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* @module roll-forward-pirs/cli
* @description CLI argument parsing and the `runMain` orchestrator that
* ties together source discovery, validation, roll-forward, and emission.
*
* @author Hack23 AB
* @license Apache-2.0
*/
import fs from 'node:fs';
import path from 'node:path';
import { ANALYSIS_DIR, PIR_FILE, REPO_ROOT, VALID_CYCLES } from './constants.js';
import { emitRollforwardMd } from './emitter.js';
import { isLongHorizon } from './horizon.js';
import { rollForward } from './roll-forward.js';
import { findLatestSource } from './source-locator.js';
import type { CliArgs, CycleType, PirStatusFile, RunIO } from './types.js';
import { validateSource } from './validator.js';
export function parseArgs(argv: string[]): CliArgs {
const args: CliArgs = { dryRun: false, maxLookback: 14, emitRollforwardMd: false };
for (let i = 0; i < argv.length; i++) {
const arg = argv[i];
if (arg === '--from') args.from = argv[++i];
else if (arg === '--to') args.to = argv[++i];
else if (arg === '--date') args.date = argv[++i];
else if (arg === '--cycle') args.cycle = argv[++i] as CycleType;
else if (arg === '--dry-run') args.dryRun = true;
else if (arg === '--emit-rollforward-md') args.emitRollforwardMd = true;
else Eif (arg === '--max-lookback') {
const raw = argv[++i];
if (!raw || raw.startsWith('--')) {
throw new Error('--max-lookback requires a positive integer value');
}
const parsed = Number.parseInt(raw, 10);
if (!/^[0-9]+$/.test(raw.trim()) || !Number.isFinite(parsed) || parsed < 1) {
throw new Error(`--max-lookback must be a positive integer (received '${raw}')`);
}
args.maxLookback = parsed;
}
}
return args;
}
export function runMain(argv: string[], io: RunIO = {}): void {
const out = io.stdout ?? process.stdout;
const err = io.stderr ?? process.stderr;
const exit = io.exit ?? ((c: number): never => process.exit(c));
let args: CliArgs;
try {
args = parseArgs(argv);
} catch (e) {
err.write(`Argument error: ${String(e instanceof Error ? e.message : e)}\n`);
exit(1);
return;
}
let sourcePath: string;
let targetDir: string;
let targetDate: string;
let targetCycle: CycleType;
if (args.from && args.to) {
sourcePath = path.isAbsolute(args.from)
? path.join(args.from, PIR_FILE)
: path.join(REPO_ROOT, args.from, PIR_FILE);
targetDir = path.isAbsolute(args.to) ? args.to : path.join(REPO_ROOT, args.to);
if (!fs.existsSync(sourcePath)) {
err.write(`Source not found: ${sourcePath}\n`);
exit(1);
return;
}
const parts = targetDir.replace(/\\/g, '/').split('/');
const dailyIdx = parts.indexOf('daily');
const datePart = dailyIdx >= 0 && dailyIdx + 1 < parts.length ? (parts[dailyIdx + 1] ?? '') : '';
const cyclePart = dailyIdx >= 0 && dailyIdx + 2 < parts.length ? (parts[dailyIdx + 2] ?? '') : '';
targetDate = datePart;
targetCycle = cyclePart as CycleType;
if (!/^\d{4}-\d{2}-\d{2}$/.test(targetDate) || !VALID_CYCLES.has(targetCycle)) {
err.write(`Cannot derive date/cycle from --to path: ${args.to}\n`);
exit(1);
return;
}
} else if (args.date && args.cycle) {
if (!VALID_CYCLES.has(args.cycle)) {
err.write(`Unknown cycle: ${args.cycle}. Valid: ${[...VALID_CYCLES].join(', ')}\n`);
exit(1);
return;
}
targetDate = args.date;
targetCycle = args.cycle;
targetDir = path.join(ANALYSIS_DIR, targetDate, targetCycle);
const found = findLatestSource(targetCycle, targetDate, args.maxLookback);
Eif (!found) {
err.write(
`No previous pir-status.json found for cycle '${targetCycle}' within ${args.maxLookback} days before ${targetDate}. Exiting with code 1.\n`,
);
exit(1);
return;
}
sourcePath = found;
} else {
err.write(
'Usage:\n' +
' roll-forward-pirs --from <dir> --to <dir>\n' +
' roll-forward-pirs --date YYYY-MM-DD --cycle <cycle> [--dry-run] [--max-lookback N]\n',
);
exit(1);
return;
}
let rawSource: unknown;
try {
rawSource = JSON.parse(fs.readFileSync(sourcePath, 'utf-8'));
} catch (e) {
err.write(`Failed to read source: ${String(e)}\n`);
exit(2);
return;
}
let source: PirStatusFile;
try {
source = validateSource(rawSource, sourcePath);
} catch (e) {
err.write(`Schema validation error: ${String(e)}\n`);
exit(2);
return;
}
const opts: { now?: () => Date } = {};
if (io.now) opts.now = io.now;
const output = rollForward(source, sourcePath, targetDate, targetCycle, opts);
const json = JSON.stringify(output, null, 2) + '\n';
if (args.dryRun) {
out.write(json);
return;
}
if (!fs.existsSync(targetDir)) fs.mkdirSync(targetDir, { recursive: true });
const targetPath = path.join(targetDir, PIR_FILE);
fs.writeFileSync(targetPath, json, 'utf-8');
out.write(
`✅ Rolled forward ${source.pirs.filter((p) => p.status === 'open').length} open PIR(s) ` +
`from ${sourcePath.replace(REPO_ROOT + path.sep, '')} → ${targetPath.replace(REPO_ROOT + path.sep, '')}\n`,
);
if (args.emitRollforwardMd || isLongHorizon(targetCycle)) {
const sourcePirIds = new Set(source.pirs.map((p) => p.pir_id));
const md = emitRollforwardMd(output, sourcePath, targetDate, { sourcePirIds });
const mdPath = path.join(targetDir, 'horizon-pir-rollforward.md');
fs.writeFileSync(mdPath, md, 'utf-8');
out.write(
`📄 Emitted ${mdPath.replace(REPO_ROOT + path.sep, '')}\n`,
);
}
}
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