1 files changed, 44 insertions, 0 deletions
diff --git a/src/services/theme_data/iss_serializer.js b/src/services/theme_data/iss_serializer.js
new file mode 100644
index 00000000..959852b7
--- /dev/null
+++ b/src/services/theme_data/iss_serializer.js
@@ -0,0 +1,44 @@
+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':
+            return `  ${directive}: ${value.map(serializeShadow).join(', ')}`
+          default:
+            return `  ${directive}: ${value}`
+        }
+      }
+    })
+
+    return `${header} {\n${content.join(';\n')}\n}`
+  }).filter(x => x).join('\n\n')
+}