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use crate::core::config::ResolvedCrateConfig;
use crate::e2e::escape::escape_java;
use heck::ToUpperCamelCase;
use super::values::{emit_java_object_array, is_numeric_type_hint, json_to_java, json_to_java_typed};
/// Build setup lines (e.g. handle creation) and the argument list for the function call.
///
/// Returns `(setup_lines, args_string)`.
pub(super) struct JavaArgsContext<'a> {
pub(super) class_name: &'a str,
pub(super) options_type: Option<&'a str>,
pub(super) fixture: &'a crate::e2e::fixture::Fixture,
pub(super) adapter_request_type: Option<&'a str>,
pub(super) owner_handle_is_receiver: bool,
pub(super) config: &'a ResolvedCrateConfig,
pub(super) type_defs: &'a [crate::core::ir::TypeDef],
pub(super) teardown_block: &'a mut String,
}
pub(super) fn build_args_and_setup(
input: &serde_json::Value,
args: &[crate::e2e::config::ArgMapping],
context: JavaArgsContext<'_>,
) -> (Vec<String>, String) {
let JavaArgsContext {
class_name,
options_type,
fixture,
adapter_request_type,
owner_handle_is_receiver,
config,
type_defs,
teardown_block,
} = context;
let fixture_id = &fixture.id;
if args.is_empty() {
return (Vec::new(), String::new());
}
let mut setup_lines: Vec<String> = Vec::new();
let mut parts: Vec<String> = Vec::new();
for arg in args {
if arg.arg_type == "mock_url" {
if fixture.has_host_root_route() {
setup_lines.push(format!(
"String {} = System.getProperty(\"mockServer.{fixture_id}\", System.getProperty(\"mockServerUrl\", System.getenv(\"MOCK_SERVER_URL\")) + \"/fixtures/{fixture_id}\");",
arg.name,
));
} else {
setup_lines.push(format!(
"String {} = System.getProperty(\"mockServerUrl\", System.getenv(\"MOCK_SERVER_URL\")) + \"/fixtures/{fixture_id}\";",
arg.name,
));
}
if let Some(req_type) = adapter_request_type {
let req_var = format!("{}Req", arg.name);
setup_lines.push(format!("var {req_var} = new {req_type}({});", arg.name));
parts.push(req_var);
} else {
parts.push(arg.name.clone());
}
continue;
}
if arg.arg_type == "mock_url_list" {
// List<String> of URLs: each element is either a bare path (`/seed1`) -
// prefixed with the per-fixture mock-server URL at runtime - or an absolute
// URL kept as-is. Mirrors `mock_url` resolution: `MOCK_SERVER_<FIXTURE_ID>`
// env var first, then `MOCK_SERVER_URL/fixtures/<id>`. Emitted as a typed
// `java.util.List<String>` so it matches the binding signature.
let env_key = format!("MOCK_SERVER_{}", fixture_id.to_uppercase());
let field = arg.field.strip_prefix("input.").unwrap_or(&arg.field);
let val = input.get(field).unwrap_or(&serde_json::Value::Null);
let paths: Vec<String> = if let Some(arr) = val.as_array() {
arr.iter()
.filter_map(|v| v.as_str().map(|s| format!("\"{}\"", escape_java(s))))
.collect()
} else {
Vec::new()
};
let paths_literal = paths.join(", ");
let name = &arg.name;
// Per-fixture mock-server URL resolution order:
// 1. System.getProperty("mockServer.<fixture_id>") - populated by
// MockServerListener from the mock-server's MOCK_SERVERS=
// announcement (preferred for host-root-route fixtures).
// 2. System.getenv("MOCK_SERVER_<FIXTURE_ID>") - explicit env override
// for CI / external harnesses.
// 3. System.getenv("MOCK_SERVER_URL") + "/fixtures/<fixture_id>" -
// fallback to the shared-route URL for fixtures without host-root
// routes.
// Previous code skipped (1), so any fixture with per-fixture host-root
// routes hit /fixtures/<id>/<path> on the shared host - which mock-server
// doesn't serve - and returned 404 for every batch URL.
setup_lines.push(format!(
"String {name}Base = System.getProperty(\"mockServer.{fixture_id}\", System.getenv().getOrDefault(\"{env_key}\", (System.getProperty(\"mockServerUrl\") != null ? System.getProperty(\"mockServerUrl\") : (System.getenv(\"MOCK_SERVER_URL\") != null ? System.getenv(\"MOCK_SERVER_URL\") : \"http://localhost:8000\")) + \"/fixtures/{fixture_id}\"));"
));
setup_lines.push(format!(
"java.util.List<String> {name} = java.util.Arrays.stream(new String[]{{{paths_literal}}}).map(p -> p.startsWith(\"http\") ? p : {name}Base + p).collect(java.util.stream.Collectors.toList());"
));
// Wrap in adapter request type if present (e.g., BatchedStreamItemsRequest).
if let Some(req_type) = adapter_request_type {
let req_var = format!("{}Req", arg.name);
setup_lines.push(format!("var {req_var} = new {req_type}({});", arg.name));
parts.push(req_var);
} else {
parts.push(name.clone());
}
continue;
}
if arg.arg_type == "handle" {
// Generate a createEngine (or equivalent) call and pass the variable.
let constructor_name = format!("create{}", arg.name.to_upper_camel_case());
let field = arg.field.strip_prefix("input.").unwrap_or(&arg.field);
let config_value = input.get(field).unwrap_or(&serde_json::Value::Null);
if config_value.is_null()
|| config_value.is_object() && config_value.as_object().is_some_and(|o| o.is_empty())
{
setup_lines.push(format!("var {} = {class_name}.{constructor_name}(null);", arg.name,));
} else {
let json_str = serde_json::to_string(config_value).unwrap_or_default();
let name = &arg.name;
if let Some(config_type) = resolve_handle_config_type(arg, options_type, type_defs) {
setup_lines.push(format!(
"var {name}Config = MAPPER.readValue(\"{}\", {config_type}.class);",
escape_java(&json_str),
));
setup_lines.push(format!(
"var {} = {class_name}.{constructor_name}({name}Config);",
arg.name,
name = name,
));
} else {
setup_lines.push(format!("var {} = {class_name}.{constructor_name}(null);", arg.name,));
}
}
// For streaming owner_type adapters the handle is the instance-method
// receiver, not a positional argument - emit its construction but omit
// it from the call's argument list.
if owner_handle_is_receiver {
continue;
}
parts.push(arg.name.clone());
continue;
}
if arg.arg_type == "test_backend" {
if let Some(trait_name) = &arg.trait_name {
if let Some(trait_bridge) = config.trait_bridges.iter().find(|tb| tb.trait_name == *trait_name) {
// Filter to only methods that appear in the Java trait-bridge interface.
// Async methods (extract_bytes, extract_file) are handled by the FFI bridge internally.
let mut methods: Vec<&crate::core::ir::MethodDef> = type_defs
.iter()
.find(|t| t.name == *trait_name)
.map(|t| {
t.methods
.iter()
.filter(|m| {
// Skip methods in the ffi_skip_methods list
if trait_bridge.ffi_skip_methods.contains(&m.name) {
return false;
}
// Skip only known non-trait methods not in Java trait-bridge interfaces
match m.name.as_str() {
"description" | "author" => return false,
_ => {}
}
// As of the trait method extraction fix, methods returning excluded types
// are now kept in the interface with type substitution.
// Methods like extract_bytes/extract_file and backend_type are now included.
true
})
.collect()
})
.unwrap_or_default();
// Include super-trait methods so the stub can implement them.
if let Some(super_trait) = &trait_bridge.super_trait {
if let Some(super_type) = type_defs.iter().find(|t| &t.rust_path == super_trait) {
for method in &super_type.methods {
if !methods.iter().any(|m| m.name == method.name)
&& !trait_bridge.ffi_skip_methods.contains(&method.name)
&& !matches!(method.name.as_str(), "description" | "author")
{
methods.push(method);
}
}
}
}
let excluded_named =
crate::e2e::codegen::recipe::trait_bridge_excluded_type_names(config, type_defs, &methods);
// Do NOT filter out methods that return excluded types. As of the trait method extraction
// fix, trait methods with excluded type signatures are now kept in the interface with type
// substitution (excluded types become String). The trait-bridge interface properly handles
// these via emit_test_backend_with_context, which uses excluded_named to substitute types.
// Call java::stubs::emit_test_backend_with_context so stubs handle excluded types correctly.
let emission = super::stubs::emit_test_backend_with_context(
trait_bridge,
&methods,
fixture,
&config.java_package(),
&excluded_named,
class_name,
);
setup_lines.push(emission.setup_block);
parts.push(emission.arg_expr);
teardown_block.push_str(&emission.teardown_block);
continue;
}
}
let emission = crate::e2e::codegen::TestBackendEmission::unimplemented("java");
setup_lines.push(format!("// {}", emission.arg_expr));
parts.push("null".to_string());
continue;
}
let resolved = super::super::resolve_field(input, &arg.field);
let val = if resolved.is_null() { None } else { Some(resolved) };
match val {
None | Some(serde_json::Value::Null) if arg.optional => {
// Optional arg with no fixture value: emit positional null/default so the call
// has the right arity. For json_object optional args, build an empty default object
// so we get the right type rather than a raw null.
if arg.arg_type == "json_object" {
if let Some(opts_type) = options_type {
parts.push(format!("{opts_type}.builder().build()"));
} else {
parts.push("null".to_string());
}
} else {
parts.push("null".to_string());
}
}
None | Some(serde_json::Value::Null) => {
// Required arg with no fixture value: pass a language-appropriate default.
let default_val = match arg.arg_type.as_str() {
"string" | "file_path" => "\"\"".to_string(),
"int" | "integer" => "0".to_string(),
"float" | "number" => "0.0d".to_string(),
"bool" | "boolean" => "false".to_string(),
_ => "null".to_string(),
};
parts.push(default_val);
}
Some(v) => {
if arg.arg_type == "json_object" {
// Array json_object args: emit inline Java list expression.
if v.is_array() {
if let Some(elem_type) = &arg.element_type {
// For complex types, deserialize each array element via JsonUtil.
if !is_numeric_type_hint(elem_type) {
parts.push(emit_java_object_array(v, elem_type));
continue;
}
}
// Otherwise use element_type to emit the correct numeric literal suffix (f vs d).
let elem_type = arg.element_type.as_deref();
parts.push(json_to_java_typed(v, elem_type));
continue;
}
// Object json_object args with options_type: use pre-deserialized variable.
if options_type.is_some() {
parts.push(arg.name.clone());
continue;
}
parts.push(json_to_java(v));
continue;
}
// bytes args carry a relative file path (e.g. "docx/fake.docx") that the
// e2e harness resolves against test_documents/. Read the file at runtime,
// not the raw path string's UTF-8 bytes.
if arg.arg_type == "bytes" {
let val = json_to_java(v);
parts.push(format!(
"java.nio.file.Files.readAllBytes(java.nio.file.Path.of({val}))"
));
continue;
}
// file_path args must be wrapped in java.nio.file.Path.of().
if arg.arg_type == "file_path" {
let val = json_to_java(v);
parts.push(format!("java.nio.file.Path.of({val})"));
continue;
}
parts.push(json_to_java(v));
}
}
}
(setup_lines, parts.join(", "))
}
fn resolve_handle_config_type(
arg: &crate::e2e::config::ArgMapping,
options_type: Option<&str>,
type_defs: &[crate::core::ir::TypeDef],
) -> Option<String> {
if arg.arg_type != "handle" {
return None;
}
options_type.map(str::to_string).or_else(|| {
let candidate = format!("{}Config", arg.name.to_upper_camel_case());
type_defs.iter().any(|ty| ty.name == candidate).then_some(candidate)
})
}