feat(meta): impl ToString for Meta

2 files changed, 39 insertions, 0 deletions

diff --git a/src/meta.rs b/src/meta.rs
index 9ff2712..3973d3b 100644
--- a/src/meta.rs
+++ b/src/meta.rs
@@ -27,6 +27,25 @@ pub struct Meta {
   /// The parameters of a Gemini response
   parameters: HashMap<String, String>,
 }
+impl ToString for Meta {
+  fn to_string(&self) -> String {
+    format!("{}{}", self.mime, {
+      let mut parameters = self
+        .parameters
+        .iter()
+        .map(|(k, v)| format!("{}={}", *k, v))
+        .collect::<Vec<_>>();
+
+      parameters.reverse();
+
+      if parameters.is_empty() {
+        "".to_string()
+      } else {
+        format!("; {}", parameters.join("; "))
+      }
+    })
+  }
+}
 impl Meta {
   #[must_use]
   pub fn from_string(meta: &str) -> Self {
diff --git a/tests/meta.rs b/tests/meta.rs
index 5690850..2bcccf1 100644
--- a/tests/meta.rs
+++ b/tests/meta.rs
@@ -21,6 +21,26 @@ mod test {
   use germ::meta::Meta;
 
   #[test]
+  fn meta_to_string_without_parameters() {
+    let original_string = "text/gemini";
+
+    assert_eq!(
+      Meta::from_string(original_string).to_string(),
+      original_string
+    );
+  }
+
+  #[test]
+  fn meta_to_string_with_parameters() {
+    let original_string = "text/gemini; hi=2; hi2=string=2";
+
+    assert_eq!(
+      Meta::from_string(original_string).to_string(),
+      original_string
+    );
+  }
+
+  #[test]
   fn meta_to_mime_without_parameters() {
     let meta = Meta::from_string("text/gemini");