Merge remote-tracking branch 'upstream/develop' into search-mobile-fixes

* upstream/develop: (176 commits)
  fix chrome
  Prevent html-minifier to remove placeholder comment in index.html template
  Add placeholder to insert server generated metatags. Related to #430
  added condition to check for logined user
  fix gradients and minor artifacts
  keep track of new instance options
  fix old MR
  oof
  get rid of slots
  fix timeago font
  added hide_network option, fixed properties naming
  Fix fetching new users, add storing local users in usersObjects with their screen_name as well as id, so that they could be fetched zero-state with screen-name link.
  improve notification subscription
  Fix typo that prevented scope copy from working.
  Refactor arrays to individual options
  Reset enableFollowsExport to true after 2 sec when an export file is available to download
  added check for activatePanel is function or not
  addressed PR comments
  activate panel on user screen click
  added not preload check so hidden toggles asap
  ...

5 files changed, 629 insertions, 64 deletions

diff --git a/src/services/color_convert/color_convert.js b/src/services/color_convert/color_convert.js
index 13dd8979..7576c518 100644
--- a/src/services/color_convert/color_convert.js
+++ b/src/services/color_convert/color_convert.js
@@ -1,6 +1,15 @@
 import { map } from 'lodash'
 
 const rgb2hex = (r, g, b) => {
+  if (r === null || typeof r === 'undefined') {
+    return undefined
+  }
+  if (r[0] === '#') {
+    return r
+  }
+  if (typeof r === 'object') {
+    ({ r, g, b } = r)
+  }
   [r, g, b] = map([r, g, b], (val) => {
     val = Math.ceil(val)
     val = val < 0 ? 0 : val
@@ -10,6 +19,91 @@ const rgb2hex = (r, g, b) => {
   return `#${((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1)}`
 }
 
+/**
+ * Converts 8-bit RGB component into linear component
+ * https://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
+ * https://www.w3.org/TR/2008/REC-WCAG20-20081211/relative-luminance.xml
+ * https://en.wikipedia.org/wiki/SRGB#The_reverse_transformation
+ *
+ * @param {Number} bit - color component [0..255]
+ * @returns {Number} linear component [0..1]
+ */
+const c2linear = (bit) => {
+  // W3C gives 0.03928 while wikipedia states 0.04045
+  // what those magical numbers mean - I don't know.
+  // something about gamma-correction, i suppose.
+  // Sticking with W3C example.
+  const c = bit / 255
+  if (c < 0.03928) {
+    return c / 12.92
+  } else {
+    return Math.pow((c + 0.055) / 1.055, 2.4)
+  }
+}
+
+/**
+ * Converts sRGB into linear RGB
+ * @param {Object} srgb - sRGB color
+ * @returns {Object} linear rgb color
+ */
+const srgbToLinear = (srgb) => {
+  return 'rgb'.split('').reduce((acc, c) => { acc[c] = c2linear(srgb[c]); return acc }, {})
+}
+
+/**
+ * Calculates relative luminance for given color
+ * https://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
+ * https://www.w3.org/TR/2008/REC-WCAG20-20081211/relative-luminance.xml
+ *
+ * @param {Object} srgb - sRGB color
+ * @returns {Number} relative luminance
+ */
+const relativeLuminance = (srgb) => {
+  const {r, g, b} = srgbToLinear(srgb)
+  return 0.2126 * r + 0.7152 * g + 0.0722 * b
+}
+
+/**
+ * Generates color ratio between two colors. Order is unimporant
+ * https://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef
+ *
+ * @param {Object} a - sRGB color
+ * @param {Object} b - sRGB color
+ * @returns {Number} color ratio
+ */
+const getContrastRatio = (a, b) => {
+  const la = relativeLuminance(a)
+  const lb = relativeLuminance(b)
+  const [l1, l2] = la > lb ? [la, lb] : [lb, la]
+
+  return (l1 + 0.05) / (l2 + 0.05)
+}
+
+/**
+ * This performs alpha blending between solid background and semi-transparent foreground
+ *
+ * @param {Object} fg - top layer color
+ * @param {Number} fga - top layer's alpha
+ * @param {Object} bg - bottom layer color
+ * @returns {Object} sRGB of resulting color
+ */
+const alphaBlend = (fg, fga, bg) => {
+  if (fga === 1 || typeof fga === 'undefined') return fg
+  return 'rgb'.split('').reduce((acc, c) => {
+    // Simplified https://en.wikipedia.org/wiki/Alpha_compositing#Alpha_blending
+    // for opaque bg and transparent fg
+    acc[c] = (fg[c] * fga + bg[c] * (1 - fga))
+    return acc
+  }, {})
+}
+
+const invert = (rgb) => {
+  return 'rgb'.split('').reduce((acc, c) => {
+    acc[c] = 255 - rgb[c]
+    return acc
+  }, {})
+}
+
 const hex2rgb = (hex) => {
   const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex)
   return result ? {
@@ -19,16 +113,18 @@ const hex2rgb = (hex) => {
   } : null
 }
 
-const rgbstr2hex = (rgb) => {
-  if (rgb[0] === '#') {
-    return rgb
-  }
-  rgb = rgb.match(/\d+/g)
-  return `#${((Number(rgb[0]) << 16) + (Number(rgb[1]) << 8) + Number(rgb[2])).toString(16)}`
+const mixrgb = (a, b) => {
+  return Object.keys(a).reduce((acc, k) => {
+    acc[k] = (a[k] + b[k]) / 2
+    return acc
+  }, {})
 }
 
 export {
   rgb2hex,
   hex2rgb,
-  rgbstr2hex
+  mixrgb,
+  invert,
+  getContrastRatio,
+  alphaBlend
 }
diff --git a/src/services/file_size_format/file_size_format.js b/src/services/file_size_format/file_size_format.js
new file mode 100644
index 00000000..add56ee0
--- /dev/null
+++ b/src/services/file_size_format/file_size_format.js
@@ -0,0 +1,17 @@
+const fileSizeFormat = (num) => {
+  var exponent
+  var unit
+  var units = ['B', 'KiB', 'MiB', 'GiB', 'TiB']
+  if (num < 1) {
+    return num + ' ' + units[0]
+  }
+
+  exponent = Math.min(Math.floor(Math.log(num) / Math.log(1024)), units.length - 1)
+  num = (num / Math.pow(1024, exponent)).toFixed(2) * 1
+  unit = units[exponent]
+  return {num: num, unit: unit}
+}
+const fileSizeFormatService = {
+  fileSizeFormat
+}
+export default fileSizeFormatService
diff --git a/src/services/push/push.js b/src/services/push/push.js
new file mode 100644
index 00000000..1ac304d1
--- /dev/null
+++ b/src/services/push/push.js
@@ -0,0 +1,69 @@
+import runtime from 'serviceworker-webpack-plugin/lib/runtime'
+
+function urlBase64ToUint8Array (base64String) {
+  const padding = '='.repeat((4 - base64String.length % 4) % 4)
+  const base64 = (base64String + padding)
+    .replace(/-/g, '+')
+    .replace(/_/g, '/')
+
+  const rawData = window.atob(base64)
+  return Uint8Array.from([...rawData].map((char) => char.charCodeAt(0)))
+}
+
+function isPushSupported () {
+  return 'serviceWorker' in navigator && 'PushManager' in window
+}
+
+function registerServiceWorker () {
+  return runtime.register()
+    .catch((err) => console.error('Unable to register service worker.', err))
+}
+
+function subscribe (registration, isEnabled, vapidPublicKey) {
+  if (!isEnabled) return Promise.reject(new Error('Web Push is disabled in config'))
+  if (!vapidPublicKey) return Promise.reject(new Error('VAPID public key is not found'))
+
+  const subscribeOptions = {
+    userVisibleOnly: true,
+    applicationServerKey: urlBase64ToUint8Array(vapidPublicKey)
+  }
+  return registration.pushManager.subscribe(subscribeOptions)
+}
+
+function sendSubscriptionToBackEnd (subscription, token) {
+  return window.fetch('/api/v1/push/subscription/', {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+      'Authorization': `Bearer ${token}`
+    },
+    body: JSON.stringify({
+      subscription,
+      data: {
+        alerts: {
+          follow: true,
+          favourite: true,
+          mention: true,
+          reblog: true
+        }
+      }
+    })
+  })
+    .then((response) => {
+      if (!response.ok) throw new Error('Bad status code from server.')
+      return response.json()
+    })
+    .then((responseData) => {
+      if (!responseData.id) throw new Error('Bad response from server.')
+      return responseData
+    })
+}
+
+export default function registerPushNotifications (isEnabled, vapidPublicKey, token) {
+  if (isPushSupported()) {
+    registerServiceWorker()
+      .then((registration) => subscribe(registration, isEnabled, vapidPublicKey))
+      .then((subscription) => sendSubscriptionToBackEnd(subscription, token))
+      .catch((e) => console.warn(`Failed to setup Web Push Notifications: ${e.message}`))
+  }
+}
diff --git a/src/services/style_setter/style_setter.js b/src/services/style_setter/style_setter.js
index 493d444e..10e7ed9b 100644
--- a/src/services/style_setter/style_setter.js
+++ b/src/services/style_setter/style_setter.js
@@ -1,5 +1,6 @@
 import { times } from 'lodash'
-import { rgb2hex, hex2rgb } from '../color_convert/color_convert.js'
+import { brightness, invertLightness, convert, contrastRatio } from 'chromatism'
+import { rgb2hex, hex2rgb, mixrgb, getContrastRatio, alphaBlend } from '../color_convert/color_convert.js'
 
 // While this is not used anymore right now, I left it in if we want to do custom
 // styles that aren't just colors, so user can pick from a few different distinct
@@ -39,8 +40,6 @@ const setStyle = (href, commit) => {
       colors[name] = color
     })
 
-    commit('setOption', { name: 'colors', value: colors })
-
     body.removeChild(baseEl)
 
     const styleEl = document.createElement('style')
@@ -53,7 +52,27 @@ const setStyle = (href, commit) => {
   cssEl.addEventListener('load', setDynamic)
 }
 
-const setColors = (col, commit) => {
+const rgb2rgba = function (rgba) {
+  return `rgba(${rgba.r}, ${rgba.g}, ${rgba.b}, ${rgba.a})`
+}
+
+const getTextColor = function (bg, text, preserve) {
+  const bgIsLight = convert(bg).hsl.l > 50
+  const textIsLight = convert(text).hsl.l > 50
+
+  if ((bgIsLight && textIsLight) || (!bgIsLight && !textIsLight)) {
+    const base = typeof text.a !== 'undefined' ? { a: text.a } : {}
+    const result = Object.assign(base, invertLightness(text).rgb)
+    if (!preserve && getContrastRatio(bg, result) < 4.5) {
+      return contrastRatio(bg, text).rgb
+    }
+    return result
+  }
+  return text
+}
+
+const applyTheme = (input, commit) => {
+  const { rules, theme } = generatePreset(input)
   const head = document.head
   const body = document.body
   body.style.display = 'none'
@@ -62,56 +81,411 @@ const setColors = (col, commit) => {
   head.appendChild(styleEl)
   const styleSheet = styleEl.sheet
 
-  const isDark = (col.text.r + col.text.g + col.text.b) > (col.bg.r + col.bg.g + col.bg.b)
-  let colors = {}
-  let radii = {}
+  styleSheet.toString()
+  styleSheet.insertRule(`body { ${rules.radii} }`, 'index-max')
+  styleSheet.insertRule(`body { ${rules.colors} }`, 'index-max')
+  styleSheet.insertRule(`body { ${rules.shadows} }`, 'index-max')
+  styleSheet.insertRule(`body { ${rules.fonts} }`, 'index-max')
+  body.style.display = 'initial'
 
-  const mod = isDark ? -10 : 10
+  // commit('setOption', { name: 'colors', value: htmlColors })
+  // commit('setOption', { name: 'radii', value: radii })
+  commit('setOption', { name: 'customTheme', value: input })
+  commit('setOption', { name: 'colors', value: theme.colors })
+}
 
-  colors.bg = rgb2hex(col.bg.r, col.bg.g, col.bg.b)                         // background
-  colors.lightBg = rgb2hex((col.bg.r + col.fg.r) / 2, (col.bg.g + col.fg.g) / 2, (col.bg.b + col.fg.b) / 2) // hilighted bg
-  colors.btn = rgb2hex(col.fg.r, col.fg.g, col.fg.b)                         // panels & buttons
-  colors.input = `rgba(${col.fg.r}, ${col.fg.g}, ${col.fg.b}, .5)`
-  colors.border = rgb2hex(col.fg.r - mod, col.fg.g - mod, col.fg.b - mod)       // borders
-  colors.faint = `rgba(${col.text.r}, ${col.text.g}, ${col.text.b}, .5)`
-  colors.fg = rgb2hex(col.text.r, col.text.g, col.text.b)                   // text
-  colors.lightFg = rgb2hex(col.text.r - mod * 5, col.text.g - mod * 5, col.text.b - mod * 5) // strong text
+const getCssShadow = (input, usesDropShadow) => {
+  if (input.length === 0) {
+    return 'none'
+  }
 
-  colors['base07'] = rgb2hex(col.text.r - mod * 2, col.text.g - mod * 2, col.text.b - mod * 2)
+  return input
+    .filter(_ => usesDropShadow ? _.inset : _)
+    .map((shad) => [
+      shad.x,
+      shad.y,
+      shad.blur,
+      shad.spread
+    ].map(_ => _ + 'px').concat([
+      getCssColor(shad.color, shad.alpha),
+      shad.inset ? 'inset' : ''
+    ]).join(' ')).join(', ')
+}
 
-  colors.link = rgb2hex(col.link.r, col.link.g, col.link.b)                   // links
-  colors.icon = rgb2hex((col.bg.r + col.text.r) / 2, (col.bg.g + col.text.g) / 2, (col.bg.b + col.text.b) / 2) // icons
+const getCssShadowFilter = (input) => {
+  if (input.length === 0) {
+    return 'none'
+  }
 
-  colors.cBlue = col.cBlue && rgb2hex(col.cBlue.r, col.cBlue.g, col.cBlue.b)
-  colors.cRed = col.cRed && rgb2hex(col.cRed.r, col.cRed.g, col.cRed.b)
-  colors.cGreen = col.cGreen && rgb2hex(col.cGreen.r, col.cGreen.g, col.cGreen.b)
-  colors.cOrange = col.cOrange && rgb2hex(col.cOrange.r, col.cOrange.g, col.cOrange.b)
+  return input
+  // drop-shadow doesn't support inset or spread
+    .filter((shad) => !shad.inset && Number(shad.spread) === 0)
+    .map((shad) => [
+      shad.x,
+      shad.y,
+      // drop-shadow's blur is twice as strong compared to box-shadow
+      shad.blur / 2
+    ].map(_ => _ + 'px').concat([
+      getCssColor(shad.color, shad.alpha)
+    ]).join(' '))
+    .map(_ => `drop-shadow(${_})`)
+    .join(' ')
+}
 
-  colors.cAlertRed = col.cRed && `rgba(${col.cRed.r}, ${col.cRed.g}, ${col.cRed.b}, .5)`
+const getCssColor = (input, a) => {
+  let rgb = {}
+  if (typeof input === 'object') {
+    rgb = input
+  } else if (typeof input === 'string') {
+    if (input.startsWith('#')) {
+      rgb = hex2rgb(input)
+    } else if (input.startsWith('--')) {
+      return `var(${input})`
+    } else {
+      return input
+    }
+  }
+  return rgb2rgba({ ...rgb, a })
+}
 
-  radii.btnRadius = col.btnRadius
-  radii.inputRadius = col.inputRadius
-  radii.panelRadius = col.panelRadius
-  radii.avatarRadius = col.avatarRadius
-  radii.avatarAltRadius = col.avatarAltRadius
-  radii.tooltipRadius = col.tooltipRadius
-  radii.attachmentRadius = col.attachmentRadius
+const generateColors = (input) => {
+  const colors = {}
+  const opacity = Object.assign({
+    alert: 0.5,
+    input: 0.5,
+    faint: 0.5
+  }, Object.entries(input.opacity || {}).reduce((acc, [k, v]) => {
+    if (typeof v !== 'undefined') {
+      acc[k] = v
+    }
+    return acc
+  }, {}))
+  const col = Object.entries(input.colors || input).reduce((acc, [k, v]) => {
+    if (typeof v === 'object') {
+      acc[k] = v
+    } else {
+      acc[k] = hex2rgb(v)
+    }
+    return acc
+  }, {})
 
-  styleSheet.toString()
-  styleSheet.insertRule(`body { ${Object.entries(colors).filter(([k, v]) => v).map(([k, v]) => `--${k}: ${v}`).join(';')} }`, 'index-max')
-  styleSheet.insertRule(`body { ${Object.entries(radii).filter(([k, v]) => v).map(([k, v]) => `--${k}: ${v}px`).join(';')} }`, 'index-max')
-  body.style.display = 'initial'
+  const isLightOnDark = convert(col.bg).hsl.l < convert(col.text).hsl.l
+  const mod = isLightOnDark ? 1 : -1
+
+  colors.text = col.text
+  colors.lightText = brightness(20 * mod, colors.text).rgb
+  colors.link = col.link
+  colors.faint = col.faint || Object.assign({}, col.text)
+
+  colors.bg = col.bg
+  colors.lightBg = col.lightBg || brightness(5, colors.bg).rgb
+
+  colors.fg = col.fg
+  colors.fgText = col.fgText || getTextColor(colors.fg, colors.text)
+  colors.fgLink = col.fgLink || getTextColor(colors.fg, colors.link, true)
+
+  colors.border = col.border || brightness(2 * mod, colors.fg).rgb
+
+  colors.btn = col.btn || Object.assign({}, col.fg)
+  colors.btnText = col.btnText || getTextColor(colors.btn, colors.fgText)
+
+  colors.input = col.input || Object.assign({}, col.fg)
+  colors.inputText = col.inputText || getTextColor(colors.input, colors.lightText)
+
+  colors.panel = col.panel || Object.assign({}, col.fg)
+  colors.panelText = col.panelText || getTextColor(colors.panel, colors.fgText)
+  colors.panelLink = col.panelLink || getTextColor(colors.panel, colors.fgLink)
+  colors.panelFaint = col.panelFaint || getTextColor(colors.panel, colors.faint)
 
-  commit('setOption', { name: 'colors', value: colors })
-  commit('setOption', { name: 'radii', value: radii })
-  commit('setOption', { name: 'customTheme', value: col })
+  colors.topBar = col.topBar || Object.assign({}, col.fg)
+  colors.topBarText = col.topBarText || getTextColor(colors.topBar, colors.fgText)
+  colors.topBarLink = col.topBarLink || getTextColor(colors.topBar, colors.fgLink)
+
+  colors.faintLink = col.faintLink || Object.assign({}, col.link)
+
+  colors.icon = mixrgb(colors.bg, colors.text)
+
+  colors.cBlue = col.cBlue || hex2rgb('#0000FF')
+  colors.cRed = col.cRed || hex2rgb('#FF0000')
+  colors.cGreen = col.cGreen || hex2rgb('#00FF00')
+  colors.cOrange = col.cOrange || hex2rgb('#E3FF00')
+
+  colors.alertError = col.alertError || Object.assign({}, colors.cRed)
+  colors.alertErrorText = getTextColor(alphaBlend(colors.alertError, opacity.alert, colors.bg), colors.text)
+  colors.alertErrorPanelText = getTextColor(alphaBlend(colors.alertError, opacity.alert, colors.panel), colors.panelText)
+
+  colors.badgeNotification = col.badgeNotification || Object.assign({}, colors.cRed)
+  colors.badgeNotificationText = contrastRatio(colors.badgeNotification).rgb
+
+  Object.entries(opacity).forEach(([ k, v ]) => {
+    if (typeof v === 'undefined') return
+    if (k === 'alert') {
+      colors.alertError.a = v
+      return
+    }
+    if (k === 'faint') {
+      colors[k + 'Link'].a = v
+      colors['panelFaint'].a = v
+    }
+    if (k === 'bg') {
+      colors['lightBg'].a = v
+    }
+    if (colors[k]) {
+      colors[k].a = v
+    } else {
+      console.error('Wrong key ' + k)
+    }
+  })
+
+  const htmlColors = Object.entries(colors)
+        .reduce((acc, [k, v]) => {
+          if (!v) return acc
+          acc.solid[k] = rgb2hex(v)
+          acc.complete[k] = typeof v.a === 'undefined' ? rgb2hex(v) : rgb2rgba(v)
+          return acc
+        }, { complete: {}, solid: {} })
+  return {
+    rules: {
+      colors: Object.entries(htmlColors.complete)
+        .filter(([k, v]) => v)
+        .map(([k, v]) => `--${k}: ${v}`)
+        .join(';')
+    },
+    theme: {
+      colors: htmlColors.solid,
+      opacity
+    }
+  }
 }
 
-const setPreset = (val, commit) => {
-  window.fetch('/static/styles.json')
+const generateRadii = (input) => {
+  let inputRadii = input.radii || {}
+  // v1 -> v2
+  if (typeof input.btnRadius !== 'undefined') {
+    inputRadii = Object
+      .entries(input)
+      .filter(([k, v]) => k.endsWith('Radius'))
+      .reduce((acc, e) => { acc[e[0].split('Radius')[0]] = e[1]; return acc }, {})
+  }
+  const radii = Object.entries(inputRadii).filter(([k, v]) => v).reduce((acc, [k, v]) => {
+    acc[k] = v
+    return acc
+  }, {
+    btn: 4,
+    input: 4,
+    checkbox: 2,
+    panel: 10,
+    avatar: 5,
+    avatarAlt: 50,
+    tooltip: 2,
+    attachment: 5
+  })
+
+  return {
+    rules: {
+      radii: Object.entries(radii).filter(([k, v]) => v).map(([k, v]) => `--${k}Radius: ${v}px`).join(';')
+    },
+    theme: {
+      radii
+    }
+  }
+}
+
+const generateFonts = (input) => {
+  const fonts = Object.entries(input.fonts || {}).filter(([k, v]) => v).reduce((acc, [k, v]) => {
+    acc[k] = Object.entries(v).filter(([k, v]) => v).reduce((acc, [k, v]) => {
+      acc[k] = v
+      return acc
+    }, acc[k])
+    return acc
+  }, {
+    interface: {
+      family: 'sans-serif'
+    },
+    input: {
+      family: 'inherit'
+    },
+    post: {
+      family: 'inherit'
+    },
+    postCode: {
+      family: 'monospace'
+    }
+  })
+
+  return {
+    rules: {
+      fonts: Object
+        .entries(fonts)
+        .filter(([k, v]) => v)
+        .map(([k, v]) => `--${k}Font: ${v.family}`).join(';')
+    },
+    theme: {
+      fonts
+    }
+  }
+}
+
+const generateShadows = (input) => {
+  const border = (top, shadow) => ({
+    x: 0,
+    y: top ? 1 : -1,
+    blur: 0,
+    spread: 0,
+    color: shadow ? '#000000' : '#FFFFFF',
+    alpha: 0.2,
+    inset: true
+  })
+  const buttonInsetFakeBorders = [border(true, false), border(false, true)]
+  const inputInsetFakeBorders = [border(true, true), border(false, false)]
+  const hoverGlow = {
+    x: 0,
+    y: 0,
+    blur: 4,
+    spread: 0,
+    color: '--faint',
+    alpha: 1
+  }
+
+  const shadows = {
+    panel: [{
+      x: 1,
+      y: 1,
+      blur: 4,
+      spread: 0,
+      color: '#000000',
+      alpha: 0.6
+    }],
+    topBar: [{
+      x: 0,
+      y: 0,
+      blur: 4,
+      spread: 0,
+      color: '#000000',
+      alpha: 0.6
+    }],
+    popup: [{
+      x: 2,
+      y: 2,
+      blur: 3,
+      spread: 0,
+      color: '#000000',
+      alpha: 0.5
+    }],
+    avatar: [{
+      x: 0,
+      y: 1,
+      blur: 8,
+      spread: 0,
+      color: '#000000',
+      alpha: 0.7
+    }],
+    avatarStatus: [],
+    panelHeader: [],
+    button: [{
+      x: 0,
+      y: 0,
+      blur: 2,
+      spread: 0,
+      color: '#000000',
+      alpha: 1
+    }, ...buttonInsetFakeBorders],
+    buttonHover: [hoverGlow, ...buttonInsetFakeBorders],
+    buttonPressed: [hoverGlow, ...inputInsetFakeBorders],
+    input: [...inputInsetFakeBorders, {
+      x: 0,
+      y: 0,
+      blur: 2,
+      inset: true,
+      spread: 0,
+      color: '#000000',
+      alpha: 1
+    }],
+    ...(input.shadows || {})
+  }
+
+  return {
+    rules: {
+      shadows: Object
+        .entries(shadows)
+      // TODO for v2.1: if shadow doesn't have non-inset shadows with spread > 0 - optionally
+      // convert all non-inset shadows into filter: drop-shadow() to boost performance
+        .map(([k, v]) => [
+          `--${k}Shadow: ${getCssShadow(v)}`,
+          `--${k}ShadowFilter: ${getCssShadowFilter(v)}`,
+          `--${k}ShadowInset: ${getCssShadow(v, true)}`
+        ].join(';'))
+        .join(';')
+    },
+    theme: {
+      shadows
+    }
+  }
+}
+
+const composePreset = (colors, radii, shadows, fonts) => {
+  return {
+    rules: {
+      ...shadows.rules,
+      ...colors.rules,
+      ...radii.rules,
+      ...fonts.rules
+    },
+    theme: {
+      ...shadows.theme,
+      ...colors.theme,
+      ...radii.theme,
+      ...fonts.theme
+    }
+  }
+}
+
+const generatePreset = (input) => {
+  const shadows = generateShadows(input)
+  const colors = generateColors(input)
+  const radii = generateRadii(input)
+  const fonts = generateFonts(input)
+
+  return composePreset(colors, radii, shadows, fonts)
+}
+
+const getThemes = () => {
+  return window.fetch('/static/styles.json')
     .then((data) => data.json())
     .then((themes) => {
-      const theme = themes[val] ? themes[val] : themes['pleroma-dark']
+      return Promise.all(Object.entries(themes).map(([k, v]) => {
+        if (typeof v === 'object') {
+          return Promise.resolve([k, v])
+        } else if (typeof v === 'string') {
+          return window.fetch(v)
+            .then((data) => data.json())
+            .then((theme) => {
+              return [k, theme]
+            })
+            .catch((e) => {
+              console.error(e)
+              return []
+            })
+        }
+      }))
+    })
+    .then((promises) => {
+      return promises
+        .filter(([k, v]) => v)
+        .reduce((acc, [k, v]) => {
+          acc[k] = v
+          return acc
+        }, {})
+    })
+}
+
+const setPreset = (val, commit) => {
+  getThemes().then((themes) => {
+    const theme = themes[val] ? themes[val] : themes['pleroma-dark']
+    const isV1 = Array.isArray(theme)
+    const data = isV1 ? {} : theme.theme
+
+    if (isV1) {
       const bgRgb = hex2rgb(theme[1])
       const fgRgb = hex2rgb(theme[2])
       const textRgb = hex2rgb(theme[3])
@@ -122,7 +496,7 @@ const setPreset = (val, commit) => {
       const cBlueRgb = hex2rgb(theme[7] || '#0000FF')
       const cOrangeRgb = hex2rgb(theme[8] || '#E3FF00')
 
-      const col = {
+      data.colors = {
         bg: bgRgb,
         fg: fgRgb,
         text: textRgb,
@@ -132,23 +506,32 @@ const setPreset = (val, commit) => {
         cGreen: cGreenRgb,
         cOrange: cOrangeRgb
       }
+    }
 
-      // This is a hack, this function is only called during initial load.
-      // We want to cancel loading the theme from config.json if we're already
-      // loading a theme from the persisted state.
-      // Needed some way of dealing with the async way of things.
-      // load config -> set preset -> wait for styles.json to load ->
-      // load persisted state -> set colors -> styles.json loaded -> set colors
-      if (!window.themeLoaded) {
-        setColors(col, commit)
-      }
-    })
+    // This is a hack, this function is only called during initial load.
+    // We want to cancel loading the theme from config.json if we're already
+    // loading a theme from the persisted state.
+    // Needed some way of dealing with the async way of things.
+    // load config -> set preset -> wait for styles.json to load ->
+    // load persisted state -> set colors -> styles.json loaded -> set colors
+    if (!window.themeLoaded) {
+      applyTheme(data, commit)
+    }
+  })
 }
 
-const StyleSetter = {
+export {
   setStyle,
   setPreset,
-  setColors
+  applyTheme,
+  getTextColor,
+  generateColors,
+  generateRadii,
+  generateShadows,
+  generateFonts,
+  generatePreset,
+  getThemes,
+  composePreset,
+  getCssShadow,
+  getCssShadowFilter
 }
-
-export default StyleSetter
diff --git a/src/services/user_highlighter/user_highlighter.js b/src/services/user_highlighter/user_highlighter.js
index ebb25eca..f6ddfb9c 100644
--- a/src/services/user_highlighter/user_highlighter.js
+++ b/src/services/user_highlighter/user_highlighter.js
@@ -11,7 +11,7 @@ const highlightStyle = (prefs) => {
   if (type === 'striped') {
     return {
       backgroundImage: [
-        'repeating-linear-gradient(-45deg,',
+        'repeating-linear-gradient(135deg,',
         `${tintColor} ,`,
         `${tintColor} 20px,`,
         `${tintColor2} 20px,`,