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/*******************************************************************************
*
* Copyright 2017 Stefan Majewsky <majewsky@gmx.net>
*
* 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 rtree
import (
"errors"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"sort"
"strings"
"github.com/majewsky/gofu/pkg/util"
yaml "gopkg.in/yaml.v2"
)
//Index represents the contents of the index file.
type Index struct {
Repos []*Repo `yaml:"repos"`
}
func indexPath() string {
homeDir := os.Getenv("HOME")
if homeDir == "" {
util.FatalIfError(errors.New("$HOME is not set (rtree needs the HOME variable to locate its index file)"))
}
return filepath.Join(homeDir, ".rtree/index.yaml")
}
//ReadIndex reads the index file.
func ReadIndex() *Index {
//read contents of index file
path := indexPath()
buf, err := ioutil.ReadFile(path)
if err != nil {
if os.IsNotExist(err) {
return &Index{Repos: nil}
}
util.FatalIfError(err)
}
//deserialize YAML
var index Index
util.FatalIfError(yaml.Unmarshal(buf, &index))
//validate YAML
valid := true
for idx, repo := range index.Repos {
if repo.CheckoutPath == "" {
util.ShowError(fmt.Errorf("missing \"repos[%d].path\"", idx))
valid = false
}
if len(repo.Remotes) == 0 {
util.ShowError(fmt.Errorf("missing \"repos[%d].remotes\"", idx))
valid = false
}
for idx2, remote := range repo.Remotes {
switch {
case remote.Name == "":
util.ShowError(fmt.Errorf("missing \"repos[%d].remotes[%d].name\"", idx, idx2))
valid = false
case remote.URL == "":
util.ShowError(fmt.Errorf("missing \"repos[%d].remotes[%d].url\"", idx, idx2))
valid = false
}
}
}
if !valid {
util.FatalIfError(errors.New("index file is corrupted; see errors above"))
}
sort.Sort(reposByAbsPath(index.Repos))
return &index
}
type reposByAbsPath []*Repo
func (r reposByAbsPath) Len() int { return len(r) }
func (r reposByAbsPath) Less(i, j int) bool { return r[i].AbsolutePath() < r[j].AbsolutePath() }
func (r reposByAbsPath) Swap(i, j int) { r[i], r[j] = r[j], r[i] }
//Write writes the index file to disk.
func (i *Index) Write() {
buf, err := yaml.Marshal(i)
util.FatalIfError(err)
path := indexPath()
util.FatalIfError(os.MkdirAll(filepath.Dir(path), 0755))
util.FatalIfError(ioutil.WriteFile(path, buf, 0644))
}
//InteractiveRebuild implements the `rtree index` subcommand.
func (i *Index) InteractiveRebuild() error {
//check if existing index entries are still checked out
existingRepos := make(map[string]*Repo)
var newRepos []*Repo
for _, repo := range i.Repos {
gitDirPath := filepath.Join(repo.AbsolutePath(), ".git")
fi, err := os.Stat(gitDirPath)
if err == nil {
if fi.IsDir() {
//everything okay with this repo
existingRepos[repo.CheckoutPath] = repo
newRepos = append(newRepos, repo)
continue
}
return fmt.Errorf("%s is not a directory: I'm seriously confused", gitDirPath)
}
if err != nil && !os.IsNotExist(err) {
return err
}
//repo has been deleted - ask what to do
fmt.Printf("repository %s has been deleted\n", filepath.Join(RootPath, repo.CheckoutPath))
var remoteURLs []string
for _, remote := range repo.Remotes {
if remote.Name == "origin" {
remoteURLs = []string{remote.URL}
break
}
remoteURLs = append(remoteURLs, remote.URL)
}
var choice string
if len(remoteURLs) == 0 {
choice = util.Prompt(
"no remote to restore from; (d)elete from index or (s)kip?",
[]string{"d", "s"},
)
} else {
choice = util.Prompt(
fmt.Sprintf("(r)estore from %s, (d)elete from index, or (s)kip?", strings.Join(remoteURLs, " and ")),
[]string{"r", "d", "s"},
)
}
switch choice {
case "r":
err := repo.Checkout()
if err != nil {
return err
}
newRepos = append(newRepos, repo)
case "d":
continue
case "s":
newRepos = append(newRepos, repo)
}
}
//index new repos
err := ForeachPhysicalRepo(func(newRepo Repo) error {
repo, exists := existingRepos[newRepo.CheckoutPath]
if exists {
//update the existing index entry with the new remotes
repo.Remotes = newRepo.Remotes
} else {
newRepos = append(newRepos, &newRepo)
}
return nil
})
if err != nil {
return err
}
i.Repos = newRepos
return nil
}
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