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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>GitHub User Browser</title>
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.4.2/react.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.4.2/react-dom.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.21.1/babel.min.js"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>
<body>
<!-- APPLICATION START -->
<div id="App"></div>
<!-- APPLICATION END -->
<!-- START CODE -->
<script type="text/babel">
// if you hit the github api rate limit append a token to your api calls
// const githubToken = '';
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
users: [],
searchTerm: '',
selectedUser: '',
selectedUserRepos: [],
selectedUserReposLength: 0,
totalResults: 0,
currentPage: 1,
usersPerPage: 8,
loading: false
};
}
handleChange = event => {
this.setState({ searchTerm: event.target.value });
};
handleSubmit = event => {
event.preventDefault();
this.setState({
loading: true
});
axios
.get(
`https://api.github.com/search/users?q=${
this.state.searchTerm
}&page=1&per_page=${this.state.usersPerPage}` //&${githubToken}
)
.then(resp => {
const results = resp.data.items;
this.setState({
loading: false,
users: results,
totalResults: Math.min(resp.data.total_count, 1000),
selectedUser: '',
selectedUserRepos: [],
selectedUserReposLength: 0,
currentPage: 1
});
});
};
handleUserClick = user => {
this.setState({
loading: true,
selectedUser: user,
selectedUserRepos: [],
selectedUserReposLength: 0
});
axios
.get(`https://api.github.com/users/${user}/repos`) //?${githubToken}
.then(resp => {
const repos = resp.data;
this.setState({ selectedUserReposLength: repos.length });
repos.map(repo => {
axios
.get(
`https://api.github.com/repos/${user}/${repo.name}/pulls` //?${githubToken}
)
.then(resp => {
const pulls = resp.data;
this.setState({
selectedUserRepos: [
...this.state.selectedUserRepos,
{ id: repo.id, name: repo.name, pulls: pulls.length }
]
});
});
});
})
.then(() => {
this.setState({ loading: false });
});
};
handlePageClick = page => {
this.setState({
loading: true
});
let pageNumber = Number(page);
axios
.get(
`https://api.github.com/search/users?q=${
this.state.searchTerm
}&page=${pageNumber}&per_page=${this.state.usersPerPage}` //&${githubToken}
)
.then(resp => {
const results = resp.data.items;
this.setState({
users: results,
selectedUser: '',
selectedUserRepos: [],
selectedUserReposLength: 0,
currentPage: pageNumber,
loading: false
});
});
};
render() {
const repoSection = () => {
if (
!this.state.loading &&
!this.state.selectedUserReposLength &&
this.state.selectedUser
) {
return <NoRepos />;
} else if (
!this.state.loading &&
this.state.selectedUserReposLength &&
this.state.selectedUser
) {
return <ReposList userRepos={this.state.selectedUserRepos} />;
}
};
return (
<div>
<h1>GitHub User Search</h1>
<Form
searchTerm={this.state.searchTerm}
handleSubmit={this.handleSubmit}
handleChange={this.handleChange}
/>
<hr />
{this.state.totalResults > 0 ? (
<p className='numResults'>{this.state.totalResults} Results</p>
) : null}
<div className='results'>
<UserList
users={this.state.users}
selectedUser={this.state.selectedUser}
handleUserClick={this.handleUserClick}
/>
{repoSection()}
</div>
<Pagination
totalResults={this.state.totalResults}
currentPage={this.state.currentPage}
usersPerPage={this.state.usersPerPage}
handlePageClick={this.handlePageClick}
/>
</div>
);
}
}
const Form = props => {
return (
<form onSubmit={e => props.handleSubmit(e)}>
<input
type='text'
onChange={props.handleChange}
value={props.searchTerm}
placeholder='GitHub username'
required
/>
<button type='submit'>Search</button>
</form>
);
};
const User = props => {
return (
<div
className={props.selectedUser === props.login ? 'selected' : 'user'}
onClick={() => props.handleUserClick(props.login)}
>
<img alt='avatar' src={props.avatar_url} />
<h2>{props.login}</h2>
</div>
);
};
const UserList = props => {
return (
<div>
{props.users.map(user => (
<User
{...user}
selectedUser={props.selectedUser}
key={user.id}
handleUserClick={props.handleUserClick}
/>
))}
</div>
);
};
const ReposList = props => (
<div>
<ul>
{props.userRepos.map(repo => {
return (
<li key={repo.id}>
{repo.name} <br />
Open Pull Requests: {repo.pulls}
</li>
);
})}
</ul>
</div>
);
const NoRepos = () => (
<div>
<p>No repositories found for this user.</p>
</div>
);
//helpers for pagination component
const LEFT_PAGE = 'LEFT';
const RIGHT_PAGE = 'RIGHT';
const range = (from, to, step = 1) => {
let i = from;
const range = [];
while (i <= to) {
range.push(i);
i += step;
}
return range;
};
class Pagination extends React.Component {
constructor(props) {
super(props);
// the number of additional page numbers to show on each side of the current page
this.pageNeighbors = 2;
}
gotoPage = page => {
this.props.handlePageClick(page);
};
handleClick = (page, event) => {
event.preventDefault();
this.gotoPage(page);
};
//jump back 5 pages
handleMoveLeft = event => {
event.preventDefault();
this.gotoPage(this.props.currentPage - this.pageNeighbors * 2 - 1);
};
//jump forward 5 pages
handleMoveRight = event => {
event.preventDefault();
this.gotoPage(this.props.currentPage + this.pageNeighbors * 2 + 1);
};
/*
* This method handles the core logic for generating the page numbers to be shown on the
* pagination control. I want the first page and last page to always be visible.
*/
fetchPageNumbers = () => {
const totalPages = Math.ceil(
this.props.totalResults / this.props.usersPerPage
);
const currentPage = this.props.currentPage;
const pageNeighbors = this.pageNeighbors;
/*
* totalNumbers: the total page numbers to show on the control
* totalBlocks: totalNumbers + 2 to cover for the left(<) and right(>) controls
*/
const totalNumbers = this.pageNeighbors * 2 + 3;
const totalBlocks = totalNumbers + 2;
if (totalPages > totalBlocks) {
let pages = [];
//use to determine when to show left(<) control
const leftBound = currentPage - pageNeighbors;
//use to determine when to show right(>) control
const rightBound = currentPage + pageNeighbors;
const beforeLastPage = totalPages - 1;
//first page number to show (after first page and right(>) control)
const startPage = leftBound > 2 ? leftBound : 2;
//last page number to show (before last page and left(<) control)
const endPage =
rightBound < beforeLastPage ? rightBound : beforeLastPage;
//initial page range does not include first, last, or left(<)/right(>) controls
pages = range(startPage, endPage);
const pagesCount = pages.length;
/*
* singleSpillOffset: total number of hidden pages either to the left or to the right
* leftSpill: has hidden pages to the left
* rightSpill: has hidden pages to the right
*/
const singleSpillOffset = totalNumbers - pagesCount - 1;
// are there hidden numbers to the left or the right?
const leftSpill = startPage > 2;
const rightSpill = endPage < beforeLastPage;
const leftSpillPage = LEFT_PAGE;
const rightSpillPage = RIGHT_PAGE;
if (leftSpill && !rightSpill) {
// if no hidden numbers to the right
const extraPages = range(
startPage - singleSpillOffset,
startPage - 1
);
pages = [leftSpillPage, ...extraPages, ...pages];
} else if (!leftSpill && rightSpill) {
// if no hidden numbers to the left
const extraPages = range(
endPage + 1,
endPage + singleSpillOffset
);
pages = [...pages, ...extraPages, rightSpillPage];
} else if (leftSpill && rightSpill) {
// if hidden numbers on both sides
pages = [leftSpillPage, ...pages, rightSpillPage];
}
return [1, ...pages, totalPages];
}
return range(1, totalPages);
};
render() {
if (!this.props.totalResults) return null;
if (this.totalPages === 1) return null;
const pages = this.fetchPageNumbers();
return (
<nav aria-label='Pagination'>
<ul className='pagination'>
{pages.map((page, index) => {
if (page === LEFT_PAGE)
return (
<li key={index} className='page-item'>
<a
className='page-link'
href='#'
aria-label='Previous'
onClick={this.handleMoveLeft}
>
<span aria-hidden='true'>«</span>
<span className='sr-only'>Previous</span>
</a>
</li>
);
if (page === RIGHT_PAGE)
return (
<li key={index} className='page-item'>
<a
className='page-link'
href='#'
aria-label='Next'
onClick={this.handleMoveRight}
>
<span aria-hidden='true'>»</span>
<span className='sr-only'>Next</span>
</a>
</li>
);
return (
<li
key={index}
className={`page-item${
this.props.currentPage === page ? ' active' : ''
}`}
>
<a
className='page-link'
href='#'
onClick={e => this.handleClick(page, e)}
>
{page}
</a>
</li>
);
})}
</ul>
</nav>
);
}
}
ReactDOM.render(<App />, document.getElementById('App'));
</script>
<!-- END CODE -->
</body>
</html>