// 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 (
	"fmt"
	"log/slog"
	"os"

	"github.com/leonelquinteros/gotext"
	"github.com/urfave/cli/v2"
	"golang.org/x/exp/slices"

	"gitea.plemya-x.ru/Plemya-x/ALR/internal/config"
	database "gitea.plemya-x.ru/Plemya-x/ALR/internal/db"
	"gitea.plemya-x.ru/Plemya-x/ALR/pkg/manager"
	"gitea.plemya-x.ru/Plemya-x/ALR/pkg/repos"
)

func ListCmd() *cli.Command {
	return &cli.Command{
		Name:    "list",
		Usage:   gotext.Get("List ALR repo packages"),
		Aliases: []string{"ls"},
		Flags: []cli.Flag{
			&cli.BoolFlag{
				Name:    "installed",
				Aliases: []string{"I"},
			},
		},
		Action: func(c *cli.Context) error {
			ctx := c.Context
			cfg := config.New()
			db := database.New(cfg)
			err := db.Init(ctx)
			if err != nil {
				slog.Error(gotext.Get("Error initialization database"), "err", err)
				os.Exit(1)
			}
			rs := repos.New(cfg, db)

			if cfg.AutoPull(ctx) {
				err = rs.Pull(ctx, cfg.Repos(ctx))
				if err != nil {
					slog.Error(gotext.Get("Error pulling repositories"), "err", err)
					os.Exit(1)
				}
			}

			where := "true"
			args := []any(nil)
			if c.NArg() > 0 {
				where = "name LIKE ? OR json_array_contains(provides, ?)"
				args = []any{c.Args().First(), c.Args().First()}
			}

			result, err := db.GetPkgs(ctx, where, args...)
			if err != nil {
				slog.Error(gotext.Get("Error getting packages"), "err", err)
				os.Exit(1)
			}
			defer result.Close()

			var installed map[string]string
			if c.Bool("installed") {
				mgr := manager.Detect()
				if mgr == nil {
					slog.Error(gotext.Get("Unable to detect a supported package manager on the system"))
					os.Exit(1)
				}

				installed, err = mgr.ListInstalled(&manager.Opts{AsRoot: false})
				if err != nil {
					slog.Error(gotext.Get("Error listing installed packages"), "err", err)
					os.Exit(1)
				}
			}

			for result.Next() {
				var pkg database.Package
				err := result.StructScan(&pkg)
				if err != nil {
					return err
				}

				if slices.Contains(cfg.IgnorePkgUpdates(ctx), pkg.Name) {
					continue
				}

				version := pkg.Version
				if c.Bool("installed") {
					instVersion, ok := installed[pkg.Name]
					if !ok {
						continue
					} else {
						version = instVersion
					}
				}

				fmt.Printf("%s/%s %s\n", pkg.Repository, pkg.Name, version)
			}

			if err != nil {
				slog.Error(gotext.Get("Error iterating over packages"), "err", err)
				os.Exit(1)
			}

			return nil
		},
	}
}