Add publish script

Set up publish script to configure to multiple repositories.

package.json

@@ -9,23 +9,19 @@
     "src"
   ],
   "publishing": {
-    "master": {
-      "branch": "master",
-      "repository": "https://code.modal.sh/TheoryOfNekomata/react-musical-keyboard.git",
-      "publishConfig": {
-        "registry": "https://js.pack.modal.sh"
-      }
-    },
     "github": {
-      "branch": "github",
       "repository": "https://github.com/Temoto-kun/react-musical-keyboard",
       "publishConfig": {
         "registry": "https://npm.pkg.github.com"
       }
     },
-    "npm": {
-      "branch": "npm",
+    "master": {
       "repository": "https://code.modal.sh/TheoryOfNekomata/react-musical-keyboard.git",
+      "publishConfig": {
+        "registry": "https://js.pack.modal.sh"
+      }
+    },
+    "npm": {
       "publishConfig": {
         "registry": "https://registry.npmjs.com"
       }

publish.sh

@@ -0,0 +1,24 @@
+for branch in $(cat package.json | jq .publishing | jq -r keys[]) ; do
+  git checkout $branch
+
+  rawRepository=$(cat package.json | jq -r .publishing.$branch.repository)
+  repository=$(cat package.json | jq -r .publishing.$branch.repository)
+  currentRepository=$(cat package.json | jq -r .repository)
+
+  if [ $repository = $currentRepository ]; then
+    echo "$( jq --arg repository "$repository" '.repository = $repository' package.json )" > package.json
+    echo "Publishing to primary repository: $repository"
+    git push
+  elif [ $rawRepository = 'null' ]; then
+    echo "$branch has no repository"
+  else
+    echo "$branch is a mirror"
+    echo "$( jq --arg repository "$repository" '.repository = $repository' package.json )" > package.json
+    echo "Publishing to mirror repository: $repository"
+    git push --mirror $currentRepository
+  fi
+
+  registry=$(cat package.json | jq -r .publishing.$branch.publishConfig.registry)
+  echo $registry
+  npm publish --registry=$registry
+done