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<script>
import { GlDropdown, GlDropdownItem, GlDropdownDivider } from '@gitlab/ui';
import { getVersions } from '../../services/fetch_versions';
import { isGitLabHosted } from '../environment';
export default {
components: {
GlDropdown,
GlDropdownItem,
GlDropdownDivider,
},
data() {
return {
versions: {},
activeVersion: '',
};
},
async created() {
// Only build this menu if this is a GitLab-hosted copy of the site.
// Self-hosted Docs will only contain a single version.
if (isGitLabHosted()) {
try {
this.versions = await getVersions();
this.activeVersion = this.getActiveVersion(this.versions);
} catch (err) {
console.error(`Failed to fetch versions.json: ${err}`); // eslint-disable-line no-console
}
}
},
methods: {
getVersionPath(versionNumber) {
let path = window.location.pathname;
// If we're viewing an older version, drop its version prefix when creating links.
if (this.activeVersion !== this.versions.next) {
const pathArr = window.location.pathname.split('/').filter((n) => n);
pathArr.shift();
path = `/${pathArr.join('/')}`;
}
if (versionNumber) {
path = `/${versionNumber}${path}`;
}
return path;
},
getActiveVersion(versions) {
let activeVersion = versions.next;
// Check if the first item in the URL path is a valid version.
// If so, that should be the active menu item.
const versionPath = window.location.pathname.split('/')[1];
Object.keys(versions).forEach((key) => {
if (
versions[key] === versionPath ||
(versions[key].constructor === Array && versions[key].includes(versionPath))
) {
activeVersion = versionPath;
}
});
return activeVersion;
},
},
};
</script>
<template>
<gl-dropdown
v-if="versions.next"
:text="activeVersion"
class="mb-2 mb-md-0 mr-md-3 ml-md-3 d-flex"
data-testid="versions-menu"
>
<gl-dropdown-item :href="getVersionPath()">
<span data-testid="next-version">{{ versions.next }}</span> (not yet released)
</gl-dropdown-item>
<gl-dropdown-divider />
<gl-dropdown-item :href="getVersionPath(versions.current)">
{{ versions.current }} (recently released)
</gl-dropdown-item>
<gl-dropdown-item v-for="v in versions.last_minor" :key="v" :href="getVersionPath(v)">
{{ v }}
</gl-dropdown-item>
<gl-dropdown-divider />
<gl-dropdown-item v-for="v in versions.last_major" :key="v" :href="getVersionPath(v)">
{{ v }}
</gl-dropdown-item>
<gl-dropdown-divider />
<gl-dropdown-item href="/archives">Archives</gl-dropdown-item>
</gl-dropdown>
</template>
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