added docker username function fetcher and updated push

flist.v

@@ -2,6 +2,7 @@ import os
 import net.http
 import term
 import json
+import x.json2
 
 const (
     token_file       = os.join_path(os.home_dir(), '.config', 'tfhubtoken')
@@ -122,14 +123,51 @@ fn logout() {
     success_message('You are now logged out of Docker Hub and your Flist Hub token has been removed.')
 }
 
+fn get_docker_credential() !string {
+    // Read the Docker config file
+    config_path := os.join_path(os.home_dir(), '.docker', 'config.json')
+    config_content := os.read_file(config_path) or {
+        return error('Failed to read Docker config file: $err')
+    }
+
+    // Parse the JSON content
+    config := json2.raw_decode(config_content) or {
+        return error('Failed to parse Docker config: $err')
+    }
+
+    // Extract the credsStore value
+    creds_store := config.as_map()['credsStore'] or {
+        return error('credsStore not found in Docker config')
+    }.str()
+
+    // Execute the docker-credential command
+    cred_helper := 'docker-credential-$creds_store'
+    cred_output := os.execute('$cred_helper list')
+    if cred_output.exit_code != 0 {
+        return error('Failed to execute $cred_helper: ${cred_output.output}')
+    }
+
+    // Parse the credential list
+    cred_list := json2.raw_decode(cred_output.output) or {
+        return error('Failed to parse credential list: $err')
+    }
+
+    // Find the first docker.io entry
+    for key, value in cred_list.as_map() {
+        if key.contains('docker.io') {
+            return value.str()
+        }
+    }
+
+    return error('No docker.io credential found')
+}
+
 fn push(tag string) {
-    docker_user_result := os.execute('docker-credential-$(jq -r .credsStore ~/.docker/config.json) list | jq -r \'. | to_entries[] | select(.key | contains("docker.io")) | last(.value)\' | head -n 1')
+    docker_user := get_docker_credential() or {
-    if docker_user_result.exit_code != 0 || docker_user_result.output.trim_space() == '' {
+        error_message('Failed to get Docker username: $err')
-        error_message('Failed to get Docker username.')
         exit(1)
     }
 
-    docker_user := docker_user_result.output.trim_space()
     info_message('Docker username: $docker_user')
 
     full_tag := '${docker_user}/${tag}'