add: 'to' subcommand

Author: yarik bratashchuk

README.md

@@ -8,7 +8,7 @@
 
 ### Demo
 
-![demo](https://user-images.githubusercontent.com/12980380/31976469-6d593b0c-b940-11e7-90ef-7a0c3fbcd392.png)
+![demo](https://user-images.githubusercontent.com/12980380/32066777-96ccc284-ba89-11e7-8823-78fea6d48eb1.png)
 
 ### Quick start
 
@@ -39,6 +39,13 @@ Write message:
 $ slk write -m "how are you?"
 ```
 
+Switch to channel or private chat
+
+```
+$ slk to general // for public channel or private group
+$ slk to @max // for direct messages
+```
+
 Read last 10 messages:    
 
 ```

cmd/slk/slk.go

@@ -9,6 +9,7 @@ import (
 	_ "github.com/yarikbratashchuk/slk/internal/cli/listen"
 	_ "github.com/yarikbratashchuk/slk/internal/cli/read"
 	_ "github.com/yarikbratashchuk/slk/internal/cli/setup"
+	_ "github.com/yarikbratashchuk/slk/internal/cli/to"
 	_ "github.com/yarikbratashchuk/slk/internal/cli/write"
 )
 
@@ -47,6 +48,7 @@ Commands:
   listen - start listen chat for messages
   read   - get last 10 messages
   write  - write message
+  to     - used to switch between channels
   
 Options:
   command specific, use "slk help <command>" for details

internal/api/user.go

@@ -16,7 +16,7 @@ type userList struct {
 	} `json:"members"`
 }
 
-func GetChatUsers(conf config.Config) (users map[string]config.User, err error) {
+func GetChanUsers(conf config.Config) (users map[string]config.User, err error) {
 	data := url.Values{}
 	data.Set("token", conf.Token)
 	data.Set("channel", conf.Channel)

internal/cli/setup/setup.go

@@ -48,9 +48,9 @@ func (c *command) Run() {
 
 	c.conf.Channel = channelID
 
-	users, err := api.GetChatUsers(c.conf)
+	users, err := api.GetChanUsers(c.conf)
 	if err != nil {
-		log.Fatalf("error getting chat users: %s", err)
+		log.Fatalf("error getting channel users: %s", err)
 	}
 	c.conf.Users = users
 

internal/cli/to/to.go

@@ -0,0 +1,41 @@
+package to
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+
+	"github.com/yarikbratashchuk/slk/internal/cli"
+	"github.com/yarikbratashchuk/slk/internal/log"
+)
+
+type command struct{}
+
+func initCommand() cli.Command {
+	if len(os.Args) != 3 {
+		usage()
+	}
+	return command{}
+}
+
+func (c command) Run() {
+	cmd := exec.Command("slk", "setup", "-c", os.Args[2])
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if err := cmd.Run(); err != nil {
+		log.Fatalf("slk: %s", err)
+	}
+}
+
+func (c command) Usage() {
+	usage()
+}
+
+func usage() {
+	fmt.Printf("Usage: %s to <channel>\n", os.Args[0])
+	os.Exit(0)
+}
+
+func init() {
+	cli.RegisterCommand("to", initCommand)
+}