#!/bin/sh
# CI lint: flags tracker references — a `#N` tag or a full `.../issues/N`
# forge URL — anywhere in tracked text, source or docs. Prose, not tracker
# references: in code because tags rot; in markdown because the forge's
# public mirror carries no issue/PR data at all, so bare/qualified/glued
# `#N` and a full link are equally dead weight for a public reader — a
# full URL is the same problem spelled out longer, not a safer swap for a
# short tag. No markdown exemption: one used to exist, dropped once that
# read as still allowing exactly this.
#
# Emits a CI error annotation per hit, exits 1 if any hit is found. Its own
# required CI job (branch protection) — a hit blocks merge.
#
# Scope: every tracked `*.rs *.nix *.js *.ts *.tsx *.css *.html *.md`. Two
# alternatives: a hash, 2-5 digits, then non-alphanumeric-or-EOL (skips
# letter-bearing hex colours and digit-runs-then-letter, e.g. `#24h`;
# residual: a pure-numeric short hex trips it, write the six-digit form to
# dodge); or an `/issues/N` path segment, catching a full link via
# `$HIVE_FORGE_URL` or a literal domain alike.
#
# Escape hatch: a line with the marker `lint:allow` is exempt. Reserve it
# for a genuine non-tag hit (a `#123` heading example, test-input data) and
# keep a short reason next to it — not for a real reference of either
# form; rewrite those to prose that stands on its own instead.
set -eu

pattern='#[0-9]{2,5}([^0-9a-zA-Z]|$)|/issues/[0-9]+([^0-9a-zA-Z]|$)'

# `/dev/null` forces grep to always print a filename prefix, even when
# xargs hands it a single file. `-r`/`-0` keep it robust to odd paths and
# an empty file list. Lines carrying the `lint:allow` marker are dropped
# (legitimate non-tracker hit; see the header).
hits="$(
  git ls-files -z '*.rs' '*.nix' '*.js' '*.ts' '*.tsx' '*.css' '*.html' '*.md' \
    | xargs -0 -r grep -nE "$pattern" /dev/null 2>/dev/null \
    | grep -v 'lint:allow' || true
)"

if [ -n "$hits" ]; then
  echo "$hits" | while IFS=: read -r file lineno _; do
    printf '::error file=%s,line=%s::tracker reference — write prose that stands on its own, not a hash-number tag or a full issue URL (see /knowledge/hive-rules.md)\n' "$file" "$lineno"
  done
  count="$(printf '%s\n' "$hits" | wc -l | tr -d ' ')"
  printf 'check-issue-refs: %s tracker reference(s) found\n' "$count" >&2
  exit 1
fi
exit 0