Class tag support, add Adabelle

class.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"log"
 	"time"
 
 	"google.golang.org/api/calendar/v3"
@@ -13,6 +14,7 @@ type Class struct {
 	End string
 	Students []string
 	Days []time.Weekday
+	Tags map[string]string
 	Zoom string
 }
 
@@ -25,6 +27,19 @@ func (c Class) happensOnDay(t time.Time) bool {
 	return false
 }
 
+func (c Class) tagsMatch(t time.Time) bool {
+	for key, value := range c.Tags {
+		tagValue, err := getTagAt(key, t)
+		if err != nil {
+			log.Fatal(err)
+		}
+		if value != tagValue {
+			return false
+		}
+	}
+	return true
+}
+
 func (c Class) buildEvent(t time.Time) *calendar.Event {
 	dateStr := t.Format("2006-01-02")