/**
 * Sideways review (multi-agent wave D2).
 *
 * A finding is a defect class, not a line: the same pattern usually sits at
 * another ingress, command or call site, and the severity is the worst
 * sibling's. These resolvers render that rule once:
 *
 *   {{SIDEWAYS_SWEEP}}          review Step 4: sweep + the forced-CRITICAL list
 *   {{SIDEWAYS_SWEEP:cso}}      /cso Phase 12: the sibling sweep only (D2: nothing else)
 *   {{FLAKE_FIX_NUMBER:review}} a test-only flake fix needs P(fail | regression) before and after
 *
 * `undeclaredBehaviorLines()` is the Scope Check addition the plan-completion
 * resolver (scripts/resolvers/plan-gates.ts, review mode) renders: diff
 * behavior the author's summary omits, and no approval without a recorded
 * full-diff read. The forced-CRITICAL classes are data so the review checklist
 * test and the rendered prose cannot drift (decision D8a: CRITICAL/INFORMATIONAL
 * stay the vocabulary; the list is what no lane may downgrade).
 */
import type { TemplateContext } from './types';

export const FORCED_CRITICAL = ['data loss', 'trust-boundary bypass', 'uncapped spend'] as const;

export function forcedCriticalPhrase(): string {
  return 'data loss, a trust-boundary bypass or uncapped spend';
}

export function generateSidewaysSweep(_ctx: TemplateContext, args?: string[]): string {
  if (args?.[0] === 'cso') {
    return 'After supporting a finding, grep its pattern at every other in-scope ingress, command and call site; severity follows the worst sibling.';
  }
  return `**Sideways sweep (every finding; reads code OUTSIDE the diff).** Grep the finding's pattern at every other ingress, command and call site, Read each match and rate severity on the worst sibling; a new enum value, status, tier or type constant is traced through every consumer the same way (checklist: Sideways sweep). ${forcedCriticalPhrase().replace(/^d/, 'D')} is forced CRITICAL: no lane, specialist, dedup or saved decision downgrades it. Keep findings anchored to changed code.`;
}

export function generateFlakeFixNumber(_ctx: TemplateContext, _args?: string[]): string {
  return `A test-only flake fix (timeout, retry, looser assertion, skip) states \`P(fail | regression)\` before and after, from a forced probe; without both numbers it is RH-15.`;
}

/** The Scope Check lines the review-mode plan-completion audit adds (D2). */
export function undeclaredBehaviorLines(): { fields: string; rule: string } {
  return {
    fields: `Diff read: full (<n> files, <m> hunks) | partial (<unread paths>)
Undeclared behavior changes: <behavior the diff changes that the PR body, commit messages and plan do not state> | none`,
    rule: `\`Diff read\` records Step 3's full-diff read; \`Scope Check: CLEAN\`, and options B and C above, count as approved only with \`Diff read: full\` recorded. A partial read is \`DRIFT DETECTED\` naming the unread paths. \`Undeclared behavior changes\` lists every behavior the diff changes (a default, an exit code, a stored value, a route, a side effect) that the author's own summary omits; each is a Scope Check item for the reviewer, never silently CLEAN.`,
  };
}