from __future__ import annotations

from datetime import datetime
from typing import Any

from pydantic import BaseModel, ConfigDict, Field


class TicketCreateRequest(BaseModel):
    model_config = ConfigDict(extra="forbid")
    record: dict[str, Any]
    idempotency_key: str = Field(min_length=1, max_length=255)


class TicketMutationRequest(BaseModel):
    model_config = ConfigDict(extra="forbid")
    expected_revision: int = Field(ge=1)
    recorded_at: datetime
    change_reason: str = Field(min_length=1, max_length=1_000)
    idempotency_key: str = Field(min_length=1, max_length=255)


class TicketTriageRequest(TicketMutationRequest):
    changes: dict[str, Any]


class TicketAssignmentRequest(TicketMutationRequest):
    assignee: dict[str, Any] | None = None


class TicketResolutionRequest(TicketMutationRequest):
    target_status: str = Field(min_length=1, max_length=40)
    resolution_summary: str | None = Field(default=None, max_length=20_000)


class TicketParticipantsRequest(TicketMutationRequest):
    participants: list[dict[str, Any]] = Field(max_length=100)


class TicketLinkRequest(TicketMutationRequest):
    link: dict[str, Any]


class TicketCommentRequest(BaseModel):
    model_config = ConfigDict(extra="forbid")
    expected_revision: int = Field(ge=1)
    comment_id: str = Field(min_length=1, max_length=255)
    body: str = Field(min_length=1, max_length=20_000)
    visibility: str = Field(default="internal", max_length=40)
    recorded_at: datetime
    idempotency_key: str = Field(min_length=1, max_length=255)


class TicketEscalationRequest(BaseModel):
    model_config = ConfigDict(extra="forbid")
    expected_revision: int = Field(ge=1)
    case_type_key: str = Field(min_length=1, max_length=120)
    occurred_at: datetime
    handoff_note: str | None = Field(default=None, max_length=10_000)
    idempotency_key: str = Field(min_length=1, max_length=255)


class TicketDeleteRequest(BaseModel):
    model_config = ConfigDict(extra="forbid")
    expected_revision: int = Field(ge=1)
    occurred_at: datetime
    reason: str = Field(min_length=1, max_length=1_000)
    idempotency_key: str = Field(min_length=1, max_length=255)


class TicketListResponse(BaseModel):
    tickets: list[dict[str, Any]]
    total: int
    offset: int
    limit: int


class TicketCommentsResponse(BaseModel):
    comments: list[dict[str, Any]]


class TicketHistoryResponse(BaseModel):
    history: list[dict[str, Any]]


class TicketCommentMutationResponse(BaseModel):
    ticket: dict[str, Any]
    comment: dict[str, Any]


class TicketEscalationResponse(BaseModel):
    ticket: dict[str, Any]
    escalation: dict[str, Any]


__all__ = [
    "TicketAssignmentRequest",
    "TicketCommentMutationResponse",
    "TicketCommentRequest",
    "TicketCommentsResponse",
    "TicketCreateRequest",
    "TicketDeleteRequest",
    "TicketEscalationRequest",
    "TicketEscalationResponse",
    "TicketHistoryResponse",
    "TicketLinkRequest",
    "TicketListResponse",
    "TicketParticipantsRequest",
    "TicketResolutionRequest",
    "TicketTriageRequest",
]