basicmachines-co-basic-memory/src/basic_memory/api/routers/utils.py

from typing import Optional, List

from basic_memory.repository import EntityRepository
from basic_memory.repository.search_repository import SearchIndexRow
from basic_memory.schemas.memory import (
    EntitySummary,
    ObservationSummary,
    RelationSummary,
    MemoryMetadata,
    GraphContext,
    ContextResult,
)
from basic_memory.schemas.search import SearchItemType, SearchResult
from basic_memory.services import EntityService
from basic_memory.services.context_service import (
    ContextResultRow,
    ContextResult as ServiceContextResult,
)


async def to_graph_context(
    context_result: ServiceContextResult,
    entity_repository: EntityRepository,
    page: Optional[int] = None,
    page_size: Optional[int] = None,
):
    # Helper function to convert items to summaries
    async def to_summary(item: SearchIndexRow | ContextResultRow):
        match item.type:
            case SearchItemType.ENTITY:
                return EntitySummary(
                    title=item.title,  # pyright: ignore
                    permalink=item.permalink,
                    content=item.content,
                    file_path=item.file_path,
                    created_at=item.created_at,
                )
            case SearchItemType.OBSERVATION:
                return ObservationSummary(
                    title=item.title,  # pyright: ignore
                    file_path=item.file_path,
                    category=item.category,  # pyright: ignore
                    content=item.content,  # pyright: ignore
                    permalink=item.permalink,  # pyright: ignore
                    created_at=item.created_at,
                )
            case SearchItemType.RELATION:
                from_entity = await entity_repository.find_by_id(item.from_id)  # pyright: ignore
                to_entity = await entity_repository.find_by_id(item.to_id) if item.to_id else None
                return RelationSummary(
                    title=item.title,  # pyright: ignore
                    file_path=item.file_path,
                    permalink=item.permalink,  # pyright: ignore
                    relation_type=item.relation_type,  # pyright: ignore
                    from_entity=from_entity.title,  # pyright: ignore
                    to_entity=to_entity.title if to_entity else None,
                    created_at=item.created_at,
                )
            case _:  # pragma: no cover
                raise ValueError(f"Unexpected type: {item.type}")

    # Process the hierarchical results
    hierarchical_results = []
    for context_item in context_result.results:
        # Process primary result
        primary_result = await to_summary(context_item.primary_result)

        # Process observations
        observations = []
        for obs in context_item.observations:
            observations.append(await to_summary(obs))

        # Process related results
        related = []
        for rel in context_item.related_results:
            related.append(await to_summary(rel))

        # Add to hierarchical results
        hierarchical_results.append(
            ContextResult(
                primary_result=primary_result,
                observations=observations,
                related_results=related,
            )
        )

    # Create schema metadata from service metadata
    metadata = MemoryMetadata(
        uri=context_result.metadata.uri,
        types=context_result.metadata.types,
        depth=context_result.metadata.depth,
        timeframe=context_result.metadata.timeframe,
        generated_at=context_result.metadata.generated_at,
        primary_count=context_result.metadata.primary_count,
        related_count=context_result.metadata.related_count,
        total_results=context_result.metadata.primary_count + context_result.metadata.related_count,
        total_relations=context_result.metadata.total_relations,
        total_observations=context_result.metadata.total_observations,
    )

    # Return new GraphContext with just hierarchical results
    return GraphContext(
        results=hierarchical_results,
        metadata=metadata,
        page=page,
        page_size=page_size,
    )


async def to_search_results(entity_service: EntityService, results: List[SearchIndexRow]):
    search_results = []
    for r in results:
        entities = await entity_service.get_entities_by_id([r.entity_id, r.from_id, r.to_id])  # pyright: ignore
        search_results.append(
            SearchResult(
                title=r.title,  # pyright: ignore
                type=r.type,  # pyright: ignore
                permalink=r.permalink,
                score=r.score,  # pyright: ignore
                entity=entities[0].permalink if entities else None,
                content=r.content,
                file_path=r.file_path,
                metadata=r.metadata,
                category=r.category,
                from_entity=entities[0].permalink if entities else None,
                to_entity=entities[1].permalink if len(entities) > 1 else None,
                relation_type=r.relation_type,
            )
        )
    return search_results