Support Reminder events

Move code to schedule to have event independent from NotificationPlatform

internal/notifier/model/model.go

@@ -1,6 +1,11 @@
 package model
 
-import "time"
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"time"
+)
 
 type Notification struct {
 	ID           int                  `json:"id" gorm:"primaryKey"`
@@ -13,7 +18,7 @@ type Notification struct {
 	TypeID       NotificationPlatform `json:"type" gorm:"column:type"`
 	ScheduledFor time.Time            `json:"scheduled_for" gorm:"column:scheduled_for;index"`
 	CreatedAt    time.Time            `json:"created_at" gorm:"column:created_at"`
-	RawEvent     interface{}          `json:"raw_event" gorm:"column:raw_event;type:jsonb"`
+	RawEvent     JSONB                `json:"raw_event" gorm:"column:raw_event;type:jsonb"`
 }
 type NotificationDetails struct {
 	Notification
@@ -32,3 +37,24 @@ const (
 	NotificationPlatformTelegram
 	NotificationPlatformPushover
 )
+
+type JSONB map[string]interface{}
+
+func (j JSONB) Value() (driver.Value, error) {
+	value, err := json.Marshal(j)
+	if err != nil {
+		return nil, err
+	}
+	return string(value), nil
+}
+
+func (j *JSONB) Scan(value interface{}) error {
+	switch v := value.(type) {
+	case []byte:
+		return json.Unmarshal(v, j)
+	case string:
+		return json.Unmarshal([]byte(v), j)
+	default:
+		return errors.New("type assertion to []byte or string failed")
+	}
+}