1 files changed, 48 insertions, 0 deletions

diff --git a/server/lib/live/live-quota-store.ts b/server/lib/live/live-quota-store.ts
new file mode 100644
index 000000000..8ceccde98
--- /dev/null
+++ b/server/lib/live/live-quota-store.ts
@@ -0,0 +1,48 @@
+class LiveQuotaStore {
+
+  private static instance: LiveQuotaStore
+
+  private readonly livesPerUser = new Map<number, { liveId: number, size: number }[]>()
+
+  private constructor () {
+  }
+
+  addNewLive (userId: number, liveId: number) {
+    if (!this.livesPerUser.has(userId)) {
+      this.livesPerUser.set(userId, [])
+    }
+
+    const currentUserLive = { liveId, size: 0 }
+    const livesOfUser = this.livesPerUser.get(userId)
+    livesOfUser.push(currentUserLive)
+  }
+
+  removeLive (userId: number, liveId: number) {
+    const newLivesPerUser = this.livesPerUser.get(userId)
+                                             .filter(o => o.liveId !== liveId)
+
+    this.livesPerUser.set(userId, newLivesPerUser)
+  }
+
+  addQuotaTo (userId: number, liveId: number, size: number) {
+    const lives = this.livesPerUser.get(userId)
+    const live = lives.find(l => l.liveId === liveId)
+
+    live.size += size
+  }
+
+  getLiveQuotaOf (userId: number) {
+    const currentLives = this.livesPerUser.get(userId)
+    if (!currentLives) return 0
+
+    return currentLives.reduce((sum, obj) => sum + obj.size, 0)
+  }
+
+  static get Instance () {
+    return this.instance || (this.instance = new this())
+  }
+}
+
+export {
+  LiveQuotaStore
+}