5 files changed, 257 insertions, 0 deletions
diff --git a/apps/files_sharing/src/utils/AccountIcon.spec.ts b/apps/files_sharing/src/utils/AccountIcon.spec.ts
new file mode 100644
index 00000000000..bbc7f031774
--- /dev/null
+++ b/apps/files_sharing/src/utils/AccountIcon.spec.ts
@@ -0,0 +1,40 @@
+/*!
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+import { describe, expect, it, afterEach } from 'vitest'
+import { generateAvatarSvg } from './AccountIcon'
+describe('AccountIcon', () => {
+
+	afterEach(() => {
+		delete document.body.dataset.themes
+	})
+
+	it('should generate regular account avatar svg', () => {
+		const svg = generateAvatarSvg('admin')
+		expect(svg).toContain('/avatar/admin/32')
+		expect(svg).not.toContain('dark')
+		expect(svg).toContain('?guestFallback=true')
+	})
+
+	it('should generate guest account avatar svg', () => {
+		const svg = generateAvatarSvg('admin', true)
+		expect(svg).toContain('/avatar/guest/admin/32')
+		expect(svg).not.toContain('dark')
+		expect(svg).not.toContain('?guestFallback=true')
+	})
+
+	it('should generate dark mode account avatar svg', () => {
+		document.body.dataset.themes = 'dark'
+		const svg = generateAvatarSvg('admin')
+		expect(svg).toContain('/avatar/admin/32/dark')
+		expect(svg).toContain('?guestFallback=true')
+	})
+
+	it('should generate dark mode guest account avatar svg', () => {
+		document.body.dataset.themes = 'dark'
+		const svg = generateAvatarSvg('admin', true)
+		expect(svg).toContain('/avatar/guest/admin/32/dark')
+		expect(svg).not.toContain('?guestFallback=true')
+	})
+})
diff --git a/apps/files_sharing/src/utils/AccountIcon.ts b/apps/files_sharing/src/utils/AccountIcon.ts
new file mode 100644
index 00000000000..21732f08f68
--- /dev/null
+++ b/apps/files_sharing/src/utils/AccountIcon.ts
@@ -0,0 +1,28 @@
+/*!
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+import { generateUrl } from '@nextcloud/router'
+
+const isDarkMode = () => {
+	return window?.matchMedia?.('(prefers-color-scheme: dark)')?.matches === true
+		|| document.querySelector('[data-themes*=dark]') !== null
+}
+
+export const generateAvatarSvg = (userId: string, isGuest = false) => {
+	// normal avatar url: /avatar/{userId}/32?guestFallback=true
+	// dark avatar url: /avatar/{userId}/32/dark?guestFallback=true
+	// guest avatar url: /avatar/guest/{userId}/32
+	// guest dark avatar url: /avatar/guest/{userId}/32/dark
+	const basePath = isGuest ? `/avatar/guest/${userId}` : `/avatar/${userId}`
+	const darkModePath = isDarkMode() ? '/dark' : ''
+	const guestFallback = isGuest ? '' : '?guestFallback=true'
+
+	const url = `${basePath}/32${darkModePath}${guestFallback}`
+	const avatarUrl = generateUrl(url, { userId })
+
+	return `<svg width="32" height="32" viewBox="0 0 32 32"
+		xmlns="http://www.w3.org/2000/svg" class="sharing-status__avatar">
+		<image href="${avatarUrl}" height="32" width="32" />
+	</svg>`
+}
diff --git a/apps/files_sharing/src/utils/GeneratePassword.ts b/apps/files_sharing/src/utils/GeneratePassword.ts
new file mode 100644
index 00000000000..82efaaa69d4
--- /dev/null
+++ b/apps/files_sharing/src/utils/GeneratePassword.ts
@@ -0,0 +1,66 @@
+/**
+ * SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import axios from '@nextcloud/axios'
+import Config from '../services/ConfigService.ts'
+import { showError, showSuccess } from '@nextcloud/dialogs'
+import { translate as t } from '@nextcloud/l10n'
+
+const config = new Config()
+// note: some chars removed on purpose to make them human friendly when read out
+const passwordSet = 'abcdefgijkmnopqrstwxyzABCDEFGHJKLMNPQRSTWXYZ23456789'
+
+/**
+ * Generate a valid policy password or request a valid password if password_policy is enabled
+ *
+ * @param {boolean} verbose If enabled the the status is shown to the user via toast
+ */
+export default async function(verbose = false): Promise<string> {
+	// password policy is enabled, let's request a pass
+	if (config.passwordPolicy.api && config.passwordPolicy.api.generate) {
+		try {
+			const request = await axios.get(config.passwordPolicy.api.generate)
+			if (request.data.ocs.data.password) {
+				if (verbose) {
+					showSuccess(t('files_sharing', 'Password created successfully'))
+				}
+				return request.data.ocs.data.password
+			}
+		} catch (error) {
+			console.info('Error generating password from password_policy', error)
+			if (verbose) {
+				showError(t('files_sharing', 'Error generating password from password policy'))
+			}
+		}
+	}
+
+	const array = new Uint8Array(10)
+	const ratio = passwordSet.length / 255
+	getRandomValues(array)
+	let password = ''
+	for (let i = 0; i < array.length; i++) {
+		password += passwordSet.charAt(array[i] * ratio)
+	}
+	return password
+}
+
+/**
+ * Fills the given array with cryptographically secure random values.
+ * If the crypto API is not available, it falls back to less secure Math.random().
+ * Crypto API is available in modern browsers on secure contexts (HTTPS).
+ *
+ * @param {Uint8Array} array - The array to fill with random values.
+ */
+function getRandomValues(array: Uint8Array): void {
+	if (self?.crypto?.getRandomValues) {
+		self.crypto.getRandomValues(array)
+		return
+	}
+
+	let len = array.length
+	while (len--) {
+		array[len] = Math.floor(Math.random() * 256)
+	}
+}
diff --git a/apps/files_sharing/src/utils/NodeShareUtils.ts b/apps/files_sharing/src/utils/NodeShareUtils.ts
new file mode 100644
index 00000000000..f14f981e2ad
--- /dev/null
+++ b/apps/files_sharing/src/utils/NodeShareUtils.ts
@@ -0,0 +1,58 @@
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import { getCurrentUser } from '@nextcloud/auth'
+import type { Node } from '@nextcloud/files'
+import { ShareType } from '@nextcloud/sharing'
+
+type Share = {
+	/** The recipient display name */
+	'display-name': string
+	/** The recipient user id */
+	id: string
+	/** The share type */
+	type: ShareType
+}
+
+const getSharesAttribute = function(node: Node) {
+	return Object.values(node.attributes.sharees).flat() as Share[]
+}
+
+export const isNodeSharedWithMe = function(node: Node) {
+	const uid = getCurrentUser()?.uid
+	const shares = getSharesAttribute(node)
+
+	// If you're the owner, you can't share with yourself
+	if (node.owner === uid) {
+		return false
+	}
+
+	return shares.length > 0 && (
+		// If some shares are shared with you as a direct user share
+		shares.some(share => share.id === uid && share.type === ShareType.User)
+		// Or of the file is shared with a group you're in
+		// (if it's returned by the backend, we assume you're in it)
+		|| shares.some(share => share.type === ShareType.Group)
+	)
+}
+
+export const isNodeSharedWithOthers = function(node: Node) {
+	const uid = getCurrentUser()?.uid
+	const shares = getSharesAttribute(node)
+
+	// If you're NOT the owner, you can't share with yourself
+	if (node.owner === uid) {
+		return false
+	}
+
+	return shares.length > 0
+		// If some shares are shared with you as a direct user share
+		&& shares.some(share => share.id !== uid && share.type !== ShareType.Group)
+}
+
+export const isNodeShared = function(node: Node) {
+	const shares = getSharesAttribute(node)
+	return shares.length > 0
+}
diff --git a/apps/files_sharing/src/utils/SharedWithMe.js b/apps/files_sharing/src/utils/SharedWithMe.js
new file mode 100644
index 00000000000..2f63932bfbe
--- /dev/null
+++ b/apps/files_sharing/src/utils/SharedWithMe.js
@@ -0,0 +1,65 @@
+/**
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import { ShareType } from '@nextcloud/sharing'
+
+const shareWithTitle = function(share) {
+	if (share.type === ShareType.Group) {
+		return t(
+			'files_sharing',
+			'Shared with you and the group {group} by {owner}',
+			{
+				group: share.shareWithDisplayName,
+				owner: share.ownerDisplayName,
+			},
+			undefined,
+			{ escape: false },
+		)
+	} else if (share.type === ShareType.Team) {
+		return t(
+			'files_sharing',
+			'Shared with you and {circle} by {owner}',
+			{
+				circle: share.shareWithDisplayName,
+				owner: share.ownerDisplayName,
+			},
+			undefined,
+			{ escape: false },
+		)
+	} else if (share.type === ShareType.Room) {
+		if (share.shareWithDisplayName) {
+			return t(
+				'files_sharing',
+				'Shared with you and the conversation {conversation} by {owner}',
+				{
+					conversation: share.shareWithDisplayName,
+					owner: share.ownerDisplayName,
+				},
+				undefined,
+				{ escape: false },
+			)
+		} else {
+			return t(
+				'files_sharing',
+				'Shared with you in a conversation by {owner}',
+				{
+					owner: share.ownerDisplayName,
+				},
+				undefined,
+				{ escape: false },
+			)
+		}
+	} else {
+		return t(
+			'files_sharing',
+			'Shared with you by {owner}',
+			{ owner: share.ownerDisplayName },
+			undefined,
+			{ escape: false },
+		)
+	}
+}
+
+export { shareWithTitle }