aides-repo-api/internal/services/reposervice/service.go

package reposervice

import (
	"fmt"
	"os"
	"os/exec"
	"path"
	"strconv"

	"gorm.io/gorm"

	"code.alt-gnome.ru/aides-infra/aides-repo-api/internal/logger"
	"code.alt-gnome.ru/aides-infra/aides-repo-api/internal/models"
)

type Config interface {
	GetUploadDir() string
}

type Service struct {
	db     *gorm.DB
	config Config
}

func New(db *gorm.DB, cfg Config) *Service {
	return &Service{
		db:     db,
		config: cfg,
	}
}

func createSymlink(target, link string) error {
	if _, err := os.Lstat(link); err == nil {
		if err := os.Remove(link); err != nil {
			return fmt.Errorf("failed to remove existing file or symlink: %w", err)
		}
	}

	if err := os.Symlink(target, link); err != nil {
		return fmt.Errorf("failed to create symlink: %w", err)
	}

	return nil
}

func runGenbasedir(repoDir, arch, repoName string) {
	log := logger.GetLogger()
	cmd := exec.Command(
		"genbasedir",
		"--bloat",
		"--progress",
		fmt.Sprintf("--topdir=%s", repoDir),
		arch,
		repoName,
	)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	err := cmd.Run()
	if err != nil {
		log.Error(
			"Failed to run genbasedir",
			map[string]interface{}{
				"arch":  arch,
				"error": err,
			},
		)
		os.Exit(1)
	}
	log.Info("Successfully ran genbasedir", map[string]interface{}{
		"arch": arch,
	})
}

func createRepoDirs(repoDir, repoName, arch string) {
	log := logger.GetLogger()
	// Create the 'base' directory
	baseDir := path.Join(repoDir, arch, "base")
	err := os.MkdirAll(baseDir, os.ModePerm)
	if err != nil {
		log.Error("Failed to create directory", map[string]interface{}{
			"directory": baseDir,
			"err":       err,
		})
		os.Exit(1)
	}

	// Create the 'RPMS.<REPO_NAME>' directory
	rpmsDir := path.Join(repoDir, arch, fmt.Sprintf("RPMS.%s", repoName))
	err = os.MkdirAll(rpmsDir, os.ModePerm)
	if err != nil {
		log.Error("Failed to create directory", map[string]interface{}{
			"directory": rpmsDir,
			"err":       err,
		})
		os.Exit(1)
	}
}

func (s *Service) ForceUpdate() {
	var tasks []models.Task
	altRepo := models.ALTRepo{
		Name: "Sisyphus",
	}

	s.db.
		Where(&altRepo).
		First(&altRepo)

	s.db.Debug().
		Model(&models.GitRepoAltRepoTask{}).
		Select("tasks.*").
		Joins("JOIN tasks ON tasks.id = git_repo_alt_repo_tasks.last_task_id").
		Where(&models.GitRepoAltRepoTask{
			ALTRepoID: altRepo.ID,
		}).
		Preload("Files").
		Find(&tasks)

	repoPath := path.Join(s.config.GetUploadDir(), "future_repo", "Sisyphus")

	err := os.MkdirAll(
		repoPath,
		os.ModePerm,
	)
	if err != nil {
		panic(err)
	}

	repoName := "aides"
	architectures := []string{"x86_64", "noarch"}

	for _, arch := range architectures {
		createRepoDirs(repoPath, repoName, arch)
	}

	for _, el := range tasks {
		for _, fileInfo := range el.Files {
			localFilePath := path.Join(
				strconv.FormatUint(uint64(el.ID), 10), fileInfo.Name,
			)
			symLink := path.Join(
				s.config.GetUploadDir(),
				"future_repo",
				"Sisyphus",
				fileInfo.Arch,
				"RPMS.aides",
				fileInfo.Name,
			)
			targetPath := path.Join("../../../../tasks/", localFilePath)
			err := createSymlink(targetPath, symLink)
			if err != nil {
				panic(err)
			}
		}
	}

	for _, arch := range architectures {
		runGenbasedir(repoPath, arch, repoName)
	}

	s.db.Debug().
		Model(&models.GitRepoAltRepoTask{}).
		Where(&models.GitRepoAltRepoTask{
			ALTRepoID: altRepo.ID,
		}).
		Update(
			"current_task_id", gorm.Expr("last_task_id"),
		)

	err = os.MkdirAll(path.Join(s.config.GetUploadDir(), "repo"), os.ModePerm)
	if err != nil {
		panic(err)
	}

	aPath := path.Join(s.config.GetUploadDir(), "future_repo", "Sisyphus")
	bPath := path.Join(s.config.GetUploadDir(), "repo", "Sisyphus")
	cPath := path.Join(s.config.GetUploadDir(), "repo", ".Sisyphus")

	if _, err := os.Stat(bPath); err == nil {
		if err := os.Rename(bPath, cPath); err != nil {
			panic(err)
		}
	} else if !os.IsNotExist(err) {
		panic(err)
	}

	if err := os.Rename(aPath, bPath); err != nil {
		panic(err)
	}

	if err := os.RemoveAll(cPath); err != nil {
		panic(err)
	}

	if err := os.RemoveAll(path.Join(s.config.GetUploadDir(), "future_repo")); err != nil {
		panic(err)
	}
}