"""
TOM (Technisch-Organisatorische Maßnahmen) Pydantic schemas — extracted from compliance/api/schemas.py.

Phase 1 Step 3: the monolithic ``compliance.api.schemas`` module is being
split per domain under ``compliance.schemas``. This module is re-exported
from ``compliance.api.schemas`` for backwards compatibility.
"""

from datetime import datetime, date
from typing import Optional, List, Any, Dict

from pydantic import BaseModel, ConfigDict, Field

from compliance.schemas.common import (
    PaginationMeta, RegulationType, ControlType, ControlDomain,
    ControlStatus, RiskLevel, EvidenceStatus,
)


# ============================================================================
# TOM — Technisch-Organisatorische Massnahmen (Art. 32 DSGVO)
# ============================================================================

# ---- Request bodies (extracted from compliance/api/tom_routes.py) -----------

class TOMStateBody(BaseModel):
    """Request body for POST /tom/state (save with optimistic locking)."""
    tenant_id: Optional[str] = None
    tenantId: Optional[str] = None  # Accept camelCase from frontend
    state: Dict[str, Any]
    version: Optional[int] = None

    def get_tenant_id(self) -> str:
        return self.tenant_id or self.tenantId or "9282a473-5c95-4b3a-bf78-0ecc0ec71d3e"


class TOMMeasureCreate(BaseModel):
    """Request body for POST /tom/measures."""
    control_id: str
    name: str
    description: Optional[str] = None
    category: str
    type: str
    applicability: str = "REQUIRED"
    applicability_reason: Optional[str] = None
    implementation_status: str = "NOT_IMPLEMENTED"
    responsible_person: Optional[str] = None
    responsible_department: Optional[str] = None
    implementation_date: Optional[str] = None
    review_date: Optional[str] = None
    review_frequency: Optional[str] = None
    priority: Optional[str] = None
    complexity: Optional[str] = None
    linked_evidence: Optional[List[Any]] = None
    evidence_gaps: Optional[List[Any]] = None
    related_controls: Optional[Dict[str, Any]] = None
    verified_at: Optional[str] = None
    verified_by: Optional[str] = None
    effectiveness_rating: Optional[str] = None


class TOMMeasureUpdate(BaseModel):
    """Request body for PUT /tom/measures/{id} (all fields optional)."""
    name: Optional[str] = None
    description: Optional[str] = None
    category: Optional[str] = None
    type: Optional[str] = None
    applicability: Optional[str] = None
    applicability_reason: Optional[str] = None
    implementation_status: Optional[str] = None
    responsible_person: Optional[str] = None
    responsible_department: Optional[str] = None
    implementation_date: Optional[str] = None
    review_date: Optional[str] = None
    review_frequency: Optional[str] = None
    priority: Optional[str] = None
    complexity: Optional[str] = None
    linked_evidence: Optional[List[Any]] = None
    evidence_gaps: Optional[List[Any]] = None
    related_controls: Optional[Dict[str, Any]] = None
    verified_at: Optional[str] = None
    verified_by: Optional[str] = None
    effectiveness_rating: Optional[str] = None


class TOMMeasureBulkItem(BaseModel):
    """Single item in a TOMMeasureBulkBody — no verification fields."""
    control_id: str
    name: str
    description: Optional[str] = None
    category: str
    type: str
    applicability: str = "REQUIRED"
    applicability_reason: Optional[str] = None
    implementation_status: str = "NOT_IMPLEMENTED"
    responsible_person: Optional[str] = None
    responsible_department: Optional[str] = None
    implementation_date: Optional[str] = None
    review_date: Optional[str] = None
    review_frequency: Optional[str] = None
    priority: Optional[str] = None
    complexity: Optional[str] = None
    linked_evidence: Optional[List[Any]] = None
    evidence_gaps: Optional[List[Any]] = None
    related_controls: Optional[Dict[str, Any]] = None


class TOMMeasureBulkBody(BaseModel):
    """Request body for POST /tom/measures/bulk."""
    tenant_id: Optional[str] = None
    measures: List["TOMMeasureBulkItem"] = []


# ---- Response models --------------------------------------------------------

class TOMStateResponse(BaseModel):
    tenant_id: str
    state: Dict[str, Any] = {}
    version: int = 0
    last_modified: Optional[datetime] = None
    is_new: bool = False


class TOMMeasureResponse(BaseModel):
    id: str
    tenant_id: str
    control_id: str
    name: str
    description: Optional[str] = None
    category: str
    type: str
    applicability: str = "REQUIRED"
    applicability_reason: Optional[str] = None
    implementation_status: str = "NOT_IMPLEMENTED"
    responsible_person: Optional[str] = None
    responsible_department: Optional[str] = None
    implementation_date: Optional[datetime] = None
    review_date: Optional[datetime] = None
    review_frequency: Optional[str] = None
    priority: Optional[str] = None
    complexity: Optional[str] = None
    linked_evidence: List[Any] = []
    evidence_gaps: List[Any] = []
    related_controls: Dict[str, Any] = {}
    verified_at: Optional[datetime] = None
    verified_by: Optional[str] = None
    effectiveness_rating: Optional[str] = None
    created_by: Optional[str] = None
    created_at: Optional[datetime] = None
    updated_at: Optional[datetime] = None

    model_config = ConfigDict(from_attributes=True)


class TOMStatsResponse(BaseModel):
    total: int = 0
    by_status: Dict[str, int] = {}
    by_category: Dict[str, int] = {}
    overdue_review_count: int = 0
    implemented: int = 0
    partial: int = 0
    not_implemented: int = 0