ALR

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/*
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 * ALR - Any Linux Repository
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 * Copyright (C) 2024 Евгений Храмов
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation, either version 3 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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package main
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import (
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	"context"
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	"fmt"
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	"github.com/urfave/cli/v2"
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	"plemya-x.ru/alr/internal/config"
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	"plemya-x.ru/alr/internal/db"
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	"plemya-x.ru/alr/internal/types"
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	"plemya-x.ru/alr/pkg/build"
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	"plemya-x.ru/alr/pkg/distro"
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	"plemya-x.ru/alr/pkg/loggerctx"
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	"plemya-x.ru/alr/pkg/manager"
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	"plemya-x.ru/alr/pkg/repos"
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	"go.elara.ws/vercmp"
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	"golang.org/x/exp/maps"
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	"golang.org/x/exp/slices"
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)
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var upgradeCmd = &cli.Command{
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	Name:    "upgrade",
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	Usage:   "Upgrade all installed packages",
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	Aliases: []string{"up"},
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	Flags: []cli.Flag{
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		&cli.BoolFlag{
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			Name:    "clean",
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			Aliases: []string{"c"},
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			Usage:   "Build package from scratch even if there's an already built package available",
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		},
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	},
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	Action: func(c *cli.Context) error {
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		ctx := c.Context
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		log := loggerctx.From(ctx)
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		info, err := distro.ParseOSRelease(ctx)
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		if err != nil {
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			log.Fatal("Error parsing os-release file").Err(err).Send()
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		}
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		mgr := manager.Detect()
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		if mgr == nil {
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			log.Fatal("Unable to detect a supported package manager on the system").Send()
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		}
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		err = repos.Pull(ctx, config.Config(ctx).Repos)
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		if err != nil {
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			log.Fatal("Error pulling repos").Err(err).Send()
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		}
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		updates, err := checkForUpdates(ctx, mgr, info)
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		if err != nil {
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			log.Fatal("Error checking for updates").Err(err).Send()
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		}
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		if len(updates) > 0 {
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			build.InstallPkgs(ctx, updates, nil, types.BuildOpts{
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				Manager:     mgr,
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				Clean:       c.Bool("clean"),
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				Interactive: c.Bool("interactive"),
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			})
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		} else {
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			log.Info("There is nothing to do.").Send()
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		}
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		return nil
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	},
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}
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func checkForUpdates(ctx context.Context, mgr manager.Manager, info *distro.OSRelease) ([]db.Package, error) {
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	installed, err := mgr.ListInstalled(nil)
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	if err != nil {
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		return nil, err
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	}
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	pkgNames := maps.Keys(installed)
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	found, _, err := repos.FindPkgs(ctx, pkgNames)
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	if err != nil {
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		return nil, err
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	}
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	var out []db.Package
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	for pkgName, pkgs := range found {
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		if slices.Contains(config.Config(ctx).IgnorePkgUpdates, pkgName) {
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			continue
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		}
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		if len(pkgs) > 1 {
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			// Puts the element with the highest version first
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			slices.SortFunc(pkgs, func(a, b db.Package) int {
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				return vercmp.Compare(a.Version, b.Version)
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			})
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		}
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		// First element is the package we want to install
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		pkg := pkgs[0]
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		repoVer := pkg.Version
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		if pkg.Release != 0 && pkg.Epoch == 0 {
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			repoVer = fmt.Sprintf("%s-%d", pkg.Version, pkg.Release)
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		} else if pkg.Release != 0 && pkg.Epoch != 0 {
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			repoVer = fmt.Sprintf("%d:%s-%d", pkg.Epoch, pkg.Version, pkg.Release)
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		}
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		c := vercmp.Compare(repoVer, installed[pkgName])
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		if c == 0 || c == -1 {
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			continue
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		} else if c == 1 {
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			out = append(out, pkg)
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		}
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	}
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	return out, nil
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}
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