[github] Use Option<&str> instead of Option<DateTime> for list_workflow_runs's created parameter.

The issue is described in more details in github/rest-api-description#2088

For now, this change will treat the created parameter as an optional
str, which it would probably do if the parameter had a custom format
defined.
Alternatively, one oculd try to implement a proper datetime rnage that
follows the [Query for
dates](https://docs.github.com/en/search-github/getting-started-with-searching-on-github/understanding-the-search-syntax#query-for-dates)
format, but this is maybe more work than one would benefit by
implementing the search formating on the user side.

Author: chantra

generator/src/functions.rs

@@ -138,7 +138,7 @@ pub fn generate_files(
                 content
             };
 
-            let docs = get_fn_docs(o, m, p, parameters, ts)?;
+            let docs = get_fn_docs(proper_name, o, m, p, parameters, ts)?;
 
             let mut bounds: Vec<String> = Vec::new();
 
@@ -727,7 +727,7 @@ fn get_fn_params(
         let nam = &to_snake_case(&parameter_data.name);
 
         if !fn_params.contains(nam) && !fn_params.contains(&format!("{}_", nam)) {
-            let typ = parameter_data.render_type(&param_name, ts)?;
+            let typ = parameter_data.render_type(proper_name, &param_name, ts)?;
             if nam == "ref"
                 || nam == "type"
                 || nam == "foo"
@@ -1143,6 +1143,7 @@ fn get_fn_inner(
 }
 
 fn get_fn_docs(
+    proper_name: &str,
     o: &openapiv3::Operation,
     m: &str,
     p: &str,
@@ -1215,7 +1216,7 @@ fn get_fn_docs(
         }
 
         let nam = &to_snake_case(&clean_name(&parameter_data.name));
-        let typ = parameter_data.render_type(&param_name, ts)?;
+        let typ = parameter_data.render_type(proper_name, &param_name, ts)?;
 
         if nam == "ref"
             || nam == "type"

generator/src/main.rs

@@ -169,11 +169,11 @@ where
 }
 
 trait ParameterDataExt {
-    fn render_type(&self, name: &str, ts: &mut TypeSpace) -> Result<String>;
+    fn render_type(&self, proper_name: &str, name: &str, ts: &mut TypeSpace) -> Result<String>;
 }
 
 impl ParameterDataExt for openapiv3::ParameterData {
-    fn render_type(&self, name: &str, ts: &mut TypeSpace) -> Result<String> {
+    fn render_type(&self, proper_name: &str, name: &str, ts: &mut TypeSpace) -> Result<String> {
         use openapiv3::{SchemaKind, Type};
 
         // Cleanup the name.
@@ -250,9 +250,20 @@ impl ParameterDataExt for openapiv3::ParameterData {
 
                                 //println!("XXX min/max length");
                                 //}
-
                                 match &st.format {
-                                    Item(DateTime) => "chrono::DateTime<chrono::Utc>".to_string(),
+                                    // FIXME: In [list_workflow_runs](https://docs.rs/octorust/latest/octorust/actions/struct.Actions.html#method.list_workflow_runs), the created
+                                    // parameter is an optional DateTime as specified in github spec, but in practice, it is some date-time range of sort as specificed by the
+                                    // [search syntax](https://docs.github.com/en/search-github/getting-started-with-searching-on-github/understanding-the-search-syntax#query-for-dates).
+                                    // Convert this to an Option<&str> so the interface do not change for people not
+                                    // using the parameter currently, if they were, it was not working as they expected unless they looked for a specified date-time.
+                                    // https://github.com/github/rest-api-description/issues/2088
+                                    Item(DateTime) => {
+                                        if proper_name == "GitHub" && self.name == "created" {
+                                            "Option<&str>".to_string()
+                                        } else {
+                                            "chrono::DateTime<chrono::Utc>".to_string()
+                                        }
+                                    }
                                     Item(Date) => "chrono::NaiveDate".to_string(),
                                     Item(Password) => "&str".to_string(),
                                     // TODO: as per the spec this is base64 encoded chars.
@@ -1419,7 +1430,6 @@ impl TypeSpace {
         } else {
             "".to_string()
         };
-
         let mut s = sc.clone();
 
         // If we have an additional description and it is better than our original,

generator/src/template.rs

@@ -62,6 +62,11 @@ impl Template {
                         r#"if {} {{ query_args.push(("{}".to_string(), {}.to_string())); }}"#,
                         nam, prop, nam
                     ));
+                } else if value == "Option<&str>" {
+                    a(&format!(
+                        r#"if let Some(s) = {} {{ if !s.is_empty() {{ query_args.push(("{}".to_string(), s.to_string())); }} }}"#,
+                        nam, prop
+                    ));
                 } else if value == "&str" {
                     a(&format!(
                         r#"if !{}.is_empty() {{ query_args.push(("{}".to_string(), {}.to_string())); }}"#,