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import csv
import html
import importlib.util
import json
from pathlib import Path
import time

from refined_v4.report import curves
from refined_v4.study import read, write


def update(root: Path, results: Path):
    plan = read(root / 'plan.json')
    records = []
    for case in plan['cases']:
        folder = Path(case['output'])
        points = curves(folder)
        latest = (points['rl'] or points['sft'] or [None])[-1]
        records.append(dict(case=case, curves=points, latest=latest,
            complete=(folder / 'complete.json').exists(),
            resume=read(folder / 'resume.json') if (folder / 'resume.json').exists() else {},
            wandb=read(folder / 'wandb.json') if (folder / 'wandb.json').exists() else {}))
    write(results / '.cache/runs.json', dict(updated=time.time(), protocol=plan, runs=records))
    with (results / 'summary.csv').open('w', newline='') as stream:
        writer = csv.DictWriter(stream, fieldnames=['task', 'model', 'phase', 'counter', 'pass1', 'complete', 'wandb'])
        writer.writeheader()
        for row in records:
            latest = row['latest'] or {}
            writer.writerow(dict(task=row['case']['task'], model=row['case']['model'],
                phase='complete' if row['complete'] else row['resume'].get('phase', 'waiting'),
                counter=latest.get('counter', ''), pass1=latest.get('metric', {}).get('pass1', ''),
                complete=row['complete'], wandb=row['wandb'].get('url', '')))
    script = results / '.plotting/plot.py'
    spec = importlib.util.spec_from_file_location('math_revision_plot', script)
    module = importlib.util.module_from_spec(spec)
    spec.loader.exec_module(module)
    module.plot(records, results, plan['sft_tokens'])
    rows = []
    for row in records:
        metric = (row['latest'] or {}).get('metric', {})
        url = row['wandb'].get('url', '')
        score = f'{metric["pass1"]:.1%}' if metric.get('pass1') is not None else '—'
        cells = [row['case']['label'], row['case']['model'], 'Complete' if row['complete'] else row['resume'].get('phase', 'Waiting'), score]
        rows.append('<tr>' + ''.join('<td>' + html.escape(str(value)) + '</td>' for value in cells)
                    + f'<td><a href="{html.escape(url)}">W&amp;B</a></td></tr>')
    budget = plan['sft_tokens']
    sibling = '../index.html' if root.name == 'pilot-2m' else 'pilot-2m/index.html'
    (results / 'index.html').write_text(f'''<!doctype html><html><head><meta charset="utf-8"><meta http-equiv="refresh" content="120">
<title>Math-v1</title><style>body{{font:15px system-ui;max-width:1100px;margin:30px auto;padding:20px}}img{{width:100%}}td,th{{padding:8px;text-align:left}}table{{width:100%;border-collapse:collapse}}tr{{border-bottom:1px solid #ddd}}</style></head><body>
<h1>Math-v1 · {budget:,} SFT tokens</h1><p>{sum(row['complete'] for row in records)}/16 complete. Four base models at 30 TPP; 65,536 RL samples with groups of 32.</p>
<p>Small arithmetic, locked GSM calculations, and uniform missing lengths 1–16 sampled before eligible questions. Native few-shot documents. Difficulty is logged separately from hint length.</p>
<p><a href="{sibling}">Other SFT budget</a> · <a href="https://huggingface.co/datasets/davidheineman/tiny-rl-refined-math-v1">Dataset</a> · <a href="summary.csv">CSV</a></p>
<img src="sft_and_rl.png"><img src="difficulty.png"><table><tr><th>Task</th><th>Model</th><th>Stage</th><th>Pass@1</th><th>Run</th></tr>{''.join(rows)}</table></body></html>''')