package deploy

import (
	"testing"
)

func TestMergeUniqueIPv4DedupesAndFilters(t *testing.T) {
	got := mergeUniqueIPv4(
		[]string{"192.168.1.10", "192.168.1.10", "not-an-ip"},
		[]string{"192.168.1.11", "192.168.1.10"},
	)
	if len(got) != 2 {
		t.Fatalf("want 2 hosts, got %d: %v", len(got), got)
	}
	if got[0] != "192.168.1.10" || got[1] != "192.168.1.11" {
		t.Fatalf("unexpected order/content: %v", got)
	}
}

func TestCapStrings(t *testing.T) {
	in := []string{"a", "b", "c"}
	got := capStrings(in, 2)
	if len(got) != 2 || got[0] != "a" || got[1] != "b" {
		t.Fatalf("got %v", got)
	}
	if in[2] != "c" {
		t.Fatal("capStrings should copy, not mutate input unexpectedly")
	}
}

func TestProbeDomainSRVEmptyDomain(t *testing.T) {
	ldap, krb, joined := probeDomainSRV("")
	if joined || len(ldap) > 0 || len(krb) > 0 {
		t.Fatalf("empty domain should not look joined: ldap=%v krb=%v joined=%v", ldap, krb, joined)
	}
}

func TestCollectNetworkHintsRespectsSpreadCap(t *testing.T) {
	hints := CollectNetworkHints(3)
	if len(hints.SpreadTargets) > 3 {
		t.Fatalf("spread cap ignored: got %d targets", len(hints.SpreadTargets))
	}
	if hints.SpreadTargetCount != len(hints.SpreadTargets) {
		t.Fatalf("count mismatch: count=%d len=%d", hints.SpreadTargetCount, len(hints.SpreadTargets))
	}
	if hints.GeneratedAt == "" {
		t.Fatal("generated_at should be set")
	}
}

func TestCollectNetworkHintsPreferGPOWhenDomainJoined(t *testing.T) {
	hints := NetworkHints{DomainJoined: true}
	if hints.DomainJoined {
		hints.PreferJoinLane = "gpo"
	}
	if hints.PreferJoinLane != "gpo" {
		t.Fatalf("got %q", hints.PreferJoinLane)
	}
}

func TestCollectPassiveNetworkHintsAlias(t *testing.T) {
	a := CollectNetworkHints(5)
	b := CollectPassiveNetworkHints(5)
	if a.SpreadTargetCount != b.SpreadTargetCount {
		t.Fatal("export alias should match CollectNetworkHints")
	}
}

func TestDiscoverLANSpreadTargetsUsesNeighborMerge(t *testing.T) {
	targets := DiscoverLANSpreadTargets(128)
	if len(targets) > 128 {
		t.Fatalf("cap ignored: %d targets", len(targets))
	}
}