create env command

To prepare project variables for terminal and for tests.

cmd/mantil/cmd/env.go

@@ -0,0 +1,33 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/mantil-io/mantil-cli/internal/mantil"
+	"github.com/spf13/cobra"
+)
+
+var envCmd = &cobra.Command{
+	Use:   "env",
+	Short: "Show project environment variables",
+	Long: `Show project environment variables
+
+You can set environment variables in terminal with:
+$ eval $(mantil env)
+`,
+	Run: func(cmd *cobra.Command, args []string) {
+		url, _ := cmd.Flags().GetBool("url")
+		env, config := mantil.Env()
+		if url {
+			fmt.Printf("%s", config.ApiURL)
+			return
+		}
+		fmt.Printf("%s", env)
+
+	},
+}
+
+func init() {
+	envCmd.Flags().BoolP("url", "u", false, "show only project api url")
+	rootCmd.AddCommand(envCmd)
+}

internal/mantil/project.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
+	"log"
 	"os"
 	"path"
 	"path/filepath"
@@ -172,6 +173,28 @@ func FindProjectRoot(initialPath string) (string, error) {
 	}
 }
 
+func Env() (string, *LocalProjectConfig) {
+	initPath := "."
+	path, err := FindProjectRoot(initPath)
+	if err != nil {
+		log.Fatal(err)
+	}
+	config, err := LoadLocalConfig(path)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return fmt.Sprintf(`export %s='%s'
+export %s='%s'
+`, EnvProjectName, config.Name,
+		EnvApiURL, config.ApiURL,
+	), config
+}
+
+const (
+	EnvProjectName = "MANTIL_PROJECT_NAME"
+	EnvApiURL      = "MANTIL_API_URL"
+)
+
 func SaveToken(projectName, token string) error {
 	home, err := os.UserHomeDir()
 	if err != nil {