use anyhow::Result;
use uuid::Uuid;

/// Map upload, storage, and rotation management.
///
/// Handles custom map files (.map) for Rust servers. Maps are stored
/// in object storage with metadata in the database. Supports rotation
/// strategies where different maps are used on successive wipes.
pub struct MapManager {
    // TODO: Add fields:
    // - db: sqlx::PgPool
    // - storage_base_path: String (or S3 client for cloud storage)
}

impl MapManager {
    /// Upload a new map file to storage and register it in the database.
    pub async fn upload_map(
        &self,
        _license_id: Uuid,
        _display_name: &str,
        _filename: &str,
        _data: &[u8],
    ) -> Result<Uuid> {
        // TODO: Compute checksum of map data
        // TODO: Write file to storage (local volume or S3)
        // TODO: Insert map_entry record in DB
        // TODO: Return the new map ID
        todo!()
    }

    /// Delete a map from storage and the database.
    pub async fn delete_map(&self, _map_id: Uuid) -> Result<()> {
        // TODO: Load map_entry from DB
        // TODO: Delete file from storage
        // TODO: Delete DB record
        // TODO: Update any wipe profiles referencing this map
        todo!()
    }

    /// Get the current map rotation for a license (ordered list of map IDs).
    pub async fn get_rotation(&self, _license_id: Uuid) -> Result<Vec<Uuid>> {
        // TODO: Query map rotation config from DB
        // TODO: Return ordered list of map IDs in rotation
        todo!()
    }

    /// Advance the rotation to the next map in sequence.
    /// Returns the map ID that should be used for the next wipe.
    pub async fn advance_rotation(&self, _license_id: Uuid) -> Result<Uuid> {
        // TODO: Get current rotation position from DB
        // TODO: Advance to next map (wrap around to first)
        // TODO: Update rotation position in DB
        // TODO: Return the next map ID
        todo!()
    }

    /// Generate a time-limited signed URL for downloading a map file.
    /// Used by the companion agent or panel adapter to fetch map files.
    pub async fn generate_signed_url(&self, _map_id: Uuid) -> Result<String> {
        // TODO: Load map_entry from DB
        // TODO: Generate signed URL with expiration (e.g., 15 minutes)
        // TODO: Return the URL
        todo!()
    }
}
