add button to set seen flag on front

back/validator/schemas/setFlag-schema.json

@@ -0,0 +1,20 @@
+{
+    "type": "object",
+    "properties": {
+        "mailboxId": {
+            "type": "number"
+        },
+        "messageId": {
+            "type": "number"
+        },
+        "flag": {
+            "type": "string"
+        }
+    },
+    "required": [
+        "mailboxId",
+        "messageId",
+        "flag"
+    ],
+    "additionalProperties": false
+}

back/validator/validator.ts

@@ -8,9 +8,12 @@ import getAccountSchema from "./schemas/getAccounts-schema.json";
 import getRoomSchema from "./schemas/getRooms-schema.json";
 import getMessagesSchema from "./schemas/getMessages-schema.json";
 import getMembersSchema from "./schemas/getMembers-schema.json";
+import setFlagSchema from "./schemas/setFlag-schema.json";
 
 export const validateCreateAccount = ajv.compile(createAccountSchema);
 export const validateGetAccounts = ajv.compile(getAccountSchema);
 export const validateGetRooms = ajv.compile(getRoomSchema);
 export const validateGetMessages = ajv.compile(getMessagesSchema);
 export const validateGetMembers = ajv.compile(getMembersSchema);
+export const validateAddFlag = ajv.compile(setFlagSchema);
+export const validateRemoveFlag = ajv.compile(setFlagSchema);