Extract logic into separate files

Signed-off-by: Louis Chemineau <louis@chmn.me>

5 files changed, 253 insertions, 106 deletions

diff --git a/apps/files_versions/src/utils/davClient.js b/apps/files_versions/src/utils/davClient.js
new file mode 100644
index 00000000000..e4bfeb10411
--- /dev/null
+++ b/apps/files_versions/src/utils/davClient.js
@@ -0,0 +1,34 @@
+/**
+ * @copyright 2022 Louis Chemineau <mlouis@chmn.me>
+ *
+ * @author Louis Chemineau <mlouis@chmn.me>
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import { createClient, getPatcher } from 'webdav'
+import { generateRemoteUrl } from '@nextcloud/router'
+import axios from '@nextcloud/axios'
+
+const rootPath = 'dav'
+
+// force our axios
+const patcher = getPatcher()
+patcher.patch('request', axios)
+
+// init webdav client on default dav endpoint
+const remote = generateRemoteUrl(rootPath)
+export default createClient(remote)
diff --git a/apps/files_versions/src/utils/davRequest.js b/apps/files_versions/src/utils/davRequest.js
new file mode 100644
index 00000000000..b77cd150643
--- /dev/null
+++ b/apps/files_versions/src/utils/davRequest.js
@@ -0,0 +1,33 @@
+/**
+ * @copyright Copyright (c) 2019 Louis Chmn <louis@chmn.me>
+ *
+ * @author Louis Chmn <louis@chmn.me>
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+export default `<?xml version="1.0"?>
+<d:propfind xmlns:d="DAV:"
+	xmlns:oc="http://owncloud.org/ns"
+	xmlns:nc="http://nextcloud.org/ns"
+	xmlns:ocs="http://open-collaboration-services.org/ns">
+	<d:prop>
+		<d:getcontentlength />
+		<d:getcontenttype />
+		<d:getlastmodified />
+	</d:prop>
+</d:propfind>`
diff --git a/apps/files_versions/src/utils/logger.js b/apps/files_versions/src/utils/logger.js
new file mode 100644
index 00000000000..4f0356764d9
--- /dev/null
+++ b/apps/files_versions/src/utils/logger.js
@@ -0,0 +1,27 @@
+/**
+ * @copyright 2022 Louis Chemineau <mlouis@chmn.me>
+ *
+ * @author Louis Chemineau <mlouis@chmn.me>
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import { getLoggerBuilder } from '@nextcloud/logger'
+
+export default getLoggerBuilder()
+	.setApp('files_version')
+	.detectUser()
+	.build()
diff --git a/apps/files_versions/src/utils/versions.js b/apps/files_versions/src/utils/versions.js
new file mode 100644
index 00000000000..477e7ef65fe
--- /dev/null
+++ b/apps/files_versions/src/utils/versions.js
@@ -0,0 +1,124 @@
+/**
+ * @copyright 2022 Louis Chemineau <mlouis@chmn.me>
+ *
+ * @author Louis Chemineau <mlouis@chmn.me>
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import { getCurrentUser } from '@nextcloud/auth'
+import client from '../utils/davClient.js'
+import davRequest from '../utils/davRequest.js'
+import logger from '../utils/logger.js'
+import { basename, joinPaths } from '@nextcloud/paths'
+import { generateUrl } from '@nextcloud/router'
+import { translate } from '@nextcloud/l10n'
+import moment from '@nextcloud/moment'
+
+/**
+ * @typedef {Object} Version
+ * @property {string} title - 'Current version' or ''
+ * @property {string} fileName - File name relative to the version DAV endpoint
+ * @property {string} mimeType - Empty for the current version, else the actual mime type of the version
+ * @property {string} size - Human readable size
+ * @property {string} type - 'file'
+ * @property {number} mtime - Version creation date as a timestamp
+ * @property {string} preview - Preview URL of the version
+ * @property {string} url - Download URL of the version
+ * @property {string|null} fileVersion - The version id, null for the current version
+ * @property {boolean} isCurrent - Whether this is the current version of the file
+ */
+
+/**
+ * @param fileInfo
+ * @return {Promise<Version[]>}
+ */
+export async function fetchVersions(fileInfo) {
+	const path = `/versions/${getCurrentUser()?.uid}/versions/${fileInfo.id}`
+
+	try {
+		/** @type {import('webdav').FileStat[]} */
+		const response = await client.getDirectoryContents(path, {
+			data: davRequest,
+		})
+		return response.map(version => formatVersion(version, fileInfo))
+	} catch (exception) {
+		logger.error('Could not fetch version', { exception })
+		throw exception
+	}
+}
+
+/**
+ * Restore the given version
+ *
+ * @param {Version} version
+ * @param {object} fileInfo
+ */
+export async function restoreVersion(version, fileInfo) {
+	try {
+		logger.debug('Restoring version', { url: version.url })
+		await client.moveFile(
+			`/versions/${getCurrentUser()?.uid}/versions/${fileInfo.id}/${version.fileVersion}`,
+			`/versions/${getCurrentUser()?.uid}/restore/target`
+		)
+	} catch (exception) {
+		logger.error('Could not restore version', { exception })
+		throw exception
+	}
+}
+
+/**
+ * Format version
+ *
+ * @param {object} version - raw version received from the versions DAV endpoint
+ * @param {object} fileInfo - file properties received from the files DAV endpoint
+ * @return {Version}
+ */
+function formatVersion(version, fileInfo) {
+	const isCurrent = version.mime === ''
+	const fileVersion = isCurrent ? null : basename(version.filename)
+
+	let url = null
+	let preview = null
+
+	if (isCurrent) {
+		// https://nextcloud_server2.test/remote.php/webdav/welcome.txt?downloadStartSecret=hl5awd7tbzg
+		url = joinPaths('/remote.php/webdav', fileInfo.path, fileInfo.name)
+		preview = generateUrl('/core/preview?fileId={fileId}&c={fileEtag}&x=250&y=250&forceIcon=0&a=0', {
+			fileId: fileInfo.id,
+			fileEtag: fileInfo.etag,
+		})
+	} else {
+		url = joinPaths('/remote.php/dav', version.filename)
+		preview = generateUrl('/apps/files_versions/preview?file={file}&version={fileVersion}', {
+			file: joinPaths(fileInfo.path, fileInfo.name),
+			fileVersion,
+		})
+	}
+
+	return {
+		title: isCurrent ? translate('files_versions', 'Current version') : '',
+		fileName: version.filename,
+		mimeType: version.mime,
+		size: isCurrent ? fileInfo.size : version.size,
+		type: version.type,
+		mtime: moment(isCurrent ? fileInfo.mtime : version.lastmod).unix(),
+		preview,
+		url,
+		fileVersion,
+		isCurrent,
+	}
+}
diff --git a/apps/files_versions/src/views/VersionTab.vue b/apps/files_versions/src/views/VersionTab.vue
index 90664491941..8159415dfc7 100644
--- a/apps/files_versions/src/views/VersionTab.vue
+++ b/apps/files_versions/src/views/VersionTab.vue
@@ -19,7 +19,7 @@
 	<div>
 		<ul>
 			<NcListItem v-for="version in versions"
-				:key="version.dateTime.unix()"
+				:key="version.mtime"
 				class="version"
 				:title="version.title"
 				:href="version.url">
@@ -29,25 +29,25 @@
 						alt=""
 						height="256"
 						width="256"
-						class="version-image">
+						class="version__image">
 				</template>
 				<template #subtitle>
-					<div class="version-info">
-						<a v-tooltip="version.dateTime" :href="version.url">{{ version.relativeTime }}</a>
-						<span class="version-info-size">•</span>
-						<span class="version-info-size">
-							{{ version.size }}
-						</span>
+					<div class="version__info">
+						<span>{{ version.mtime | humanDateFromNow }}</span>
+						<!-- Separate dot to improve alignement -->
+						<span class="version__info__size">•</span>
+						<span class="version__info__size">{{ version.size | humanReadableSize }}</span>
 					</div>
 				</template>
-				<template #actions>
-					<NcActionLink :href="version.url">
+				<template v-if="!version.isCurrent" #actions>
+					<NcActionLink :href="version.url"
+						:download="version.url">
 						<template #icon>
 							<Download :size="22" />
 						</template>
 						{{ t('files_versions', 'Download version') }}
 					</NcActionLink>
-					<NcActionButton v-if="!version.isCurrent" @click="restoreVersion(version)">
+					<NcActionButton @click="restoreVersion(version)">
 						<template #icon>
 							<BackupRestore :size="22" />
 						</template>
@@ -67,10 +67,6 @@
 </template>
 
 <script>
-import { createClient, getPatcher } from 'webdav'
-import axios from '@nextcloud/axios'
-import { generateRemoteUrl, generateUrl } from '@nextcloud/router'
-import { getCurrentUser } from '@nextcloud/auth'
 import BackupRestore from 'vue-material-design-icons/BackupRestore.vue'
 import Download from 'vue-material-design-icons/Download.vue'
 import NcActionButton from '@nextcloud/vue/dist/Components/NcActionButton.js'
@@ -78,78 +74,8 @@ import NcActionLink from '@nextcloud/vue/dist/Components/NcActionLink.js'
 import NcListItem from '@nextcloud/vue/dist/Components/NcListItem.js'
 import NcEmptyContent from '@nextcloud/vue/dist/Components/NcEmptyContent.js'
 import { showError, showSuccess } from '@nextcloud/dialogs'
+import { fetchVersions, restoreVersion } from '../utils/versions.js'
 import moment from '@nextcloud/moment'
-import { basename, joinPaths } from '@nextcloud/paths'
-import { getLoggerBuilder } from '@nextcloud/logger'
-import { translate } from '@nextcloud/l10n'
-
-const logger = getLoggerBuilder()
-	.setApp('files_version')
-	.detectUser()
-	.build()
-
-/**
- * Get WebDAV request body for version list
- */
-function getDavRequest() {
-	return `<?xml version="1.0"?>
-			<d:propfind xmlns:d="DAV:"
-				xmlns:oc="http://owncloud.org/ns"
-				xmlns:nc="http://nextcloud.org/ns"
-				xmlns:ocs="http://open-collaboration-services.org/ns">
-				<d:prop>
-					<d:getcontentlength />
-					<d:getcontenttype />
-					<d:getlastmodified />
-				</d:prop>
-			</d:propfind>`
-}
-
-/**
- * Format version
- *
- * @param version
- * @param fileInfo
- */
-function formatVersion(version, fileInfo) {
-	const fileVersion = basename(version.filename)
-	const isCurrent = version.mime === ''
-
-	const preview = isCurrent
-		? generateUrl('/core/preview?fileId={fileId}&c={fileEtag}&x=250&y=250&forceIcon=0&a=0', {
-			fileId: fileInfo.id,
-			fileEtag: fileInfo.etag,
-		})
-		: generateUrl('/apps/files_versions/preview?file={file}&version={fileVersion}', {
-			file: joinPaths(fileInfo.path, fileInfo.name),
-			fileVersion,
-		})
-
-	return {
-		displayVersionName: fileVersion,
-		title: isCurrent ? translate('files_versions', 'Current version') : '',
-		fileName: version.filename,
-		mimeType: version.mime,
-		size: OC.Util.humanFileSize(isCurrent ? fileInfo.size : version.size),
-		type: version.type,
-		dateTime: moment(isCurrent ? fileInfo.mtime : version.lastmod),
-		relativeTime: moment(isCurrent ? fileInfo.mtime : version.lastmod).fromNow(),
-		preview,
-		url: isCurrent ? joinPaths('/remote.php/dav', version.filename) : joinPaths('/remote.php/dav', fileInfo.path, fileInfo.name),
-		fileVersion,
-		isCurrent,
-	}
-}
-
-const rootPath = 'dav'
-
-// force our axios
-const patcher = getPatcher()
-patcher.patch('request', axios)
-
-// init webdav client on default dav endpoint
-const remote = generateRemoteUrl(rootPath)
-const client = createClient(remote)
 
 export default {
 	name: 'VersionTab',
@@ -161,12 +87,20 @@ export default {
 		BackupRestore,
 		Download,
 	},
+	filters: {
+		humanReadableSize(bytes) {
+			return OC.Util.humanFileSize(bytes)
+		},
+		humanDateFromNow(timestamp) {
+			return moment(timestamp * 1000).fromNow()
+		},
+	},
 	data() {
-
 		return {
 			fileInfo: null,
+			/** @type {import('../utils/versions.js').Version[]} */
 			versions: [],
-			loading: true,
+			loading: false,
 		}
 	},
 	methods: {
@@ -185,16 +119,10 @@ export default {
 		 * Get the existing versions infos
 		 */
 		async fetchVersions() {
-			const path = `/versions/${getCurrentUser().uid}/versions/${this.fileInfo.id}`
-
 			try {
-				const response = await client.getDirectoryContents(path, {
-					data: getDavRequest(),
-				})
-				this.versions = response.map(version => formatVersion(version, this.fileInfo))
-				this.loading = false
-			} catch (exception) {
-				logger.error('Could not fetch version', { exception })
+				this.loading = true
+				this.versions = await fetchVersions(this.fileInfo)
+			} finally {
 				this.loading = false
 			}
 		},
@@ -206,15 +134,13 @@ export default {
 		 */
 		async restoreVersion(version) {
 			try {
-				logger.debug('restoring version', version.url)
-				await client.moveFile(
-					`/versions/${getCurrentUser().uid}/versions/${this.fileInfo.id}/${version.fileVersion}`,
-					`/versions/${getCurrentUser().uid}/restore/target`
-				)
+				await restoreVersion(version, this.fileInfo)
+				// File info is not updated so we manually update its size and mtime if the restoration went fine.
+				this.fileInfo.size = version.size
+				this.fileInfo.mtime = version.lastmod
 				showSuccess(t('files_versions', 'Version restored'))
 				await this.fetchVersions()
 			} catch (exception) {
-				logger.error('Could not restore version', { exception })
 				showError(t('files_versions', 'Could not restore version'))
 			}
 		},
@@ -233,16 +159,19 @@ export default {
 .version {
 	display: flex;
 	flex-direction: row;
-	&-info {
+
+	&__info {
 		display: flex;
 		flex-direction: row;
 		align-items: center;
 		gap: 0.5rem;
-		&-size {
+
+		&__size {
 			color: var(--color-text-lighter);
 		}
 	}
-	&-image {
+
+	&__image {
 		width: 3rem;
 		height: 3rem;
 		border: 1px solid var(--color-border);