package haproxy

import (
	"bytes"
	"strings"
	"testing"

	"git.netcell-it.de/projekte/edgeguard-native/internal/models"
)

func renderView(t *testing.T, v View) string {
	t.Helper()
	var buf bytes.Buffer
	if err := tpl.Execute(&buf, v); err != nil {
		t.Fatalf("template execute: %v", err)
	}
	return buf.String()
}

func TestRender_BaselineHasFrontendsAndApiBackend(t *testing.T) {
	out := renderView(t, View{})
	for _, w := range []string{
		"frontend public_http",
		"frontend public_https",
		"frontend internal_stats",
		"backend api_backend",
		"server api1 127.0.0.1:9443 check",
		"bind :443 ssl crt /etc/edgeguard/tls/",
		"path_beg /.well-known/acme-challenge/",
		"http-request redirect scheme https",
	} {
		if !strings.Contains(out, w) {
			t.Errorf("missing %q in baseline output:\n%s", w, out)
		}
	}
}

func TestRender_DomainRoutesEmitUseBackend(t *testing.T) {
	v := View{
		Backends: []models.Backend{
			{ID: 1, Name: "app", Address: "10.0.0.10", Port: 8080, Active: true},
			{ID: 2, Name: "api", Address: "10.0.0.20", Port: 9000, Active: true},
		},
		Domains: []DomainView{{
			Domain: models.Domain{ID: 1, Name: "example.com", Active: true},
			Routes: []RouteView{
				{PathPrefix: "/", BackendID: 1},
				{PathPrefix: "/api", BackendID: 2},
			},
		}},
	}
	out := renderView(t, v)
	for _, w := range []string{
		"backend eg_backend_1",
		"server app 10.0.0.10:8080",
		"backend eg_backend_2",
		"server api 10.0.0.20:9000",
		"use_backend eg_backend_1 if { hdr(host) -i example.com } { path_beg / }",
		"use_backend eg_backend_2 if { hdr(host) -i example.com } { path_beg /api }",
	} {
		if !strings.Contains(out, w) {
			t.Errorf("missing %q in output:\n%s", w, out)
		}
	}
}

func TestRender_HealthCheckPathAddsCheckInter(t *testing.T) {
	hcp := "/health"
	v := View{
		Backends: []models.Backend{
			{ID: 1, Name: "app", Address: "10.0.0.10", Port: 8080, Active: true, HealthCheckPath: &hcp},
		},
	}
	out := renderView(t, v)
	if !strings.Contains(out, "server app 10.0.0.10:8080 check inter 5s") {
		t.Errorf("expected `check inter 5s` for backend with health_check_path:\n%s", out)
	}
}