sync file-type support across upload/convert and fix collected_at timezone handling

internal/parser/vendors/nvidia_bug_report/parser.go

@@ -3,14 +3,33 @@
 package nvidia_bug_report
 
 import (
+	"fmt"
+	"regexp"
 	"strings"
+	"time"
 
 	"git.mchus.pro/mchus/logpile/internal/models"
 	"git.mchus.pro/mchus/logpile/internal/parser"
 )
 
 // parserVersion - version of this parser module
-const parserVersion = "1.0.0"
+const parserVersion = "1.1.0"
+
+var bugReportDateLineRegex = regexp.MustCompile(`(?m)^Date:\s+(.+?)\s*$`)
+var dateWithTZAbbrevRegex = regexp.MustCompile(`^([A-Za-z]{3}\s+[A-Za-z]{3}\s+\d{1,2}\s+\d{2}:\d{2}:\d{2})\s+([A-Za-z]{2,5})\s+(\d{4})$`)
+
+var timezoneAbbrevToOffset = map[string]string{
+	"UTC": "+00:00",
+	"GMT": "+00:00",
+	"EST": "-05:00",
+	"EDT": "-04:00",
+	"CST": "-06:00",
+	"CDT": "-05:00",
+	"MST": "-07:00",
+	"MDT": "-06:00",
+	"PST": "-08:00",
+	"PDT": "-07:00",
+}
 
 func init() {
 	parser.Register(&Parser{})
@@ -81,6 +100,10 @@ func (p *Parser) Parse(files []parser.ExtractedFile) (*models.AnalysisResult, er
 	}
 
 	content := string(files[0].Content)
+	if collectedAt, tzOffset, ok := parseBugReportCollectedAt(content); ok {
+		result.CollectedAt = collectedAt.UTC()
+		result.SourceTimezone = tzOffset
+	}
 
 	// Parse system information
 	parseSystemInfo(content, result)
@@ -105,3 +128,49 @@ func (p *Parser) Parse(files []parser.ExtractedFile) (*models.AnalysisResult, er
 
 	return result, nil
 }
+
+func parseBugReportCollectedAt(content string) (time.Time, string, bool) {
+	matches := bugReportDateLineRegex.FindStringSubmatch(content)
+	if len(matches) != 2 {
+		return time.Time{}, "", false
+	}
+	raw := strings.TrimSpace(matches[1])
+	if raw == "" {
+		return time.Time{}, "", false
+	}
+
+	if m := dateWithTZAbbrevRegex.FindStringSubmatch(raw); len(m) == 4 {
+		if offset, ok := timezoneAbbrevToOffset[strings.ToUpper(strings.TrimSpace(m[2]))]; ok {
+			layout := "Mon Jan 2 15:04:05 -07:00 2006"
+			normalized := strings.TrimSpace(m[1]) + " " + offset + " " + strings.TrimSpace(m[3])
+			if ts, err := time.Parse(layout, normalized); err == nil {
+				return ts, offset, true
+			}
+		}
+	}
+
+	layouts := []string{
+		"Mon Jan 2 15:04:05 MST 2006",
+		"Mon Jan 2 15:04:05 2006",
+	}
+	for _, layout := range layouts {
+		ts, err := time.Parse(layout, raw)
+		if err != nil {
+			continue
+		}
+		return ts, formatOffset(ts), true
+	}
+	return time.Time{}, "", false
+}
+
+func formatOffset(t time.Time) string {
+	_, sec := t.Zone()
+	sign := '+'
+	if sec < 0 {
+		sign = '-'
+		sec = -sec
+	}
+	h := sec / 3600
+	m := (sec % 3600) / 60
+	return fmt.Sprintf("%c%02d:%02d", sign, h, m)
+}