use serde::{Deserialize, Serialize};

/// Frontend-facing URLs for developer tool services.
///
/// Provided as a context signal in `AppShell` so that developer pages
/// can read the configured URLs without threading props through layouts.
/// An empty string indicates the service is not configured.
#[derive(Debug, Clone, Default, PartialEq, Serialize, Deserialize)]
pub struct ServiceUrlsContext {
    /// LangGraph agent builder URL (empty if not configured)
    pub langgraph_url: String,
    /// LangFlow visual workflow builder URL (empty if not configured)
    pub langflow_url: String,
    /// Langfuse observability URL (empty if not configured)
    pub langfuse_url: String,
}

#[cfg(test)]
mod tests {
    use super::*;
    use pretty_assertions::assert_eq;

    #[test]
    fn default_urls_are_empty() {
        let ctx = ServiceUrlsContext::default();
        assert_eq!(ctx.langgraph_url, "");
        assert_eq!(ctx.langflow_url, "");
        assert_eq!(ctx.langfuse_url, "");
    }

    #[test]
    fn serde_round_trip() {
        let ctx = ServiceUrlsContext {
            langgraph_url: "http://localhost:8123".into(),
            langflow_url: "http://localhost:7860".into(),
            langfuse_url: "http://localhost:3000".into(),
        };
        let json = serde_json::to_string(&ctx).expect("serialize ServiceUrlsContext");
        let back: ServiceUrlsContext =
            serde_json::from_str(&json).expect("deserialize ServiceUrlsContext");
        assert_eq!(ctx, back);
    }
}