use std::sync::Arc;
use super::Model;
use super::openai::OpenAi;
use super::provider::HostedWebSearch;
use super::provider::ProviderBuildConfig;
use super::provider::ProviderDefinition;
use super::provider::uses_default_endpoint;
use crate::Error;
use crate::Result;
use crate::protocol::ToolDiscoveryMode;
pub(super) static MANIFEST: std::sync::LazyLock<super::provider::ProviderMetadata> =
std::sync::LazyLock::new(|| crate::config::embedded(include_str!("openrouter_provider.toml")));
pub(super) fn provider() -> ProviderDefinition {
ProviderDefinition::from_metadata(
"openrouter",
&MANIFEST,
MANIFEST.api_key_auth(),
None,
build_provider,
)
.with_image_input()
.with_image_generation()
.with_credentialless_endpoints()
}
fn build_provider(config: ProviderBuildConfig) -> Result<Arc<dyn Model>> {
let tool_discovery = provider().tool_discovery(&config.model, config.base_url.as_deref());
let base_url = config
.base_url
.ok_or_else(|| Error::Config("OpenRouter requires a base URL".into()))?;
let api_key = config.credential.into_optional_api_key("openrouter")?;
let native_images = api_key.is_some()
&& uses_default_endpoint(Some(MANIFEST.base_url.as_str()), Some(&base_url));
let provider = OpenAi::with_client(
api_key,
base_url,
config.model,
config.http,
config.transport,
)?
.with_service_tier(config.service_tier)
.with_image_api(native_images.then_some(&super::image_generation::IMAGE_APIS["openrouter"]));
let provider = match tool_discovery {
ToolDiscoveryMode::Native => provider.with_openrouter_tool_search(),
ToolDiscoveryMode::Rebuild => provider.with_tool_discovery(ToolDiscoveryMode::Rebuild),
};
let provider = match config.reasoning_effort {
Some(effort) => provider.with_reasoning_effort(effort)?,
None => provider,
};
let provider = match config.web_search {
HostedWebSearch::Off => provider,
HostedWebSearch::Cached => {
return Err(Error::Config(
"OpenRouter does not support cached web search".into(),
));
}
HostedWebSearch::Live => {
provider.with_hosted_tool(serde_json::json!({"type": "openrouter:web_search"}))
}
};
Ok(Arc::new(provider))
}
#[cfg(test)]
mod tests {
use super::*;
use crate::backend::model::provider::ProviderCredential;
#[test]
fn advertised_web_search_modes_build() {
let definition = provider();
for web_search in definition.web_search().iter().copied() {
let model = definition
.build(ProviderBuildConfig {
credential: ProviderCredential::ApiKey("test-key".into()),
model: "test-model".into(),
base_url: Some(MANIFEST.base_url.as_str().into()),
reasoning_effort: None,
service_tier: None,
web_search,
http: reqwest::Client::new(),
transport: crate::backend::model::ModelTransportSettings::default(),
})
.expect("advertised web search mode builds");
assert!(model.supports_image_generation());
}
}
}