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init.go
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init.go
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package cmd
import (
"fmt"
"os"
"os/exec"
"os/user"
"path/filepath"
"strings"
"github.com/charmbracelet/log"
"github.com/spf13/cobra"
"github.com/j178/leetgo/config"
"github.com/j178/leetgo/constants"
"github.com/j178/leetgo/leetcode"
"github.com/j178/leetgo/utils"
)
var (
force bool
initTemplate string
)
var initCmd = &cobra.Command{
Use: "init [DIR]",
Short: "Init a leetcode workspace",
Example: "leetgo init -t us -l cpp",
Args: cobra.MaximumNArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
dir := "."
if len(args) > 0 {
dir = args[0]
}
dir, _ = filepath.Abs(dir)
if initTemplate != "" && initTemplate != "us" && initTemplate != "cn" {
return fmt.Errorf("invalid template %s, only us or cn is supported", initTemplate)
}
err := utils.CreateIfNotExists(dir, true)
if err != nil {
return err
}
err = createConfigDir()
if err != nil {
return err
}
err = createConfigFile(dir)
if err != nil {
return err
}
if gitAvailable() && !isInsideGitRepo(dir) {
_ = initGitRepo(dir)
}
err = createQuestionCache()
if err != nil {
return err
}
return nil
},
}
func init() {
initCmd.Flags().StringVarP(&initTemplate, "template", "t", "", "template to use, cn or us")
initCmd.Flags().BoolVarP(&force, "force", "f", false, "overwrite config file if exists")
_ = initCmd.RegisterFlagCompletionFunc(
"template", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
return []string{"us", "cn"}, cobra.ShellCompDirectiveNoFileComp
},
)
}
func createConfigDir() error {
dir := config.Get().HomeDir()
if utils.IsExist(dir) {
return nil
}
err := utils.MakeDir(dir)
if err != nil {
return err
}
log.Info("config dir created", "dir", dir)
return nil
}
func createConfigFile(dir string) error {
cfg := config.Get()
site := cfg.LeetCode.Site
language := cfg.Language
if initTemplate == "us" {
site = config.LeetCodeUS
language = config.EN
} else if initTemplate == "cn" {
site = config.LeetCodeCN
language = config.ZH
}
author := defaultUser()
cfg.LeetCode.Site = site
cfg.Language = language
cfg.Author = author
projectFile := filepath.Join(dir, constants.ConfigFilename)
if utils.IsExist(projectFile) && !force {
return fmt.Errorf("config file %s already exists, use -f to overwrite", utils.RelToCwd(projectFile))
}
f, err := os.Create(projectFile)
if err != nil {
return err
}
defer func() { _ = f.Close() }()
_, _ = f.WriteString("# Leetgo configuration file, see more at https://github.com/j178/leetgo\n\n")
_ = cfg.Write(f, true)
log.Info("config file created", "file", utils.RelToCwd(projectFile))
return nil
}
func createQuestionCache() error {
c := leetcode.NewClient(leetcode.ReadCredentials())
cache := leetcode.GetCache(c)
if !cache.Outdated() {
return nil
}
err := cache.Update()
if err != nil {
return err
}
return nil
}
func defaultUser() string {
username := getGitUsername()
if username != "" {
return username
}
u, err := user.Current()
if err == nil {
return u.Username
}
username = os.Getenv("USER")
if username != "" {
return username
}
return "Bob"
}
func gitAvailable() bool {
cmd := exec.Command("git", "--version")
err := cmd.Run()
return err == nil
}
func initGitRepo(dir string) error {
cmd := exec.Command("git", "init", dir)
err := cmd.Run()
if err != nil {
return err
}
err = utils.WriteOrAppendFile(filepath.Join(dir, ".gitignore"), []byte(".env\n"))
return err
}
func isInsideGitRepo(dir string) bool {
cmd := exec.Command("git", "rev-parse", "--is-inside-work-tree", dir)
err := cmd.Run()
return err == nil
}
func getGitUsername() string {
cmd := exec.Command("git", "config", "user.name")
out, err := cmd.Output()
if err != nil {
return ""
}
return strings.TrimSpace(string(out))
}