#!/usr/bin/env bash
# Update "Tested up to" and "WC tested up to" to the versions that were just
# tested, and open a pull request if anything changed.
#
# Run only after the compatibility matrix has gone green against the current
# releases. The headers are a claim made to whoever installs the plugin — and
# in WooCommerce's case a banner the shop owner reads before deciding whether
# to update at all — so bumping them on a red build would be publishing a claim
# we have just watched fail.
#
# Writes nothing when the headers are already current, so a quiet week costs a
# green run and no noise.
set -euo pipefail

cd "$(dirname "$0")/.."
. ci/lib.sh
ci_load_conf

current_wp=$(curl -fsS --max-time 20 'https://api.wordpress.org/core/stable-check/1.0/' \
  | tr ',' '\n' | sed -n -E 's/.*"([0-9][^"]*)"[[:space:]]*:[[:space:]]*"latest".*/\1/p' | head -1)
current_wc=$(curl -fsS --max-time 20 'https://api.wordpress.org/plugins/info/1.0/woocommerce.json' \
  | sed -n -E 's/.*"version":"([^"]+)".*/\1/p' | head -1)

[ -n "$current_wp" ] || { echo "Could not read the current WordPress version." >&2; exit 1; }

readme=
for f in readme.txt README.txt; do [ -f "$f" ] && readme=$f && break; done

changed=()

if [ -n "$readme" ]; then
  tested_wp=$(sed -n -E 's/^Tested up to:[[:space:]]*([^[:space:]]+).*/\1/p' "$readme" | head -1)
  if [ "$tested_wp" != "$current_wp" ]; then
    sed -i -E "s/^Tested up to:.*/Tested up to: $current_wp/" "$readme"
    changed+=("WordPress ${tested_wp:-?} → $current_wp")
  fi
fi

if [ "$NEEDS_WOOCOMMERCE" = yes ] && [ -n "$current_wc" ]; then
  tested_wc=$(ci_plugin_header 'WC tested up to')
  if [ "$tested_wc" != "$current_wc" ]; then
    sed -i -E "s/^([[:space:]]*\*[[:space:]]*WC tested up to:).*/\1 $current_wc/" "$PLUGIN_MAIN"
    [ -n "$readme" ] && sed -i -E "s/^WC tested up to:.*/WC tested up to: $current_wc/" "$readme"
    changed+=("WooCommerce ${tested_wc:-?} → $current_wc")
  fi
fi

if [ ${#changed[@]} -eq 0 ]; then
  echo "The compatibility headers are already current — nothing to do."
  exit 0
fi

# Re-read from disk rather than trusting the sed: a pattern that matched
# nothing would otherwise produce an empty, cheerful pull request.
for f in "$PLUGIN_MAIN" ${readme:+"$readme"}; do
  git diff --quiet -- "$f" && continue
  echo "--- $f"
  git diff -- "$f" | sed -n '/^[+-][^+-]/p'
done
git diff --quiet && { echo "Nothing actually changed on disk — check the sed patterns." >&2; exit 1; }

branch="compat/tested-up-to-$current_wp-wc-$current_wc"
git config user.name "compatibility check"
git config user.email "noreply@localhost"
git checkout -b "$branch"
git commit -am "Tested against WordPress $current_wp and WooCommerce $current_wc

$(printf '%s\n' "${changed[@]}")

The compatibility matrix went green against these versions before this
was written, so the headers now say what was actually tested. WooCommerce
shows the 'WC tested up to' value to the shop owner as an untested-plugin
banner, which is what they read before deciding whether to press update."

git push -u origin "$branch"

gh pr create \
  --title "Tested against WordPress $current_wp and WooCommerce $current_wc" \
  --body "$(printf 'The weekly compatibility run passed against the current releases, so the headers are updated to match:\n\n%s\n\nOpened automatically by `ci/bump-tested-up-to.sh`. The versions here were tested before this PR existed; if the matrix had failed, the job that opens this would not have run.\n' "$(printf -- '- %s\n' "${changed[@]}")")"