"""Wallet Engine DTOs — Phase 7.6."""
from __future__ import annotations

from datetime import datetime
from uuid import UUID

from pydantic import BaseModel, ConfigDict, Field

from app.models.types import WalletAccountStatus, WalletLedgerEntryType
from app.schemas.common import ORMBase

_FORBID = ConfigDict(extra="forbid")


class WalletAccountCreate(BaseModel):
    model_config = _FORBID

    program_id: UUID
    member_id: UUID
    account_number: str | None = Field(default=None, max_length=50)
    currency_code: str = Field(default="IRR", max_length=3)
    status: WalletAccountStatus = WalletAccountStatus.OPEN


class WalletAccountUpdate(BaseModel):
    model_config = _FORBID

    status: WalletAccountStatus | None = None


class WalletAccountRead(ORMBase):
    id: UUID
    tenant_id: UUID
    program_id: UUID
    member_id: UUID
    account_number: str
    currency_code: str
    status: WalletAccountStatus
    is_deleted: bool
    created_by: str | None
    updated_by: str | None
    created_at: datetime
    updated_at: datetime


class WalletCreditRequest(BaseModel):
    model_config = _FORBID

    amount: int = Field(gt=0)
    reason: str | None = Field(default=None, max_length=500)
    idempotency_key: str | None = Field(default=None, max_length=100)
    reference_type: str | None = Field(default=None, max_length=50)
    reference_id: str | None = Field(default=None, max_length=100)
    metadata: dict | None = None


class WalletDebitRequest(BaseModel):
    model_config = _FORBID

    amount: int = Field(gt=0)
    reason: str | None = Field(default=None, max_length=500)
    idempotency_key: str | None = Field(default=None, max_length=100)
    reference_type: str | None = Field(default=None, max_length=50)
    reference_id: str | None = Field(default=None, max_length=100)
    metadata: dict | None = None


class WalletAdjustRequest(BaseModel):
    model_config = _FORBID

    amount: int  # signed
    reason: str = Field(max_length=500)
    idempotency_key: str | None = Field(default=None, max_length=100)
    reference_type: str | None = Field(default=None, max_length=50)
    reference_id: str | None = Field(default=None, max_length=100)
    metadata: dict | None = None


class WalletTransferRequest(BaseModel):
    model_config = _FORBID

    target_wallet_id: UUID
    amount: int = Field(gt=0)
    reason: str | None = Field(default=None, max_length=500)
    idempotency_key: str | None = Field(default=None, max_length=100)
    metadata: dict | None = None


class WalletLedgerEntryRead(ORMBase):
    id: UUID
    tenant_id: UUID
    wallet_account_id: UUID
    program_id: UUID
    member_id: UUID
    entry_type: WalletLedgerEntryType
    amount: int
    balance_after: int
    idempotency_key: str | None
    reference_type: str | None
    reference_id: str | None
    reason: str | None
    metadata_json: dict | None
    actor_user_id: str | None
    created_at: datetime


class WalletBalanceRead(BaseModel):
    wallet_account_id: UUID
    member_id: UUID
    program_id: UUID
    status: WalletAccountStatus
    currency_code: str
    balance: int


class WalletLedgerPage(BaseModel):
    items: list[WalletLedgerEntryRead]
    total: int
    offset: int
    limit: int


class WalletTransferResult(BaseModel):
    source_entry: WalletLedgerEntryRead
    target_entry: WalletLedgerEntryRead