "Method",
  key: "method",
  render: datum => {
    let d = _get(datum, "requestInit.http.requestInit");
    return !d ? <Spinner /> : _get(d, "method.registered");
  }
};

const topLevelColumns = (resourceType, ResourceLink) => [
  {
    title: "Direction",
    key: "direction",
    render: d => directionColumn(d.base.proxyDirection)
  },
  {
    title: "Name",
    key: "src-dst",
    render: d => {
      let datum = {
        direction: _get(d, "base.proxyDirection"),
        source: _get(d, "base.source"),
        destination: _get(d, "base.destination"),
        sourceLabels: _get(d, "base.sourceMeta.labels", {}),
        destinationLabels: _get(d, "base.destinationMeta.labels", {})
      };
      return srcDstColumn(datum, resourceType, ResourceLink);
    }
  }
];

const tapColumns = (resourceType, ResourceLink) => {
  return topLevelColumns(resourceType, ResourceLink).concat(
    [ methodCol, pathCol, responseInitLatencyCol, httpStatusCol, grpcStatusCol ]
  );
};

const formatTapLatency = str => {
  return formatLatencySec(str.replace("s", ""));
};

const itemDisplay = (title, value) => {
  return (
    <ListItem disableGutters>
      <ListItemText primary={title} secondary={value} />
    </ListItem>
  );
};

const requestInitSection = d => (
  <React.Fragment>
    <Typography variant="subtitle2">Request Init</Typography>
    <br />
    <List dense>
      {itemDisplay("Authority", _get(d, "requestInit.http.requestInit.authority"))}
      {itemDisplay("Path", _get(d, "requestInit.http.requestInit.path"))}
      {itemDisplay("Scheme", _get(d, "requestInit.http.requestInit.scheme.registered"))}
      {itemDisplay("Method", _get(d, "requestInit.http.requestInit.method.registered"))}
      {itemDisplay("TLS", _get(d, "base.tls"))}
    </List>
  </React.Fragment>
);

const responseInitSection = d => _isEmpty(d.responseInit) ? null : (
  <React.Fragment>
    <Typography variant="subtitle2">Response Init</Typography>
    <br />
    <List dense>
      {itemDisplay("HTTP Status", _get(d, "responseInit.http.responseInit.httpStatus"))}
      {itemDisplay("Latency", formatTapLatency(_get(d, "responseInit.http.responseInit.sinceRequestInit")))}
    </List>
  </React.Fragment>
);

const responseEndSection = d => _isEmpty(d.responseEnd) ? null : (
  <React.Fragment>
    <Typography variant="subtitle2">Response End</Typography>
    <br />

    <List dense>
      {itemDisplay("GRPC Status", _isNull(_get(d, "responseEnd.http.responseEnd.eos")) ? "N/A" : grpcStatusCodes[_get(d, "responseEnd.http.responseEnd.eos.grpcStatusCode")])}
      {itemDisplay("Latency", formatTapLatency(_get(d, "responseEnd.http.responseEnd.sinceResponseInit")))}
      {itemDisplay("Response Length (B)", formatWithComma(_get(d, "responseEnd.http.responseEnd.responseBytes")))}
    </List>
  </React.Fragment>
);


// hide verbose information
const expandedRowRender = d => {
  return (
    <Grid container spacing={16} className="tap-more-info">
      <Grid item xs={4}>
        <Card>
          <CardContent>{requestInitSection(d)}</CardContent>
        </Card>
      </Grid>
      <Grid item xs={4}>
        <Card>
          <CardContent>{responseInitSection(d)}</CardContent>
        </Card>
      </Grid>
      <Grid item xs={4}>
        <Card>
          <CardContent>{responseEndSection(d)}</CardContent>
        </Card>
      </Grid>
    </Grid>
  );
};

class TapEventTable extends React.Component {
  static propTypes = {
    api: PropTypes.shape({
      ResourceLink: PropTypes.func.isRequired,
    }).isRequired,
    resource: PropTypes.string,
    tableRows: PropTypes.arrayOf(PropTypes.shape({})),
  }

  static defaultProps = {
    resource: "",
    tableRows: []
  }

  render() {
    const { tableRows, resource, api } = this.props;
    let resourceType = resource.split("/")[0];
    let columns = tapColumns(resourceType, api.ResourceLink);

    return (
      <ExpandableTable
        tableRows={tableRows}
        tableColumns={columns}
        expandedRowRender={expandedRowRender}
        tableClassName="metric-table" />
    );
  }
}

export default withContext(TapEventTable);