use uuid::Uuid;

use crate::error::Result;
use crate::model::*;
use crate::storage::DynStorageBackend;

pub async fn create_collection(
    storage: &DynStorageBackend,
    name: &str,
    kind: CollectionKind,
    description: Option<&str>,
    filter_query: Option<&str>,
) -> Result<Collection> {
    storage
        .create_collection(name, kind, description, filter_query)
        .await
}

pub async fn add_member(
    storage: &DynStorageBackend,
    collection_id: Uuid,
    media_id: MediaId,
    position: i32,
) -> Result<()> {
    storage
        .add_to_collection(collection_id, media_id, position)
        .await?;
    crate::audit::record_action(
        storage,
        Some(media_id),
        AuditAction::AddedToCollection,
        Some(format!("collection_id={collection_id}")),
    )
    .await
}

pub async fn remove_member(
    storage: &DynStorageBackend,
    collection_id: Uuid,
    media_id: MediaId,
) -> Result<()> {
    storage
        .remove_from_collection(collection_id, media_id)
        .await?;
    crate::audit::record_action(
        storage,
        Some(media_id),
        AuditAction::RemovedFromCollection,
        Some(format!("collection_id={collection_id}")),
    )
    .await
}

pub async fn get_members(
    storage: &DynStorageBackend,
    collection_id: Uuid,
) -> Result<Vec<MediaItem>> {
    let collection = storage.get_collection(collection_id).await?;

    match collection.kind {
        CollectionKind::Virtual => {
            // Virtual collections evaluate their filter_query dynamically
            if let Some(ref query_str) = collection.filter_query {
                let query = crate::search::parse_search_query(query_str)?;
                let request = crate::search::SearchRequest {
                    query,
                    sort: crate::search::SortOrder::DateDesc,
                    pagination: Pagination::new(0, 10000, None),
                };
                let results = storage.search(&request).await?;
                Ok(results.items)
            } else {
                Ok(Vec::new())
            }
        }
        CollectionKind::Manual => storage.get_collection_members(collection_id).await,
    }
}