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use openapi_to_rust::{CodeGenerator, GeneratorConfig, SchemaAnalyzer};
use serde_json::json;
fn main() -> Result<(), Box<dyn std::error::Error>> {
// Create an OpenAPI spec with recursive schemas
let test_spec = json!({
"openapi": "3.1.0",
"info": {
"title": "Recursive Schemas Test API",
"version": "1.0.0"
},
"components": {
"schemas": {
"TreeNode": {
"type": "object",
"properties": {
"value": {
"type": "string"
},
"children": {
"type": "array",
"items": {
"$ref": "#/components/schemas/TreeNode"
}
},
"parent": {
"$ref": "#/components/schemas/TreeNode"
}
},
"required": ["value"],
"description": "A tree node with children and parent references"
},
"LinkedListNode": {
"type": "object",
"properties": {
"data": {
"type": "integer"
},
"next": {
"$ref": "#/components/schemas/LinkedListNode"
}
},
"required": ["data"],
"description": "A linked list node with next pointer"
},
"Person": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"age": {
"type": "integer"
},
"friends": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Person"
}
},
"spouse": {
"$ref": "#/components/schemas/Person"
}
},
"required": ["name", "age"],
"description": "A person with friends and spouse (mutual references)"
},
"Category": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"parent": {
"$ref": "#/components/schemas/Category"
},
"subcategories": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Category"
}
}
},
"required": ["name"],
"description": "A category with parent and child categories"
},
"GraphNode": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"edges": {
"type": "array",
"items": {
"$ref": "#/components/schemas/GraphEdge"
}
}
},
"required": ["id"]
},
"GraphEdge": {
"type": "object",
"properties": {
"from": {
"$ref": "#/components/schemas/GraphNode"
},
"to": {
"$ref": "#/components/schemas/GraphNode"
},
"weight": {
"type": "number"
}
},
"required": ["from", "to"],
"description": "Mutual recursion between GraphNode and GraphEdge"
}
}
}
});
println!("Creating schema analyzer for recursive schemas test...");
let mut analyzer = SchemaAnalyzer::new(test_spec)?;
println!("Analyzing schemas...");
let mut analysis = analyzer.analyze()?;
println!("Found {} schemas:", analysis.schemas.len());
for (name, schema) in &analysis.schemas {
println!(
" - {}: {:?}",
name,
match &schema.schema_type {
openapi_to_rust::analysis::SchemaType::Object { properties, .. } => {
let prop_info: Vec<String> = properties
.iter()
.map(|(prop_name, prop_info)| match &prop_info.schema_type {
openapi_to_rust::analysis::SchemaType::Reference { target } => {
format!("{prop_name}: {target}")
}
openapi_to_rust::analysis::SchemaType::Array { item_type } => {
match item_type.as_ref() {
openapi_to_rust::analysis::SchemaType::Reference { target } => {
format!("{prop_name}: Vec<{target}>")
}
_ => format!("{prop_name}: {item_type:?}"),
}
}
_ => format!("{}: {:?}", prop_name, prop_info.schema_type),
})
.collect();
format!("Object({})", prop_info.join(", "))
}
other => format!("{other:?}"),
}
);
}
println!("\nDependency graph:");
for (schema, deps) in &analysis.dependencies.edges {
if !deps.is_empty() {
println!(" {schema} depends on: {deps:?}");
}
}
println!(
"\nRecursive schemas detected: {:?}",
analysis.dependencies.recursive_schemas
);
println!("\nGenerating code...");
let config = GeneratorConfig {
module_name: "recursive_api".to_string(),
..Default::default()
};
let generator = CodeGenerator::new(config);
let generated_code = generator.generate(&mut analysis)?;
println!("\nGenerated code:");
println!("{generated_code}");
Ok(())
}