From ade862304808b5f40a97cda4087a6d13014d3923 Mon Sep 17 00:00:00 2001
From: Joas Schilling <coding@schilljs.com>
Date: Wed, 31 Aug 2022 07:54:31 +0200
Subject: [PATCH] Shamelessly copy the good work of Skjnldsv from the files app

Signed-off-by: Joas Schilling <coding@schilljs.com>
---
 .../NewMessageForm/NewMessageForm.vue         | 112 ++++++--
 .../NewMessageForm/TemplatePreview.vue        | 240 ++++++++++++++++++
 src/services/filesSharingServices.js          |   8 +-
 3 files changed, 342 insertions(+), 18 deletions(-)
 create mode 100644 src/components/NewMessageForm/TemplatePreview.vue

diff --git a/src/components/NewMessageForm/NewMessageForm.vue b/src/components/NewMessageForm/NewMessageForm.vue
index 279672c3d..c3691de5e 100644
--- a/src/components/NewMessageForm/NewMessageForm.vue
+++ b/src/components/NewMessageForm/NewMessageForm.vue
@@ -162,13 +162,15 @@
 
 		<!-- Text file creation dialog -->
 		<NcModal v-if="showTextFileDialog !== false"
-			size="small"
+			size="normal"
+			class="templates-picker"
 			@close="dismissTextFileCreation">
 			<div class="new-text-file">
 				<h2>
 					{{ t('spreed', 'Create and share a new file') }}
 				</h2>
-				<form class="new-text-file__form"
+				<form class="new-text-file__form templates-picker__form"
+					:style="style"
 					@submit.prevent="handleCreateTextFile">
 					<NcTextField id="new-file-form-name"
 						ref="textFileTitleInput"
@@ -177,17 +179,33 @@
 						:label="t('spreed', 'Name of the new file')"
 						:placeholder="textFileTitle"
 						:value.sync="textFileTitle" />
+
+					<template v-if="fileTemplate.templates.length">
+						<ul class="templates-picker__list">
+							<TemplatePreview v-bind="emptyTemplate"
+								:checked="checked === emptyTemplate.fileid"
+								@check="onCheck" />
+
+							<TemplatePreview v-for="template in fileTemplate.templates"
+								:key="template.fileid"
+								v-bind="template"
+								:checked="checked === template.fileid"
+								:ratio="fileTemplate.ratio"
+								@check="onCheck" />
+						</ul>
+					</template>
+
+					<div class="new-text-file__buttons">
+						<NcButton type="tertiary"
+							@click="dismissTextFileCreation">
+							{{ t('spreed', 'Close') }}
+						</NcButton>
+						<NcButton type="primary"
+							@click="handleCreateTextFile">
+							{{ t('spreed', 'Create file') }}
+						</NcButton>
+					</div>
 				</form>
-				<div class="new-text-file__buttons">
-					<NcButton type="tertiary"
-						@click="dismissTextFileCreation">
-						{{ t('spreed', 'Close') }}
-					</NcButton>
-					<NcButton type="primary"
-						@click="handleCreateTextFile">
-						{{ t('spreed', 'Create file') }}
-					</NcButton>
-				</div>
 			</div>
 		</NcModal>
 	</div>
@@ -216,6 +234,7 @@ import NcModal from '@nextcloud/vue/dist/Components/NcModal.js'
 import Folder from 'vue-material-design-icons/Folder.vue'
 import Upload from 'vue-material-design-icons/Upload.vue'
 import NcTextField from '@nextcloud/vue/dist/Components/NcTextField.js'
+import TemplatePreview from './TemplatePreview.vue'
 
 const picker = getFilePickerBuilder(t('spreed', 'File to share'))
 	.setMultiSelect(false)
@@ -224,6 +243,10 @@ const picker = getFilePickerBuilder(t('spreed', 'File to share'))
 	.allowDirectories()
 	.build()
 
+const border = 2
+const margin = 8
+const width = margin * 20
+
 export default {
 
 	name: 'NewMessageForm',
@@ -245,6 +268,7 @@ export default {
 		NcModal,
 		Folder,
 		Upload,
+		TemplatePreview,
 		NcTextField,
 	},
 
@@ -266,6 +290,9 @@ export default {
 			showTextFileDialog: false,
 			textFileTitle: t('spreed', 'New file'),
 			newFileError: '',
+
+			// Check empty template by default
+			checked: -1,
 		}
 	},
 
@@ -372,6 +399,34 @@ export default {
 		fileTemplateOptions() {
 			return this.$store.getters.getFileTemplates()
 		},
+
+		fileTemplate() {
+			return this.fileTemplateOptions[this.showTextFileDialog]
+		},
+
+		emptyTemplate() {
+			return {
+				basename: t('files', 'Blank'),
+				fileid: -1,
+				filename: t('files', 'Blank'),
+				hasPreview: false,
+				mime: this.fileTemplate?.mimetypes[0] || this.fileTemplate?.mimetypes,
+			}
+		},
+
+		selectedTemplate() {
+			return this.fileTemplate.templates.find(template => template.fileid === this.checked)
+		},
+
+		style() {
+			return {
+				'--margin': margin + 'px',
+				'--width': width + 'px',
+				'--border': border + 'px',
+				'--fullwidth': width + 2 * margin + 2 * border + 'px',
+				'--height': this.fileTemplate.ratio ? Math.round(width / this.fileTemplate.ratio) + 'px' : null,
+			}
+		},
 	},
 
 	watch: {
@@ -656,19 +711,31 @@ export default {
 			this.showSimplePollsEditor = value
 		},
 
+		/**
+		 * Manages the radio template picker change
+		 *
+		 * @param {number} fileid the selected template file id
+		 */
+		onCheck(fileid) {
+			this.checked = fileid
+		},
+
 		// Create text file and share it to a conversation
 		async handleCreateTextFile() {
 			this.newFileError = ''
 			let filePath = this.$store.getters.getAttachmentFolder() + '/' + this.textFileTitle.replace('/', '')
-			const fileTemplate = this.fileTemplateOptions[this.showTextFileDialog]
 
-			if (!filePath.endsWith(fileTemplate.extension)) {
-				filePath += fileTemplate.extension
+			if (!filePath.endsWith(this.fileTemplate.extension)) {
+				filePath += this.fileTemplate.extension
 			}
 
 			let fileData
 			try {
-				const response = await createTextFile(filePath)
+				const response = await createTextFile(
+					filePath,
+					this.selectedTemplate?.filename,
+					this.selectedTemplate?.templateType,
+				)
 				fileData = response.data.ocs.data
 			} catch (error) {
 				console.error('Error while creating file', error)
@@ -813,6 +880,19 @@ export default {
 
 	&__form {
 		width: 100%;
+
+		.templates-picker__list {
+			display: grid;
+			grid-gap: calc(var(--margin) * 2);
+			grid-auto-columns: 1fr;
+			// We want maximum 5 columns. Putting 6 as we don't count the grid gap. So it will always be lower than 6
+			max-width: calc(var(--fullwidth) * 6);
+			grid-template-columns: repeat(auto-fit, var(--fullwidth));
+			// Make sure all rows are the same height
+			grid-auto-rows: 1fr;
+			// Center the columns set
+			justify-content: center;
+		}
 	}
 }
 </style>
diff --git a/src/components/NewMessageForm/TemplatePreview.vue b/src/components/NewMessageForm/TemplatePreview.vue
new file mode 100644
index 000000000..88a58530c
--- /dev/null
+++ b/src/components/NewMessageForm/TemplatePreview.vue
@@ -0,0 +1,240 @@
+<!--
+  - @copyright Copyright (c) 2020 John Molakvoæ <skjnldsv@protonmail.com>
+  -
+  - @author John Molakvoæ <skjnldsv@protonmail.com>
+  -
+  - @license GNU AGPL version 3 or any later version
+  -
+  - 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/>.
+  -
+  -->
+
+<!-- FIXME COPY FROM apps/files/src/components/TemplatePreview.vue should be deduplicated -->
+<template>
+	<li class="template-picker__item">
+		<input :id="id"
+			:checked="checked"
+			type="radio"
+			class="radio"
+			name="template-picker"
+			@change="onCheck">
+
+		<label :for="id" class="template-picker__label">
+			<div class="template-picker__preview"
+				:class="failedPreview ? 'template-picker__preview--failed' : ''">
+				<img class="template-picker__image"
+					:src="realPreviewUrl"
+					alt=""
+					draggable="false"
+					@error="onFailure">
+			</div>
+
+			<span class="template-picker__title">
+				{{ nameWithoutExt }}
+			</span>
+		</label>
+	</li>
+</template>
+
+<script>
+import { generateUrl } from '@nextcloud/router'
+import { getCurrentUser } from '@nextcloud/auth'
+
+const encodeFilePath = function(path) {
+	const pathSections = (path.startsWith('/') ? path : `/${path}`).split('/')
+	let relativePath = ''
+	pathSections.forEach((section) => {
+		if (section !== '') {
+			relativePath += '/' + encodeURIComponent(section)
+		}
+	})
+	return relativePath
+}
+
+const isPublic = function() {
+	return !getCurrentUser()
+}
+
+const getToken = function() {
+	return document.getElementById('sharingToken') && document.getElementById('sharingToken').value
+}
+
+// preview width generation
+const previewWidth = 256
+
+export default {
+	name: 'TemplatePreview',
+	inheritAttrs: false,
+
+	props: {
+		basename: {
+			type: String,
+			required: true,
+		},
+		checked: {
+			type: Boolean,
+			default: false,
+		},
+		fileid: {
+			type: [String, Number],
+			required: true,
+		},
+		filename: {
+			type: String,
+			required: true,
+		},
+		previewUrl: {
+			type: String,
+			default: null,
+		},
+		hasPreview: {
+			type: Boolean,
+			default: true,
+		},
+		mime: {
+			type: String,
+			required: true,
+		},
+		ratio: {
+			type: Number,
+			default: null,
+		},
+	},
+
+	data() {
+		return {
+			failedPreview: false,
+		}
+	},
+
+	computed: {
+		/**
+		 * Strip away extension from name
+		 *
+		 * @return {string}
+		 */
+		nameWithoutExt() {
+			return this.basename.indexOf('.') > -1 ? this.basename.split('.').slice(0, -1).join('.') : this.basename
+		},
+
+		id() {
+			return `template-picker-${this.fileid}`
+		},
+
+		realPreviewUrl() {
+			// If original preview failed, fallback to mime icon
+			if (this.failedPreview && this.mimeIcon) {
+				return this.mimeIcon
+			}
+
+			if (this.previewUrl) {
+				return this.previewUrl
+			}
+			// TODO: find a nicer standard way of doing this?
+			if (isPublic()) {
+				return generateUrl(`/apps/files_sharing/publicpreview/${getToken()}?fileId=${this.fileid}&file=${encodeFilePath(this.filename)}&x=${previewWidth}&y=${previewWidth}&a=1`)
+			}
+			return generateUrl(`/core/preview?fileId=${this.fileid}&x=${previewWidth}&y=${previewWidth}&a=1`)
+		},
+
+		mimeIcon() {
+			return OC.MimeType.getIconUrl(this.mime)
+		},
+	},
+
+	methods: {
+		onCheck() {
+			this.$emit('check', this.fileid)
+		},
+		onFailure() {
+			this.failedPreview = true
+		},
+	},
+}
+</script>
+
+<style lang="scss" scoped>
+
+.template-picker {
+	&__item {
+		display: flex;
+	}
+
+	&__label {
+		display: flex;
+		// Align in the middle of the grid
+		align-items: center;
+		flex: 1 1;
+		flex-direction: column;
+
+		&, * {
+			cursor: pointer;
+			user-select: none;
+		}
+
+		&::before {
+			display: none !important;
+		}
+	}
+
+	&__preview {
+		display: block;
+		overflow: hidden;
+		// Stretch so all entries are the same width
+		flex: 1 1;
+		width: var(--width);
+		min-height: var(--height);
+		max-height: var(--height);
+		padding: 0;
+		border: var(--border) solid var(--color-border);
+		border-radius: var(--border-radius-large);
+
+		input:checked + label > & {
+			border-color: var(--color-primary);
+		}
+
+		&--failed {
+			// Make sure to properly center fallback icon
+			display: flex;
+		}
+	}
+
+	&__image {
+		max-width: 100%;
+		background-color: var(--color-main-background);
+
+		object-fit: cover;
+	}
+
+	// Failed preview, fallback to mime icon
+	&__preview--failed &__image {
+		width: calc(var(--margin) * 8);
+		// Center mime icon
+		margin: auto;
+		background-color: transparent !important;
+
+		object-fit: initial;
+	}
+
+	&__title {
+		overflow: hidden;
+		// also count preview border
+		max-width: calc(var(--width) + 2*2px);
+		padding: var(--margin);
+		white-space: nowrap;
+		text-overflow: ellipsis;
+	}
+}
+
+</style>
diff --git a/src/services/filesSharingServices.js b/src/services/filesSharingServices.js
index 64f28b2f9..218308ba7 100644
--- a/src/services/filesSharingServices.js
+++ b/src/services/filesSharingServices.js
@@ -62,12 +62,16 @@ const getFileTemplates = async () => {
 /**
  * Share a text file to a conversation
  *
- * @param { string } filePath the file path
+ * @param {string} filePath The new file destination path
+ * @param {string} templatePath The template source path
+ * @param {string} templateType The template type e.g 'user'
  * @return { object } the file object
  */
-const createTextFile = async function(filePath) {
+const createTextFile = async function(filePath, templatePath, templateType) {
 	return await axios.post(generateOcsUrl('apps/files/api/v1/templates/create'), {
 		filePath,
+		templatePath,
+		templateType,
 	})
 }