Settings backup/restore + small fixes

Another stepping stone for settings sync, should enable easier debug for us and manual sync solution for the impatient. Also should make wiping localstorage less of a problem since it also backs up user highlights which don't have proper UI for them.

Major:

• Changed ImportExport component into a service since it's mostly logic/direct DOM-manip, not much of markup going on, makes it more reusable and avoid mess with slots
• Implemented settings save/restore function
  • New dropdown button in modal footer: save, save with theme, restore
  • Settings saved with array version - current version [1, 0] - works similarly to semver but in array, for future-proofing it will refuse to load settings with major version != 1 (i.e. [2, 0]) but will work different minor version, i.e. [1, 1].
  • Separate control for theme saving since theme data is quite heavy.
    • For future we might add dialog box asking if user wants to import theme as well if it's present
  • Restoring goes over supported properties and updates them using setOption with data found in file. Minor stuff:
• one more fix for "p's broken theme" fucking up theme editor and making it mostly unusable
• changed "Peek"/"Close" buttons to use icons instead, feels a bit more natural and less confusing given that there are now button in footer too.
• panel footers no longer use panel header colors, it just looked silly and didn't really work with some themes (redmond), cleaned up their styles a bit

src/components/settings_modal/settings_modal.js

@@ -2,10 +2,55 @@ import Modal from 'src/components/modal/modal.vue'
 import PanelLoading from 'src/components/panel_loading/panel_loading.vue'
 import AsyncComponentError from 'src/components/async_component_error/async_component_error.vue'
 import getResettableAsyncComponent from 'src/services/resettable_async_component.js'
+import Popover from '../popover/popover.vue'
+import { library } from '@fortawesome/fontawesome-svg-core'
+import { cloneDeep } from 'lodash'
+import {
+  newImporter,
+  newExporter
+} from 'src/services/export_import/export_import.js'
+import {
+  faTimes,
+  faFileUpload,
+  faFileDownload,
+  faChevronDown
+} from '@fortawesome/free-solid-svg-icons'
+import {
+  faWindowMinimize
+} from '@fortawesome/free-regular-svg-icons'
+
+const PLEROMAFE_SETTINGS_MAJOR_VERSION = 1
+const PLEROMAFE_SETTINGS_MINOR_VERSION = 0
+
+library.add(
+  faTimes,
+  faWindowMinimize,
+  faFileUpload,
+  faFileDownload,
+  faChevronDown
+)
 
 const SettingsModal = {
+  data () {
+    return {
+      dataImporter: newImporter({
+        validator: this.importValidator,
+        onImport: this.onImport,
+        onImportFailure: this.onImportFailure
+      }),
+      dataThemeExporter: newExporter({
+        filename: 'pleromafe_settings.full',
+        getExportedObject: () => this.generateExport(true)
+      }),
+      dataExporter: newExporter({
+        filename: 'pleromafe_settings',
+        getExportedObject: () => this.generateExport()
+      })
+    }
+  },
   components: {
     Modal,
+    Popover,
     SettingsModalContent: getResettableAsyncComponent(
       () => import('./settings_modal_content.vue'),
       {
@@ -21,6 +66,85 @@ const SettingsModal = {
     },
     peekModal () {
       this.$store.dispatch('togglePeekSettingsModal')
+    },
+    importValidator (data) {
+      if (!Array.isArray(data._pleroma_settings_version)) {
+        return {
+          messageKey: 'settings.file_import_export.invalid_file'
+        }
+      }
+
+      const [major, minor] = data._pleroma_settings_version
+
+      if (major > PLEROMAFE_SETTINGS_MAJOR_VERSION) {
+        return {
+          messageKey: 'settings.file_export_import.errors.file_too_new',
+          messageArgs: {
+            fileMajor: major,
+            feMajor: PLEROMAFE_SETTINGS_MAJOR_VERSION
+          }
+        }
+      }
+
+      if (major < PLEROMAFE_SETTINGS_MAJOR_VERSION) {
+        return {
+          messageKey: 'settings.file_export_import.errors.file_too_old',
+          messageArgs: {
+            fileMajor: major,
+            feMajor: PLEROMAFE_SETTINGS_MAJOR_VERSION
+          }
+        }
+      }
+
+      if (minor > PLEROMAFE_SETTINGS_MINOR_VERSION) {
+        this.$store.dispatch('pushGlobalNotice', {
+          level: 'warning',
+          messageKey: 'settings.file_export_import.errors.file_slightly_new'
+        })
+      }
+
+      return true
+    },
+    onImportFailure (result) {
+      if (result.error) {
+        this.$store.dispatch('pushGlobalNotice', { messageKey: 'settings.invalid_settings_imported', level: 'error' })
+      } else {
+        this.$store.dispatch('pushGlobalNotice', { ...result.validationResult, level: 'error' })
+      }
+    },
+    onImport (data) {
+      if (data) { this.$store.dispatch('loadSettings', data) }
+    },
+    restore () {
+      this.dataImporter.importData()
+    },
+    backup () {
+      this.dataExporter.exportData()
+    },
+    backupWithTheme () {
+      this.dataThemeExporter.exportData()
+    },
+    generateExport (theme = false) {
+      const { config } = this.$store.state
+      let sample = config
+      if (!theme) {
+        const ignoreList = new Set([
+          'customTheme',
+          'customThemeSource',
+          'colors'
+        ])
+        sample = Object.fromEntries(
+          Object
+            .entries(sample)
+            .filter(([key]) => !ignoreList.has(key))
+        )
+      }
+      const clone = cloneDeep(sample)
+      clone._pleroma_settings_version = [
+        PLEROMAFE_SETTINGS_MAJOR_VERSION,
+        PLEROMAFE_SETTINGS_MINOR_VERSION
+      ]
+      return clone
     }
   },
   computed: {