refactor: move pkg/ to internal/ and update imports

Restructure project by relocating package contents from pkg/ to internal/ to better reflect internal-only usage. This commit is initial step to prepare project for public api

internal/manager/zypper.go

@@ -0,0 +1,115 @@
+// This file was originally part of the project "LURE - Linux User REpository", created by Elara Musayelyan.
+// It has been modified as part of "ALR - Any Linux Repository" by the ALR Authors.
+//
+// ALR - Any Linux Repository
+// Copyright (C) 2025 The ALR Authors
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package manager
+
+import (
+	"fmt"
+	"os/exec"
+)
+
+// Zypper represents the Zypper package manager
+type Zypper struct {
+	CommonPackageManager
+	CommonRPM
+}
+
+func NewZypper() *YUM {
+	return &YUM{
+		CommonPackageManager: CommonPackageManager{
+			noConfirmArg: "-y",
+		},
+	}
+}
+
+func (*Zypper) Exists() bool {
+	_, err := exec.LookPath("zypper")
+	return err == nil
+}
+
+func (*Zypper) Name() string {
+	return "zypper"
+}
+
+func (*Zypper) Format() string {
+	return "rpm"
+}
+
+func (z *Zypper) Sync(opts *Opts) error {
+	opts = ensureOpts(opts)
+	cmd := z.getCmd(opts, "zypper", "refresh")
+	setCmdEnv(cmd)
+	err := cmd.Run()
+	if err != nil {
+		return fmt.Errorf("zypper: sync: %w", err)
+	}
+	return nil
+}
+
+func (z *Zypper) Install(opts *Opts, pkgs ...string) error {
+	opts = ensureOpts(opts)
+	cmd := z.getCmd(opts, "zypper", "install", "-y")
+	cmd.Args = append(cmd.Args, pkgs...)
+	setCmdEnv(cmd)
+	err := cmd.Run()
+	if err != nil {
+		return fmt.Errorf("zypper: install: %w", err)
+	}
+	return nil
+}
+
+func (z *Zypper) InstallLocal(opts *Opts, pkgs ...string) error {
+	opts = ensureOpts(opts)
+	return z.Install(opts, pkgs...)
+}
+
+func (z *Zypper) Remove(opts *Opts, pkgs ...string) error {
+	opts = ensureOpts(opts)
+	cmd := z.getCmd(opts, "zypper", "remove", "-y")
+	cmd.Args = append(cmd.Args, pkgs...)
+	setCmdEnv(cmd)
+	err := cmd.Run()
+	if err != nil {
+		return fmt.Errorf("zypper: remove: %w", err)
+	}
+	return nil
+}
+
+func (z *Zypper) Upgrade(opts *Opts, pkgs ...string) error {
+	opts = ensureOpts(opts)
+	cmd := z.getCmd(opts, "zypper", "update", "-y")
+	cmd.Args = append(cmd.Args, pkgs...)
+	setCmdEnv(cmd)
+	err := cmd.Run()
+	if err != nil {
+		return fmt.Errorf("zypper: upgrade: %w", err)
+	}
+	return nil
+}
+
+func (z *Zypper) UpgradeAll(opts *Opts) error {
+	opts = ensureOpts(opts)
+	cmd := z.getCmd(opts, "zypper", "update", "-y")
+	setCmdEnv(cmd)
+	err := cmd.Run()
+	if err != nil {
+		return fmt.Errorf("zypper: upgradeall: %w", err)
+	}
+	return nil
+}