package seasonsview

import "time"

// formatISO returns an ISO 8601 UTC string for use in <time datetime="...">.
func formatISO(t *time.Time) string {
	if t == nil {
		return ""
	}
	return t.UTC().Format(time.RFC3339)
}

// formatISOUnix returns an ISO 8601 UTC string from a Unix timestamp.
func formatISOUnix(unix int64) string {
	return time.Unix(unix, 0).UTC().Format(time.RFC3339)
}

// localtime renders a <time> element that will be formatted client-side
// in the user's local timezone. The format parameter maps to data-localtime:
//   "date"     → "Mon 2 Jan 2026"
//   "time"     → "3:04 PM"
//   "datetime" → "Mon 2 Jan 2026 at 3:04 PM"
//   "short"    → "Mon 2 Jan 3:04 PM"
//   "histdate" → "2 Jan 2006 15:04"
templ localtime(t *time.Time, format string) {
	if t != nil {
		<time datetime={ formatISO(t) } data-localtime={ format }>
			{ t.UTC().Format("2 Jan 2006 15:04 UTC") }
		</time>
	} else {
		No time set
	}
}

// localtimeUnix renders a <time> element from a Unix timestamp.
templ localtimeUnix(unix int64, format string) {
	{{
		t := time.Unix(unix, 0)
	}}
	<time datetime={ formatISOUnix(unix) } data-localtime={ format }>
		{ t.UTC().Format("2 Jan 2006 15:04 UTC") }
	</time>
}