package main

import (
	"reflect"
	"strings"
	"testing"

	"git.zb-server.de/Sebi/ssh-netbox-wrapper/internal/cache"
	"git.zb-server.de/Sebi/ssh-netbox-wrapper/internal/config"
)

func TestExpandSelectors(t *testing.T) {
	cfg := &config.Config{
		Hosts: []config.StaticHost{{Name: "box", Address: "10.0.0.1", Tags: []string{"Web Servers"}}},
		Groups: map[string][]string{
			"all":  {"@web", "db1", "box"},
			"web":  {"web1", "tag:web-servers", "web1"},
			"loop": {"@loop"},
		},
	}
	c := cache.New(t.TempDir()+"/hosts.json", 60).WithStatic(cfg.Hosts)
	got, _, err := expandSelectors(cfg, c, []string{"@all", "WEB1"}, "")
	if err != nil || !reflect.DeepEqual(got, []string{"web1", "box", "db1"}) {
		t.Fatalf("got %v %v", got, err)
	}
	if _, _, err := expandSelectors(cfg, c, []string{"@loop"}, ""); err == nil || !strings.Contains(err.Error(), "contains itself") {
		t.Fatalf("cycle: %v", err)
	}
	if _, _, err := expandSelectors(cfg, c, []string{"@nope"}, ""); err == nil || !strings.Contains(err.Error(), "available: @all, @loop, @web") {
		t.Fatalf("unknown group: %v", err)
	}
	if _, _, err := expandSelectors(cfg, c, []string{"tag:web-servers"}, "device"); err == nil {
		t.Fatal("--kind device must exclude static hosts")
	}
}

// Without a reachable NetBox, tag: and cluster: fall back to the cache.
func TestExpandSelectorsCacheFallback(t *testing.T) {
	cfg := &config.Config{NetBox: config.NetBoxConfig{URL: "http://127.0.0.1:1", Token: "t", TokenVersion: 1}}
	c := cache.New(t.TempDir()+"/hosts.json", 60)
	c.Upsert(cache.Entry{Name: "node2", Kind: "device", Cluster: "pve"})
	c.Upsert(cache.Entry{Name: "node1", Kind: "device", Cluster: "pve", Tags: []string{"pve"}})
	c.Upsert(cache.Entry{Name: "vm1", Kind: "vm", Cluster: "pve"})
	got, warnings, err := expandSelectors(cfg, c, []string{"cluster:PVE"}, "")
	if err != nil || !reflect.DeepEqual(got, []string{"node1", "node2"}) || len(warnings) != 1 {
		t.Fatalf("devices: %v %v %v", got, warnings, err)
	}
	if got, _, _ := expandSelectors(cfg, c, []string{"cluster:pve"}, "all"); len(got) != 3 {
		t.Fatalf("all: %v", got)
	}
	if _, _, err := expandSelectors(cfg, c, []string{"cluster:other"}, ""); err == nil || !strings.Contains(err.Error(), "--kind vm") {
		t.Fatalf("empty cluster: %v", err)
	}
}

func TestMultiLabelAndPaneArgv(t *testing.T) {
	for selectors, want := range map[string]string{"@k8s": "k8s", "cluster:pve-fsn1": "pve-fsn1", "tag:a.b": "a-b", "a b": "multi"} {
		if got := multiLabel(strings.Fields(selectors)); got != want {
			t.Errorf("%q: got %q", selectors, got)
		}
	}
	t.Setenv("XDG_CONFIG_HOME", "/cfg")
	t.Setenv("NETSSH_NETBOX_TOKEN", "secret")
	argv := strings.Join(paneArgv("prod/web1", multiFlags{user: "ops", jump: "jh"}), " ")
	for _, want := range []string{"NETSSH_NO_REFRESH=1", "XDG_CONFIG_HOME=/cfg", "--jump jh -l ops prod/web1"} {
		if !strings.Contains(argv, want) {
			t.Errorf("argv lacks %q: %s", want, argv)
		}
	}
	if strings.Contains(argv, "secret") {
		t.Fatalf("token leaked into the pane arguments: %s", argv)
	}
}

func TestMultiDryRun(t *testing.T) {
	prepareConfig(t, "hosts:\n  - {name: a, address: 10.0.0.1, tags: [web]}\n  - {name: b, address: 10.0.0.2, tags: [web]}\ngroups:\n  web: [\"tag:web\"]\n")
	out, err := runNetssh(t, "multi", "--dry-run", "--tmux", "--sync", "@web")
	if err != nil {
		t.Fatalf("%s %v", out, err)
	}
	for _, want := range []string{"# 2 hosts: a b", "tmux new-session -d -x 240 -y 70 -s netssh-web", "synchronize-panes on", "tmux attach-session -t netssh-web"} {
		if !strings.Contains(out, want) {
			t.Errorf("missing %q:\n%s", want, out)
		}
	}
	if out, err := runNetssh(t, "multi", "--dry-run", "--zellij", "a", "b"); err != nil || !strings.Contains(out, `pane name="b"`) {
		t.Errorf("zellij: %s %v", out, err)
	}
	if out, err := runNetssh(t, "sync"); err == nil || !strings.Contains(out, "inside tmux or zellij") {
		t.Errorf("sync outside: %s %v", out, err)
	}
}