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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 inline object schemas in unions
let test_spec = json!({
"openapi": "3.1.0",
"info": {
"title": "Inline Objects Test API",
"version": "1.0.0"
},
"components": {
"schemas": {
"User": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"name": {
"type": "string"
}
},
"required": ["id", "name"]
},
"EventUnion": {
"oneOf": [
{"$ref": "#/components/schemas/User"},
{
"type": "object",
"properties": {
"type": {
"type": "string",
"enum": ["guest"]
},
"sessionId": {
"type": "string"
},
"timestamp": {
"type": "string",
"format": "date-time"
}
},
"required": ["type", "sessionId"]
},
{
"type": "object",
"properties": {
"type": {
"type": "string",
"enum": ["system"]
},
"message": {
"type": "string"
},
"level": {
"type": "string",
"enum": ["info", "warning", "error"]
}
},
"required": ["type", "message", "level"]
}
],
"discriminator": {
"propertyName": "type"
},
"description": "Union with inline object schemas"
},
"FlexibleData": {
"anyOf": [
{"$ref": "#/components/schemas/User"},
{
"type": "object",
"properties": {
"data": {
"type": "string"
},
"format": {
"type": "string",
"enum": ["json", "xml", "text"]
}
},
"required": ["data"]
},
{
"type": "object",
"properties": {
"bytes": {
"type": "string",
"format": "byte"
},
"encoding": {
"type": "string",
"enum": ["base64", "hex"]
}
},
"required": ["bytes", "encoding"]
}
],
"description": "Flexible union with inline objects (anyOf)"
}
}
}
});
println!("Creating schema analyzer for inline objects 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::DiscriminatedUnion {
discriminator_field,
variants,
} => {
let variant_info: Vec<String> = variants
.iter()
.map(|v| {
format!(
"{}='{}' -> {}",
v.rust_name, v.discriminator_value, v.type_name
)
})
.collect();
format!(
"DiscriminatedUnion(discriminator: {}, variants: [{}])",
discriminator_field,
variant_info.join(", ")
)
}
openapi_to_rust::analysis::SchemaType::Union { variants } => {
let variant_info: Vec<String> =
variants.iter().map(|v| v.target.to_string()).collect();
format!("Union(variants: [{}])", variant_info.join(", "))
}
openapi_to_rust::analysis::SchemaType::Object { properties, .. } => {
format!("Object({} properties)", properties.len())
}
other => format!("{other:?}"),
}
);
}
println!("\nDetected patterns:");
println!(
" Tagged enums: {:?}",
analysis.patterns.tagged_enum_schemas
);
println!(
" Untagged enums: {:?}",
analysis.patterns.untagged_enum_schemas
);
println!("\nDependency graph:");
for (schema, deps) in &analysis.dependencies.edges {
if !deps.is_empty() {
println!(" {schema} depends on: {deps:?}");
}
}
println!("\nGenerating code...");
let config = GeneratorConfig {
module_name: "inline_objects_api".to_string(),
..Default::default()
};
let generator = CodeGenerator::new(config);
let generated_code = generator.generate(&mut analysis)?;
println!("\nGenerated code:");
println!("{generated_code}");
Ok(())
}