add global --use-context flag

cmd/authUseContext.go

@@ -22,7 +22,6 @@ import (
 	"github.com/spf13/cobra"
 
 	"github.com/liquidweb/liquidweb-cli/instance"
-	"github.com/liquidweb/liquidweb-cli/types/cmd"
 )
 
 var authUseContextCmd = &cobra.Command{
@@ -46,22 +45,8 @@ If you've never setup any contexts, check "auth init".`,
 		wantedContext := args[0]
 
 		// verify wantedContext is valid
-		isValid := false
-		contexts := lwCliInst.Viper.GetStringMap("liquidweb.api.contexts")
-		for _, contextInter := range contexts {
-			var context cmdTypes.AuthContext
-			if err := instance.CastFieldTypes(contextInter, &context); err != nil {
-				lwCliInst.Die(err)
-			}
-
-			if context.ContextName == wantedContext {
-				isValid = true
-				break
-			}
-		}
-
-		if !isValid {
-			lwCliInst.Die(fmt.Errorf("given context [%s] is not a valid context", wantedContext))
+		if err := instance.ValidateContext(wantedContext, lwCliInst.Viper); err != nil {
+			lwCliInst.Die(err)
 		}
 
 		// looks valid, set

cmd/root.go

@@ -32,6 +32,7 @@ import (
 
 var cfgFile string
 var lwCliInst instance.Client
+var useContext string
 
 var rootCmd = &cobra.Command{
 	Use:   "lw",
@@ -65,6 +66,7 @@ func init() {
 	cobra.OnInitialize(initConfig)
 
 	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.liquidweb-cli.yaml)")
+	rootCmd.PersistentFlags().StringVar(&useContext, "use-context", "", "forces current context, without persisting the context change")
 }
 
 func initConfig() {
@@ -88,6 +90,15 @@ func initConfig() {
 	vp.AutomaticEnv()
 	vp.ReadInConfig()
 
+	if useContext != "" {
+		if err := instance.ValidateContext(useContext, vp); err != nil {
+			utils.PrintRed("error using auth context:\n\n")
+			fmt.Printf("%s\n\n", err)
+			os.Exit(1)
+		}
+		vp.Set("liquidweb.api.current_context", useContext)
+	}
+
 	var lwCliInstErr error
 	lwCliInst, lwCliInstErr = instance.New(vp)
 	if lwCliInstErr != nil {

instance/authContext.go

@@ -0,0 +1,89 @@
+/*
+Copyright © LiquidWeb
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package instance
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+
+	"github.com/spf13/viper"
+
+	"github.com/liquidweb/liquidweb-cli/types/cmd"
+)
+
+func (client *Client) RemoveContext(context string) error {
+	// this function should be deleted and Unset in viper used instead once
+	// https://github.com/spf13/viper/pull/519
+	// is merged or similar functionality is added.
+	if context == "" {
+		return fmt.Errorf("context cannot be empty")
+	}
+
+	currentContext := client.Viper.GetString("liquidweb.api.current_context")
+	if context == currentContext {
+		return fmt.Errorf("cannot remove context currently set as current context")
+	}
+
+	contexts := client.Viper.GetStringMap("liquidweb.api.contexts")
+	if _, exists := contexts[context]; !exists {
+		return fmt.Errorf("context %s doesnt exist, cannot remove", context)
+	}
+
+	// save current config into a map, then delete requested context
+	cfgMap := client.Viper.AllSettings()
+	delete(cfgMap["liquidweb"].(map[string]interface{})["api"].(map[string]interface{})["contexts"].(map[string]interface{}), context)
+
+	// json encode modified map
+	encodedCfg, err := json.MarshalIndent(cfgMap, "", " ")
+	if err != nil {
+		return err
+	}
+
+	// read newly encoded config back into viper
+	if err := client.Viper.ReadConfig(bytes.NewBuffer(encodedCfg)); err != nil {
+		return err
+	}
+
+	// write the new viper configuration to file
+	if err := client.Viper.WriteConfig(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func ValidateContext(wantedContext string, vp *viper.Viper) error {
+	var isValid bool
+	contexts := vp.GetStringMap("liquidweb.api.contexts")
+	for _, contextInter := range contexts {
+		var context cmdTypes.AuthContext
+		if err := CastFieldTypes(contextInter, &context); err != nil {
+			return err
+		}
+
+		if context.ContextName == wantedContext {
+			isValid = true
+			break
+		}
+	}
+
+	if !isValid {
+		return fmt.Errorf("given context [%s] is not a valid context", wantedContext)
+	}
+
+	return nil
+}

instance/instance.go

@@ -77,47 +77,6 @@ func (*Client) JsonPrettyPrint(inJson string) (string, error) {
 	return outJson.String(), nil
 }
 
-func (client *Client) RemoveContext(context string) error {
-	// this function should be deleted and Unset in viper used instead once
-	// https://github.com/spf13/viper/pull/519
-	// is merged or similar functionality is added.
-	if context == "" {
-		return fmt.Errorf("context cannot be empty")
-	}
-
-	currentContext := client.Viper.GetString("liquidweb.api.current_context")
-	if context == currentContext {
-		return fmt.Errorf("cannot remove context currently set as current context")
-	}
-
-	contexts := client.Viper.GetStringMap("liquidweb.api.contexts")
-	if _, exists := contexts[context]; !exists {
-		return fmt.Errorf("context %s doesnt exist, cannot remove", context)
-	}
-
-	// save current config into a map, then delete requested context
-	cfgMap := client.Viper.AllSettings()
-	delete(cfgMap["liquidweb"].(map[string]interface{})["api"].(map[string]interface{})["contexts"].(map[string]interface{}), context)
-
-	// json encode modified map
-	encodedCfg, err := json.MarshalIndent(cfgMap, "", " ")
-	if err != nil {
-		return err
-	}
-
-	// read newly encoded config back into viper
-	if err := client.Viper.ReadConfig(bytes.NewBuffer(encodedCfg)); err != nil {
-		return err
-	}
-
-	// write the new viper configuration to file
-	if err := client.Viper.WriteConfig(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
 func (client *Client) CallLwApiInto(method string, methodArgs map[string]interface{}, obj interface{}) (err error) {
 	got, err := client.LwCliApiClient.Call(method, methodArgs)
 	if err != nil {