mirror of
https://github.com/henry4682/linebot_finance.git
synced 2026-05-16 04:41:52 +00:00
434 lines
14 KiB
Python
434 lines
14 KiB
Python
import os
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import re
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import asyncio
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import threading
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import nest_asyncio
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nest_asyncio.apply()
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import captcha_state
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from invoice_fetcher import main as fetch_main
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from dotenv import load_dotenv
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from fastapi import FastAPI, Request, HTTPException
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from linebot.v3 import WebhookHandler
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from linebot.v3.messaging import (
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Configuration,
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ApiClient,
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MessagingApi,
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ReplyMessageRequest,
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TextMessage,
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)
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from linebot.v3.webhooks import MessageEvent, TextMessageContent, FollowEvent
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from linebot.v3.exceptions import InvalidSignatureError
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from sqlalchemy import create_engine, Column, Integer, String, Numeric, Date, DateTime, BigInteger, text
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from sqlalchemy.orm import declarative_base, sessionmaker
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from datetime import datetime, date
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load_dotenv()
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app = FastAPI()
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# LINE 設定
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configuration = Configuration(access_token=os.getenv("LINE_CHANNEL_ACCESS_TOKEN"))
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handler = WebhookHandler(os.getenv("LINE_CHANNEL_SECRET"))
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# DB 設定
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DATABASE_URL = os.getenv("DATABASE_URL")
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engine = create_engine(DATABASE_URL)
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SessionLocal = sessionmaker(bind=engine)
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Base = declarative_base()
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# Models
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class User(Base):
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__tablename__ = "users"
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id = Column(BigInteger, primary_key=True)
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name = Column(String)
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email = Column(String, unique=True)
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class LineUser(Base):
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__tablename__ = "line_users"
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id = Column(BigInteger, primary_key=True)
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line_user_id = Column(String, unique=True)
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user_id = Column(BigInteger)
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created_at = Column(DateTime, default=datetime.now)
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class Category(Base):
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__tablename__ = "categories"
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id = Column(BigInteger, primary_key=True)
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user_id = Column(BigInteger)
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parent_id = Column(BigInteger, nullable=True)
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name = Column(String)
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color = Column(String, default='#3B82F6')
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icon = Column(String, nullable=True)
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class CategoryRule(Base):
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__tablename__ = "category_rules"
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id = Column(BigInteger, primary_key=True)
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user_id = Column(BigInteger)
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category_id = Column(BigInteger)
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keyword = Column(String)
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class Expense(Base):
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__tablename__ = "expenses"
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id = Column(BigInteger, primary_key=True)
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user_id = Column(BigInteger)
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category_id = Column(BigInteger, nullable=True)
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amount = Column(Numeric(10, 2))
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note = Column(String, nullable=True)
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invoice_number = Column(String, nullable=True)
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seller_name = Column(String, nullable=True)
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item_name = Column(String, nullable=True)
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date = Column(Date)
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created_at = Column(DateTime, default=datetime.now)
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updated_at = Column(DateTime, default=datetime.now)
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# 記帳模板
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EXPENSE_TEMPLATE = (
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"請填寫以下記帳資料後傳回：\n\n"
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"品項: \n"
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"類別: \n"
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"金額: \n"
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"店家: \n"
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"備註: "
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)
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def get_or_create_user(db, line_user_id: str) -> int:
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line_user = db.query(LineUser).filter(
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LineUser.line_user_id == line_user_id
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).first()
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if line_user:
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return line_user.user_id
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new_user = User(
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name="LINE用戶",
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email=f"{line_user_id}@line.user"
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)
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db.add(new_user)
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db.flush()
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default_categories = [
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("餐飲", "#F97316", "🍽"),
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("交通", "#3B82F6", "🚗"),
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("購物", "#8B5CF6", "🛍"),
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("娛樂", "#EC4899", "🎮"),
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("醫療", "#10B981", "🏥"),
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("其他", "#6B7280", "📦"),
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]
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parent_ids = {}
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for name, color, icon in default_categories:
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cat = Category(user_id=new_user.id, name=name, color=color, icon=icon)
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db.add(cat)
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db.flush()
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parent_ids[name] = cat.id
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default_rules = {
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"餐飲": ["早餐", "午餐", "晚餐", "飲料", "便當", "餐飲"],
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"交通": ["捷運", "公車", "計程車", "油錢", "停車", "交通"],
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"購物": ["衣服", "3C", "日用品", "購物"],
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"娛樂": ["電影", "遊戲", "旅遊", "娛樂"],
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"醫療": ["藥局", "診所", "醫院", "醫療"],
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}
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for cat_name, keywords in default_rules.items():
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for kw in keywords:
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db.add(CategoryRule(
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user_id=new_user.id,
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category_id=parent_ids[cat_name],
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keyword=kw
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))
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db.add(LineUser(line_user_id=line_user_id, user_id=new_user.id))
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db.commit()
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return new_user.id
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def resolve_category(db, user_id: int, category_input: str) -> tuple[int, int | None]:
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"""
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回傳 (category_id, subcategory_id)
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先查 category_rules keyword
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找不到就新增 subcategory 到「其他」
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"""
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# 查 rule
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rule = db.query(CategoryRule).filter(
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CategoryRule.user_id == user_id,
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CategoryRule.keyword == category_input
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).first()
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if rule:
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return rule.category_id, None
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# 查是否是大類名稱
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parent = db.query(Category).filter(
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Category.user_id == user_id,
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Category.name == category_input,
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Category.parent_id == None
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).first()
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if parent:
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return parent.id, None
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# 查是否是已存在的小類
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sub = db.query(Category).filter(
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Category.user_id == user_id,
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Category.name == category_input,
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Category.parent_id != None
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).first()
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if sub:
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return sub.parent_id, sub.id
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# 找不到 → 新增 subcategory 到「其他」
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other = db.query(Category).filter(
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Category.user_id == user_id,
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Category.name == "其他",
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Category.parent_id == None
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).first()
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parent_id = other.id if other else None
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new_sub = Category(
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user_id=user_id,
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parent_id=parent_id,
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name=category_input,
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color="#6B7280",
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)
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db.add(new_sub)
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db.flush()
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db.add(CategoryRule(
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user_id=user_id,
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category_id=new_sub.id,
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keyword=category_input
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))
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return parent_id, new_sub.id
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def parse_multiline_expense(text: str) -> dict | None:
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"""解析多行記帳格式，欄位不限順序"""
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fields = {}
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field_map = {
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"品項": "item_name",
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"類別": "category",
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"金額": "amount",
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"店家": "seller_name",
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"備註": "note",
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}
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for line in text.strip().splitlines():
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for key, field in field_map.items():
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if line.startswith(f"{key}:") or line.startswith(f"{key}："):
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value = re.split(r"[:：]", line, 1)[-1].strip()
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if value:
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fields[field] = value
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break
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required = ["item_name", "category", "amount"]
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if not all(k in fields for k in required):
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return None
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try:
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fields["amount"] = float(re.sub(r"[^\d.]", "", fields["amount"]))
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except ValueError:
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return None
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return fields
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# Webhook endpoint
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@app.post("/webhook")
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async def webhook(request: Request):
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signature = request.headers.get("X-Line-Signature", "")
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body = await request.body()
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try:
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handler.handle(body.decode(), signature)
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except InvalidSignatureError:
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raise HTTPException(status_code=400, detail="Invalid signature")
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return "OK"
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def run_fetch_in_thread():
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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try:
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loop.run_until_complete(fetch_main())
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finally:
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loop.close()
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@app.get("/fetch")
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async def fetch_invoices():
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print("🚀 開始抓取發票...")
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thread = threading.Thread(target=run_fetch_in_thread)
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thread.start()
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return {"status": "started"}
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@handler.add(MessageEvent, message=TextMessageContent)
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def handle_message(event):
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line_user_id = event.source.user_id
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msg = event.message.text.strip()
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if msg.isdigit() and len(msg) == 5 and captcha_state.captcha_event and not captcha_state.captcha_event.is_set():
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captcha_state.captcha_answer = msg
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captcha_state.captcha_event.set()
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reply = "✅ 驗證碼已送出！"
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else:
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reply = handle_text(line_user_id, msg)
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with ApiClient(configuration) as api_client:
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line_bot_api = MessagingApi(api_client)
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line_bot_api.reply_message(
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ReplyMessageRequest(
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reply_token=event.reply_token,
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messages=[TextMessage(text=reply)]
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)
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)
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@handler.add(FollowEvent)
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def handle_follow(event):
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with ApiClient(configuration) as api_client:
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line_bot_api = MessagingApi(api_client)
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line_bot_api.reply_message(
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ReplyMessageRequest(
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reply_token=event.reply_token,
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messages=[TextMessage(text=(
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"👋 歡迎使用 Myfinance 記帳 Bot！\n\n"
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"📝 點下方「記帳」開始記帳\n"
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"📊 點「查今天」或「查本月」查詢\n\n"
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"開始記帳吧！💪"
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))]
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)
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)
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def handle_text(line_user_id: str, text: str) -> str:
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if text == "查今天":
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return query_today(line_user_id)
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if text == "查本月":
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return query_month(line_user_id)
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if text in ("記帳", "記帳說明"):
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return EXPENSE_TEMPLATE
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if text.startswith("刪除 "):
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return delete_expense(line_user_id, text[3:].strip())
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# 多行記帳格式
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if "\n" in text:
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fields = parse_multiline_expense(text)
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if fields:
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return save_expense(line_user_id, fields)
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return (
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"格式不正確 😅\n\n"
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"必填欄位：品項、類別、金額\n"
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"點下方「記帳」取得模板！"
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)
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return (
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"點下方「記帳」取得記帳模板\n"
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"或輸入「查今天」/「查本月」查詢"
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)
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def save_expense(line_user_id: str, fields: dict) -> str:
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db = SessionLocal()
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try:
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user_id = get_or_create_user(db, line_user_id)
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category_id, subcategory_id = resolve_category(db, user_id, fields["category"])
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db.add(Expense(
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user_id=user_id,
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category_id=subcategory_id or category_id,
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amount=fields["amount"],
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note=fields.get("note"),
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seller_name=fields.get("seller_name"),
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item_name=fields["item_name"],
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date=date.today(),
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))
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db.commit()
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reply = (
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f"✅ 已記錄！\n"
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f"品項：{fields['item_name']}\n"
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f"類別：{fields['category']}\n"
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f"金額：${fields['amount']:.0f}\n"
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)
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if fields.get("seller_name"):
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reply += f"店家：{fields['seller_name']}\n"
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if fields.get("note"):
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reply += f"備註：{fields['note']}\n"
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return reply.strip()
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except Exception as e:
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db.rollback()
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print("❌ 儲存失敗:", e)
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return "儲存失敗，請稍後再試"
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finally:
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db.close()
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def delete_expense(line_user_id: str, target: str) -> str:
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db = SessionLocal()
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try:
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user_id = get_or_create_user(db, line_user_id)
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rows = db.query(Expense).filter(
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Expense.user_id == user_id,
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text("DATE(date) = :today")
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).params(today=date.today()).all()
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if not rows:
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return "今天還沒有記錄 📭"
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if target.isdigit():
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idx = int(target) - 1
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if idx < 0 or idx >= len(rows):
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return f"沒有第 {target} 筆記錄，請先輸入「查今天」確認編號"
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row = rows[idx]
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db.delete(row)
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db.commit()
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return f"✅ 已刪除：{row.item_name} ${float(row.amount):.0f}"
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matched = [r for r in rows if r.item_name == target]
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if not matched:
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return f"今天沒有「{target}」的記錄"
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row = matched[-1]
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db.delete(row)
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db.commit()
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return f"✅ 已刪除：{row.item_name} ${float(row.amount):.0f}"
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except Exception as e:
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db.rollback()
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print("❌ 刪除失敗:", e)
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return "刪除失敗，請稍後再試"
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finally:
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db.close()
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def query_today(line_user_id: str) -> str:
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db = SessionLocal()
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try:
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user_id = get_or_create_user(db, line_user_id)
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rows = db.query(Expense).filter(
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Expense.user_id == user_id,
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text("DATE(date) = :today")
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).params(today=date.today()).all()
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if not rows:
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return "今天還沒有記錄 📭"
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total = sum(float(r.amount) for r in rows)
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lines = [
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f"{i+1}. {r.item_name} ${float(r.amount):.0f}" + (f"（{r.note}）" if r.note else "")
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for i, r in enumerate(rows)
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]
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return "📋 今日記錄：\n" + "\n".join(lines) + f"\n\n💰 合計：${total:.0f}\n\n🗑 刪除請輸入：刪除 編號\n例如：刪除 1"
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except Exception as e:
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print("❌ 查詢失敗:", e)
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return "查詢失敗，請稍後再試"
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finally:
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db.close()
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def query_month(line_user_id: str) -> str:
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db = SessionLocal()
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try:
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user_id = get_or_create_user(db, line_user_id)
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now = datetime.now()
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rows = db.query(Expense).filter(
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Expense.user_id == user_id,
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text("EXTRACT(YEAR FROM date) = :year AND EXTRACT(MONTH FROM date) = :month")
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).params(year=now.year, month=now.month).all()
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if not rows:
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return "本月還沒有記錄 📭"
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total = sum(float(r.amount) for r in rows)
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summary = {}
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for r in rows:
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key = r.item_name or "其他"
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summary[key] = summary.get(key, 0) + float(r.amount)
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lines = [f"{cat}：${amt:.0f}" for cat, amt in sorted(summary.items(), key=lambda x: -x[1])]
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return f"📊 本月統計（{now.month}月）：\n" + "\n".join(lines) + f"\n\n💰 總計：${total:.0f}"
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except Exception as e:
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print("❌ 查詢失敗:", e)
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return "查詢失敗，請稍後再試"
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finally:
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db.close() |