"""Code generated by Speakeasy (https://speakeasy.com). DO NOT EDIT."""

from __future__ import annotations
from .apierrortype import APIErrorType
from .chatstreamchoice import ChatStreamChoice, ChatStreamChoiceTypedDict
from .chatusage import ChatUsage, ChatUsageTypedDict
from .openroutermetadata import OpenRouterMetadata, OpenRouterMetadataTypedDict
from openrouter.types import (
    BaseModel,
    Nullable,
    OptionalNullable,
    UNSET,
    UNSET_SENTINEL,
)
from pydantic import model_serializer
from typing import List, Literal, Optional
from typing_extensions import NotRequired, TypedDict


class ChatStreamChunkMetadataTypedDict(TypedDict):
    r"""Structured error metadata"""

    error_type: APIErrorType
    r"""Canonical OpenRouter error type, stable across all API formats"""
    provider_code: NotRequired[str]
    r"""Upstream provider-specific error code, when available"""


class ChatStreamChunkMetadata(BaseModel):
    r"""Structured error metadata"""

    error_type: APIErrorType
    r"""Canonical OpenRouter error type, stable across all API formats"""

    provider_code: Optional[str] = None
    r"""Upstream provider-specific error code, when available"""

    @model_serializer(mode="wrap")
    def serialize_model(self, handler):
        optional_fields = set(["provider_code"])
        serialized = handler(self)
        m = {}

        for n, f in type(self).model_fields.items():
            k = f.alias or n
            val = serialized.get(k, serialized.get(n))

            if val != UNSET_SENTINEL:
                if val is not None or k not in optional_fields:
                    m[k] = val

        return m


class ChatStreamChunkErrorTypedDict(TypedDict):
    r"""Error information"""

    code: int
    r"""Error code"""
    message: str
    r"""Error message"""
    metadata: NotRequired[ChatStreamChunkMetadataTypedDict]
    r"""Structured error metadata"""


class ChatStreamChunkError(BaseModel):
    r"""Error information"""

    code: int
    r"""Error code"""

    message: str
    r"""Error message"""

    metadata: Optional[ChatStreamChunkMetadata] = None
    r"""Structured error metadata"""

    @model_serializer(mode="wrap")
    def serialize_model(self, handler):
        optional_fields = set(["metadata"])
        serialized = handler(self)
        m = {}

        for n, f in type(self).model_fields.items():
            k = f.alias or n
            val = serialized.get(k, serialized.get(n))

            if val != UNSET_SENTINEL:
                if val is not None or k not in optional_fields:
                    m[k] = val

        return m


ChatStreamChunkObject = Literal["chat.completion.chunk",]


class ChatStreamChunkTypedDict(TypedDict):
    r"""Streaming chat completion chunk"""

    choices: List[ChatStreamChoiceTypedDict]
    r"""List of streaming chunk choices"""
    created: int
    r"""Unix timestamp of creation"""
    id: str
    r"""Unique chunk identifier"""
    model: str
    r"""Model used for completion"""
    object: ChatStreamChunkObject
    error: NotRequired[ChatStreamChunkErrorTypedDict]
    r"""Error information"""
    openrouter_metadata: NotRequired[OpenRouterMetadataTypedDict]
    service_tier: NotRequired[Nullable[str]]
    r"""The service tier used by the upstream provider for this request"""
    system_fingerprint: NotRequired[str]
    r"""System fingerprint"""
    usage: NotRequired[ChatUsageTypedDict]
    r"""Token usage statistics"""


class ChatStreamChunk(BaseModel):
    r"""Streaming chat completion chunk"""

    choices: List[ChatStreamChoice]
    r"""List of streaming chunk choices"""

    created: int
    r"""Unix timestamp of creation"""

    id: str
    r"""Unique chunk identifier"""

    model: str
    r"""Model used for completion"""

    object: ChatStreamChunkObject

    error: Optional[ChatStreamChunkError] = None
    r"""Error information"""

    openrouter_metadata: Optional[OpenRouterMetadata] = None

    service_tier: OptionalNullable[str] = UNSET
    r"""The service tier used by the upstream provider for this request"""

    system_fingerprint: Optional[str] = None
    r"""System fingerprint"""

    usage: Optional[ChatUsage] = None
    r"""Token usage statistics"""

    @model_serializer(mode="wrap")
    def serialize_model(self, handler):
        optional_fields = set(
            [
                "error",
                "openrouter_metadata",
                "service_tier",
                "system_fingerprint",
                "usage",
            ]
        )
        nullable_fields = set(["service_tier"])
        serialized = handler(self)
        m = {}

        for n, f in type(self).model_fields.items():
            k = f.alias or n
            val = serialized.get(k, serialized.get(n))
            is_nullable_and_explicitly_set = (
                k in nullable_fields
                and (self.__pydantic_fields_set__.intersection({n}))  # pylint: disable=no-member
            )

            if val != UNSET_SENTINEL:
                if (
                    val is not None
                    or k not in optional_fields
                    or is_nullable_and_explicitly_set
                ):
                    m[k] = val

        return m