fix: implement profile export toml and make it default option (#4172)

* fix: implement toml profile export and make it default option

* fix: enable display feature for toml package

crates/fluvio-cli/src/profile/export.rs

@@ -13,7 +13,7 @@ use crate::error::CliError;
 pub struct ExportOpt {
     profile_name: Option<String>,
     #[arg(
-        default_value_t = OutputType::json,
+        default_value_t = OutputType::toml,
         short = 'O',
         long = "output",
         value_name = "type",
@@ -27,8 +27,8 @@ impl ExportOpt {
     pub fn process<O: Terminal>(self, out: Arc<O>) -> Result<()> {
         let output_format = match self.output_format {
             OutputType::table => {
-                eprintln!("Table format is not supported, using JSON instead");
-                OutputType::json
+                eprintln!("Table format is not supported, using TOML instead");
+                OutputType::toml
             }
             _ => self.output_format,
         };

crates/fluvio-extension-common/Cargo.toml

@@ -26,6 +26,7 @@ serde_yaml = { workspace = true }
 semver = { workspace = true, features = ["serde"] }
 thiserror = { workspace = true }
 tracing = { workspace = true }
+toml = { workspace = true, features = ["display"] }
 
 fluvio = { workspace = true,  optional = true }
 fluvio-package-index = { workspace = true  }

crates/fluvio-extension-common/src/output/mod.rs

@@ -40,6 +40,7 @@ mod error {
 
     use serde_json::Error as SerdeJsonError;
     use serde_yaml::Error as SerdeYamlError;
+    use toml::ser::Error as SerdeTomlError;
 
     #[derive(thiserror::Error, Debug)]
     pub enum OutputError {
@@ -53,6 +54,11 @@ mod error {
             #[from]
             source: SerdeYamlError,
         },
+        #[error("Fluvio client error")]
+        SerdeTomlError {
+            #[from]
+            source: SerdeTomlError,
+        },
     }
 }
 
@@ -94,6 +100,7 @@ mod output {
         table,
         yaml,
         json,
+        toml,
     }
 
     /// OutputType defaults to table formatting

crates/fluvio-extension-common/src/output/serde.rs

@@ -13,13 +13,15 @@ use super::OutputError;
 pub enum SerializeType {
     yaml,
     json,
+    toml,
 }
 
 impl From<OutputType> for SerializeType {
     fn from(output: OutputType) -> Self {
         match output {
             OutputType::yaml => SerializeType::yaml,
             OutputType::json => SerializeType::json,
+            OutputType::toml => SerializeType::toml,
             _ => panic!("should never happen"),
         }
     }
@@ -42,6 +44,7 @@ where
         match output_type {
             SerializeType::yaml => self.to_yaml(value),
             SerializeType::json => self.to_json(value),
+            SerializeType::toml => self.to_toml(value),
         }
     }
 
@@ -68,4 +71,16 @@ where
 
         Ok(())
     }
+
+    /// convert to toml format and print to terminal
+    fn to_toml<S>(&self, value: &S) -> Result<(), OutputError>
+    where
+        S: Serialize,
+    {
+        let serialized = toml::to_string(value)?;
+
+        self.0.println(&serialized);
+
+        Ok(())
+    }
 }