package haproxy

import (
	"strings"
	"testing"

	"github.com/wild-cloud/wild-central/internal/domains"
)

func TestNewManager_DefaultPath(t *testing.T) {
	m := NewManager("")
	if m.GetConfigPath() != "/etc/haproxy/haproxy.cfg" {
		t.Errorf("got %q, want default path", m.GetConfigPath())
	}
}

func TestNewManager_CustomPath(t *testing.T) {
	m := NewManager("/tmp/haproxy.cfg")
	if m.GetConfigPath() != "/tmp/haproxy.cfg" {
		t.Errorf("got %q, want /tmp/haproxy.cfg", m.GetConfigPath())
	}
}

func TestSanitizeName(t *testing.T) {
	cases := []struct {
		in   string
		want string
	}{
		{"payne-cloud", "payne_cloud"},
		{"cloud.payne.io", "cloud_payne_io"},
		{"civil_ssh", "civil_ssh"},
		{"test cloud 1", "test_cloud_1"},
		{"abc123", "abc123"},
	}
	for _, c := range cases {
		if got := sanitizeName(c.in); got != c.want {
			t.Errorf("sanitizeName(%q) = %q, want %q", c.in, got, c.want)
		}
	}
}

func TestGetListenPorts_BasePorts(t *testing.T) {
	m := NewManager("")
	ports := m.GetListenPorts(nil)
	want := map[int]bool{80: true, 443: true, 8404: true}
	for _, p := range ports {
		delete(want, p)
	}
	if len(want) > 0 {
		t.Errorf("missing base ports: %v", want)
	}
}

func TestGetListenPorts_IncludesCustom(t *testing.T) {
	m := NewManager("")
	custom := []CustomRoute{{Name: "ssh", Port: 2222, Backend: "192.168.1.10:22"}}
	ports := m.GetListenPorts(custom)
	found := false
	for _, p := range ports {
		if p == 2222 {
			found = true
		}
	}
	if !found {
		t.Errorf("custom port 2222 not in listen ports: %v", ports)
	}
}

func TestGenerate_AlwaysIncludesBoilerplate(t *testing.T) {
	m := NewManager("")
	out := m.Generate(nil, nil)

	for _, want := range []string{
		"global\n",
		"defaults\n",
		"frontend stats\n",
		"frontend http_in\n",
		"redirect scheme https code 301",
		"bind *:8404",
	} {
		if !strings.Contains(out, want) {
			t.Errorf("expected %q in output, got:\n%s", want, out)
		}
	}
}

func TestGenerate_NoInstances_NoHTTPSFrontend(t *testing.T) {
	m := NewManager("")
	out := m.Generate(nil, nil)
	if strings.Contains(out, "frontend https_in") {
		t.Errorf("https_in frontend should be absent when no instances configured")
	}
}

func TestGenerate_WithInstance_SNIACLs(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "payne-cloud", Domain: "cloud.payne.io", BackendIP: "192.168.8.20", Subdomains: true},
	}
	out := m.Generate(instances, nil)

	// With subdomains:true, both ACL lines for OR-matching
	if !strings.Contains(out, "req_ssl_sni -m end .cloud.payne.io") {
		t.Errorf("expected subdomain SNI ACL, got:\n%s", out)
	}
	if !strings.Contains(out, "req_ssl_sni -m str cloud.payne.io") {
		t.Errorf("expected exact SNI ACL, got:\n%s", out)
	}
	if !strings.Contains(out, "use_backend be_https_payne_cloud if is_payne_cloud") {
		t.Errorf("expected use_backend directive, got:\n%s", out)
	}
}

func TestGenerate_WithInstance_Backend(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "payne-cloud", Domain: "cloud.payne.io", BackendIP: "192.168.8.20"},
	}
	out := m.Generate(instances, nil)

	if !strings.Contains(out, "backend be_https_payne_cloud") {
		t.Errorf("expected backend block, got:\n%s", out)
	}
	if !strings.Contains(out, "server s0 192.168.8.20:443 check") {
		t.Errorf("expected server line with LB IP, got:\n%s", out)
	}
}

func TestGenerate_MultipleInstances(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "payne-cloud", Domain: "cloud.payne.io", BackendIP: "192.168.8.20"},
		{Name: "test-cloud", Domain: "cloud2.payne.io", BackendIP: "192.168.8.30"},
	}
	out := m.Generate(instances, nil)

	if !strings.Contains(out, "be_https_payne_cloud") {
		t.Errorf("expected payne-cloud backend, got:\n%s", out)
	}
	if !strings.Contains(out, "be_https_test_cloud") {
		t.Errorf("expected test-cloud backend, got:\n%s", out)
	}
	if !strings.Contains(out, "192.168.8.20:443") {
		t.Errorf("expected payne-cloud IP, got:\n%s", out)
	}
	if !strings.Contains(out, "192.168.8.30:443") {
		t.Errorf("expected test-cloud IP, got:\n%s", out)
	}
}

func TestGenerate_WithSubdomains(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "payne-cloud", Domain: "cloud.payne.io", BackendIP: "192.168.8.20", Subdomains: true},
		{Name: "payne-io", Domain: "payne.io", BackendIP: "192.168.8.20", Subdomains: false},
	}
	out := m.Generate(instances, nil)

	// cloud.payne.io with subdomains:true should have wildcard ACL
	if !strings.Contains(out, "req_ssl_sni -m end .cloud.payne.io") {
		t.Errorf("expected wildcard ACL for cloud.payne.io, got:\n%s", out)
	}
	// payne.io with subdomains:false should have exact match only
	if !strings.Contains(out, "req_ssl_sni -m str payne.io") {
		t.Errorf("expected exact ACL for payne.io, got:\n%s", out)
	}
	// payne.io should NOT have wildcard match
	if strings.Contains(out, "req_ssl_sni -m end .payne.io") {
		t.Errorf("unexpected wildcard ACL for payne.io (subdomains:false), got:\n%s", out)
	}
}

func TestGenerate_ACLOrdering(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "payne-cloud", Domain: "cloud.payne.io", BackendIP: "192.168.8.240", Subdomains: true},
	}
	httpRoutes := []HTTPRoute{
		{Name: "wild-central", Domain: "central.payne.io", Routes: []HTTPRouteBackend{{Backend: "127.0.0.1:15055"}}},
		{Name: "wild-cloud", Domain: "wild-cloud.payne.io", Routes: []HTTPRouteBackend{{Backend: "127.0.0.1:5055"}}},
	}
	out := m.GenerateWithOpts(instances, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	// L7 exact matches must appear BEFORE L4 wildcard matches
	l7Pos := strings.Index(out, "is_l7_wild_central")
	l4Pos := strings.Index(out, "is_payne_cloud")

	if l7Pos < 0 {
		t.Fatalf("expected L7 ACL for wild-central, got:\n%s", out)
	}
	if l4Pos < 0 {
		t.Fatalf("expected L4 ACL for payne-cloud, got:\n%s", out)
	}
	if l7Pos > l4Pos {
		t.Errorf("L7 exact match (pos %d) must come before L4 wildcard (pos %d):\n%s", l7Pos, l4Pos, out)
	}

	// wild-cloud.payne.io should NOT match payne-cloud's wildcard
	// (it should be caught by the L7 exact match first)
	if strings.Contains(out, "use_backend be_https_payne_cloud if is_l7_wild_cloud") {
		t.Errorf("wild-cloud.payne.io should route to L7, not payne-cloud")
	}
}

func TestGenerate_CustomRoute(t *testing.T) {
	m := NewManager("")
	custom := []CustomRoute{
		{Name: "civil_ssh", Port: 2222, Backend: "192.168.8.10:22"},
	}
	out := m.Generate(nil, custom)

	if !strings.Contains(out, "frontend fe_civil_ssh") {
		t.Errorf("expected custom frontend, got:\n%s", out)
	}
	if !strings.Contains(out, "bind *:2222") {
		t.Errorf("expected bind on port 2222, got:\n%s", out)
	}
	if !strings.Contains(out, "backend be_civil_ssh") {
		t.Errorf("expected custom backend, got:\n%s", out)
	}
	if !strings.Contains(out, "server s0 192.168.8.10:22") {
		t.Errorf("expected server line with backend address, got:\n%s", out)
	}
}

// --- L7 HTTP route tests ---

func TestGenerateWithOpts_HTTPRoutes_L7Frontend(t *testing.T) {
	m := NewManager("")
	httpRoutes := []HTTPRoute{
		{Name: "my-api", Domain: "my-api.payne.io", Routes: []HTTPRouteBackend{{Backend: "192.168.8.60:9001", HealthPath: "/health"}}},
		{Name: "dashboard", Domain: "dashboard.payne.io", Routes: []HTTPRouteBackend{{Backend: "192.168.8.60:8080"}}},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{
		HTTPRoutes: httpRoutes,
		CertsDir:   "/etc/haproxy/certs/",
	})

	// L7 TLS termination frontend should exist
	if !strings.Contains(out, "frontend l7_https") {
		t.Errorf("expected L7 frontend, got:\n%s", out)
	}
	if !strings.Contains(out, "ssl crt /etc/haproxy/certs/") {
		t.Errorf("expected certs dir in L7 bind, got:\n%s", out)
	}

	// Host-based ACLs
	if !strings.Contains(out, "hdr(host) -i my-api.payne.io") {
		t.Errorf("expected Host ACL for my-api, got:\n%s", out)
	}
	if !strings.Contains(out, "hdr(host) -i dashboard.payne.io") {
		t.Errorf("expected Host ACL for dashboard, got:\n%s", out)
	}

	// L7 backends
	if !strings.Contains(out, "backend be_l7_my_api_0") {
		t.Errorf("expected L7 backend for my-api, got:\n%s", out)
	}
	if !strings.Contains(out, "server s0 192.168.8.60:9001 check") {
		t.Errorf("expected my-api server with health check, got:\n%s", out)
	}
	if !strings.Contains(out, "option httpchk GET /health") {
		t.Errorf("expected httpchk for my-api, got:\n%s", out)
	}

	// Dashboard backend (no health check)
	if !strings.Contains(out, "backend be_l7_dashboard_0") {
		t.Errorf("expected L7 backend for dashboard, got:\n%s", out)
	}
	if !strings.Contains(out, "server s0 192.168.8.60:8080") {
		t.Errorf("expected dashboard server line, got:\n%s", out)
	}
}

func TestGenerateWithOpts_MixedL4AndL7(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "payne-cloud", Domain: "cloud.payne.io", BackendIP: "192.168.8.100"},
	}
	httpRoutes := []HTTPRoute{
		{Name: "my-api", Domain: "my-api.payne.io", Routes: []HTTPRouteBackend{{Backend: "192.168.8.60:9001"}}},
	}

	out := m.GenerateWithOpts(instances, nil, GenerateOpts{
		HTTPRoutes: httpRoutes,
	})

	// Both L4 SNI route and L7 route should be in the same config
	if !strings.Contains(out, "use_backend be_https_payne_cloud if is_payne_cloud") {
		t.Errorf("expected L4 instance route, got:\n%s", out)
	}
	if !strings.Contains(out, "frontend l7_https") {
		t.Errorf("expected L7 frontend, got:\n%s", out)
	}
	if !strings.Contains(out, "backend be_l7_my_api_0") {
		t.Errorf("expected L7 backend for my-api, got:\n%s", out)
	}
	// L7 fallback should be present
	if !strings.Contains(out, "default_backend be_l7_termination") {
		t.Errorf("expected default_backend for L7 termination, got:\n%s", out)
	}
}

func TestGenerateWithOpts_ACLOrdering_L7BeforeL4Wildcard(t *testing.T) {
	m := NewManager("")

	// Scenario: cloud.payne.io with subdomains:true is an L4 wildcard route.
	// wild-cloud.payne.io is an L7 HTTP service. The L7 exact match MUST
	// appear before the L4 wildcard, otherwise HAProxy matches
	// wild-cloud.payne.io against *.payne.io and sends it to the wrong backend.
	instances := []L4Route{
		{Name: "payne-io", Domain: "payne.io", BackendIP: "192.168.8.240", Subdomains: true},
	}
	httpRoutes := []HTTPRoute{
		{Name: "wild-central", Domain: "central.payne.io", Routes: []HTTPRouteBackend{{Backend: "127.0.0.1:15055"}}},
		{Name: "wild-cloud", Domain: "wild-cloud.payne.io", Routes: []HTTPRouteBackend{{Backend: "127.0.0.1:5055"}}},
	}
	out := m.GenerateWithOpts(instances, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	// All L7 exact matches must appear before L4 wildcard matches
	l7Central := strings.Index(out, "is_l7_wild_central")
	l7WildCloud := strings.Index(out, "is_l7_wild_cloud")
	l4Wildcard := strings.Index(out, "req_ssl_sni -m end .payne.io")

	if l7Central < 0 {
		t.Fatalf("expected L7 ACL for wild-central, got:\n%s", out)
	}
	if l7WildCloud < 0 {
		t.Fatalf("expected L7 ACL for wild-cloud, got:\n%s", out)
	}
	if l4Wildcard < 0 {
		t.Fatalf("expected L4 wildcard ACL for payne.io, got:\n%s", out)
	}

	if l7Central > l4Wildcard {
		t.Errorf("L7 central.payne.io (pos %d) must appear before L4 *.payne.io wildcard (pos %d)", l7Central, l4Wildcard)
	}
	if l7WildCloud > l4Wildcard {
		t.Errorf("L7 wild-cloud.payne.io (pos %d) must appear before L4 *.payne.io wildcard (pos %d)", l7WildCloud, l4Wildcard)
	}

	// Verify the config order overall: L7 exact → L4 wildcard → default
	defaultBackend := strings.Index(out, "default_backend be_l7_termination")
	if defaultBackend < 0 {
		t.Fatalf("expected default_backend for L7 termination, got:\n%s", out)
	}
	if l4Wildcard > defaultBackend {
		t.Errorf("L4 wildcard (pos %d) must appear before default_backend (pos %d)", l4Wildcard, defaultBackend)
	}
}

func TestGenerateWithOpts_SubdomainsFalse_ExactOnly(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "payne-io", Domain: "payne.io", BackendIP: "192.168.8.20", Subdomains: false},
	}
	out := m.GenerateWithOpts(instances, nil, GenerateOpts{})

	// subdomains:false must produce ONLY -m str (exact), NOT -m end (wildcard)
	if !strings.Contains(out, "req_ssl_sni -m str payne.io") {
		t.Errorf("expected exact match ACL for payne.io, got:\n%s", out)
	}
	if strings.Contains(out, "req_ssl_sni -m end .payne.io") {
		t.Errorf("subdomains:false must NOT produce wildcard ACL, got:\n%s", out)
	}
}

func TestGenerateWithOpts_SubdomainsTrue_WildcardAndExact(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "cloud-payne", Domain: "cloud.payne.io", BackendIP: "192.168.8.20", Subdomains: true},
	}
	out := m.GenerateWithOpts(instances, nil, GenerateOpts{})

	// subdomains:true must produce BOTH -m end (wildcard) AND -m str (exact)
	if !strings.Contains(out, "req_ssl_sni -m end .cloud.payne.io") {
		t.Errorf("subdomains:true must produce wildcard ACL (-m end), got:\n%s", out)
	}
	if !strings.Contains(out, "req_ssl_sni -m str cloud.payne.io") {
		t.Errorf("subdomains:true must also produce exact ACL (-m str), got:\n%s", out)
	}

	// Both ACLs should use the same backend
	if !strings.Contains(out, "use_backend be_https_cloud_payne if is_cloud_payne") {
		t.Errorf("expected use_backend for cloud_payne, got:\n%s", out)
	}
}

func TestGenerateWithOpts_ACLOrdering_L4ExactBeforeL4Wildcard(t *testing.T) {
	m := NewManager("")
	// payne.io exact (subdomains:false) must appear before cloud.payne.io wildcard (subdomains:true)
	instances := []L4Route{
		{Name: "cloud-payne", Domain: "cloud.payne.io", BackendIP: "192.168.8.20", Subdomains: true},
		{Name: "payne-io", Domain: "payne.io", BackendIP: "192.168.8.20", Subdomains: false},
	}
	out := m.GenerateWithOpts(instances, nil, GenerateOpts{})

	exactPos := strings.Index(out, "req_ssl_sni -m str payne.io")
	wildcardPos := strings.Index(out, "req_ssl_sni -m end .cloud.payne.io")

	if exactPos < 0 {
		t.Fatalf("expected exact match ACL for payne.io, got:\n%s", out)
	}
	if wildcardPos < 0 {
		t.Fatalf("expected wildcard ACL for cloud.payne.io, got:\n%s", out)
	}
	if exactPos > wildcardPos {
		t.Errorf("L4 exact match (pos %d) must come before L4 wildcard (pos %d):\n%s", exactPos, wildcardPos, out)
	}
}

func TestGenerateWithOpts_BackwardCompatible(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "test", Domain: "test.example.com", BackendIP: "10.0.0.1"},
	}

	// Using old Generate function should still work
	out := m.Generate(instances, nil)
	if !strings.Contains(out, "be_https_test") {
		t.Errorf("backward compat: expected instance backend, got:\n%s", out)
	}
	// No L7 frontend when no HTTP routes
	if strings.Contains(out, "frontend l7_https") {
		t.Errorf("backward compat: unexpected L7 frontend, got:\n%s", out)
	}
}

func TestGenerateWithOpts_NoRoutes_NoHTTPSFrontend(t *testing.T) {
	m := NewManager("")

	// No instances, no HTTP routes
	out := m.GenerateWithOpts(nil, nil, GenerateOpts{})

	if strings.Contains(out, "frontend https_in") {
		t.Errorf("expected no HTTPS frontend with empty instances and empty HTTP routes, got:\n%s", out)
	}
	if strings.Contains(out, "frontend l7_https") {
		t.Errorf("expected no L7 frontend with no HTTP routes, got:\n%s", out)
	}
}

func TestGenerateWithOpts_OnlyHTTPRoutes(t *testing.T) {
	m := NewManager("")

	httpRoutes := []HTTPRoute{
		{Name: "my-api", Domain: "api.example.com", Routes: []HTTPRouteBackend{{Backend: "192.168.1.10:9001"}}},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	// HTTPS frontend should be present (needed for SNI dispatch to L7)
	if !strings.Contains(out, "frontend https_in") {
		t.Errorf("expected HTTPS frontend when HTTP routes present, got:\n%s", out)
	}
	// L7 frontend should be present
	if !strings.Contains(out, "frontend l7_https") {
		t.Errorf("expected L7 frontend for HTTP routes, got:\n%s", out)
	}
	// L7 backend should be present
	if !strings.Contains(out, "backend be_l7_my_api_0") {
		t.Errorf("expected L7 backend for my-api, got:\n%s", out)
	}
	// No L4 instance backends
	if strings.Contains(out, "be_https_") {
		t.Errorf("unexpected L4 instance backend when only HTTP routes, got:\n%s", out)
	}
}

func TestGenerateWithOpts_OnlyL4Routes(t *testing.T) {
	m := NewManager("")

	instances := []L4Route{
		{Name: "cloud", Domain: "cloud.example.com", BackendIP: "10.0.0.1", Subdomains: true},
	}

	out := m.GenerateWithOpts(instances, nil, GenerateOpts{})

	// HTTPS frontend should exist for L4 SNI routing
	if !strings.Contains(out, "frontend https_in") {
		t.Errorf("expected HTTPS frontend for L4 routes, got:\n%s", out)
	}
	// L4 backend should exist
	if !strings.Contains(out, "backend be_https_cloud") {
		t.Errorf("expected L4 backend, got:\n%s", out)
	}
	// No L7 frontend when no HTTP routes
	if strings.Contains(out, "frontend l7_https") {
		t.Errorf("unexpected L7 frontend with only L4 routes, got:\n%s", out)
	}
	// No L7 termination backend
	if strings.Contains(out, "be_l7_termination") {
		t.Errorf("unexpected L7 termination backend with only L4 routes, got:\n%s", out)
	}
}

func TestGenerateWithOpts_CertsDir(t *testing.T) {
	m := NewManager("")

	httpRoutes := []HTTPRoute{
		{Name: "app", Domain: "app.example.com", Routes: []HTTPRouteBackend{{Backend: "127.0.0.1:8080"}}},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{
		HTTPRoutes: httpRoutes,
		CertsDir:   "/opt/certs/wildcard/",
	})

	if !strings.Contains(out, "ssl crt /opt/certs/wildcard/") {
		t.Errorf("expected custom CertsDir in L7 bind, got:\n%s", out)
	}
}

func TestGenerateWithOpts_DefaultCertsDir(t *testing.T) {
	m := NewManager("")

	httpRoutes := []HTTPRoute{
		{Name: "app", Domain: "app.example.com", Routes: []HTTPRouteBackend{{Backend: "127.0.0.1:8080"}}},
	}

	// Empty CertsDir should default to /etc/haproxy/certs/
	out := m.GenerateWithOpts(nil, nil, GenerateOpts{
		HTTPRoutes: httpRoutes,
		CertsDir:   "",
	})

	if !strings.Contains(out, "ssl crt /etc/haproxy/certs/") {
		t.Errorf("expected default CertsDir /etc/haproxy/certs/ in L7 bind, got:\n%s", out)
	}
}

func TestGenerate_CustomRoutePorts(t *testing.T) {
	m := NewManager("")

	custom := []CustomRoute{
		{Name: "ssh", Port: 2222, Backend: "192.168.1.10:22"},
		{Name: "mqtt", Port: 1883, Backend: "192.168.1.20:1883"},
	}

	out := m.Generate(nil, custom)

	if !strings.Contains(out, "bind *:2222") {
		t.Errorf("expected bind on port 2222, got:\n%s", out)
	}
	if !strings.Contains(out, "bind *:1883") {
		t.Errorf("expected bind on port 1883, got:\n%s", out)
	}
	if !strings.Contains(out, "server s0 192.168.1.10:22") {
		t.Errorf("expected SSH backend, got:\n%s", out)
	}
	if !strings.Contains(out, "server s0 192.168.1.20:1883") {
		t.Errorf("expected MQTT backend, got:\n%s", out)
	}
}

func TestGenerateWithOpts_HealthCheckInL7Backend(t *testing.T) {
	m := NewManager("")

	httpRoutes := []HTTPRoute{
		{Name: "api", Domain: "api.example.com", Routes: []HTTPRouteBackend{{Backend: "10.0.0.5:8080", HealthPath: "/healthz"}}},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	if !strings.Contains(out, "option httpchk GET /healthz") {
		t.Errorf("expected httpchk directive with health path, got:\n%s", out)
	}
	if !strings.Contains(out, "server s0 10.0.0.5:8080 check") {
		t.Errorf("expected server line with 'check' flag for health check, got:\n%s", out)
	}
}

// --- L7 extended features tests (paths, headers, IP whitelisting) ---

func TestGenerateWithOpts_PathRestriction(t *testing.T) {
	m := NewManager("")

	httpRoutes := []HTTPRoute{
		{
			Name:   "synapse-fed",
			Domain: "payne.io",
			Routes: []HTTPRouteBackend{{
				Backend: "192.168.8.80:80",
				Paths:   []string{"/.well-known/matrix", "/_matrix"},
			}},
		},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	if !strings.Contains(out, "acl path_synapse_fed_0 path_beg /.well-known/matrix /_matrix") {
		t.Errorf("expected path ACL for synapse-fed, got:\n%s", out)
	}
	if !strings.Contains(out, "use_backend be_l7_synapse_fed_0 if host_synapse_fed path_synapse_fed_0") {
		t.Errorf("expected path-restricted use_backend, got:\n%s", out)
	}
}

func TestGenerateWithOpts_ResponseHeaders(t *testing.T) {
	m := NewManager("")

	httpRoutes := []HTTPRoute{
		{
			Name:   "plausible",
			Domain: "plausible.cloud.payne.io",
			Routes: []HTTPRouteBackend{{
				Backend: "192.168.8.80:80",
				Headers: &domains.HeaderConfig{
					Response: map[string]string{
						"Access-Control-Allow-Private-Network": "true",
					},
				},
			}},
		},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	if !strings.Contains(out, `http-response set-header Access-Control-Allow-Private-Network "true" if host_plausible`) {
		t.Errorf("expected response header rule, got:\n%s", out)
	}
}

func TestGenerateWithOpts_RequestHeaders(t *testing.T) {
	m := NewManager("")

	httpRoutes := []HTTPRoute{
		{
			Name:   "my-api",
			Domain: "api.payne.io",
			Routes: []HTTPRouteBackend{{
				Backend: "192.168.8.80:80",
				Headers: &domains.HeaderConfig{
					Request: map[string]string{
						"X-Forwarded-Proto": "https",
					},
				},
			}},
		},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	if !strings.Contains(out, `http-request set-header X-Forwarded-Proto "https" if host_my_api`) {
		t.Errorf("expected request header rule, got:\n%s", out)
	}
}

func TestGenerateWithOpts_IPWhitelist(t *testing.T) {
	m := NewManager("")

	httpRoutes := []HTTPRoute{
		{
			Name:   "headlamp",
			Domain: "headlamp.internal.cloud.payne.io",
			Routes: []HTTPRouteBackend{{
				Backend: "192.168.8.80:80",
				IPAllow: []string{"10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16"},
			}},
		},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	if !strings.Contains(out, "acl ip_headlamp_0 src 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16") {
		t.Errorf("expected IP ACL for headlamp, got:\n%s", out)
	}
	if !strings.Contains(out, "http-request deny if host_headlamp !ip_headlamp_0") {
		t.Errorf("expected IP deny rule for headlamp, got:\n%s", out)
	}
}

func TestGenerateWithOpts_PathRoutingOrder(t *testing.T) {
	m := NewManager("")

	// Path-restricted routes should appear BEFORE unrestricted routes
	// In the new model, multiple backends for the same domain go in one HTTPRoute
	httpRoutes := []HTTPRoute{
		{Name: "app", Domain: "payne.io", Routes: []HTTPRouteBackend{
			{Backend: "192.168.8.80:80", Paths: []string{"/_matrix"}},
			{Backend: "192.168.8.80:80"},
		}},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	pathPos := strings.Index(out, "use_backend be_l7_app_0 if")
	hostPos := strings.Index(out, "use_backend be_l7_app_1 if")

	if pathPos < 0 {
		t.Fatalf("expected path-restricted use_backend for route 0, got:\n%s", out)
	}
	if hostPos < 0 {
		t.Fatalf("expected unrestricted use_backend for route 1, got:\n%s", out)
	}
	if pathPos > hostPos {
		t.Errorf("path-restricted routes (pos %d) must appear before unrestricted (pos %d):\n%s", pathPos, hostPos, out)
	}
}

func TestGenerateWithOpts_NoL7Fields_BackwardCompat(t *testing.T) {
	m := NewManager("")

	// Route with no paths/headers/ipAllow should work exactly as before
	httpRoutes := []HTTPRoute{
		{Name: "simple", Domain: "simple.payne.io", Routes: []HTTPRouteBackend{{Backend: "192.168.8.80:80"}}},
	}

	out := m.GenerateWithOpts(nil, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	if !strings.Contains(out, "acl host_simple hdr(host) -i simple.payne.io") {
		t.Errorf("expected host ACL, got:\n%s", out)
	}
	if !strings.Contains(out, "use_backend be_l7_simple_0 if host_simple") {
		t.Errorf("expected simple use_backend, got:\n%s", out)
	}
	// Should NOT have path, IP, or header rules
	if strings.Contains(out, "path_beg") {
		t.Errorf("unexpected path ACL in simple route, got:\n%s", out)
	}
	if strings.Contains(out, "http-request deny") {
		t.Errorf("unexpected IP deny in simple route, got:\n%s", out)
	}
	if strings.Contains(out, "http-response set-header") {
		t.Errorf("unexpected response header in simple route, got:\n%s", out)
	}
}

// --- Service marker and validation error tests ---

func TestGenerateWithOpts_ServiceMarkers(t *testing.T) {
	m := NewManager("")
	instances := []L4Route{
		{Name: "cloud", Domain: "cloud.example.com", BackendIP: "10.0.0.1", Subdomains: true},
	}
	httpRoutes := []HTTPRoute{
		{Name: "api", Domain: "api.example.com", Routes: []HTTPRouteBackend{{Backend: "10.0.0.5:8080"}}},
	}

	out := m.GenerateWithOpts(instances, nil, GenerateOpts{HTTPRoutes: httpRoutes})

	// L4 instance should have service marker
	if !strings.Contains(out, "# service: cloud.example.com") {
		t.Errorf("expected service marker for cloud.example.com, got:\n%s", out)
	}
	// L7 HTTP should have service marker
	if !strings.Contains(out, "# service: api.example.com") {
		t.Errorf("expected service marker for api.example.com, got:\n%s", out)
	}
}

func TestParseValidationErrors(t *testing.T) {
	output := `[NOTICE]   (123) : haproxy version is 3.0.10
[WARNING]  (123) : config : parsing [/tmp/test.cfg:42] : some warning
[ALERT]    (123) : config : parsing [/tmp/test.cfg:111]: 'http-response set-header' expects 'if'
[ALERT]    (123) : config : parsing [/tmp/test.cfg:115]: unknown keyword
[ALERT]    (123) : config : Error(s) found in configuration file : /tmp/test.cfg`

	lines := ParseValidationErrors(output)

	if len(lines) != 2 {
		t.Fatalf("expected 2 failing lines, got %d: %v", len(lines), lines)
	}
	if lines[0] != 111 {
		t.Errorf("expected first line 111, got %d", lines[0])
	}
	if lines[1] != 115 {
		t.Errorf("expected second line 115, got %d", lines[1])
	}
}

func TestParseValidationErrors_NoAlerts(t *testing.T) {
	output := `[NOTICE]   (123) : haproxy version is 3.0.10
[WARNING]  (123) : config : parsing [/tmp/test.cfg:42] : some warning
Warnings were found.`

	lines := ParseValidationErrors(output)
	if len(lines) != 0 {
		t.Errorf("expected 0 failing lines for warnings-only output, got %d", len(lines))
	}
}

func TestFindBrokenServices(t *testing.T) {
	config := `# boilerplate
frontend l7_https
    bind 127.0.0.1:8443 ssl crt /etc/haproxy/certs/
    mode http

    # service: good.example.com
    acl host_good hdr(host) -i good.example.com
    # service: bad.example.com
    acl host_bad hdr(host) -i bad.example.com
    http-response set-header X-Bad broken value if host_bad
    # service: also-good.example.com
    acl host_also_good hdr(host) -i also-good.example.com
`
	// Line 10 is the broken http-response line (1-indexed)
	broken := FindBrokenServices(config, []int{10})

	if len(broken) != 1 {
		t.Fatalf("expected 1 broken service, got %d: %v", len(broken), broken)
	}
	if broken[0] != "bad.example.com" {
		t.Errorf("expected bad.example.com, got %s", broken[0])
	}
}

func TestFindBrokenServices_MultipleLinesOneDomain(t *testing.T) {
	config := `line1
    # service: bad.example.com
line3
line4
line5
`
	// Multiple lines from the same service should deduplicate
	broken := FindBrokenServices(config, []int{3, 4, 5})

	if len(broken) != 1 {
		t.Fatalf("expected 1 broken service (deduped), got %d: %v", len(broken), broken)
	}
}

func TestFindBrokenServices_NoMarker(t *testing.T) {
	config := `line1
line2
line3
`
	// No service markers — should return empty
	broken := FindBrokenServices(config, []int{2})

	if len(broken) != 0 {
		t.Errorf("expected 0 broken services when no markers, got %d", len(broken))
	}
}