import os
import shutil
from tempfile import NamedTemporaryFile

from fastapi import APIRouter, File, UploadFile, Form

from langchain.embeddings import HuggingFaceEmbeddings

from pilot.configs.config import Config
from pilot.configs.model_config import LLM_MODEL_CONFIG, KNOWLEDGE_UPLOAD_ROOT_PATH

from pilot.openapi.api_v1.api_view_model import Result
from pilot.embedding_engine.knowledge_embedding import KnowledgeEmbedding

from pilot.server.knowledge.service import KnowledgeService
from pilot.server.knowledge.request.request import (
    KnowledgeQueryRequest,
    KnowledgeQueryResponse,
    KnowledgeDocumentRequest,
    DocumentSyncRequest,
    ChunkQueryRequest,
    DocumentQueryRequest,
)

from pilot.server.knowledge.request.request import KnowledgeSpaceRequest

CFG = Config()
router = APIRouter()


embeddings = HuggingFaceEmbeddings(model_name=LLM_MODEL_CONFIG[CFG.EMBEDDING_MODEL])

knowledge_space_service = KnowledgeService()


@router.post("/knowledge/space/add")
def space_add(request: KnowledgeSpaceRequest):
    print(f"/space/add params: {request}")
    try:
        knowledge_space_service.create_knowledge_space(request)
        return Result.succ([])
    except Exception as e:
        return Result.faild(code="E000X", msg=f"space add error {e}")


@router.post("/knowledge/space/list")
def space_list(request: KnowledgeSpaceRequest):
    print(f"/space/list params:")
    try:
        return Result.succ(knowledge_space_service.get_knowledge_space(request))
    except Exception as e:
        return Result.faild(code="E000X", msg=f"space list error {e}")


@router.post("/knowledge/{space_name}/document/add")
def document_add(space_name: str, request: KnowledgeDocumentRequest):
    print(f"/document/add params: {space_name}, {request}")
    try:
        return Result.succ(knowledge_space_service.create_knowledge_document(
            space=space_name, request=request
        ))
        # return Result.succ([])
    except Exception as e:
        return Result.faild(code="E000X", msg=f"document add error {e}")


@router.post("/knowledge/{space_name}/document/list")
def document_list(space_name: str, query_request: DocumentQueryRequest):
    print(f"/document/list params: {space_name}, {query_request}")
    try:
        return Result.succ(
            knowledge_space_service.get_knowledge_documents(space_name, query_request)
        )
    except Exception as e:
        return Result.faild(code="E000X", msg=f"document list error {e}")


@router.post("/knowledge/{space_name}/document/upload")
async def document_upload(
    space_name: str,
    doc_name: str = Form(...),
    doc_type: str = Form(...),
    doc_file: UploadFile = File(...),
):
    print(f"/document/upload params: {space_name}")
    try:
        if doc_file:
            if not os.path.exists(os.path.join(KNOWLEDGE_UPLOAD_ROOT_PATH, space_name)):
                os.makedirs(os.path.join(KNOWLEDGE_UPLOAD_ROOT_PATH, space_name))
            with NamedTemporaryFile(
                dir=os.path.join(KNOWLEDGE_UPLOAD_ROOT_PATH, space_name), delete=False
            ) as tmp:
                tmp.write(await doc_file.read())
                tmp_path = tmp.name
                shutil.move(
                    tmp_path,
                    os.path.join(
                        KNOWLEDGE_UPLOAD_ROOT_PATH, space_name, doc_file.filename
                    ),
                )
                request = KnowledgeDocumentRequest()
                request.doc_name = doc_name
                request.doc_type = doc_type
                request.content = (
                    os.path.join(
                        KNOWLEDGE_UPLOAD_ROOT_PATH, space_name, doc_file.filename
                    ),
                )
                return Result.succ(knowledge_space_service.create_knowledge_document(
                    space=space_name, request=request
                ))
                # return Result.succ([])
        return Result.faild(code="E000X", msg=f"doc_file is None")
    except Exception as e:
        return Result.faild(code="E000X", msg=f"document add error {e}")


@router.post("/knowledge/{space_name}/document/sync")
def document_sync(space_name: str, request: DocumentSyncRequest):
    print(f"Received params: {space_name}, {request}")
    try:
        knowledge_space_service.sync_knowledge_document(
            space_name=space_name, doc_ids=request.doc_ids
        )
        return Result.succ([])
    except Exception as e:
        return Result.faild(code="E000X", msg=f"document sync error {e}")


@router.post("/knowledge/{space_name}/chunk/list")
def document_list(space_name: str, query_request: ChunkQueryRequest):
    print(f"/document/list params: {space_name}, {query_request}")
    try:
        return Result.succ(knowledge_space_service.get_document_chunks(query_request))
    except Exception as e:
        return Result.faild(code="E000X", msg=f"document chunk list error {e}")


@router.post("/knowledge/{vector_name}/query")
def similar_query(space_name: str, query_request: KnowledgeQueryRequest):
    print(f"Received params: {space_name}, {query_request}")
    client = KnowledgeEmbedding(
        model_name=embeddings, vector_store_config={"vector_store_name": space_name}
    )
    docs = client.similar_search(query_request.query, query_request.top_k)
    res = [
        KnowledgeQueryResponse(text=d.page_content, source=d.metadata["source"])
        for d in docs
    ]
    return {"response": res}