feat: installing and extracting NodeJS packages

Author: grngxd

src/func/func.go

@@ -2,10 +2,58 @@ package flightpkg
 
 import (
 	"bufio"
+	"encoding/json"
 	"fmt"
+	"io/ioutil"
+	"net/http"
 	"os"
+
+	grab "github.com/cavaliergopher/grab/v3"
+	targz "github.com/walle/targz"
 )
 
+func Install(args []string) {
+	registry := "https://registry.yarnpkg.com/"
+	// registry2 := "https://registry.npmmirror.com/"
+	if len(args) != 1 {
+		fmt.Println("flight install <pkg>")
+	} else {
+
+		resp, err := http.Get(fmt.Sprintf(registry+"%v", args[0]))
+		if err != nil {
+			fmt.Println(err)
+		}
+
+		defer resp.Body.Close()
+
+		body, err := ioutil.ReadAll(resp.Body)
+
+		if err != nil {
+			fmt.Println(err)
+		}
+
+		/* Getting the version of the package that is being installed. */
+		var data map[string]interface{}
+		json.Unmarshal(body, &data)
+
+		latest := data["dist-tags"].(map[string]interface{})["latest"].(string)
+		tarball := data["versions"].(map[string]interface{})[latest].(map[string]interface{})["dist"].(map[string]interface{})["tarball"].(string)
+
+		os.Mkdir(".flight", 0777)
+		os.Mkdir(".flight\\"+args[0], 0777)
+		_, err = grab.Get(".flight\\"+args[0], tarball)
+		if err != nil {
+			fmt.Println(err)
+		}
+		fmt.Println("Installed " + args[0] + " @ " + latest)
+
+		targz.Extract(fmt.Sprintf("./.flight/%v/%v-%v.tgz", args[0], args[0], latest), "./node_modules")
+		os.RemoveAll(".flight")
+		os.Rename(fmt.Sprintf("./node_modules/package"), fmt.Sprintf("./node_modules/%v", args[0]))
+		fmt.Println("Extracted " + args[0] + " @ " + latest)
+	}
+}
+
 func Figlet() {
 	// Open the file.
 	f, _ := os.Open("..\\misc\\flight.txt")

src/go.mod

@@ -2,4 +2,8 @@ module flightpkg
 
 go 1.18
 
-require github.com/mbndr/figlet4go v0.0.0-20190224160619-d6cef5b186ea // indirect
+require (
+	github.com/cavaliergopher/grab/v3 v3.0.1 // indirect
+	github.com/mbndr/figlet4go v0.0.0-20190224160619-d6cef5b186ea // indirect
+	github.com/walle/targz v0.0.0-20140417120357-57fe4206da5a // indirect
+)

src/go.sum

@@ -1,2 +1,6 @@
+github.com/cavaliergopher/grab/v3 v3.0.1 h1:4z7TkBfmPjmLAAmkkAZNX/6QJ1nNFdv3SdIHXju0Fr4=
+github.com/cavaliergopher/grab/v3 v3.0.1/go.mod h1:1U/KNnD+Ft6JJiYoYBAimKH2XrYptb8Kl3DFGmsjpq4=
 github.com/mbndr/figlet4go v0.0.0-20190224160619-d6cef5b186ea h1:mQncVDBpKkAecPcH2IMGpKUQYhwowlafQbfkz2QFqkc=
 github.com/mbndr/figlet4go v0.0.0-20190224160619-d6cef5b186ea/go.mod h1:QzTGLGoOqLHUBK8/EZ0v4Fa4CdyXmdyRwCHcl0YbeO4=
+github.com/walle/targz v0.0.0-20140417120357-57fe4206da5a h1:6cKSHLRphD9Fo1LJlISiulvgYCIafJ3QfKLimPYcAGc=
+github.com/walle/targz v0.0.0-20140417120357-57fe4206da5a/go.mod h1:nccQrXCnc5SjsThFLmL7hYbtT/mHJcuolPifzY5vJqE=

src/main.go

@@ -14,6 +14,10 @@ func main() {
 	} else {
 		if cli[0] == "help" {
 			funcs.Help()
+		} else if cli[0] == "install" {
+			funcs.Install(cli[1:])
+		} else {
+			fmt.Println("flight <command> [arguments]")
 		}
 	}
 }