# プロジェクトの初期化とFastAPIの追加を一括で
uv init pricetracker
cd pricetracker
uv add fastapi uvicorn
uv run uvicorn app.main:app --reload

# プロジェクトディレクトリの作成
uv init pricetracker
cd pricetracker

# これにより以下が作成されます:
# pricetracker/
#   pyproject.toml
#   .python-version
#   hello.py
#   .venv/  (自動作成される仮想環境)

Initialized project pricetracker

# FastAPIとUvicornの追加
uv add fastapi uvicorn[standard]

# pyproject.tomlの確認
cat pyproject.toml

[project]
name = "pricetracker"
version = "0.1.0"
requires-python = ">=3.11"
dependencies = [
    "fastapi>=0.115.0",
    "uvicorn[standard]>=0.30.0",
]

# 全ディレクトリの作成
mkdir -p app/api/routes app/models app/schemas app/services app/core
mkdir -p tests alembic docker

# __init__.pyファイルの作成
touch app/__init__.py app/api/__init__.py app/api/routes/__init__.py
touch app/models/__init__.py app/schemas/__init__.py
touch app/services/__init__.py app/core/__init__.py
touch tests/__init__.py

CONTAINER ID   IMAGE     STATUS    
abc123         latest    Up 2 hours

from fastapi import FastAPI

app = FastAPI(
    title="PriceTracker API",
    description="eコマース向けSaaS価格追跡サービス",
    version="0.1.0",
)

@app.get("/health")
async def health_check():
    return {"status": "healthy", "service": "pricetracker"}

# 関数定義成功

# ホットリロードで起動 - コード変更で自動再起動
uv run uvicorn app.main:app --reload --host 0.0.0.0 --port 8000

INFO:     Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit)
INFO:     Started reloader process
INFO:     Started server process
INFO:     Waiting for application startup.
INFO:     Application startup complete.

# 本番:複数ワーカー, リロードなし
uv run uvicorn app.main:app --host 0.0.0.0 --port 8000 --workers 4

# コマンド実行成功

# .env - このファイルをgitにコミットしてはいけません!
APP_NAME=PriceTracker
DEBUG=true
DATABASE_URL=postgresql+asyncpg://pricetracker:secret@localhost:5432/pricetracker
REDIS_URL=redis://localhost:6379/0
SECRET_KEY=your-super-secret-key-change-in-production
ALGORITHM=HS256
ACCESS_TOKEN_EXPIRE_MINUTES=30

// 実行成功

# app/core/config.py
from pydantic_settings import BaseSettings

class Settings(BaseSettings):
    app_name: str = "PriceTracker"
    debug: bool = False
    database_url: str = "postgresql+asyncpg://localhost/pricetracker"
    redis_url: str = "redis://localhost:6379/0"
    secret_key: str = "change-me-in-production"
    algorithm: str = "HS256"
    access_token_expire_minutes: int = 30

    model_config = {"env_file": ".env", "env_file_encoding": "utf-8"}

settings = Settings()

# 実行成功

# app/main.py
from fastapi import FastAPI
from app.core.config import settings

app = FastAPI(
    title=settings.app_name,
    debug=settings.debug,
)

@app.get("/info")
async def app_info():
    return {
        "app": settings.app_name,
        "debug": settings.debug,
        "database": settings.database_url.split("@")[-1],  # 認証情報を隠す
    }

# 関数定義成功

# .gitignoreに追加
.env
.env.local
.env.production
.venv/
__pycache__/
*.pyc

# pyproject.toml依存関係:fastapi, uvicorn, pydantic-settings
from fastapi import FastAPI
from pydantic_settings import BaseSettings

class Settings(BaseSettings):
    app_name: str = "PriceTracker"
    debug: bool = False
    database_url: str = "postgresql+asyncpg://user:pass@localhost/pricetracker"

    model_config = {"env_file": ".env"}

settings = Settings()
app = FastAPI(title=settings.app_name, debug=settings.debug)

@app.get("/health")
async def health():
    return {"status": "ok", "app": settings.app_name}

@app.get("/info")
async def info():
    return {"app": settings.app_name, "debug": settings.debug}
# 起動:uv run uvicorn app.main:app --reload

GET /health → {"status":"ok","app":"PriceTracker"}
GET /info → {"app":"PriceTracker","debug":false}