ATOCore/src/atocore/api/routes.py

"""FastAPI route definitions."""

from pathlib import Path

from fastapi import APIRouter, HTTPException
from pydantic import BaseModel

import atocore.config as _config
from atocore.context.builder import (
    build_context,
    get_last_context_pack,
    _pack_to_dict,
)
from atocore.context.project_state import (
    CATEGORIES,
    get_state,
    invalidate_state,
    set_state,
)
from atocore.ingestion.pipeline import (
    exclusive_ingestion,
    get_ingestion_stats,
    get_source_status,
    ingest_configured_sources,
    ingest_file,
    ingest_folder,
)
from atocore.interactions.service import (
    get_interaction,
    list_interactions,
    record_interaction,
)
from atocore.memory.extractor import (
    MemoryCandidate,
    extract_candidates_from_interaction,
)
from atocore.memory.reinforcement import reinforce_from_interaction
from atocore.memory.service import (
    MEMORY_STATUSES,
    MEMORY_TYPES,
    create_memory,
    get_memories,
    invalidate_memory,
    promote_memory,
    reject_candidate_memory,
    supersede_memory,
    update_memory,
)
from atocore.observability.logger import get_logger
from atocore.ops.backup import (
    create_runtime_backup,
    list_runtime_backups,
    validate_backup,
)
from atocore.projects.registry import (
    build_project_registration_proposal,
    get_project_registry_template,
    list_registered_projects,
    register_project,
    refresh_registered_project,
    update_project,
)
from atocore.retrieval.retriever import retrieve
from atocore.retrieval.vector_store import get_vector_store

router = APIRouter()
log = get_logger("api")


# --- Request/Response models ---


class IngestRequest(BaseModel):
    path: str


class IngestResponse(BaseModel):
    results: list[dict]


class IngestSourcesResponse(BaseModel):
    results: list[dict]


class ProjectRefreshResponse(BaseModel):
    project: str
    aliases: list[str]
    description: str
    purge_deleted: bool
    status: str
    roots_ingested: int
    roots_skipped: int
    roots: list[dict]


class ProjectRegistrationProposalRequest(BaseModel):
    project_id: str
    aliases: list[str] = []
    description: str = ""
    ingest_roots: list[dict]


class ProjectUpdateRequest(BaseModel):
    aliases: list[str] | None = None
    description: str | None = None
    ingest_roots: list[dict] | None = None


class QueryRequest(BaseModel):
    prompt: str
    top_k: int = 10
    filter_tags: list[str] | None = None
    project: str | None = None


class QueryResponse(BaseModel):
    results: list[dict]


class ContextBuildRequest(BaseModel):
    prompt: str
    project: str | None = None
    budget: int | None = None


class ContextBuildResponse(BaseModel):
    formatted_context: str
    full_prompt: str
    chunks_used: int
    total_chars: int
    budget: int
    budget_remaining: int
    duration_ms: int
    chunks: list[dict]


class MemoryCreateRequest(BaseModel):
    memory_type: str
    content: str
    project: str = ""
    confidence: float = 1.0


class MemoryUpdateRequest(BaseModel):
    content: str | None = None
    confidence: float | None = None
    status: str | None = None


class ProjectStateSetRequest(BaseModel):
    project: str
    category: str
    key: str
    value: str
    source: str = ""
    confidence: float = 1.0


class ProjectStateGetRequest(BaseModel):
    project: str
    category: str | None = None


class ProjectStateInvalidateRequest(BaseModel):
    project: str
    category: str
    key: str


# --- Endpoints ---


@router.post("/ingest", response_model=IngestResponse)
def api_ingest(req: IngestRequest) -> IngestResponse:
    """Ingest a markdown file or folder."""
    target = Path(req.path)
    try:
        with exclusive_ingestion():
            if target.is_file():
                results = [ingest_file(target)]
            elif target.is_dir():
                results = ingest_folder(target)
            else:
                raise HTTPException(status_code=404, detail=f"Path not found: {req.path}")
    except HTTPException:
        raise
    except Exception as e:
        log.error("ingest_failed", path=req.path, error=str(e))
        raise HTTPException(status_code=500, detail=f"Ingestion failed: {e}")
    return IngestResponse(results=results)


@router.post("/ingest/sources", response_model=IngestSourcesResponse)
def api_ingest_sources() -> IngestSourcesResponse:
    """Ingest enabled configured source directories."""
    try:
        with exclusive_ingestion():
            results = ingest_configured_sources()
    except Exception as e:
        log.error("ingest_sources_failed", error=str(e))
        raise HTTPException(status_code=500, detail=f"Configured source ingestion failed: {e}")
    return IngestSourcesResponse(results=results)


@router.get("/projects")
def api_projects() -> dict:
    """Return registered projects and their resolved ingest roots."""
    return {
        "projects": list_registered_projects(),
        "registry_path": str(_config.settings.resolved_project_registry_path),
    }


@router.get("/projects/template")
def api_projects_template() -> dict:
    """Return a starter template for project registry entries."""
    return {
        "template": get_project_registry_template(),
        "registry_path": str(_config.settings.resolved_project_registry_path),
        "allowed_sources": ["vault", "drive"],
    }


@router.post("/projects/proposal")
def api_project_registration_proposal(req: ProjectRegistrationProposalRequest) -> dict:
    """Return a normalized project registration proposal without writing it."""
    try:
        return build_project_registration_proposal(
            project_id=req.project_id,
            aliases=req.aliases,
            description=req.description,
            ingest_roots=req.ingest_roots,
        )
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))


@router.post("/projects/register")
def api_project_registration(req: ProjectRegistrationProposalRequest) -> dict:
    """Persist a validated project registration to the registry file."""
    try:
        return register_project(
            project_id=req.project_id,
            aliases=req.aliases,
            description=req.description,
            ingest_roots=req.ingest_roots,
        )
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))


@router.put("/projects/{project_name}")
def api_project_update(project_name: str, req: ProjectUpdateRequest) -> dict:
    """Update an existing project registration."""
    try:
        return update_project(
            project_name=project_name,
            aliases=req.aliases,
            description=req.description,
            ingest_roots=req.ingest_roots,
        )
    except ValueError as e:
        detail = str(e)
        if detail.startswith("Unknown project"):
            raise HTTPException(status_code=404, detail=detail)
        raise HTTPException(status_code=400, detail=detail)


@router.post("/projects/{project_name}/refresh", response_model=ProjectRefreshResponse)
def api_refresh_project(project_name: str, purge_deleted: bool = False) -> ProjectRefreshResponse:
    """Refresh one registered project from its configured ingest roots."""
    try:
        with exclusive_ingestion():
            result = refresh_registered_project(project_name, purge_deleted=purge_deleted)
    except ValueError as e:
        raise HTTPException(status_code=404, detail=str(e))
    except Exception as e:
        log.error("project_refresh_failed", project=project_name, error=str(e))
        raise HTTPException(status_code=500, detail=f"Project refresh failed: {e}")
    return ProjectRefreshResponse(**result)


@router.post("/query", response_model=QueryResponse)
def api_query(req: QueryRequest) -> QueryResponse:
    """Retrieve relevant chunks for a prompt."""
    try:
        chunks = retrieve(
            req.prompt,
            top_k=req.top_k,
            filter_tags=req.filter_tags,
            project_hint=req.project,
        )
    except Exception as e:
        log.error("query_failed", prompt=req.prompt[:100], error=str(e))
        raise HTTPException(status_code=500, detail=f"Query failed: {e}")
    return QueryResponse(
        results=[
            {
                "chunk_id": c.chunk_id,
                "content": c.content,
                "score": c.score,
                "heading_path": c.heading_path,
                "source_file": c.source_file,
                "title": c.title,
            }
            for c in chunks
        ]
    )


@router.post("/context/build", response_model=ContextBuildResponse)
def api_build_context(req: ContextBuildRequest) -> ContextBuildResponse:
    """Build a full context pack for a prompt."""
    try:
        pack = build_context(
            user_prompt=req.prompt,
            project_hint=req.project,
            budget=req.budget,
        )
    except Exception as e:
        log.error("context_build_failed", prompt=req.prompt[:100], error=str(e))
        raise HTTPException(status_code=500, detail=f"Context build failed: {e}")
    pack_dict = _pack_to_dict(pack)
    return ContextBuildResponse(
        formatted_context=pack.formatted_context,
        full_prompt=pack.full_prompt,
        chunks_used=len(pack.chunks_used),
        total_chars=pack.total_chars,
        budget=pack.budget,
        budget_remaining=pack.budget_remaining,
        duration_ms=pack.duration_ms,
        chunks=pack_dict["chunks"],
    )


@router.post("/memory")
def api_create_memory(req: MemoryCreateRequest) -> dict:
    """Create a new memory entry."""
    try:
        mem = create_memory(
            memory_type=req.memory_type,
            content=req.content,
            project=req.project,
            confidence=req.confidence,
        )
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))
    return {"status": "ok", "id": mem.id, "memory_type": mem.memory_type}


@router.get("/memory")
def api_get_memories(
    memory_type: str | None = None,
    project: str | None = None,
    active_only: bool = True,
    min_confidence: float = 0.0,
    limit: int = 50,
    status: str | None = None,
) -> dict:
    """List memories, optionally filtered.

    When ``status`` is given explicitly it overrides ``active_only`` so
    the Phase 9 Commit C review queue can be listed via
    ``GET /memory?status=candidate``.
    """
    try:
        memories = get_memories(
            memory_type=memory_type,
            project=project,
            active_only=active_only,
            min_confidence=min_confidence,
            limit=limit,
            status=status,
        )
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))
    return {
        "memories": [
            {
                "id": m.id,
                "memory_type": m.memory_type,
                "content": m.content,
                "project": m.project,
                "confidence": m.confidence,
                "status": m.status,
                "reference_count": m.reference_count,
                "last_referenced_at": m.last_referenced_at,
                "updated_at": m.updated_at,
            }
            for m in memories
        ],
        "types": MEMORY_TYPES,
        "statuses": MEMORY_STATUSES,
    }


@router.put("/memory/{memory_id}")
def api_update_memory(memory_id: str, req: MemoryUpdateRequest) -> dict:
    """Update an existing memory."""
    try:
        success = update_memory(
            memory_id=memory_id,
            content=req.content,
            confidence=req.confidence,
            status=req.status,
        )
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))
    if not success:
        raise HTTPException(status_code=404, detail="Memory not found")
    return {"status": "updated", "id": memory_id}


@router.delete("/memory/{memory_id}")
def api_invalidate_memory(memory_id: str) -> dict:
    """Invalidate a memory (error correction)."""
    success = invalidate_memory(memory_id)
    if not success:
        raise HTTPException(status_code=404, detail="Memory not found")
    return {"status": "invalidated", "id": memory_id}


@router.post("/memory/{memory_id}/promote")
def api_promote_memory(memory_id: str) -> dict:
    """Promote a candidate memory to active (Phase 9 Commit C)."""
    try:
        success = promote_memory(memory_id)
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))
    if not success:
        raise HTTPException(
            status_code=404,
            detail=f"Memory not found or not a candidate: {memory_id}",
        )
    return {"status": "promoted", "id": memory_id}


@router.post("/memory/{memory_id}/reject")
def api_reject_candidate_memory(memory_id: str) -> dict:
    """Reject a candidate memory (Phase 9 Commit C review queue)."""
    success = reject_candidate_memory(memory_id)
    if not success:
        raise HTTPException(
            status_code=404,
            detail=f"Memory not found or not a candidate: {memory_id}",
        )
    return {"status": "rejected", "id": memory_id}


@router.post("/project/state")
def api_set_project_state(req: ProjectStateSetRequest) -> dict:
    """Set or update a trusted project state entry."""
    try:
        entry = set_state(
            project_name=req.project,
            category=req.category,
            key=req.key,
            value=req.value,
            source=req.source,
            confidence=req.confidence,
        )
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))
    except Exception as e:
        log.error("set_state_failed", error=str(e))
        raise HTTPException(status_code=500, detail=f"Failed to set state: {e}")
    return {"status": "ok", "id": entry.id, "category": entry.category, "key": entry.key}


@router.get("/project/state/{project_name}")
def api_get_project_state(project_name: str, category: str | None = None) -> dict:
    """Get trusted project state entries."""
    entries = get_state(project_name, category=category)
    return {
        "project": project_name,
        "entries": [
            {
                "id": e.id,
                "category": e.category,
                "key": e.key,
                "value": e.value,
                "source": e.source,
                "confidence": e.confidence,
                "status": e.status,
                "updated_at": e.updated_at,
            }
            for e in entries
        ],
        "categories": CATEGORIES,
    }


@router.delete("/project/state")
def api_invalidate_project_state(req: ProjectStateInvalidateRequest) -> dict:
    """Invalidate (supersede) a project state entry."""
    success = invalidate_state(req.project, req.category, req.key)
    if not success:
        raise HTTPException(status_code=404, detail="State entry not found or already invalidated")
    return {"status": "invalidated", "project": req.project, "category": req.category, "key": req.key}


class InteractionRecordRequest(BaseModel):
    prompt: str
    response: str = ""
    response_summary: str = ""
    project: str = ""
    client: str = ""
    session_id: str = ""
    memories_used: list[str] = []
    chunks_used: list[str] = []
    context_pack: dict | None = None
    reinforce: bool = True


@router.post("/interactions")
def api_record_interaction(req: InteractionRecordRequest) -> dict:
    """Capture one interaction (prompt + response + what was used).

    This is the foundation of the AtoCore reflection loop. It records
    what the system fed to an LLM and what came back. If ``reinforce``
    is true (default) and there is response content, the Phase 9
    Commit B reinforcement pass runs automatically, bumping the
    confidence of any active memory echoed in the response. Nothing is
    ever promoted into trusted state automatically.
    """
    try:
        interaction = record_interaction(
            prompt=req.prompt,
            response=req.response,
            response_summary=req.response_summary,
            project=req.project,
            client=req.client,
            session_id=req.session_id,
            memories_used=req.memories_used,
            chunks_used=req.chunks_used,
            context_pack=req.context_pack,
            reinforce=req.reinforce,
        )
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))
    return {
        "status": "recorded",
        "id": interaction.id,
        "created_at": interaction.created_at,
    }


@router.post("/interactions/{interaction_id}/reinforce")
def api_reinforce_interaction(interaction_id: str) -> dict:
    """Run the reinforcement pass on an already-captured interaction.

    Useful for backfilling reinforcement over historical interactions,
    or for retrying after a transient failure in the automatic pass
    that runs inside ``POST /interactions``.
    """
    interaction = get_interaction(interaction_id)
    if interaction is None:
        raise HTTPException(status_code=404, detail=f"Interaction not found: {interaction_id}")
    results = reinforce_from_interaction(interaction)
    return {
        "interaction_id": interaction_id,
        "reinforced_count": len(results),
        "reinforced": [
            {
                "memory_id": r.memory_id,
                "memory_type": r.memory_type,
                "old_confidence": round(r.old_confidence, 4),
                "new_confidence": round(r.new_confidence, 4),
            }
            for r in results
        ],
    }


class InteractionExtractRequest(BaseModel):
    persist: bool = False


@router.post("/interactions/{interaction_id}/extract")
def api_extract_from_interaction(
    interaction_id: str,
    req: InteractionExtractRequest | None = None,
) -> dict:
    """Extract candidate memories from a captured interaction.

    Phase 9 Commit C. The extractor is rule-based and deliberately
    conservative — it only surfaces candidates that matched an explicit
    structural cue (decision heading, preference sentence, etc.). By
    default the candidates are returned *without* being persisted so a
    caller can preview them before committing to a review queue. Pass
    ``persist: true`` to immediately create candidate memories for
    each extraction result.
    """
    interaction = get_interaction(interaction_id)
    if interaction is None:
        raise HTTPException(status_code=404, detail=f"Interaction not found: {interaction_id}")
    payload = req or InteractionExtractRequest()
    candidates: list[MemoryCandidate] = extract_candidates_from_interaction(interaction)

    persisted_ids: list[str] = []
    if payload.persist:
        for candidate in candidates:
            try:
                mem = create_memory(
                    memory_type=candidate.memory_type,
                    content=candidate.content,
                    project=candidate.project,
                    confidence=candidate.confidence,
                    status="candidate",
                )
                persisted_ids.append(mem.id)
            except ValueError as e:
                log.error(
                    "extract_persist_failed",
                    interaction_id=interaction_id,
                    rule=candidate.rule,
                    error=str(e),
                )

    return {
        "interaction_id": interaction_id,
        "candidate_count": len(candidates),
        "persisted": payload.persist,
        "persisted_ids": persisted_ids,
        "candidates": [
            {
                "memory_type": c.memory_type,
                "content": c.content,
                "project": c.project,
                "confidence": c.confidence,
                "rule": c.rule,
                "source_span": c.source_span,
            }
            for c in candidates
        ],
    }


@router.get("/interactions")
def api_list_interactions(
    project: str | None = None,
    session_id: str | None = None,
    client: str | None = None,
    since: str | None = None,
    limit: int = 50,
) -> dict:
    """List captured interactions, optionally filtered by project, session,
    client, or creation time. Hard-capped at 500 entries per call."""
    interactions = list_interactions(
        project=project,
        session_id=session_id,
        client=client,
        since=since,
        limit=limit,
    )
    return {
        "count": len(interactions),
        "interactions": [
            {
                "id": i.id,
                "prompt": i.prompt,
                "response_summary": i.response_summary,
                "response_chars": len(i.response),
                "project": i.project,
                "client": i.client,
                "session_id": i.session_id,
                "memories_used": i.memories_used,
                "chunks_used": i.chunks_used,
                "created_at": i.created_at,
            }
            for i in interactions
        ],
    }


@router.get("/interactions/{interaction_id}")
def api_get_interaction(interaction_id: str) -> dict:
    """Fetch a single interaction with the full response and context pack."""
    interaction = get_interaction(interaction_id)
    if interaction is None:
        raise HTTPException(status_code=404, detail=f"Interaction not found: {interaction_id}")
    return {
        "id": interaction.id,
        "prompt": interaction.prompt,
        "response": interaction.response,
        "response_summary": interaction.response_summary,
        "project": interaction.project,
        "client": interaction.client,
        "session_id": interaction.session_id,
        "memories_used": interaction.memories_used,
        "chunks_used": interaction.chunks_used,
        "context_pack": interaction.context_pack,
        "created_at": interaction.created_at,
    }


class BackupCreateRequest(BaseModel):
    include_chroma: bool = False


@router.post("/admin/backup")
def api_create_backup(req: BackupCreateRequest | None = None) -> dict:
    """Create a runtime backup snapshot.

    When ``include_chroma`` is true the call holds the ingestion lock so a
    safe cold copy of the vector store can be taken without racing against
    refresh or ingest endpoints.
    """
    payload = req or BackupCreateRequest()
    try:
        if payload.include_chroma:
            with exclusive_ingestion():
                metadata = create_runtime_backup(include_chroma=True)
        else:
            metadata = create_runtime_backup(include_chroma=False)
    except Exception as e:
        log.error("admin_backup_failed", error=str(e))
        raise HTTPException(status_code=500, detail=f"Backup failed: {e}")
    return metadata


@router.get("/admin/backup")
def api_list_backups() -> dict:
    """List all runtime backups under the configured backup directory."""
    return {
        "backup_dir": str(_config.settings.resolved_backup_dir),
        "backups": list_runtime_backups(),
    }


@router.get("/admin/backup/{stamp}/validate")
def api_validate_backup(stamp: str) -> dict:
    """Validate that a previously created backup is structurally usable."""
    result = validate_backup(stamp)
    if not result.get("exists", False):
        raise HTTPException(status_code=404, detail=f"Backup not found: {stamp}")
    return result


@router.get("/health")
def api_health() -> dict:
    """Health check."""
    store = get_vector_store()
    source_status = get_source_status()
    return {
        "status": "ok",
        "version": "0.1.0",
        "vectors_count": store.count,
        "env": _config.settings.env,
        "machine_paths": {
            "db_path": str(_config.settings.db_path),
            "chroma_path": str(_config.settings.chroma_path),
            "log_dir": str(_config.settings.resolved_log_dir),
            "backup_dir": str(_config.settings.resolved_backup_dir),
            "run_dir": str(_config.settings.resolved_run_dir),
        },
        "sources_ready": all(
            (not source["enabled"]) or (source["exists"] and source["is_dir"])
            for source in source_status
        ),
        "source_status": source_status,
    }


@router.get("/sources")
def api_sources() -> dict:
    """Return configured ingestion source directories and readiness."""
    return {
        "sources": get_source_status(),
        "vault_enabled": _config.settings.source_vault_enabled,
        "drive_enabled": _config.settings.source_drive_enabled,
    }


@router.get("/stats")
def api_stats() -> dict:
    """Ingestion statistics."""
    return get_ingestion_stats()


@router.get("/debug/context")
def api_debug_context() -> dict:
    """Inspect the last assembled context pack."""
    pack = get_last_context_pack()
    if pack is None:
        return {"message": "No context pack built yet."}
    return _pack_to_dict(pack)