package server

import (
	"reflect"
	"testing"
	"time"

	"sultan/pkg/accountant"
	"sultan/pkg/registry"
)

// Aus dem gemeldeten Zustand eines Knotens entstehen die Berichtszeilen:
// Hosts, Ziel (IP und FQDN), Compose-Angaben, Produkt, down/aktiv.
func TestReportRoutes(t *testing.T) {
	started := time.Date(2026, 10, 17, 8, 0, 0, 0, time.UTC)
	st := registry.NodeState{
		Host: &registry.HostInfo{FQDN: "webdocker11.lan.r25dc.de"},
		Workloads: []registry.Workload{
			{
				Name: "kunde-a-wordpress-1", Host: "10.0.0.11",
				Labels: map[string]string{
					"traefik.enable":                                    "true",
					"traefik.http.routers.wp.rule":                      "Host(`www.kunde.de`) || Host(`kunde.de`)",
					"traefik.http.services.wp.loadbalancer.server.port": "8081",
					"sultan.accountant.billing":                         "web-hosting",
				},
				Meta: &registry.WorkloadMeta{ComposeProject: "kunde-a", ComposeService: "wordpress",
					ComposeDir: "/srv/kunde-a", State: "running", StartedAt: started, Health: "healthy"},
			},
			{
				Name: "olat", Host: "10.0.0.11",
				Labels: map[string]string{
					"traefik.enable":                                      "true",
					"traefik.http.routers.olat.rule":                      "Host(`olat.kunde.de`)",
					"traefik.http.services.olat.loadbalancer.server.port": "8090",
				},
				Meta: &registry.WorkloadMeta{State: "exited"},
			},
			{
				Name: "ca", Host: "10.0.0.11",
				Labels: map[string]string{
					"traefik.enable":                                   "true",
					"traefik.tcp.routers.ca.rule":                      "HostSNI(`ca.kunde.de`)",
					"traefik.tcp.routers.ca.entrypoints":               "websecure",
					"traefik.tcp.routers.ca.tls.passthrough":           "true",
					"traefik.tcp.services.ca.loadbalancer.server.port": "9000",
				},
			},
			{Name: "kaputt", Host: "10.0.0.11", Labels: map[string]string{"traefik.enable": "vielleicht"}},
		},
		DownServices: []string{"olat"},
	}
	active := map[string]bool{"http:kunde__webdocker11__wp": true, "tcp:kunde__webdocker11__ca": true}
	got := reportRoutes("kunde", "webdocker11", st, func(proto, name string) bool { return active[proto+":"+name] })

	want := []accountant.ReportRoute{
		{Tenant: "kunde", Node: "webdocker11", Workload: "ca", Router: "ca", Protocol: "tcp",
			Hosts: []string{"ca.kunde.de"}, Backend: "10.0.0.11:9000", BackendFQDN: "webdocker11.lan.r25dc.de:9000", Active: true},
		{Tenant: "kunde", Node: "webdocker11", Workload: "kunde-a-wordpress-1", Router: "wp", Protocol: "http",
			Hosts: []string{"kunde.de", "www.kunde.de"}, Backend: "http://10.0.0.11:8081",
			BackendFQDN: "webdocker11.lan.r25dc.de:8081", Active: true, Product: "web-hosting",
			ComposeProject: "kunde-a", ComposeService: "wordpress", ComposeDir: "/srv/kunde-a",
			State: "running", StartedAt: started, Health: "healthy"},
		{Tenant: "kunde", Node: "webdocker11", Workload: "olat", Router: "olat", Protocol: "http",
			Hosts: []string{"olat.kunde.de"}, Backend: "http://10.0.0.11:8090",
			BackendFQDN: "webdocker11.lan.r25dc.de:8090", Active: false, Down: true, State: "exited"},
	}
	if !reflect.DeepEqual(got, want) {
		t.Errorf("reportRoutes =\n%+v\nerwartet\n%+v", got, want)
	}

	// Ohne Host-Infos (älterer Agent): kein FQDN-Ziel, Rest bleibt.
	st.Host = nil
	for _, r := range reportRoutes("kunde", "webdocker11", st, func(string, string) bool { return true }) {
		if r.BackendFQDN != "" || r.Backend == "" {
			t.Errorf("ohne Host-Infos: %+v", r)
		}
	}
}