from __future__ import annotations

from typing import Any, Literal

from pydantic import BaseModel, ConfigDict, Field

from govoplan_core.privacy.schemas import PrivacyRetentionPolicyItem, PrivacyRetentionPolicyPatchItem


class PolicySourceStepItem(BaseModel):
    scope_type: str
    scope_id: str | None = None
    path: str
    label: str
    applied_fields: list[str] = Field(default_factory=list)
    policy: dict[str, Any] = Field(default_factory=dict)


class PrivacyRetentionPolicyScopeRequest(BaseModel):
    model_config = ConfigDict(extra="forbid")

    policy: PrivacyRetentionPolicyPatchItem = Field(default_factory=PrivacyRetentionPolicyPatchItem)
    change_request_id: str | None = None


class PrivacyRetentionPolicyScopeResponse(BaseModel):
    scope_type: Literal["system", "tenant", "user", "group", "campaign"]
    scope_id: str | None = None
    policy: dict[str, Any]
    effective_policy: PrivacyRetentionPolicyItem
    parent_policy: PrivacyRetentionPolicyItem | None = None
    effective_policy_sources: list[PolicySourceStepItem] = Field(default_factory=list)
    parent_policy_sources: list[PolicySourceStepItem] = Field(default_factory=list)


class PolicyDecisionItem(BaseModel):
    allowed: bool
    reason: str | None = None
    source_path: list[PolicySourceStepItem] = Field(default_factory=list)
    requirements: list[str] = Field(default_factory=list)
    details: dict[str, Any] = Field(default_factory=dict)


class PrivacyRetentionPolicyExplainResponse(BaseModel):
    scope_type: Literal["system", "tenant", "user", "group", "campaign"]
    scope_id: str | None = None
    decision: PolicyDecisionItem
    effective_policy: PrivacyRetentionPolicyItem
    parent_policy: PrivacyRetentionPolicyItem | None = None
    effective_policy_sources: list[PolicySourceStepItem] = Field(default_factory=list)
    parent_policy_sources: list[PolicySourceStepItem] = Field(default_factory=list)
    blocked_fields: list[str] = Field(default_factory=list)


class PrivacyRetentionPolicySimulationResponse(BaseModel):
    scope_type: Literal["system", "tenant", "user", "group", "campaign"]
    scope_id: str | None = None
    simulation: dict[str, Any]


class RetentionRunRequest(BaseModel):
    model_config = ConfigDict(extra="forbid")

    dry_run: bool = True


class RetentionRunResponse(BaseModel):
    result: dict[str, Any]