refactor: upload vuex module

frontend/src/store/modules/upload.js

@@ -0,0 +1,34 @@
+import Vue from 'vue'
+
+const state = {
+  id: 0,
+  count: 0,
+  size: 0,
+  progress: []
+}
+
+const mutations = {
+  incrementId: (state) => {
+    state.id = state.id + 1
+  },
+  incrementSize: (state, value) => {
+    state.size = state.size + value
+  },
+  incrementCount: (state) => {
+    state.count = state.count + 1
+  },
+  decreaseCount: (state) => {
+    state.count = state.count - 1
+  },
+  setProgress(state, { id, loaded }) {
+    Vue.set(state.progress, id, loaded)
+  },
+  reset: (state) => {
+    state.id = 0
+    state.size = 0
+    state.count = 0
+    state.progress = []
+  }
+}
+
+export default { state, mutations, namespaced: true }