Fixed timezone things with postgresql and made "Forever" work.

database/dialects/postgresql/migrations/1_initial.go

@@ -46,7 +46,7 @@ func InitialUp(tx *sql.Tx) error {
 					COMMENT ON COLUMN pastes.data IS 'Paste data';
 					COMMENT ON COLUMN pastes.created_at IS 'Paste creation timestamp';
 					COMMENT ON COLUMN pastes.keep_for IS 'Keep for integer. 0 - forever.';
-					COMMENT ON COLUMN pastes.keep_for_unit_type IS 'Keep for unit type. 1 - minutes, 2 - hours, 3 - days, 4 - months.';
+					COMMENT ON COLUMN pastes.keep_for_unit_type IS 'Keep for unit type. 0 - forever, 1 - minutes, 2 - hours, 3 - days, 4 - months.';
 	`)
 	if err != nil {
 		return err

database/dialects/postgresql/postgresqldatabase.go

@@ -28,6 +28,7 @@ import (
 	// stdlib
 	"database/sql"
 	"fmt"
+	"time"
 
 	// local
 	"gitlab.com/pztrn/fastpastebin/database/dialects/postgresql/migrations"
@@ -66,6 +67,13 @@ func (db *Database) GetPaste(pasteID int) (*pastesmodel.Paste, error) {
 		return nil, err
 	}
 
+	// We're aware of timezone in PostgreSQL, so SELECT will return
+	// timestamps in server's local timezone. We should convert them.
+	loc, _ := time.LoadLocation("UTC")
+
+	utcCreatedAt := p.CreatedAt.In(loc)
+	p.CreatedAt = &utcCreatedAt
+
 	return p, nil
 }
 
@@ -85,9 +93,15 @@ func (db *Database) GetPagedPastes(page int) ([]pastesmodel.Paste, error) {
 		return nil, err
 	}
 
-	for i := range pastesRaw {
-		if !pastesRaw[i].IsExpired() {
-			pastes = append(pastes, pastesRaw[i])
+	// We're aware of timezone in PostgreSQL, so SELECT will return
+	// timestamps in server's local timezone. We should convert them.
+	loc, _ := time.LoadLocation("UTC")
+
+	for _, paste := range pastesRaw {
+		if !paste.IsExpired() {
+			utcCreatedAt := paste.CreatedAt.In(loc)
+			paste.CreatedAt = &utcCreatedAt
+			pastes = append(pastes, paste)
 		}
 	}
 
@@ -104,9 +118,9 @@ func (db *Database) GetPastesPages() int {
 	}
 
 	// Check if pastes isn't expired.
-	for i := range pastesRaw {
-		if !pastesRaw[i].IsExpired() {
-			pastes = append(pastes, pastesRaw[i])
+	for _, paste := range pastesRaw {
+		if !paste.IsExpired() {
+			pastes = append(pastes, paste)
 		}
 	}