package i18n

import (
	"testing"
	"time"
)

// R-562 (`09` §3 decision 223): Hungarian dates and numbers in Hungarian, ISO-like in English.
func TestFormat_DatesPerLanguage(t *testing.T) {
	at := time.Date(2026, 10, 10, 15, 4, 0, 0, time.UTC)
	cases := []struct{ name, got, want string }{
		{"hu datetime", FormatDateTime("hu", at), "2026. 10. 10. 15:04"},
		{"en datetime", FormatDateTime("en", at), "2026-10-10 15:04"},
		{"hu date", FormatDate("hu", at), "2026. 10. 10."},
		{"en date", FormatDate("en", at), "2026-10-10"},
		{"hu month-day", FormatMonthDayTime("hu", at), "10. 10. 15:04"},
		{"en month-day", FormatMonthDayTime("en", at), "10-10 15:04"},
		{"unknown language falls back to Hungarian", FormatDateTime("xx", at), "2026. 10. 10. 15:04"},
	}
	for _, c := range cases {
		if c.got != c.want {
			t.Errorf("%s: got %q, want %q", c.name, c.got, c.want)
		}
	}
}

func TestFormat_NumbersPerLanguage(t *testing.T) {
	cases := []struct{ name, got, want string }{
		{"hu decimal comma", FormatDecimal("hu", 1.53, 1), "1,5"},
		{"en decimal point", FormatDecimal("en", 1.53, 1), "1.5"},
		{"hu integer has no separator", FormatDecimal("hu", 12, 0), "12"},
		{"hu size string", LocalizeDecimals("hu", "1.5 GB"), "1,5 GB"},
		{"hu list of sizes", LocalizeDecimals("hu", "Immich (95.0 GB), Nextcloud (34.0 GB)"), "Immich (95,0 GB), Nextcloud (34,0 GB)"},
		{"en untouched", LocalizeDecimals("en", "1.5 GB"), "1.5 GB"},
		{"hu sentence full stop untouched", LocalizeDecimals("hu", "Kész. 3 elem."), "Kész. 3 elem."},
		{"hu version untouched", LocalizeDecimals("hu", "v0.307.0 és 1.5 GB"), "v0.307.0 és 1,5 GB"},
		{"hu address untouched", LocalizeDecimals("hu", "192.168.0.180"), "192.168.0.180"},
	}
	for _, c := range cases {
		if c.got != c.want {
			t.Errorf("%s: got %q, want %q", c.name, c.got, c.want)
		}
	}
}