#!/usr/bin/env python3
"""100 個のサンプル請求書 PDF を生成する。
各 PDF: A4 1 枚、宛名・明細・合計を含む。WeasyPrint で HTML → PDF。
これをあとで pypdf でテキスト抽出 → 金額集計し、所要時間を測る。
"""
from __future__ import annotations
import random
from datetime import date, timedelta
from pathlib import Path
from weasyprint import HTML
random.seed(42)
OUT = Path(__file__).parent / "pdf"
OUT.mkdir(exist_ok=True)
CUSTOMERS = [
"山田農園", "鈴木商店", "高橋食品", "佐藤畜産", "田中株式会社",
"渡辺青果", "中村製作所", "小林技研", "斎藤運輸", "加藤建設",
"吉田出版", "山本印刷", "松本物流", "井上工業", "木村電機",
"林産業", "清水運送", "山崎商会", "森精密", "池田化学",
]
ITEMS = [
("コンサルティング業務", 80000, 250000),
("月額保守料", 30000, 120000),
("システム開発(時間単価)", 8000, 15000),
("出張費", 5000, 50000),
("資料制作", 20000, 100000),
("研修実施", 50000, 200000),
]
CSS = """
@page { size: A4; margin: 18mm; @bottom-center { content: counter(page); font-size: 8pt; color: #888; } }
body { font-family: 'Noto Serif CJK JP', serif; font-size: 10pt; color: #1a1a1a; }
h1 { font-size: 24pt; border-bottom: 2pt solid #1a1a1a; padding-bottom: 6pt; margin-bottom: 12pt; }
.meta { display: flex; justify-content: space-between; margin-bottom: 18pt; }
.meta div { font-size: 9pt; line-height: 1.7; }
table { width: 100%; border-collapse: collapse; margin: 18pt 0; }
th, td { border: 1pt solid #888; padding: 6pt 8pt; }
th { background: #ebe6d8; text-align: left; }
td.num { text-align: right; }
.totals { width: 50%; margin-left: auto; margin-top: 12pt; }
.totals td { border: none; padding: 4pt 6pt; }
.totals .label { text-align: right; }
.totals .num { text-align: right; }
.totals .grand { font-size: 14pt; font-weight: bold; border-top: 2pt solid #1a1a1a; padding-top: 8pt; }
.footer { margin-top: 36pt; font-size: 9pt; color: #666; border-top: 1pt solid #ccc; padding-top: 8pt; }
"""
def make_invoice(invoice_no: int) -> tuple[str, int]:
customer = random.choice(CUSTOMERS)
issue = date(2026, 4, 1) + timedelta(days=random.randint(0, 27))
due = issue + timedelta(days=30)
rows = []
subtotal = 0
n_items = random.randint(2, 5)
for _ in range(n_items):
name, lo, hi = random.choice(ITEMS)
qty = random.randint(1, 6)
unit = random.randint(lo, hi)
amt = qty * unit
subtotal += amt
rows.append(
f"| {name} | {qty} | "
f"{unit:,} 円 | {amt:,} 円 |
"
)
tax = subtotal // 10
total = subtotal + tax
html = f"""
請求書 №{invoice_no:04d}
| 小計: | {subtotal:,} 円 |
| 消費税(10%): | {tax:,} 円 |
| 合計金額: | {total:,} 円 |
"""
return html, total
def main():
grand_total = 0
for n in range(1, 101):
html, total = make_invoice(n)
path = OUT / f"INV-2026-{n:04d}.pdf"
HTML(string=html).write_pdf(path)
grand_total += total
files = sorted(OUT.glob("*.pdf"))
size = sum(p.stat().st_size for p in files)
print(f" 生成完了: {len(files)} ファイル / 合計サイズ {size / 1024:.1f} KB")
print(f" 全請求書の合計金額(正解): {grand_total:,} 円")
if __name__ == "__main__":
main()