from pathlib import Path
from typing import Any, Literal

from banortegpt.storage.azure_storage import AzureStorage
from banortegpt.vector.qdrant import AsyncQdrant
from langchain_core.messages import AIMessageChunk
from qdrant_client import models
from langchain_azure_ai.chat_models import AzureAIChatCompletionsModel
from langchain_azure_ai.embeddings import AzureAIEmbeddingsModel
from pydantic import BaseModel, Field

from . import config, context

parent = Path(__file__).parent
SYSTEM_PROMPT = (parent / "system_prompt.md").read_text()

AZURE_AI_URI = "https://eastus2.api.cognitive.microsoft.com"

class get_information(BaseModel):
    """Buscar informacion relevante de documentos de Banorte sobre un sistema en particular."""

    question: str = Field(..., description="La pregunta del usuario, reescrita para ser comprensible fuera de contexto.")
    system: str = Field(..., description="El sistema del cual se buscara informacion. Puede ser uno de los siguientes: ['ML','SACS','ED','CARATULA', 'SICRED']. 'ML' es 'Master de lineas', 'ED' es 'Expediente Digital'")

class MayaRiesgos:
    system_prompt = SYSTEM_PROMPT
    generation_config = {
        "temperature": config.model_temperature,
    }
    message_limit = config.message_limit
    index = config.vector_index
    limit = config.search_limit
    bucket = config.storage_bucket

    search = AsyncQdrant.from_config(config)
    llm = AzureAIChatCompletionsModel(
        endpoint=f"{AZURE_AI_URI}/openai/deployments/{config.model}",
        credential=config.openai_api_key,
    ).bind_tools([get_information])
    embedder = AzureAIEmbeddingsModel(
        endpoint=f"{AZURE_AI_URI}/openai/deployments/{config.embedding_model}",
        credential=config.openai_api_key,
    )
    storage = AzureStorage.from_config(config)

    def __init__(self) -> None:
        self.tool_map = {"get_information": self.get_information}

    def build_response(self, payloads):
        template = "------ REFERENCIA {index} ----- \n\n{content}"

        filled_templates = [
            template.format(index=idx, content=payload["content"])
            for idx, payload in enumerate(payloads)
        ]

        return "\n".join(filled_templates)

    async def get_information(
        self, question: str, system: Literal["ML", "SACS", "ED", "7.1", "SICRED"]
    ):
        embedding = await self.embedder.aembed_query(question)

        conditions = models.Filter(
            must=[
                models.FieldCondition(
                    key="system",
                    match=models.MatchAny(any=["ALL", system]),
                )
            ]
        )

        payloads = await self.search.semantic_search(
            collection=self.index,
            embedding=embedding,
            limit=self.limit,
            conditions=conditions,
        )

        tool_response = self.build_response(payloads)

        return tool_response, payloads

    async def get_shareable_urls(self, metadatas: list):
        reference_urls = []
        image_urls = []

        for metadata in metadatas:
            if (pagina := metadata.get("pagina")) and (
                archivo := metadata.get("archivo")
            ):
                image_file = f"{pagina}_{archivo}.png"

                image_url = await self.storage.get_file_url(
                    filename=image_file,
                    bucket=self.bucket,
                    minute_duration=20,
                    image=True,
                )
                image_urls.append(image_url)

        return reference_urls, image_urls

    def _generation_config_overwrite(self, overwrites: dict | None) -> dict[str, Any]:
        generation_config_copy = self.generation_config.copy()
        if overwrites:
            for k, v in overwrites.items():
                generation_config_copy[k] = v
        return generation_config_copy

    async def stream(self, history, overwrites: dict | None = None):
        generation_config = self._generation_config_overwrite(overwrites)

        async for chunk in self.llm.astream(input=history, **generation_config):
            assert isinstance(chunk, AIMessageChunk)
            if call := chunk.tool_call_chunks:
                if tool_id := call[0].get("id"):
                    context.tool_id.set(tool_id)
                if name := call[0].get("name"):
                    context.tool_name.set(name)
                if args := call[0].get("args"):
                    context.tool_buffer.set(context.tool_buffer.get() + args)
            else:
                if buffer := chunk.content:
                    assert isinstance(buffer, str)
                    context.buffer.set(context.buffer.get() + buffer)
                    yield buffer

    async def generate(self, history, overwrites: dict | None = None):
        generation_config = self._generation_config_overwrite(overwrites)
        return await self.llm.ainvoke(input=history, **generation_config)