const { LitElement, html, css } = require('lit-element')

class GithubLink extends LitElement {
  static get styles () {
    return css`
        .github-corner:hover .octo-arm {
            animation: octocat-wave 560ms ease-in-out;
        }

        @keyframes octocat-wave {
            0% {
                transform: rotate(0deg);
            }

            20% {
                transform: rotate(-25deg);
            }

            40% {
                transform: rotate(10deg);
            }

            60% {
                transform: rotate(-25deg);
            }

            80% {
                transform: rotate(10deg);
            }

            100% {
                transform: rotate(0deg);
            }
        }

        @media (max-width: 500px) {
            .github-corner:hover .octo-arm {
                animation: none;
            }

            .github-corner .octo-arm {
                animation: octocat-wave 560ms ease-in-out;
            }
        }
    `
  }

  render () {
    return html`<a href="https://github.com/PrismarineJS/prismarine-web-client" class="github-corner" aria-label="View source on GitHub">
        <svg width="80" height="80" viewBox="0 0 250 250" style="fill:#151513; color:#fff; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true">
            <path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path>
            <path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path>
            <path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path>
        </svg>
    </a>`
  }
}
window.customElements.define('github-link', GithubLink)