ggen-domain 5.1.3

//! Discover ontology packs in marketplace
//!
//! This module handles:
//! - Searching marketplace for ontology packs
//! - Filtering by domain, language, features
//! - Retrieving pack details
//! - Listing installed packs
//! - Pack recommendations

use ggen_utils::error::Result;

/// Input for pack discovery
#[derive(Debug, Clone)]
pub struct DiscoverInput {
    /// Search query (e.g., "schema.org", "foaf")
    pub query: Option<String>,

    /// Filter by ontology namespace
    pub namespace: Option<String>,

    /// Filter by domain (ecommerce, healthcare, etc.)
    pub domain: Option<String>,

    /// Filter by supported language
    pub language: Option<String>,

    /// Sort order (downloads, rating, updated)
    pub sort_by: SortOrder,

    /// Limit results
    pub limit: usize,
}

/// Sort order for results
#[derive(Debug, Clone, Default, serde::Serialize)]
pub enum SortOrder {
    /// Most downloaded
    #[default]
    Downloads,
    /// Highest rating
    Rating,
    /// Most recently updated
    Updated,
}

/// Output from discovery
#[derive(Debug, Clone, serde::Serialize)]
pub struct DiscoverOutput {
    /// Ontology packs found
    pub packs: Vec<OntologyPackSummary>,

    /// Total results
    pub total: usize,

    /// Query used
    pub query: Option<String>,
}

/// Summary of an ontology pack
#[derive(Debug, Clone, serde::Serialize)]
pub struct OntologyPackSummary {
    /// Pack ID
    pub pack_id: String,

    /// Pack name
    pub name: String,

    /// Pack version
    pub version: String,

    /// Description
    pub description: String,

    /// Ontologies included
    pub ontologies: Vec<String>,

    /// Languages supported
    pub languages_supported: Vec<String>,

    /// Download count
    pub downloads: usize,

    /// Rating (0-5)
    pub rating: Option<f32>,
}

/// Execute pack discovery
///
/// # Example
///
/// ```rust,no_run
/// use ggen_domain::ontology::discover::{execute_discover, DiscoverInput};
///
/// #[tokio::main]
/// async fn main() -> Result<(), Box<dyn std::error::Error>> {
///     let input = DiscoverInput {
///         query: Some("schema".to_string()),
///         namespace: None,
///         domain: Some("ecommerce".to_string()),
///         language: Some("typescript".to_string()),
///         sort_by: Default::default(),
///         limit: 10,
///     };
///
///     let output = execute_discover(&input).await?;
///     println!("Found {} ontology packs", output.total);
///     Ok(())
/// }
/// ```
pub async fn execute_discover(input: &DiscoverInput) -> Result<DiscoverOutput> {
    // Note: Marketplace search to be implemented
    // For now, return empty results

    Ok(DiscoverOutput {
        packs: vec![],
        total: 0,
        query: input.query.clone(),
    })
}

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

    #[tokio::test]
    async fn test_discover_returns_empty() {
        let input = DiscoverInput {
            query: Some("nonexistent".to_string()),
            namespace: None,
            domain: None,
            language: None,
            sort_by: SortOrder::Downloads,
            limit: 10,
        };

        let output = execute_discover(&input).await.unwrap();
        assert_eq!(output.total, 0);
    }
}