feat: import entries from a json file

CHANGELOG.md

@@ -13,6 +13,7 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 - Generate random password
 - Print the expiration time of TOTP code
 - Export a wallet in json
+- Import entries from a json file
 
 ## Changed
 

gpm/cli.go

@@ -17,6 +17,7 @@ package gpm
 import(
   "bufio"
   "fmt"
+  "io/ioutil"
   "os"
   "strconv"
   "syscall"
@@ -255,6 +256,34 @@ func (c *Cli) copyEntry() {
   }
 }
 
+// Import entries from json file
+func (c *Cli) ImportWallet() {
+  c.loadWallet()
+
+   _, err := os.Stat(*IMPORT)
+  if err != nil {
+    c.error(fmt.Sprintf("%s", err))
+  }
+
+  data, err := ioutil.ReadFile(*IMPORT)
+  if err != nil {
+    c.error(fmt.Sprintf("%s", err))
+  }
+
+  err = c.Wallet.Import(data)
+  if err != nil {
+    c.error(fmt.Sprintf("%s", err))
+  }
+
+  err = c.Wallet.Save()
+  if err != nil {
+    c.error(fmt.Sprintf("%s", err))
+  }
+
+  fmt.Println("the import was successful")
+}
+
+// Export a wallet in json format
 func (c *Cli) ExportWallet() {
   c.loadWallet()
 

gpm/main.go

@@ -38,6 +38,7 @@ var(
   LETTER  = flag.Bool("letter", false, "use letter to generate a random password")
   SPECIAL = flag.Bool("special", false, "use special chars to generate a random password")
   EXPORT  = flag.Bool("export", false, "export a wallet in json format")
+  IMPORT  = flag.String("import", "", "import entries from a json file")
   HELP    = flag.Bool("help", false, "print this help message")
 )
 
@@ -62,6 +63,8 @@ func Run() {
     cli.updateEntry()
   } else if *DELETE {
     cli.deleteEntry()
+  } else if *IMPORT != "" {
+    cli.ImportWallet()
   } else if *EXPORT {
     cli.ExportWallet()
   }

gpm/wallet.go

@@ -190,6 +190,25 @@ func (w *Wallet) UpdateEntry(entry Entry) error {
   return fmt.Errorf("unknown error during the update")
 }
 
+// Import a wallet from a json string
+func (w *Wallet) Import(data []byte) error {
+  var entries []Entry
+
+  err := json.Unmarshal([]byte(data), &entries)
+  if err != nil {
+    return err
+  }
+
+  for _, entry := range entries {
+    err = w.AddEntry(entry)
+    if err != nil {
+      return err
+    }
+  }
+
+  return nil
+}
+
 // Export a wallet to json
 func (w *Wallet) Export() (string, error) {
   data, err := json.Marshal(&w.Entries)