// 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 Евгений Храмов.
//
// ALR - Any Linux Repository
// Copyright (C) 2025 Евгений Храмов
//
// 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 main

import (
	"log/slog"
	"os"
	"path/filepath"
	"strings"

	"github.com/leonelquinteros/gotext"
	"github.com/urfave/cli/v2"

	"gitea.plemya-x.ru/Plemya-x/ALR/internal/cliutils"
	appbuilder "gitea.plemya-x.ru/Plemya-x/ALR/internal/cliutils/app_builder"
	"gitea.plemya-x.ru/Plemya-x/ALR/internal/osutils"
	"gitea.plemya-x.ru/Plemya-x/ALR/internal/types"
	"gitea.plemya-x.ru/Plemya-x/ALR/internal/utils"
	"gitea.plemya-x.ru/Plemya-x/ALR/pkg/build"
	"gitea.plemya-x.ru/Plemya-x/ALR/pkg/distro"
	"gitea.plemya-x.ru/Plemya-x/ALR/pkg/manager"
)

func BuildCmd() *cli.Command {
	return &cli.Command{
		Name:  "build",
		Usage: gotext.Get("Build a local package"),
		Flags: []cli.Flag{
			&cli.StringFlag{
				Name:    "script",
				Aliases: []string{"s"},
				Value:   "alr.sh",
				Usage:   gotext.Get("Path to the build script"),
			},
			&cli.StringFlag{
				Name:    "subpackage",
				Aliases: []string{"sb"},
				Usage:   gotext.Get("Specify subpackage in script (for multi package script only)"),
			},
			&cli.StringFlag{
				Name:    "package",
				Aliases: []string{"p"},
				Usage:   gotext.Get("Name of the package to build and its repo (example: default/go-bin)"),
			},
			&cli.BoolFlag{
				Name:    "clean",
				Aliases: []string{"c"},
				Usage:   gotext.Get("Build package from scratch even if there's an already built package available"),
			},
		},
		Action: func(c *cli.Context) error {
			if err := utils.EnuseIsPrivilegedGroupMember(); err != nil {
				return nil
			}

			wd, err := os.Getwd()
			if err != nil {
				return cliutils.FormatCliExit(gotext.Get("Error getting working directory"), err)
			}

			wd, wdCleanup, err := Mount(wd)
			if err != nil {
				return err
			}
			defer wdCleanup()

			ctx := c.Context

			deps, err := appbuilder.
				New(ctx).
				WithConfig().
				WithDB().
				WithReposNoPull().
				Build()
			if err != nil {
				return cli.Exit(err, 1)
			}
			defer deps.Defer()

			var script string
			var packages []string

			// Обнаружение менеджера пакетов
			mgr := manager.Detect()
			if mgr == nil {
				slog.Error(gotext.Get("Unable to detect a supported package manager on the system"))
				os.Exit(1)
			}

			info, err := distro.ParseOSRelease(ctx)
			if err != nil {
				return cliutils.FormatCliExit(gotext.Get("Error parsing os release"), err)
			}

			var res *build.BuildResult

			var scriptArgs *build.BuildPackageFromScriptArgs
			var dbArgs *build.BuildPackageFromDbArgs

			switch {
			case c.IsSet("script"):
				script, err = filepath.Abs(c.String("script"))
				if err != nil {
					return cliutils.FormatCliExit(gotext.Get("Cannot get absolute script path"), err)
				}

				packages = append(packages, c.String("script-package"))

				scriptArgs = &build.BuildPackageFromScriptArgs{
					Script:   script,
					Packages: packages,
					BuildArgs: build.BuildArgs{
						Opts: &types.BuildOpts{
							Clean:       c.Bool("clean"),
							Interactive: c.Bool("interactive"),
						},
						PkgFormat_: build.GetPkgFormat(mgr),
						Info:       info,
					},
				}
			case c.IsSet("package"):
				// TODO: handle multiple packages
				packageInput := c.String("package")

				arr := strings.Split(packageInput, "/")
				var packageSearch string
				if len(arr) == 2 {
					packageSearch = arr[1]
				} else {
					packageSearch = arr[0]
				}

				pkgs, _, _ := deps.Repos.FindPkgs(ctx, []string{packageSearch})
				pkg, ok := pkgs[packageSearch]
				if len(pkg) < 1 || !ok {
					slog.Error(gotext.Get("Package not found"))
					os.Exit(1)
				}

				if pkg[0].BasePkgName != "" {
					packages = append(packages, pkg[0].Name)
				}

				dbArgs = &build.BuildPackageFromDbArgs{
					Package:  &pkg[0],
					Packages: packages,
					BuildArgs: build.BuildArgs{
						Opts: &types.BuildOpts{
							Clean:       c.Bool("clean"),
							Interactive: c.Bool("interactive"),
						},
						PkgFormat_: build.GetPkgFormat(mgr),
						Info:       info,
					},
				}
			default:
				return cliutils.FormatCliExit(gotext.Get("Nothing to build"), nil)
			}

			if scriptArgs != nil {
				scriptFile := filepath.Base(scriptArgs.Script)
				newScriptDir, scriptDirCleanup, err := Mount(filepath.Dir(scriptArgs.Script))
				if err != nil {
					return err
				}
				defer scriptDirCleanup()
				scriptArgs.Script = filepath.Join(newScriptDir, scriptFile)
			}

			if err := utils.ExitIfCantDropCapsToAlrUser(); err != nil {
				return err
			}

			builder, err := build.NewMainBuilder(
				deps.Cfg,
				deps.Repos,
			)
			if err != nil {
				return err
			}

			if scriptArgs != nil {
				res, err = builder.BuildPackageFromScript(
					ctx,
					scriptArgs,
				)
			} else if dbArgs != nil {
				res, err = builder.BuildPackageFromDb(
					ctx,
					dbArgs,
				)
			}

			if err != nil {
				return cliutils.FormatCliExit(gotext.Get("Error building package"), err)
			}

			// Перемещение собранных пакетов в рабочую директорию
			for _, pkgPath := range res.PackagePaths {
				name := filepath.Base(pkgPath)
				err = osutils.Move(pkgPath, filepath.Join(wd, name))
				if err != nil {
					return cliutils.FormatCliExit(gotext.Get("Error moving the package"), err)
				}
			}

			slog.Info(gotext.Get("Done"))

			return nil
		},
	}
}