#!/usr/bin/env bash
# Tier 2 — injects relevant ADR + workflow pointers when the user's prompt
# mentions concepts covered by an ADR or a hard ordering rule.
# stdout is appended to the agent's context for this turn.

set -euo pipefail

input=$(cat)
prompt=$(printf '%s' "$input" | jq -r '.prompt // ""' | tr '[:upper:]' '[:lower:]')

inject=()

if echo "$prompt" | grep -qE 'event|publish|consume|cross-feature|job queue'; then
  inject+=('Events/jobs: ADR-015 + docs/guides/events-and-jobs.md. Rules E0 (events for cross-feature only), E1 (handlers private), J0 (jobs for deferred work).')
fi
if echo "$prompt" | grep -qE 'realtime|socket\.io|channel|broadcast|presence'; then
  inject+=('Realtime: ADR-016 + docs/guides/realtime.md. Rules R0 (state delivery only), R1 (handlers private), R2 (socket.io in core-realtime only).')
fi
if echo "$prompt" | grep -qE 'audit|compliance|gdpr|dpa|erasure'; then
  inject+=('Audit: ADR-018 + docs/guides/audit-and-compliance.md. Optional core; scaffold with pnpm turbo gen core-package audit.')
fi
if echo "$prompt" | grep -qE 'sentry|otel|opentelemetry|tracing|instrumentation|pii|scrub'; then
  inject+=('Instrumentation: ADR-014 (interfaces) + ADR-017 (OTel migration). PII rules non-negotiable: sendDefaultPii=false, server-side scrub at OTel processor layer.')
fi
if echo "$prompt" | grep -qE 'use case|use-case|controller|repository|feature\.manifest|new feature|scaffold'; then
  inject+=('Manifest-first ordering: (1) manifest → (2) contracts (xInputSchema, xOutputSchema, IXUseCase) → (3) tests (red) → (4) impl (green). Use pnpm turbo gen feature/event/job/realtime — never hand-roll.')
fi
if echo "$prompt" | grep -qE 'prd|epic|story|task|sandcastle|dispatch|orchestrat'; then
  inject+=('Workflow: docs/architecture/agent-first-workflow-and-conformance.md + ADR-019. PRDs live in docs/work/prds/ — use the to-prd skill. Stress-test plans with grill-with-docs.')
fi
if echo "$prompt" | grep -qE 'di container|inject|bind-production|bind-dev-seed|symbols'; then
  inject+=('DI: ADR-008 (per-feature containers). Binders take ctx from core-shared/di. Use .toDynamicValue() for factory bindings. Tests inject mocks directly — no container rebinding.')
fi
if echo "$prompt" | grep -qE 'boundary|boundaries|cross-package|cross feature'; then
  inject+=('Boundaries: ADR-006 + ADR-010. Five tags (app|core|core-composition|feature|tooling). Features may only depend on core + tooling. Enforced by ESLint + Turborepo boundaries.')
fi
if echo "$prompt" | grep -qE 'coverage|uncovered|lcov|mutation|stryker|coverage band'; then
  inject+=('Coverage: ADR-020 + docs/guides/coverage.md (cookbook). 4 layers — L0 vitest thresholds, L1 pnpm coverage:diff (cover-the-diff), L2 coverage/summary.json (committed trend), L3 pnpm mutate (Stryker on entities + use-cases). Manifest-driven: feature.manifest.ts coverage.bands is the single source of truth.')
fi
if echo "$prompt" | grep -qE 'commit|message|changelog|conventional'; then
  inject+=('Conventional Commits (non-negotiable): <type>(<scope>): <imperative subject> (≤72 chars). Types: feat|fix|docs|style|refactor|test|chore|perf|ci|build|revert. Use `!` for breaking changes. Body explains WHY if non-obvious. Examples: feat(auth): hash password before persisting; refactor(docs)!: consolidate scaffolding into guides. See CLAUDE.md Key Conventions.')
fi
if echo "$prompt" | grep -qE 'release|version|bump|semver|tag\b'; then
  inject+=('Releases: ADR-021 + docs/guides/releasing.md. Hybrid versioning — root template (template-v...) + 5 feature packages (auth-v..., blog-v..., etc.) version independently from 0.1.0. release-please reads Conventional Commits and opens a rolling release PR on every push to main; merging cuts per-package tags. Bump targeting is by commit-path, not (scope). Pre-1.0 policy: feat: -> patch, feat!: -> minor.')
fi
if echo "$prompt" | grep -qE 'refactor|deepening|shallow|architecture|seam|adapter|interface design|design it twice'; then
  inject+=('Architecture refactors: invoke the improve-codebase-architecture skill (.claude/skills/improve-codebase-architecture/SKILL.md). Vocabulary: module (= feature by default in this repo) / interface / seam / adapter / depth / leverage / locality. Process: Explore -> Present numbered candidates -> Grilling loop. Hard constraints: respect ADRs 001-021 (factory-function shape, per-feature DI, manifest-first, generator-first, boundary tags, vendor isolation). Companion files: DEEPENING.md (dependency categories), INTERFACE-DESIGN.md (parallel sub-agent design pattern), LANGUAGE.md (vocab + this-repo identifier mapping).')
fi

if [ ${#inject[@]} -gt 0 ]; then
  echo "=== context-relevant pointers (from .claude/hooks/prompt-context.sh) ==="
  printf -- '- %s\n' "${inject[@]}"
fi

exit 0
