use Msg objects

1 files changed, 50 insertions, 0 deletions

diff --git a/src/msg.js b/src/msg.js
new file mode 100644
index 0000000..c0aaf11
--- /dev/null
+++ b/src/msg.js
@@ -0,0 +1,50 @@
+const _updatePatterns = "updatePatterns";
+const _getPatterns = "getPatterns";
+const _updateCalendars = "updateCalendars";
+const _getCalendars = "getCalendars";
+const _getCalEvents = "getCalEvents";
+
+export const msgType = Object.freeze({
+    updatePatterns: Symbol(_updatePatterns),
+    getPatterns: Symbol(_getPatterns),
+    updateCalendars: Symbol(_updateCalendars),
+    getCalendars: Symbol(_getCalendars),
+    getCalEvents: Symbol(_getCalEvents),
+});
+
+function stringifyMsgType(mt) {
+    switch (mt) {
+        case msgType.updatePatterns: return _updatePatterns;
+        case msgType.getPatterns: return _getPatterns;
+        case msgType.updateCalendars: return _updateCalendars;
+        case msgType.getCalendars: return _getCalendars;
+        case msgType.getCalEvents: return _getCalEvents;
+    }
+}
+
+function parseMsgType(s) {
+    switch(s) {
+        case _updatePatterns: return msgType.updatePatterns;
+        case _getPatterns: return msgType.getPatterns;
+        case _updateCalendars: return msgType.updateCalendars;
+        case _getCalendars: return msgType.getCalendars;
+        case _getCalEvents: return msgType.getCalEvents;
+    }
+}
+
+export class Msg {
+    constructor(id, type, data) {
+        this.id = id;
+        this.type = type;
+        this.data = data;
+    }
+    genResp(data) { return new Msg(this.id, this.type, data); }
+    deflate() {
+        return {
+            id: this.id,
+            type: stringifyMsgType(this.type),
+            data: this.data
+        }
+    }
+    static inflate = obj => new Msg(obj.id, parseMsgType(obj.type), obj.data);
+}