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import { makeStyles } from '@material-ui/styles';
import IconButton from '@material-ui/core/IconButton';
import Toolbar from '@material-ui/core/Toolbar';
import KeyboardArrowLeft from '@material-ui/icons/KeyboardArrowLeft';
import KeyboardArrowRight from '@material-ui/icons/KeyboardArrowRight';
import ErrorOutline from '@material-ui/icons/ErrorOutline';
import CheckCircleOutline from '@material-ui/icons/CheckCircleOutline';
import Paper from '@material-ui/core/Paper';
import Filter from './Filter';
import Skeleton from '@material-ui/lab/Skeleton';
import gql from 'graphql-tag';
import React from 'react';
import { useQuery } from '@apollo/react-hooks';
import { useLocation, Link } from 'react-router-dom';
import BugRow from './BugRow';
import List from './List';
const useStyles = makeStyles(theme => ({
main: {
maxWidth: 800,
margin: 'auto',
marginTop: theme.spacing(4),
marginBottom: theme.spacing(4),
overflow: 'hidden',
},
pagination: {
...theme.typography.overline,
display: 'flex',
alignItems: 'center',
justifyContent: 'center',
},
toolbar: {
backgroundColor: theme.palette.grey['100'],
borderColor: theme.palette.grey['300'],
borderWidth: '1px 0',
borderStyle: 'solid',
margin: theme.spacing(0, -1),
},
header: {
...theme.typography.h6,
padding: theme.spacing(2, 4),
},
spacer: {
flex: 1,
},
placeholderRow: {
padding: theme.spacing(1),
borderBottomColor: theme.palette.grey['300'],
borderBottomWidth: '1px',
borderBottomStyle: 'solid',
display: 'flex',
alignItems: 'center',
},
placeholderRowStatus: {
margin: theme.spacing(1, 2),
},
placeholderRowText: {
flex: 1,
},
noBug: {
...theme.typography.h5,
padding: theme.spacing(8),
textAlign: 'center',
borderBottomColor: theme.palette.grey['300'],
borderBottomWidth: '1px',
borderBottomStyle: 'solid',
'& > p': {
margin: '0',
},
},
}));
const QUERY = gql`
query(
$first: Int
$last: Int
$after: String
$before: String
$query: String
) {
defaultRepository {
bugs: allBugs(
first: $first
last: $last
after: $after
before: $before
query: $query
) {
totalCount
edges {
cursor
node {
...BugRow
}
}
pageInfo {
hasNextPage
hasPreviousPage
startCursor
endCursor
}
}
}
}
${BugRow.fragment}
`;
function editParams(params, callback) {
const cloned = new URLSearchParams(params.toString());
callback(cloned);
return cloned;
}
// TODO: factor this out
const Placeholder = ({ count }) => {
const classes = useStyles();
return (
<>
{new Array(count).fill(null).map((_, i) => (
<div key={i} className={classes.placeholderRow}>
<Skeleton
className={classes.placeholderRowStatus}
variant="circle"
width={20}
height={20}
/>
<div className={classes.placeholderRowText}>
<Skeleton height={22} />
<Skeleton height={24} width="60%" />
</div>
</div>
))}
</>
);
};
// TODO: factor this out
const NoBug = () => {
const classes = useStyles();
return (
<div className={classes.noBug}>
<ErrorOutline fontSize="large" />
<p>No results matched your search.</p>
</div>
);
};
function ListQuery() {
const classes = useStyles();
const location = useLocation();
const params = new URLSearchParams(location.search);
const query = params.get('q');
const page = {
first: params.get('first'),
last: params.get('last'),
after: params.get('after'),
before: params.get('before'),
};
// If nothing set, show the first 10 items
if (!page.first && !page.last) {
page.first = 10;
}
const perPage = page.first || page.last;
const { loading, error, data } = useQuery(QUERY, {
variables: {
...page,
query,
},
});
let nextPage = null;
let previousPage = null;
let hasNextPage = false;
let hasPreviousPage = false;
let count = 0;
if (!loading && !error && data.defaultRepository.bugs) {
const bugs = data.defaultRepository.bugs;
hasNextPage = bugs.pageInfo.hasNextPage;
hasPreviousPage = bugs.pageInfo.hasPreviousPage;
count = bugs.totalCount;
// This computes the URL for the next page
nextPage = {
...location,
search: editParams(params, p => {
p.delete('last');
p.delete('before');
p.set('first', perPage);
p.set('after', bugs.pageInfo.endCursor);
}).toString(),
};
// and this for the previous page
previousPage = {
...location,
search: editParams(params, p => {
p.delete('first');
p.delete('after');
p.set('last', perPage);
p.set('before', bugs.pageInfo.startCursor);
}).toString(),
};
}
let content;
if (loading) {
content = <Placeholder count={10} />;
} else if (error) {
content = <p>Error: {JSON.stringify(error)}</p>;
} else {
const bugs = data.defaultRepository.bugs;
if (bugs.totalCount === 0) {
content = <NoBug />;
} else {
content = <List bugs={bugs} />;
}
}
return (
<Paper className={classes.main}>
<header className={classes.header}>Issues</header>
<Toolbar className={classes.toolbar}>
{/* TODO */}
<Filter active icon={ErrorOutline}>
123 open
</Filter>
<Filter icon={CheckCircleOutline}>456 closed</Filter>
<div className={classes.spacer} />
<Filter>Author</Filter>
<Filter>Label</Filter>
<Filter>Sort</Filter>
</Toolbar>
{content}
<div className={classes.pagination}>
<IconButton
component={Link}
to={previousPage}
disabled={!hasPreviousPage}
>
<KeyboardArrowLeft />
</IconButton>
<div>{loading ? 'Loading' : `Total: ${count}`}</div>
<IconButton component={Link} to={nextPage} disabled={!hasNextPage}>
<KeyboardArrowRight />
</IconButton>
</div>
</Paper>
);
}
export default ListQuery;
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