feat: add argument to just print the request instead of sending it

linkup-cli/src/main.rs

@@ -198,7 +198,10 @@ enum Commands {
         )]
         config: Option<String>,
         // TODO: Easy way to have validation and parsing of tuples.
+        #[arg(help = "service=url pairs to preview.")]
         services: Vec<String>,
+        #[arg(long, help = "Print the request body instead of sending it.")]
+        print_request: bool,
     },
 }
 
@@ -219,6 +222,10 @@ fn main() -> Result<()> {
             LocalDNSSubcommand::Uninstall => local_dns::uninstall(config),
         },
         Commands::Completion { shell } => completion(shell),
-        Commands::Preview { config, services } => preview(config, services),
+        Commands::Preview {
+            config,
+            services,
+            print_request,
+        } => preview(config, services, *print_request),
     }
 }

linkup-cli/src/preview.rs

@@ -5,7 +5,11 @@ use linkup::CreatePreviewRequest;
 use reqwest::blocking::Client;
 use reqwest::StatusCode;
 
-pub fn preview(config: &Option<String>, services: &[String]) -> Result<(), CliError> {
+pub fn preview(
+    config: &Option<String>,
+    services: &[String],
+    print_request: bool,
+) -> Result<(), CliError> {
     if services.is_empty() {
         // TODO: Oliver don't care about this error handling (type)
         return Err(CliError::BadConfig("No services specified".to_string()));
@@ -21,16 +25,20 @@ pub fn preview(config: &Option<String>, services: &[String]) -> Result<(), CliEr
     let input_config = get_config(&config_path)?;
     let create_preview_request: CreatePreviewRequest =
         input_config.create_preview_request(&services);
+    let url = input_config.linkup.remote.clone();
+    let create_req_json = serde_json::to_string(&create_preview_request)
+        .map_err(|e| CliError::LoadConfig(url.to_string(), e.to_string()))?;
+
+    if print_request {
+        println!("{}", create_req_json);
+        return Ok(());
+    }
 
     let client = Client::new();
-    let url = input_config.linkup.remote.clone();
     let endpoint = url
         .join("/preview")
         .map_err(|e| CliError::LoadConfig(url.to_string(), e.to_string()))?;
 
-    let create_req_json = serde_json::to_string(&create_preview_request)
-        .map_err(|e| CliError::LoadConfig(url.to_string(), e.to_string()))?;
-
     let response = client
         .post(endpoint.clone())
         .body(create_req_json)