from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session
from typing import List
import uuid
from datetime import datetime

from ..db import get_db
from ..models import Assistant, Voice, Workflow
from ..schemas import (
    AssistantCreate, AssistantUpdate, AssistantOut,
    VoiceOut,
    WorkflowCreate, WorkflowUpdate, WorkflowOut
)

router = APIRouter()


# ============ Voices ============
@router.get("/voices", response_model=List[VoiceOut])
def list_voices(db: Session = Depends(get_db)):
    """获取声音库列表"""
    voices = db.query(Voice).all()
    return voices


# ============ Assistants ============
@router.get("/assistants")
def list_assistants(
    page: int = 1,
    limit: int = 50,
    db: Session = Depends(get_db)
):
    """获取助手列表"""
    query = db.query(Assistant)
    total = query.count()
    assistants = query.order_by(Assistant.created_at.desc()) \
        .offset((page-1)*limit).limit(limit).all()
    return {"total": total, "page": page, "limit": limit, "list": assistants}


@router.get("/assistants/{id}", response_model=AssistantOut)
def get_assistant(id: str, db: Session = Depends(get_db)):
    """获取单个助手详情"""
    assistant = db.query(Assistant).filter(Assistant.id == id).first()
    if not assistant:
        raise HTTPException(status_code=404, detail="Assistant not found")
    return assistant


@router.post("/assistants", response_model=AssistantOut)
def create_assistant(data: AssistantCreate, db: Session = Depends(get_db)):
    """创建新助手"""
    assistant = Assistant(
        id=str(uuid.uuid4())[:8],
        user_id=1,  # 默认用户，后续添加认证
        name=data.name,
        opener=data.opener,
        prompt=data.prompt,
        knowledge_base_id=data.knowledgeBaseId,
        language=data.language,
        voice=data.voice,
        speed=data.speed,
        hotwords=data.hotwords,
        tools=data.tools,
        interruption_sensitivity=data.interruptionSensitivity,
        config_mode=data.configMode,
        api_url=data.apiUrl,
        api_key=data.apiKey,
    )
    db.add(assistant)
    db.commit()
    db.refresh(assistant)
    return assistant


@router.put("/assistants/{id}")
def update_assistant(id: str, data: AssistantUpdate, db: Session = Depends(get_db)):
    """更新助手"""
    assistant = db.query(Assistant).filter(Assistant.id == id).first()
    if not assistant:
        raise HTTPException(status_code=404, detail="Assistant not found")
    
    update_data = data.model_dump(exclude_unset=True)
    for field, value in update_data.items():
        setattr(assistant, field, value)
    
    assistant.updated_at = datetime.utcnow()
    db.commit()
    db.refresh(assistant)
    return assistant


@router.delete("/assistants/{id}")
def delete_assistant(id: str, db: Session = Depends(get_db)):
    """删除助手"""
    assistant = db.query(Assistant).filter(Assistant.id == id).first()
    if not assistant:
        raise HTTPException(status_code=404, detail="Assistant not found")
    db.delete(assistant)
    db.commit()
    return {"message": "Deleted successfully"}


# ============ Workflows ============
@router.get("/workflows", response_model=List[WorkflowOut])
def list_workflows(db: Session = Depends(get_db)):
    """获取工作流列表"""
    workflows = db.query(Workflow).all()
    return workflows


@router.post("/workflows", response_model=WorkflowOut)
def create_workflow(data: WorkflowCreate, db: Session = Depends(get_db)):
    """创建工作流"""
    workflow = Workflow(
        id=str(uuid.uuid4())[:8],
        user_id=1,
        name=data.name,
        node_count=data.nodeCount,
        created_at=data.createdAt or datetime.utcnow().isoformat(),
        updated_at=data.updatedAt or "",
        global_prompt=data.globalPrompt,
        nodes=data.nodes,
        edges=data.edges,
    )
    db.add(workflow)
    db.commit()
    db.refresh(workflow)
    return workflow


@router.put("/workflows/{id}", response_model=WorkflowOut)
def update_workflow(id: str, data: WorkflowUpdate, db: Session = Depends(get_db)):
    """更新工作流"""
    workflow = db.query(Workflow).filter(Workflow.id == id).first()
    if not workflow:
        raise HTTPException(status_code=404, detail="Workflow not found")
    
    update_data = data.model_dump(exclude_unset=True)
    for field, value in update_data.items():
        setattr(workflow, field, value)
    
    workflow.updated_at = datetime.utcnow().isoformat()
    db.commit()
    db.refresh(workflow)
    return workflow


@router.delete("/workflows/{id}")
def delete_workflow(id: str, db: Session = Depends(get_db)):
    """删除工作流"""
    workflow = db.query(Workflow).filter(Workflow.id == id).first()
    if not workflow:
        raise HTTPException(status_code=404, detail="Workflow not found")
    db.delete(workflow)
    db.commit()
    return {"message": "Deleted successfully"}