use crate::schema::EntityKind;

/// Declaration of a text field for full-text search indexing.
///
/// Each `TextFieldDef` maps a metadata key (e.g., "title", "description") to
/// a Tantivy indexing mode. Declared in the schema via `SchemaBuilder::text_field`.
#[derive(Debug, Clone)]
pub struct TextFieldDef {
    /// The metadata key to index (e.g., "title", "description", "tags").
    pub key: String,
    /// Whether this field is tokenized (full-text) or raw (keyword/exact-match).
    pub field_type: TextFieldType,
}

/// The Tantivy indexing mode for a text field.
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum TextFieldType {
    /// Full tokenization with Tantivy's default tokenizer.
    /// Good for: title, description, body text.
    Text,
    /// Raw storage, no tokenization. Only exact-match queries work.
    /// Good for: category, format, `creator_id`, language tags.
    Keyword,
}

/// Definition of an embedding vector slot for ANN search.
///
/// Declared in the schema to tell tidalDB which embedding dimensions
/// to expect for a given entity kind. The database retrieves and ranks
/// over vectors -- it does not generate them.
#[derive(Debug, Clone)]
pub struct EmbeddingSlotDef {
    /// Slot name (e.g., "default", "thumbnail").
    pub name: String,
    /// Which entity kind this slot is attached to.
    pub entity_kind: EntityKind,
    /// Dimensionality of the embedding vector.
    pub dimensions: usize,
}