4 files changed, 260 insertions, 4 deletions
diff --git a/src/services/date_utils/date_utils.js b/src/services/date_utils/date_utils.js
index ed8e1417..69398c0c 100644
--- a/src/services/date_utils/date_utils.js
+++ b/src/services/date_utils/date_utils.js
@@ -6,10 +6,13 @@ export const WEEK = 7 * DAY
 export const MONTH = 30 * DAY
 export const YEAR = 365.25 * DAY
 
-export const relativeTime = (date, nowThreshold = 1) => {
+export const relativeTimeMs = (date) => {
   if (typeof date === 'string') date = Date.parse(date)
+  return Math.abs(Date.now() - date)
+}
+export const relativeTime = (date, nowThreshold = 1) => {
   const round = Date.now() > date ? Math.floor : Math.ceil
-  const d = Math.abs(Date.now() - date)
+  const d = relativeTimeMs(date)
   const r = { num: round(d / YEAR), key: 'time.unit.years' }
   if (d < nowThreshold * SECOND) {
     r.num = 0
@@ -57,3 +60,39 @@ export const secondsToUnit = (unit, amount) => {
     case 'days': return (1000 * amount) / DAY
   }
 }
+
+export const isSameYear = (a, b) => {
+  return a.getFullYear() === b.getFullYear()
+}
+
+export const isSameMonth = (a, b) => {
+  return a.getFullYear() === b.getFullYear() &&
+    a.getMonth() === b.getMonth()
+}
+
+export const isSameDay = (a, b) => {
+  return a.getFullYear() === b.getFullYear() &&
+    a.getMonth() === b.getMonth() &&
+    a.getDate() === b.getDate()
+}
+
+export const durationStrToMs = (str) => {
+  if (typeof str !== 'string') {
+    return 0
+  }
+
+  const unit = str.replace(/[0-9,.]+/, '')
+  const value = str.replace(/[^0-9,.]+/, '')
+  switch (unit) {
+    case 'd':
+      return value * DAY
+    case 'h':
+      return value * HOUR
+    case 'm':
+      return value * MINUTE
+    case 's':
+      return value * SECOND
+    default:
+      return 0
+  }
+}
diff --git a/src/services/theme_data/iss_deserializer.js b/src/services/theme_data/iss_deserializer.js
new file mode 100644
index 00000000..909e9411
--- /dev/null
+++ b/src/services/theme_data/iss_deserializer.js
@@ -0,0 +1,157 @@
+import { flattenDeep } from 'lodash'
+
+const parseShadow = string => {
+  const modes = ['_full', 'inset', 'x', 'y', 'blur', 'spread', 'color', 'alpha']
+  const regexPrep = [
+    // inset keyword (optional)
+    '^(?:(inset)\\s+)?',
+    // x
+    '(?:(-?[0-9]+(?:\\.[0-9]+)?)\\s+)',
+    // y
+    '(?:(-?[0-9]+(?:\\.[0-9]+)?)\\s+)',
+    // blur (optional)
+    '(?:(-?[0-9]+(?:\\.[0-9]+)?)\\s+)?',
+    // spread (optional)
+    '(?:(-?[0-9]+(?:\\.[0-9]+)?)\\s+)?',
+    // either hex, variable or function
+    '(#[0-9a-f]{6}|--[a-z\\-_]+|\\$[a-z\\-()_]+)',
+    // opacity (optional)
+    '(?:\\s+\\/\\s+([0-9]+(?:\\.[0-9]+)?)\\s*)?$'
+  ].join('')
+  const regex = new RegExp(regexPrep, 'gis') // global, (stable) indices, single-string
+  const result = regex.exec(string)
+  if (result == null) {
+    return string
+  } else {
+    const numeric = new Set(['x', 'y', 'blur', 'spread', 'alpha'])
+    const { x, y, blur, spread, alpha, inset, color } = Object.fromEntries(modes.map((mode, i) => {
+      if (numeric.has(mode)) {
+        return [mode, Number(result[i])]
+      } else if (mode === 'inset') {
+        return [mode, !!result[i]]
+      } else {
+        return [mode, result[i]]
+      }
+    }).filter(([k, v]) => v !== false).slice(1))
+
+    return { x, y, blur, spread, color, alpha, inset }
+  }
+}
+// this works nearly the same as HTML tree converter
+const parseIss = (input) => {
+  const buffer = [{ selector: null, content: [] }]
+  let textBuffer = ''
+
+  const getCurrentBuffer = () => {
+    let current = buffer[buffer.length - 1]
+    if (current == null) {
+      current = { selector: null, content: [] }
+    }
+    return current
+  }
+
+  // Processes current line buffer, adds it to output buffer and clears line buffer
+  const flushText = (kind) => {
+    if (textBuffer === '') return
+    if (kind === 'content') {
+      getCurrentBuffer().content.push(textBuffer.trim())
+    } else {
+      getCurrentBuffer().selector = textBuffer.trim()
+    }
+    textBuffer = ''
+  }
+
+  for (let i = 0; i < input.length; i++) {
+    const char = input[i]
+
+    if (char === ';') {
+      flushText('content')
+    } else if (char === '{') {
+      flushText('header')
+    } else if (char === '}') {
+      flushText('content')
+      buffer.push({ selector: null, content: [] })
+      textBuffer = ''
+    } else {
+      textBuffer += char
+    }
+  }
+
+  return buffer
+}
+export const deserialize = (input) => {
+  const ast = parseIss(input)
+  const finalResult = ast.filter(i => i.selector != null).map(item => {
+    const { selector, content } = item
+    let stateCount = 0
+    const selectors = selector.split(/,/g)
+    const result = selectors.map(selector => {
+      const output = { component: '' }
+      let currentDepth = null
+
+      selector.split(/ /g).reverse().forEach((fragment, index, arr) => {
+        const fragmentObject = { component: '' }
+
+        let mode = 'component'
+        for (let i = 0; i < fragment.length; i++) {
+          const char = fragment[i]
+          switch (char) {
+            case '.': {
+              mode = 'variant'
+              fragmentObject.variant = ''
+              break
+            }
+            case ':': {
+              mode = 'state'
+              fragmentObject.state = fragmentObject.state || []
+              stateCount++
+              break
+            }
+            default: {
+              if (mode === 'state') {
+                const currentState = fragmentObject.state[stateCount - 1]
+                if (currentState == null) {
+                  fragmentObject.state.push('')
+                }
+                fragmentObject.state[stateCount - 1] += char
+              } else {
+                fragmentObject[mode] += char
+              }
+            }
+          }
+        }
+        if (currentDepth !== null) {
+          currentDepth.parent = { ...fragmentObject }
+          currentDepth = currentDepth.parent
+        } else {
+          Object.keys(fragmentObject).forEach(key => {
+            output[key] = fragmentObject[key]
+          })
+          if (index !== (arr.length - 1)) {
+            output.parent = { component: '' }
+          }
+          currentDepth = output
+        }
+      })
+
+      output.directives = Object.fromEntries(content.map(d => {
+        const [property, value] = d.split(':')
+        let realValue = value.trim()
+        if (property === 'shadow') {
+          if (realValue === 'none') {
+            realValue = []
+          } else {
+            realValue = value.split(',').map(v => parseShadow(v.trim()))
+          }
+        } if (!Number.isNaN(Number(value))) {
+          realValue = Number(value)
+        }
+        return [property, realValue]
+      }))
+
+      return output
+    })
+    return result
+  })
+  return flattenDeep(finalResult)
+}
diff --git a/src/services/theme_data/iss_serializer.js b/src/services/theme_data/iss_serializer.js
new file mode 100644
index 00000000..8b7cf5d8
--- /dev/null
+++ b/src/services/theme_data/iss_serializer.js
@@ -0,0 +1,48 @@
+import { unroll } from './iss_utils.js'
+
+const serializeShadow = s => {
+  if (typeof s === 'object') {
+    return `${s.inset ? 'inset ' : ''}${s.x} ${s.y} ${s.blur} ${s.spread} ${s.color} / ${s.alpha}`
+  } else {
+    return s
+  }
+}
+
+export const serialize = (ruleset) => {
+  return ruleset.map((rule) => {
+    if (Object.keys(rule.directives || {}).length === 0) return false
+
+    const header = unroll(rule).reverse().map(rule => {
+      const { component } = rule
+      const newVariant = (rule.variant == null || rule.variant === 'normal') ? '' : ('.' + rule.variant)
+      const newState = (rule.state || []).filter(st => st !== 'normal')
+
+      return `${component}${newVariant}${newState.map(st => ':' + st).join('')}`
+    }).join(' ')
+
+    const content = Object.entries(rule.directives).map(([directive, value]) => {
+      if (directive.startsWith('--')) {
+        const [valType, newValue] = value.split('|') // only first one! intentional!
+        switch (valType) {
+          case 'shadow':
+            return `  ${directive}: ${valType.trim()} | ${newValue.map(serializeShadow).map(s => s.trim()).join(', ')}`
+          default:
+            return `  ${directive}: ${valType.trim()} | ${newValue.trim()}`
+        }
+      } else {
+        switch (directive) {
+          case 'shadow':
+            if (value.length > 0) {
+              return `  ${directive}: ${value.map(serializeShadow).join(', ')}`
+            } else {
+              return `  ${directive}: none`
+            }
+          default:
+            return `  ${directive}: ${value}`
+        }
+      }
+    })
+
+    return `${header} {\n${content.join(';\n')}\n}`
+  }).filter(x => x).join('\n\n')
+}
diff --git a/src/services/theme_data/theme_data_3.service.js b/src/services/theme_data/theme_data_3.service.js
index cf58da11..39c8b74f 100644
--- a/src/services/theme_data/theme_data_3.service.js
+++ b/src/services/theme_data/theme_data_3.service.js
@@ -504,9 +504,21 @@ export const init = ({
     console.debug('Eager processing took ' + (t2 - t1) + ' ms')
   }
 
+  // optimization to traverse big-ass array only once instead of twice
+  const eager = []
+  const lazy = []
+
+  result.forEach(x => {
+    if (typeof x === 'function') {
+      lazy.push(x)
+    } else {
+      eager.push(x)
+    }
+  })
+
   return {
-    lazy: result.filter(x => typeof x === 'function'),
-    eager: result.filter(x => typeof x !== 'function'),
+    lazy,
+    eager,
     staticVars,
     engineChecksum
   }