package store

import "testing"

// R-581: two reports for one customer inside the same second. received_at has second granularity, so
// the dashboard's newest-report read must tie-break on insertion order — one row per customer, and it
// is the SECOND report's health and version. The received_at values are forced equal so the tie is
// certain rather than depending on the test's timing.
func TestGetCustomers_SameSecondReportsOneRowNewestWins(t *testing.T) {
	s := langStore(t)
	if err := s.SaveReport("tie", []byte(`{"controller_version":"0.1.0","health":{"status":"fail"}}`)); err != nil {
		t.Fatal(err)
	}
	if err := s.SaveReport("tie", []byte(`{"controller_version":"0.2.0","health":{"status":"ok"}}`)); err != nil {
		t.Fatal(err)
	}
	if _, err := s.db.Exec(`UPDATE reports SET received_at = '2026-10-05 12:00:00' WHERE customer_id = 'tie'`); err != nil {
		t.Fatal(err)
	}

	custs, err := s.GetCustomers()
	if err != nil {
		t.Fatal(err)
	}
	var got []CustomerSummary
	for _, c := range custs {
		if c.CustomerID == "tie" {
			got = append(got, c)
		}
	}
	if len(got) != 1 {
		t.Fatalf("GetCustomers returned %d rows for one customer, want exactly 1", len(got))
	}
	if got[0].ControllerVersion != "0.2.0" || got[0].HealthStatus != "ok" {
		t.Fatalf("newest report lost the tie: version=%q health=%q, want 0.2.0/ok", got[0].ControllerVersion, got[0].HealthStatus)
	}

	one, err := s.GetCustomer("tie")
	if err != nil {
		t.Fatal(err)
	}
	if one.ControllerVersion != "0.2.0" {
		t.Fatalf("GetCustomer newest = %q, want 0.2.0", one.ControllerVersion)
	}
}