feat: linebot

1. add DB CRUD
2. change expense format

app/main.py

@@ -5,10 +5,9 @@ import threading
 import nest_asyncio
 nest_asyncio.apply()
 import captcha_state
-from invoice_fetcher import main
+from invoice_fetcher import main as fetch_main
 from dotenv import load_dotenv
 from fastapi import FastAPI, Request, HTTPException
-from fastapi.staticfiles import StaticFiles
 from linebot.v3 import WebhookHandler
 from linebot.v3.messaging import (
     Configuration,
@@ -19,10 +18,9 @@ from linebot.v3.messaging import (
 )
 from linebot.v3.webhooks import MessageEvent, TextMessageContent, FollowEvent
 from linebot.v3.exceptions import InvalidSignatureError
-from sqlalchemy import create_engine, Column, Integer, String, Float, DateTime, text
+from sqlalchemy import create_engine, Column, Integer, String, Numeric, Date, DateTime, BigInteger, text
 from sqlalchemy.orm import declarative_base, sessionmaker
-from datetime import datetime
-
+from datetime import datetime, date
 
 load_dotenv()
 
@@ -33,22 +31,198 @@ configuration = Configuration(access_token=os.getenv("LINE_CHANNEL_ACCESS_TOKEN"
 handler = WebhookHandler(os.getenv("LINE_CHANNEL_SECRET"))
 
 # DB 設定
-# DATABASE_URL = os.getenv("DATABASE_URL")
-# engine = create_engine(DATABASE_URL)
-# SessionLocal = sessionmaker(bind=engine)
-# Base = declarative_base()
+DATABASE_URL = os.getenv("DATABASE_URL")
+engine = create_engine(DATABASE_URL)
+SessionLocal = sessionmaker(bind=engine)
+Base = declarative_base()
 
-# 資料表
-# class Transaction(Base):
-#     __tablename__ = "transactions"
-#     id = Column(Integer, primary_key=True, index=True)
-#     user_id = Column(String)
-#     category = Column(String)
-#     amount = Column(Float)
-#     note = Column(String, nullable=True)
-#     created_at = Column(DateTime, default=datetime.now)
+# Models
+class User(Base):
+    __tablename__ = "users"
+    id = Column(BigInteger, primary_key=True)
+    name = Column(String)
+    email = Column(String, unique=True)
 
-# Base.metadata.create_all(bind=engine)
+class LineUser(Base):
+    __tablename__ = "line_users"
+    id = Column(BigInteger, primary_key=True)
+    line_user_id = Column(String, unique=True)
+    user_id = Column(BigInteger)
+    created_at = Column(DateTime, default=datetime.now)
+
+class Category(Base):
+    __tablename__ = "categories"
+    id = Column(BigInteger, primary_key=True)
+    user_id = Column(BigInteger)
+    parent_id = Column(BigInteger, nullable=True)
+    name = Column(String)
+    color = Column(String, default='#3B82F6')
+    icon = Column(String, nullable=True)
+
+class CategoryRule(Base):
+    __tablename__ = "category_rules"
+    id = Column(BigInteger, primary_key=True)
+    user_id = Column(BigInteger)
+    category_id = Column(BigInteger)
+    keyword = Column(String)
+
+class Expense(Base):
+    __tablename__ = "expenses"
+    id = Column(BigInteger, primary_key=True)
+    user_id = Column(BigInteger)
+    category_id = Column(BigInteger, nullable=True)
+    amount = Column(Numeric(10, 2))
+    note = Column(String, nullable=True)
+    invoice_number = Column(String, nullable=True)
+    seller_name = Column(String, nullable=True)
+    item_name = Column(String, nullable=True)
+    date = Column(Date)
+    created_at = Column(DateTime, default=datetime.now)
+    updated_at = Column(DateTime, default=datetime.now)
+
+# 記帳模板
+EXPENSE_TEMPLATE = (
+    "請填寫以下記帳資料後傳回：\n\n"
+    "品項: \n"
+    "類別: \n"
+    "金額: \n"
+    "店家: \n"
+    "備註: "
+)
+
+def get_or_create_user(db, line_user_id: str) -> int:
+    line_user = db.query(LineUser).filter(
+        LineUser.line_user_id == line_user_id
+    ).first()
+    if line_user:
+        return line_user.user_id
+
+    new_user = User(
+        name="LINE用戶",
+        email=f"{line_user_id}@line.user"
+    )
+    db.add(new_user)
+    db.flush()
+
+    default_categories = [
+        ("餐飲", "#F97316", "🍽"),
+        ("交通", "#3B82F6", "🚗"),
+        ("購物", "#8B5CF6", "🛍"),
+        ("娛樂", "#EC4899", "🎮"),
+        ("醫療", "#10B981", "🏥"),
+        ("其他", "#6B7280", "📦"),
+    ]
+    parent_ids = {}
+    for name, color, icon in default_categories:
+        cat = Category(user_id=new_user.id, name=name, color=color, icon=icon)
+        db.add(cat)
+        db.flush()
+        parent_ids[name] = cat.id
+
+    default_rules = {
+        "餐飲": ["早餐", "午餐", "晚餐", "飲料", "便當", "餐飲"],
+        "交通": ["捷運", "公車", "計程車", "油錢", "停車", "交通"],
+        "購物": ["衣服", "3C", "日用品", "購物"],
+        "娛樂": ["電影", "遊戲", "旅遊", "娛樂"],
+        "醫療": ["藥局", "診所", "醫院", "醫療"],
+    }
+    for cat_name, keywords in default_rules.items():
+        for kw in keywords:
+            db.add(CategoryRule(
+                user_id=new_user.id,
+                category_id=parent_ids[cat_name],
+                keyword=kw
+            ))
+
+    db.add(LineUser(line_user_id=line_user_id, user_id=new_user.id))
+    db.commit()
+    return new_user.id
+
+def resolve_category(db, user_id: int, category_input: str) -> tuple[int, int | None]:
+    """
+    回傳 (category_id, subcategory_id)
+    先查 category_rules keyword
+    找不到就新增 subcategory 到「其他」
+    """
+    # 查 rule
+    rule = db.query(CategoryRule).filter(
+        CategoryRule.user_id == user_id,
+        CategoryRule.keyword == category_input
+    ).first()
+    if rule:
+        return rule.category_id, None
+
+    # 查是否是大類名稱
+    parent = db.query(Category).filter(
+        Category.user_id == user_id,
+        Category.name == category_input,
+        Category.parent_id == None
+    ).first()
+    if parent:
+        return parent.id, None
+
+    # 查是否是已存在的小類
+    sub = db.query(Category).filter(
+        Category.user_id == user_id,
+        Category.name == category_input,
+        Category.parent_id != None
+    ).first()
+    if sub:
+        return sub.parent_id, sub.id
+
+    # 找不到 → 新增 subcategory 到「其他」
+    other = db.query(Category).filter(
+        Category.user_id == user_id,
+        Category.name == "其他",
+        Category.parent_id == None
+    ).first()
+    parent_id = other.id if other else None
+
+    new_sub = Category(
+        user_id=user_id,
+        parent_id=parent_id,
+        name=category_input,
+        color="#6B7280",
+    )
+    db.add(new_sub)
+    db.flush()
+
+    db.add(CategoryRule(
+        user_id=user_id,
+        category_id=new_sub.id,
+        keyword=category_input
+    ))
+
+    return parent_id, new_sub.id
+
+def parse_multiline_expense(text: str) -> dict | None:
+    """解析多行記帳格式，欄位不限順序"""
+    fields = {}
+    field_map = {
+        "品項": "item_name",
+        "類別": "category",
+        "金額": "amount",
+        "店家": "seller_name",
+        "備註": "note",
+    }
+    for line in text.strip().splitlines():
+        for key, field in field_map.items():
+            if line.startswith(f"{key}:") or line.startswith(f"{key}："):
+                value = re.split(r"[:：]", line, 1)[-1].strip()
+                if value:
+                    fields[field] = value
+                break
+
+    required = ["item_name", "category", "amount"]
+    if not all(k in fields for k in required):
+        return None
+
+    try:
+        fields["amount"] = float(re.sub(r"[^\d.]", "", fields["amount"]))
+    except ValueError:
+        return None
+
+    return fields
 
 # Webhook endpoint
 @app.post("/webhook")
@@ -62,11 +236,10 @@ async def webhook(request: Request):
     return "OK"
 
 def run_fetch_in_thread():
-    # 開一個全新的 event loop 跑 Playwright
     loop = asyncio.new_event_loop()
     asyncio.set_event_loop(loop)
     try:
-        loop.run_until_complete(main())
+        loop.run_until_complete(fetch_main())
     finally:
         loop.close()
 
@@ -75,18 +248,19 @@ async def fetch_invoices():
     print("🚀 開始抓取發票...")
     thread = threading.Thread(target=run_fetch_in_thread)
     thread.start()
-    return {"status": "started"}  # 立刻回傳，不等爬蟲
+    return {"status": "started"}
 
 @handler.add(MessageEvent, message=TextMessageContent)
 def handle_message(event):
-    user_id = event.source.user_id
-    text = event.message.text.strip()
-    if text.isdigit() and captcha_state.captcha_event and not captcha_state.captcha_event.is_set():
-        captcha_state.captcha_answer = text
-        captcha_state.captcha_event.set()  # 通知爬蟲
+    line_user_id = event.source.user_id
+    msg = event.message.text.strip()
+
+    if msg.isdigit() and len(msg) == 5 and captcha_state.captcha_event and not captcha_state.captcha_event.is_set():
+        captcha_state.captcha_answer = msg
+        captcha_state.captcha_event.set()
         reply = "✅ 驗證碼已送出！"
     else:
-        reply = parse_and_save(user_id, text)
+        reply = handle_text(line_user_id, msg)
 
     with ApiClient(configuration) as api_client:
         line_bot_api = MessagingApi(api_client)
@@ -106,142 +280,155 @@ def handle_follow(event):
                 reply_token=event.reply_token,
                 messages=[TextMessage(text=(
                     "👋 歡迎使用 Myfinance 記帳 Bot！\n\n"
-                    "📝 記帳格式：\n"
-                    "類別 金額\n"
-                    "類別 金額 備註\n\n"
-                    "範例：\n"
-                    "早餐 80\n"
-                    "午餐 120 便當\n"
-                    "交通 50 捷運\n\n"
-                    "📊 查詢指令：\n"
-                    "查今天 → 今日明細\n"
-                    "查本月 → 本月統計\n\n"
+                    "📝 點下方「記帳」開始記帳\n"
+                    "📊 點「查今天」或「查本月」查詢\n\n"
                     "開始記帳吧！💪"
                 ))]
             )
         )
 
-def parse_and_save(user_id: str, text: str) -> str:
-    # 查詢指令
+def handle_text(line_user_id: str, text: str) -> str:
     if text == "查今天":
-        return query_today(user_id)
+        return query_today(line_user_id)
     if text == "查本月":
-        return query_month(user_id)
-    if text == "記帳說明":
-        return (
-            "📝 記帳格式：\n"
-            "類別 金額\n"
-            "類別 金額 備註\n\n"
-            "範例：\n"
-            "早餐 80\n"
-            "午餐 120 便當\n"
-            "交通 50 捷運\n\n"
-            "輸入後 Bot 會自動記錄 ✅"
-        )
-    
-    # 刪除指令：刪除 1 或 刪除 早餐
+        return query_month(line_user_id)
+    if text in ("記帳", "記帳說明"):
+        return EXPENSE_TEMPLATE
     if text.startswith("刪除 "):
-        target = text[3:].strip()
-        return delete_transaction(user_id, target)
+        return delete_expense(line_user_id, text[3:].strip())
 
+    # 多行記帳格式
+    if "\n" in text:
+        fields = parse_multiline_expense(text)
+        if fields:
+            return save_expense(line_user_id, fields)
+        return (
+            "格式不正確 😅\n\n"
+            "必填欄位：品項、類別、金額\n"
+            "點下方「記帳」取得模板！"
+        )
 
-    if re.match(r"^\d{5}$", text):
-        return f"接收到驗證碼{text}"
+    return (
+        "點下方「記帳」取得記帳模板\n"
+        "或輸入「查今天」/「查本月」查詢"
+    )
 
-    return "格式錯誤 😅\n記帳請輸入：類別 金額\n例如：早餐 80\n\n查詢請輸入：查今天 / 查本月"
-
-def save_transaction(user_id, category, amount, note):
-    print(f"記錄交易（模擬）：{user_id} {category} {amount} {note}")
-    # db = SessionLocal()
-    # try:
-    #     db.add(Transaction(user_id=user_id, category=category, amount=amount, note=note))
-    #     db.commit()
-    # finally:
-    #     db.close()
-
-def delete_transaction(user_id: str, target: str) -> str:
-    # db = SessionLocal()
+def save_expense(line_user_id: str, fields: dict) -> str:
+    db = SessionLocal()
     try:
-        today = datetime.now().date()
-        # rows = db.query(Transaction).filter(
-        #     Transaction.user_id == user_id,
-        #     text("DATE(created_at) = :today")
-        # ).params(today=today).all()
+        user_id = get_or_create_user(db, line_user_id)
+        category_id, subcategory_id = resolve_category(db, user_id, fields["category"])
 
-        # if not rows:
-        #     return "今天還沒有記錄 📭"
+        db.add(Expense(
+            user_id=user_id,
+            category_id=subcategory_id or category_id,
+            amount=fields["amount"],
+            note=fields.get("note"),
+            seller_name=fields.get("seller_name"),
+            item_name=fields["item_name"],
+            date=date.today(),
+        ))
+        db.commit()
 
-        # 用編號刪除
-        # if target.isdigit():
-        #     idx = int(target) - 1
-        #     if idx < 0 or idx >= len(rows):
-        #         return f"沒有第 {target} 筆記錄，請先輸入「查今天」確認編號"
-        #     row = rows[idx]
-        #     db.delete(row)
-        #     db.commit()
-        #     return f"✅ 已刪除：{row.category} ${row.amount:.0f}"
-
-        # 用類別刪除（刪最後一筆）
-        # matched = [r for r in rows if r.category == target]
-        # if not matched:
-        #     return f"今天沒有「{target}」的記錄"
-        # row = matched[-1]
-        # db.delete(row)
-        # db.commit()
-        # return f"✅ 已刪除：{row.category} ${row.amount:.0f}"
-        return f"已刪除（模擬）"
-
-    # finally:
-    #     db.close()
+        reply = (
+            f"✅ 已記錄！\n"
+            f"品項：{fields['item_name']}\n"
+            f"類別：{fields['category']}\n"
+            f"金額：${fields['amount']:.0f}\n"
+        )
+        if fields.get("seller_name"):
+            reply += f"店家：{fields['seller_name']}\n"
+        if fields.get("note"):
+            reply += f"備註：{fields['note']}\n"
+        return reply.strip()
     except Exception as e:
+        db.rollback()
+        print("❌ 儲存失敗:", e)
+        return "儲存失敗，請稍後再試"
+    finally:
+        db.close()
+
+def delete_expense(line_user_id: str, target: str) -> str:
+    db = SessionLocal()
+    try:
+        user_id = get_or_create_user(db, line_user_id)
+        rows = db.query(Expense).filter(
+            Expense.user_id == user_id,
+            text("DATE(date) = :today")
+        ).params(today=date.today()).all()
+
+        if not rows:
+            return "今天還沒有記錄 📭"
+
+        if target.isdigit():
+            idx = int(target) - 1
+            if idx < 0 or idx >= len(rows):
+                return f"沒有第 {target} 筆記錄，請先輸入「查今天」確認編號"
+            row = rows[idx]
+            db.delete(row)
+            db.commit()
+            return f"✅ 已刪除：{row.item_name} ${float(row.amount):.0f}"
+
+        matched = [r for r in rows if r.item_name == target]
+        if not matched:
+            return f"今天沒有「{target}」的記錄"
+        row = matched[-1]
+        db.delete(row)
+        db.commit()
+        return f"✅ 已刪除：{row.item_name} ${float(row.amount):.0f}"
+    except Exception as e:
+        db.rollback()
         print("❌ 刪除失敗:", e)
         return "刪除失敗，請稍後再試"
+    finally:
+        db.close()
 
-def query_today(user_id):
-    # db = SessionLocal()
+def query_today(line_user_id: str) -> str:
+    db = SessionLocal()
     try:
-        today = datetime.now().date()
-        # rows = db.query(Transaction).filter(
-        #     Transaction.user_id == user_id,
-        #     text("DATE(created_at) = :today")
-        # ).params(today=today).all()
-        # if not rows:
-        #     return "今天還沒有記錄 📭"
-        # total = sum(r.amount for r in rows)
-        # lines = [
-        #     f"{i+1}. {r.category} ${r.amount:.0f}" + (f"（{r.note}）" if r.note else "")
-        #     for i, r in enumerate(rows)
-        # ]
-        # return "📋 今日記錄：\n" + "\n".join(lines) + f"\n\n💰 合計：${total:.0f}\n\n🗑 刪除請輸入：刪除 編號\n例如：刪除 1"
-        print(f"查詢今日記錄（模擬）")
-        return "📋 今日記錄：\n1. 早餐 $80\n2. 午餐 $120 便當\n3. 交通 $50 捷運\n\n💰 合計：$250\n\n🗑 刪除請輸入：刪除 編號\n例如：刪除 1"
-    # finally:
-        # db.close()
+        user_id = get_or_create_user(db, line_user_id)
+        rows = db.query(Expense).filter(
+            Expense.user_id == user_id,
+            text("DATE(date) = :today")
+        ).params(today=date.today()).all()
+
+        if not rows:
+            return "今天還沒有記錄 📭"
+
+        total = sum(float(r.amount) for r in rows)
+        lines = [
+            f"{i+1}. {r.item_name} ${float(r.amount):.0f}" + (f"（{r.note}）" if r.note else "")
+            for i, r in enumerate(rows)
+        ]
+        return "📋 今日記錄：\n" + "\n".join(lines) + f"\n\n💰 合計：${total:.0f}\n\n🗑 刪除請輸入：刪除 編號\n例如：刪除 1"
     except Exception as e:
         print("❌ 查詢失敗:", e)
         return "查詢失敗，請稍後再試"
+    finally:
+        db.close()
 
-def query_month(user_id):
-    # db = SessionLocal()
+def query_month(line_user_id: str) -> str:
+    db = SessionLocal()
     try:
+        user_id = get_or_create_user(db, line_user_id)
         now = datetime.now()
-        # rows = db.query(Transaction).filter(
-        #     Transaction.user_id == user_id,
-        #     text("EXTRACT(YEAR FROM created_at) = :year AND EXTRACT(MONTH FROM created_at) = :month")
-        # ).params(year=now.year, month=now.month).all()
-        # if not rows:
-            # return "本月還沒有記錄 📭"
-        # total = sum(r.amount for r in rows)
-        # 依類別統計
-        # summary = {}
-        # for r in rows:
-        #     summary[r.category] = summary.get(r.category, 0) + r.amount
-        # lines = [f"{cat}：${amt:.0f}" for cat, amt in sorted(summary.items(), key=lambda x: -x[1])]
-        # return f"📊 本月統計（{now.month}月）：\n" + "\n".join(lines) + f"\n\n💰 總計：${total:.0f}"
-        print(f"查詢本月記錄（模擬）")
-        return f"📊 本月統計（{now.month}月）：\n早餐：$800\n午餐：$1200\n交通：$500\n\n💰 總計：$2500"
-    # finally:
-        # db.close()
+        rows = db.query(Expense).filter(
+            Expense.user_id == user_id,
+            text("EXTRACT(YEAR FROM date) = :year AND EXTRACT(MONTH FROM date) = :month")
+        ).params(year=now.year, month=now.month).all()
+
+        if not rows:
+            return "本月還沒有記錄 📭"
+
+        total = sum(float(r.amount) for r in rows)
+        summary = {}
+        for r in rows:
+            key = r.item_name or "其他"
+            summary[key] = summary.get(key, 0) + float(r.amount)
+        lines = [f"{cat}：${amt:.0f}" for cat, amt in sorted(summary.items(), key=lambda x: -x[1])]
+        return f"📊 本月統計（{now.month}月）：\n" + "\n".join(lines) + f"\n\n💰 總計：${total:.0f}"
     except Exception as e:
         print("❌ 查詢失敗:", e)
-        return "查詢失敗，請稍後再試"
+        return "查詢失敗，請稍後再試"
+    finally:
+        db.close()