package main

import (
	"os"
	"path/filepath"
	"testing"
)

func TestSplitRef(t *testing.T) {
	cases := []struct {
		in         string
		mount, key string
		wantErr    bool
	}{
		{"gpg/app", "gpg", "app", false},
		{"/gpg/app/", "gpg", "app", false},
		{"secret/gpg/team", "secret/gpg", "team", false},
		{"app", "", "", true},
		{"gpg/", "", "", true},
		{"/app", "", "", true},
	}
	for _, c := range cases {
		m, k, err := splitRef(c.in)
		if c.wantErr {
			if err == nil {
				t.Errorf("splitRef(%q): expected error", c.in)
			}
			continue
		}
		if err != nil {
			t.Errorf("splitRef(%q): %v", c.in, err)
			continue
		}
		if m != c.mount || k != c.key {
			t.Errorf("splitRef(%q) = (%q,%q), want (%q,%q)", c.in, m, k, c.mount, c.key)
		}
	}
}

func TestParseClip(t *testing.T) {
	cases := []struct {
		in       []string
		clip     bool
		line     int
		restName string
	}{
		{[]string{"foo"}, false, 1, "foo"},
		{[]string{"-c", "foo"}, true, 1, "foo"},
		{[]string{"foo", "--clip"}, true, 1, "foo"},
		{[]string{"--clip=3", "foo"}, true, 3, "foo"},
		{[]string{"-c2", "foo"}, true, 2, "foo"},
	}
	for _, c := range cases {
		clip, line, rest := parseClip(c.in)
		if clip != c.clip || line != c.line {
			t.Errorf("parseClip(%v) = (%v,%d), want (%v,%d)", c.in, clip, line, c.clip, c.line)
		}
		if len(rest) != 1 || rest[0] != c.restName {
			t.Errorf("parseClip(%v) rest = %v, want [%q]", c.in, rest, c.restName)
		}
	}
}

func TestGpgIDWalkUp(t *testing.T) {
	dir := t.TempDir()
	s := &store{dir: dir}

	// Root .gpg-id, plus a subtree override.
	if err := os.WriteFile(filepath.Join(dir, ".gpg-id"), []byte("gpg/personal\n"), 0o600); err != nil {
		t.Fatal(err)
	}
	if err := os.MkdirAll(filepath.Join(dir, "work", "team"), 0o700); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(filepath.Join(dir, "work", ".gpg-id"), []byte("gpg/work\n"), 0o600); err != nil {
		t.Fatal(err)
	}

	cases := map[string]string{
		"email/gmail":      "gpg/personal",
		"work/deploy":      "gpg/work",
		"work/team/secret": "gpg/work",
		"root-entry":       "gpg/personal",
	}
	for name, want := range cases {
		got, err := s.vaultRef(name)
		if err != nil {
			t.Errorf("vaultRef(%q): %v", name, err)
			continue
		}
		if got != want {
			t.Errorf("vaultRef(%q) = %q, want %q", name, got, want)
		}
	}
}

func TestVaultRefUninitialized(t *testing.T) {
	s := &store{dir: t.TempDir()}
	if _, err := s.vaultRef("anything"); err == nil {
		t.Fatal("expected error for store with no .gpg-id / .vault-id")
	}
}

// TestDualModeVaultID covers a store shared with plain gpg `pass`: `.gpg-id`
// holds GPG fingerprints, and a sibling `.vault-id` carries the Vault ref that
// passv must use.
func TestDualModeVaultID(t *testing.T) {
	dir := t.TempDir()
	s := &store{dir: dir}
	// .gpg-id has real GPG fingerprints (as plain pass would write); passv must
	// not treat those as a Vault ref.
	if err := os.WriteFile(filepath.Join(dir, ".gpg-id"),
		[]byte("ABCD1234ABCD1234ABCD1234ABCD1234ABCD1234\nDEADBEEFDEADBEEFDEADBEEFDEADBEEFDEADBEEF\n"), 0o600); err != nil {
		t.Fatal(err)
	}
	// Without a .vault-id, passv cannot know which Vault key to use.
	if _, err := s.vaultRef("email/gmail"); err == nil {
		t.Fatal("expected error when .gpg-id holds fingerprints and no .vault-id exists")
	}
	// Adding .vault-id resolves it.
	if err := os.WriteFile(filepath.Join(dir, ".vault-id"), []byte("gpg/app\n"), 0o600); err != nil {
		t.Fatal(err)
	}
	got, err := s.vaultRef("email/gmail")
	if err != nil {
		t.Fatal(err)
	}
	if got != "gpg/app" {
		t.Fatalf("vaultRef = %q, want gpg/app", got)
	}
}

func TestGenPassword(t *testing.T) {
	pw, err := genPassword(32, false)
	if err != nil {
		t.Fatal(err)
	}
	if len(pw) != 32 {
		t.Fatalf("length = %d, want 32", len(pw))
	}
	for _, r := range pw {
		if !((r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') || (r >= '0' && r <= '9')) {
			t.Fatalf("no-symbols password contains symbol %q", r)
		}
	}

	// Two generations must differ (astronomically unlikely to collide).
	a, _ := genPassword(25, true)
	b, _ := genPassword(25, true)
	if a == b {
		t.Fatal("consecutive generated passwords collided")
	}
}

func TestListSkipsHidden(t *testing.T) {
	dir := t.TempDir()
	s := &store{dir: dir}
	os.MkdirAll(filepath.Join(dir, ".git"), 0o700)
	os.WriteFile(filepath.Join(dir, ".git", "config.gpg"), []byte("x"), 0o600)
	os.WriteFile(filepath.Join(dir, ".gpg-id"), []byte("gpg/app"), 0o600)
	os.MkdirAll(filepath.Join(dir, "email"), 0o700)
	os.WriteFile(filepath.Join(dir, "email", "gmail.gpg"), []byte("x"), 0o600)
	os.WriteFile(filepath.Join(dir, "note.txt"), []byte("x"), 0o600)

	names, err := s.list("")
	if err != nil {
		t.Fatal(err)
	}
	if len(names) != 1 || names[0] != "email/gmail" {
		t.Fatalf("list = %v, want [email/gmail]", names)
	}
}