feat: persist user creation date (resolve #31)

models/shared.go

@@ -1,6 +1,14 @@
 package models
 
-import "github.com/jinzhu/gorm"
+import (
+	"database/sql/driver"
+	"errors"
+	"fmt"
+	"github.com/jinzhu/gorm"
+	"strconv"
+	"strings"
+	"time"
+)
 
 const (
 	UserKey       = "user"
@@ -14,3 +22,47 @@ type KeyStringValue struct {
 	Key   string `gorm:"primary_key"`
 	Value string `gorm:"type:text"`
 }
+
+func (j *CustomTime) UnmarshalJSON(b []byte) error {
+	s := strings.Split(strings.Trim(string(b), "\""), ".")[0]
+	i, err := strconv.ParseInt(s, 10, 64)
+	if err != nil {
+		return err
+	}
+	t := time.Unix(i, 0)
+	*j = CustomTime(t)
+	return nil
+}
+
+func (j *CustomTime) Scan(value interface{}) error {
+	switch value.(type) {
+	case string:
+		t, err := time.Parse("2006-01-02 15:04:05-07:00", value.(string))
+		if err != nil {
+			return errors.New(fmt.Sprintf("unsupported date time format: %s", value))
+		}
+		*j = CustomTime(t)
+	case int64:
+		*j = CustomTime(time.Unix(value.(int64), 0))
+		break
+	case time.Time:
+		*j = CustomTime(value.(time.Time))
+		break
+	default:
+		return errors.New(fmt.Sprintf("unsupported type: %T", value))
+	}
+	return nil
+}
+
+func (j CustomTime) Value() (driver.Value, error) {
+	return time.Time(j), nil
+}
+
+func (j CustomTime) String() string {
+	t := time.Time(j)
+	return t.Format("2006-01-02 15:04:05")
+}
+
+func (j CustomTime) Time() time.Time {
+	return time.Time(j)
+}