from pydantic import BaseModel, EmailStr, Field
from typing import Optional
from motor.motor_asyncio import AsyncIOMotorDatabase
from utils.email_utils import send_preorder_notification_to_owner

class PreOrderRequest(BaseModel):
    name: str = Field(..., max_length=100)
    phone: str = Field(..., max_length=20)
    gmail: EmailStr = Field(..., description="Gmail address")
    message: str | None = None

import datetime

async def create_preorder(db: AsyncIOMotorDatabase, data: PreOrderRequest):
    preorder = data.dict()
    preorder["created_at"] = datetime.datetime.utcnow().isoformat()
    result = await db["preorders"].insert_one(preorder)
    # Send notification email to owner
    await send_preorder_notification_to_owner(
        name=preorder["name"],
        phone=preorder["phone"],
        gmail=preorder["gmail"],
        message=preorder.get("message", "")
    )
    return str(result.inserted_id)

async def get_all_preorders(db: AsyncIOMotorDatabase):
    preorders = []
    cursor = db["preorders"].find({})
    async for doc in cursor:
        doc["_id"] = str(doc["_id"])
        if "created_at" not in doc:
            doc["created_at"] = ""
        preorders.append(doc)
    return preorders

async def get_preorder_count(db: AsyncIOMotorDatabase):
    return await db["preorders"].count_documents({})

async def delete_preorder(db: AsyncIOMotorDatabase, preorder_id: str):
    from bson import ObjectId
    result = await db["preorders"].delete_one({"_id": ObjectId(preorder_id)})
    return result.deleted_count

async def update_preorder_status(db: AsyncIOMotorDatabase, preorder_id: str, status: str):
    from bson import ObjectId
    # Only allow valid statuses
    if status not in ["pending", "contacted", "completed"]:
        raise ValueError("Invalid status")
    result = await db["preorders"].update_one(
        {"_id": ObjectId(preorder_id)},
        {"$set": {"status": status}}
    )
    return result.modified_count