Eric Rakestraw
b8804d32d2
- Add common SynthStationID helpers for coordinate-based providers - Use shared helper for Open-Meteo and OpenWeather station ID synthesis - Require both lat/lon when generating synthetic IDs to avoid misleading defaults - Remove unused Open-Meteo normalizer wrapper code This reduces cross-provider duplication while keeping provider-specific mapping logic explicit and readable.
51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
package nws
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import (
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"fmt"
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"strings"
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"time"
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)
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// ParseTime parses NWS timestamps.
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//
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// NWS observation timestamps are typically RFC3339, sometimes with fractional seconds.
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// We accept RFC3339Nano first, then RFC3339.
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func ParseTime(s string) (time.Time, error) {
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s = strings.TrimSpace(s)
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if s == "" {
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return time.Time{}, fmt.Errorf("empty time")
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}
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if t, err := time.Parse(time.RFC3339Nano, s); err == nil {
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return t, nil
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}
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if t, err := time.Parse(time.RFC3339, s); err == nil {
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return t, nil
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}
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return time.Time{}, fmt.Errorf("unsupported NWS timestamp format: %q", s)
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}
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// ParseTimeBestEffort parses an NWS timestamp and returns it in UTC.
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//
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// This is a convenience for normalizers that want "best effort" parsing:
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// invalid/empty strings do not fail the entire normalization; they return zero time.
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func ParseTimeBestEffort(s string) time.Time {
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t, err := ParseTime(s)
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if err != nil {
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return time.Time{}
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}
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return t.UTC()
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}
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// ParseTimePtr parses an NWS timestamp and returns a UTC *time.Time.
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//
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// Empty/unparseable input returns nil. This is useful for optional CAP fields.
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func ParseTimePtr(s string) *time.Time {
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t := ParseTimeBestEffort(s)
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if t.IsZero() {
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return nil
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}
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return &t
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}
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