"""ai-code-review-bots-compared.py - turn the vendors' published per-review cost figures into a
monthly range for your own pull-request volume and trigger setting.

The per-review figures are the ones the vendors publish, read 2026-09-24:
  GitHub Copilot code review: "an estimated $0.05 USD to $1 USD worth of AI credits with 'Lite'
      effort, and $0.25 USD to $5 USD worth of AI credits with 'Balanced' effort" (excludes GitHub
      Actions minutes).
  Claude Code Review (managed service): "Each review averages $15-25 in cost".
Gemini Code Assist on GitHub and the self-hosted claude-code-action publish no per-review figure,
so they are not estimated here.

The two figures are not the same kind of number: Copilot's is a typical range per review, Claude's
an average band. Treat the output as the order of magnitude, not a quote.

Reviews per pull request follow the trigger setting:
  once   - one review when the PR opens (Copilot automatic review without "Review new pushes";
           Claude "Once after PR creation")
  push   - one review on opening plus one per later push (Copilot "Review new pushes";
           Claude "After every push")

Standard library only; Python 3.8 or later.
Run:  python ai-code-review-bots-compared.py [prs_per_month] [pushes_after_opening]
      (defaults: 200 pull requests a month, 3 pushes after opening)
"""
import sys

PER_REVIEW = {                      # (low, high) US dollars per review, as published
    "Copilot, Lite effort": (0.05, 1.00),
    "Copilot, Balanced effort": (0.25, 5.00),
    "Claude Code Review": (15.00, 25.00),
}


def reviews_per_pr(trigger, pushes_after_opening):
    return 1 if trigger == "once" else 1 + pushes_after_opening


def monthly(prs, pushes_after_opening):
    rows = []
    for name, (lo, hi) in PER_REVIEW.items():
        for trigger in ("once", "push"):
            n = prs * reviews_per_pr(trigger, pushes_after_opening)
            rows.append((name, trigger, n, n * lo, n * hi))
    return rows


if __name__ == "__main__":
    prs = int(sys.argv[1]) if len(sys.argv) > 1 else 200
    pushes = int(sys.argv[2]) if len(sys.argv) > 2 else 3
    print(f"{prs} pull requests a month, {pushes} pushes after opening each")
    print(f"{'service':26} {'trigger':8} {'reviews':>8} {'low':>12} {'high':>12}")
    for name, trigger, n, lo, hi in monthly(prs, pushes):
        print(f"{name:26} {trigger:8} {n:8,d} {lo:12,.2f} {hi:12,.2f}")