package shortcuts_test

import (
	"testing"

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

func TestNormalize(t *testing.T) {
	cfg := config.ShortcutsConfig{
		Domains:      []string{".example.com", ".example.de"},
		StripHyphens: true,
	}

	cases := []struct {
		input string
		want  string
	}{
		{"fsn1-web01.example.com", "fsn1web01"},
		{"fsn1-web01.example.de", "fsn1web01"},
		{"FSN1-WEB01.EXAMPLE.COM", "fsn1web01"},
		{"fsn1-web01", "fsn1web01"},
		{"web01.example.com", "web01"},
		{"web01.other.com", "web01.other.com"}, // unknown domain not stripped
	}

	for _, c := range cases {
		got := shortcuts.Normalize(c.input, cfg)
		if got != c.want {
			t.Errorf("Normalize(%q) = %q, want %q", c.input, got, c.want)
		}
	}
}

func TestNormalizeNoHyphenStrip(t *testing.T) {
	cfg := config.ShortcutsConfig{
		Domains:      []string{".example.com"},
		StripHyphens: false,
	}

	got := shortcuts.Normalize("fsn1-web01.example.com", cfg)
	want := "fsn1-web01"
	if got != want {
		t.Errorf("Normalize = %q, want %q", got, want)
	}
}

func TestAliasName_WithDomainAndHyphens(t *testing.T) {
	cfg := config.ShortcutsConfig{
		Domains:      []string{".example.com"},
		StripHyphens: true,
	}
	got := shortcuts.AliasName("fsn1-web01.example.com", cfg)
	want := "fsn1web01"
	if got != want {
		t.Errorf("AliasName = %q, want %q", got, want)
	}
}

func TestAliasName_DotReplacement(t *testing.T) {
	cfg := config.ShortcutsConfig{
		Domains: []string{".example.com"},
	}
	// "web01.other.com" — domain not stripped, remaining dots → underscores
	got := shortcuts.AliasName("web01.other.com", cfg)
	want := "web01_other_com"
	if got != want {
		t.Errorf("AliasName = %q, want %q", got, want)
	}
}

func TestAliasName_NoConfig(t *testing.T) {
	cfg := config.ShortcutsConfig{}
	got := shortcuts.AliasName("web01.example.com", cfg)
	want := "web01_example_com"
	if got != want {
		t.Errorf("AliasName = %q, want %q", got, want)
	}
}

func TestNormalizeRewrites(t *testing.T) {
	cfg := config.ShortcutsConfig{
		Domains:  []string{".hoster.de"},
		Rewrites: []config.ShortcutRewrite{{Pattern: `^([a-z]+)[0-9]+-`, Replace: "$1"}},
	}
	for input, want := range map[string]string{
		"fsn1-bx1.hoster.de": "fsnbx1",
		"FSN1-BX1.hoster.de": "fsnbx1",
		"fsn1-bx1":           "fsnbx1",
		"fsnbx1":             "fsnbx1", // the shortcut itself is left alone
		"web01.hoster.de":    "web01",
	} {
		if got := shortcuts.Normalize(input, cfg); got != want {
			t.Errorf("Normalize(%q) = %q, want %q", input, got, want)
		}
	}
	if got := shortcuts.AliasName("fsn1-bx1.hoster.de", cfg); got != "fsnbx1" {
		t.Errorf("AliasName = %q", got)
	}
}

func TestNormalizeRewritesOrder(t *testing.T) {
	// Rules run in order after domain stripping, before hyphen stripping.
	cfg := config.ShortcutsConfig{
		Domains:      []string{".hoster.de"},
		StripHyphens: true,
		Rewrites: []config.ShortcutRewrite{
			{Pattern: `\.hoster\.de$`, Replace: "-never"},
			{Pattern: `^fsn`, Replace: "f"},
			{Pattern: `^f1`, Replace: "falkenstein"},
		},
	}
	if got := shortcuts.Normalize("fsn1-bx-1.hoster.de", cfg); got != "falkensteinbx1" {
		t.Fatalf("got %q", got)
	}
}