from __future__ import annotations

from .shared import *

from ...services.sstc.entity_lookup import _ensure_charter, _ensure_project, _ensure_release
from ...services.sstc.governance import _assert_release_transition_allowed, _require_manager
from ...services.sstc.signal_core import _as_dict, _parse_node_id, _parse_project_id

router = APIRouter(tags=["sstc"])

@router.patch("/projects/{project_id}/releases/{release_node_id}/status")
async def patch_release_status(
    project_id: str,
    release_node_id: str,
    body: ReleaseStatusPatchRequest,
    permission_user: User = Depends(require_project_member_or_manager),
    db: AsyncSession = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    _ = permission_user
    _require_manager(current_user)
    pid = _parse_project_id(project_id)
    rid = _parse_node_id(release_node_id, "release_node_id")
    tenant_id = int(current_user.tenant_id)
    await _ensure_project(SSTCService(db, tenant_id=tenant_id), pid)
    release_node = await _ensure_release(
        db, tenant_id=tenant_id, project_id=pid, release_node_id=rid
    )
    await _assert_release_transition_allowed(
        db,
        tenant_id=tenant_id,
        project_id=pid,
        release_node=release_node,
        target_status=body.status,
    )
    before = {"status": release_node.status}
    release_node.status = body.status
    content = _as_dict(release_node.content)
    content["status_note"] = body.note
    content["last_status_changed_at"] = now_cn_aware().isoformat()
    release_node.content = content
    await log_operation(
        db,
        tenant_id=tenant_id,
        user_id=int(current_user.id),
        project_id=pid,
        entity_type="release",
        entity_id=str(rid),
        action="status_change",
        before_data=before,
        after_data={"status": body.status, "note": body.note},
    )
    await db.commit()
    return success_response({"id": str(release_node.id), "status": release_node.status})

@router.post("/projects/{project_id}/releases/{release_node_id}/verification/generate")
async def generate_release_verification(
    project_id: str,
    release_node_id: str,
    permission_user: User = Depends(require_project_member_or_manager),
    db: AsyncSession = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    _ = permission_user
    _require_manager(current_user)
    pid = _parse_project_id(project_id)
    rid = _parse_node_id(release_node_id, "release_node_id")
    tenant_id = int(current_user.tenant_id)
    await _ensure_project(SSTCService(db, tenant_id=tenant_id), pid)
    release_node = await _ensure_release(
        db, tenant_id=tenant_id, project_id=pid, release_node_id=rid
    )

    content = _as_dict(release_node.content)
    charter_id = int(content.get("charter_id") or 0)
    charter = await _ensure_charter(
        db,
        tenant_id=tenant_id,
        project_id=pid,
        charter_id=charter_id,
    )
    charter_content = _as_dict(charter.content)
    derived_artifacts = charter_content.get("derived_artifacts")
    if not isinstance(derived_artifacts, dict):
        derived_artifacts = {}

    verification_metrics = derived_artifacts.get("verification_metrics")
    if not isinstance(verification_metrics, list):
        verification_metrics = []
    if not verification_metrics:
        fallback_metrics = charter_content.get("success_metrics") or charter_content.get("core_metrics") or []
        verification_metrics = [
            {"name": str(metric).strip(), "expected": str(metric).strip()}
            for metric in fallback_metrics
            if str(metric or "").strip()
        ]
    if not verification_metrics:
        raise HTTPException(status_code=409, detail="charter verification metrics 缺失，请先完善宪章 KPI")

    items = [
        {
            "id": f"check-{i+1}",
            "title": str(metric.get("name") or metric.get("title") or "").strip(),
            "expected": str(metric.get("expected") or metric.get("name") or metric.get("title") or "").strip(),
            "status": "pending",
            "required": True,
            "source": "charter_verification_metric",
            "verified_by": None,
            "verified_at": None,
            "note": None,
        }
        for i, metric in enumerate(verification_metrics)
        if isinstance(metric, dict) and str(metric.get("name") or metric.get("title") or "").strip()
    ]
    if not items:
        raise HTTPException(status_code=409, detail="charter verification metrics 缺失，请先完善宪章 KPI")
    content["verification_items"] = items
    content["verification_progress"] = {"done": 0, "total": len(items)}
    content["verification_done"] = False
    release_node.content = content
    await db.commit()
    return success_response({"release_id": str(release_node.id), "verification_items": items})