"""Schémas d'entrée/sortie de l'API CRUD et de la matrice."""

import datetime as dt
import uuid

from pydantic import BaseModel, ConfigDict, Field

from app.models import (
    AssignmentSource,
    AssignmentStatus,
    PositionCategory,
    Role,
    TshirtSize,
)
from app.validation import Violation


class ApiModel(BaseModel):
    """Base commune : autorise la construction depuis un objet ORM."""

    model_config = ConfigDict(from_attributes=True)

# --------------------------------------------------------------------------- #
# Volunteer                                                                    #
# --------------------------------------------------------------------------- #
class VolunteerCreate(ApiModel):
    first_name: str
    last_name: str
    email: str | None = None
    phone: str | None = None
    tshirt_size: TshirtSize | None = None
    diet: str | None = None
    comment: str | None = None
    skill_codes: list[str] = Field(default_factory=list)


class VolunteerUpdate(ApiModel):
    first_name: str | None = None
    last_name: str | None = None
    email: str | None = None
    phone: str | None = None
    tshirt_size: TshirtSize | None = None
    diet: str | None = None
    comment: str | None = None
    # None = inchangé ; [] = vider les compétences.
    skill_codes: list[str] | None = None


class VolunteerRead(ApiModel):
    id: uuid.UUID
    edition_id: uuid.UUID
    first_name: str
    last_name: str
    email: str | None
    phone: str | None
    tshirt_size: TshirtSize | None
    diet: str | None
    comment: str | None
    skill_codes: list[str]
    created_at: dt.datetime
    updated_at: dt.datetime


# --------------------------------------------------------------------------- #
# Position                                                                     #
# --------------------------------------------------------------------------- #
class PositionCreate(ApiModel):
    name: str
    location: str | None = None
    category: PositionCategory
    lead_account_id: uuid.UUID | None = None


class PositionUpdate(ApiModel):
    name: str | None = None
    location: str | None = None
    category: PositionCategory | None = None
    lead_account_id: uuid.UUID | None = None


class PositionRead(ApiModel):
    id: uuid.UUID
    edition_id: uuid.UUID
    name: str
    location: str | None
    category: PositionCategory
    lead_account_id: uuid.UUID | None
    created_at: dt.datetime
    updated_at: dt.datetime


# --------------------------------------------------------------------------- #
# Shift                                                                        #
# --------------------------------------------------------------------------- #
class ShiftCreate(ApiModel):
    position_id: uuid.UUID
    starts_at: dt.datetime
    ends_at: dt.datetime
    min_staff: int = Field(default=0, ge=0)
    ideal_staff: int = Field(default=0, ge=0)
    required_skill_codes: list[str] = Field(default_factory=list)


class ShiftUpdate(ApiModel):
    position_id: uuid.UUID | None = None
    starts_at: dt.datetime | None = None
    ends_at: dt.datetime | None = None
    min_staff: int | None = Field(default=None, ge=0)
    ideal_staff: int | None = Field(default=None, ge=0)
    required_skill_codes: list[str] | None = None


class ShiftRead(ApiModel):
    id: uuid.UUID
    edition_id: uuid.UUID
    position_id: uuid.UUID
    starts_at: dt.datetime
    ends_at: dt.datetime
    min_staff: int
    ideal_staff: int
    required_skill_codes: list[str]
    created_at: dt.datetime
    updated_at: dt.datetime


# --------------------------------------------------------------------------- #
# Assignment                                                                   #
# --------------------------------------------------------------------------- #
class AssignmentCreate(ApiModel):
    volunteer_id: uuid.UUID
    shift_id: uuid.UUID
    status: AssignmentStatus = AssignmentStatus.PROPOSED
    source: AssignmentSource = AssignmentSource.MANUAL
    locked: bool = False


class AssignmentUpdate(ApiModel):
    status: AssignmentStatus | None = None
    source: AssignmentSource | None = None
    locked: bool | None = None


class AssignmentRead(ApiModel):
    id: uuid.UUID
    edition_id: uuid.UUID
    volunteer_id: uuid.UUID
    shift_id: uuid.UUID
    status: AssignmentStatus
    source: AssignmentSource
    locked: bool
    created_at: dt.datetime
    updated_at: dt.datetime


class AssignmentWriteResult(ApiModel):
    assignment: AssignmentRead
    warnings: list[Violation] = Field(default_factory=list)


class AssignmentValidateRequest(ApiModel):
    volunteer_id: uuid.UUID
    shift_id: uuid.UUID


class AssignmentValidateResult(ApiModel):
    blocking: bool
    violations: list[Violation] = Field(default_factory=list)


# --------------------------------------------------------------------------- #
# Matrice poste × créneau                                                      #
# --------------------------------------------------------------------------- #
class MatrixShift(ApiModel):
    shift_id: uuid.UUID
    starts_at: dt.datetime
    ends_at: dt.datetime
    min_staff: int
    ideal_staff: int
    confirmed: int
    proposed: int


class MatrixPosition(ApiModel):
    id: uuid.UUID
    name: str
    category: PositionCategory
    location: str | None
    shifts: list[MatrixShift]


class MatrixResponse(ApiModel):
    edition_id: uuid.UUID
    positions: list[MatrixPosition]


# --------------------------------------------------------------------------- #
# Authentification et comptes                                                  #
# --------------------------------------------------------------------------- #
class MagicLinkRequest(ApiModel):
    email: str


class VerifyRequest(ApiModel):
    token: str


class LoginRequest(ApiModel):
    email: str
    password: str


class ChangePasswordRequest(ApiModel):
    current_password: str
    new_password: str


class AccountRead(ApiModel):
    id: uuid.UUID
    edition_id: uuid.UUID
    email: str
    role: Role
    volunteer_id: uuid.UUID | None
    # Mode de connexion : "password" (admins) ou "magic_link".
    auth_method: str
    created_at: dt.datetime
    updated_at: dt.datetime


class TokenResponse(ApiModel):
    access_token: str
    token_type: str
    account: AccountRead


class AccountCreate(ApiModel):
    email: str
    role: Role
    volunteer_id: uuid.UUID | None = None
    # Requis pour un compte COORDINATION, interdit sinon.
    password: str | None = None