package excelext

import (
	"testing"
	"time"

	"git.blackforestbytes.com/BlackForestBytes/goext/rfctime"
	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
)

func TestCellAddress(t *testing.T) {
	tst.AssertEqual(t, c(1, 0), "A1")
	tst.AssertEqual(t, c(1, 1), "B1")
	tst.AssertEqual(t, c(2, 0), "A2")
	tst.AssertEqual(t, c(10, 25), "Z10")
	tst.AssertEqual(t, c(1, 26), "AA1")
	tst.AssertEqual(t, c(99, 27), "AB99")
	tst.AssertEqual(t, c(100, 51), "AZ100")
	tst.AssertEqual(t, c(1, 52), "BA1")
}

func TestExcelizeOptTimeNil(t *testing.T) {
	got := excelizeOptTime(nil)
	if got != "" {
		t.Errorf("expected empty string for nil time, got %v", got)
	}
}

func TestExcelizeOptTimeValue(t *testing.T) {
	now := time.Date(2024, 5, 17, 13, 45, 30, 0, time.UTC)
	rt := rfctime.RFC3339NanoTime(now)
	got := excelizeOptTime(&rt)

	gt, ok := got.(time.Time)
	if !ok {
		t.Fatalf("expected time.Time, got %T", got)
	}
	if !gt.Equal(now) {
		t.Errorf("expected %v, got %v", now, gt)
	}
}

func TestExcelizeOptDateNil(t *testing.T) {
	got := excelizeOptDate(nil)
	if got != "" {
		t.Errorf("expected empty string for nil date, got %v", got)
	}
}

func TestExcelizeOptDateValue(t *testing.T) {
	d := rfctime.NewDate(time.Date(2025, 11, 3, 0, 0, 0, 0, time.UTC))
	got := excelizeOptDate(&d)

	gt, ok := got.(time.Time)
	if !ok {
		t.Fatalf("expected time.Time, got %T", got)
	}
	if gt.Year() != 2025 || gt.Month() != 11 || gt.Day() != 3 {
		t.Errorf("unexpected date returned: %v", gt)
	}
}