Add update-channel-list subcmd

Author: thinca

subcmd/subcmd.go

@@ -14,6 +14,7 @@ func Run() error {
     download-emoji
     download-files
     generate-html
+    update-channel-list
     update-user-list`)
 		return nil
 	}
@@ -29,6 +30,8 @@ func Run() error {
 		return DownloadFiles(args)
 	case "generate-html":
 		return GenerateHTML(args)
+	case "update-channel-list":
+		return UpdateChannelList(args)
 	case "update-user-list":
 		return UpdateUserList(args)
 	}

subcmd/update_channel_list.go

@@ -0,0 +1,35 @@
+package subcmd
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/vim-jp/slacklog-generator/internal/slacklog"
+)
+
+func UpdateChannelList(args []string) error {
+	slackToken := os.Getenv("SLACK_TOKEN")
+	if slackToken == "" {
+		return fmt.Errorf("$SLACK_TOKEN required")
+	}
+
+	if len(args) < 1 {
+		fmt.Println("Usage: go run scripts/main.go update-channel-list {out-file}")
+		return nil
+	}
+
+	outFile := filepath.Clean(args[0])
+
+	request := slacklog.APIRequest{
+		SlackToken: slackToken,
+		APIMethod:  "conversations.list",
+		JSONKey:    "channels",
+	}
+	err := slacklog.DownloadEntitiesToFile(request, outFile)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}