#!/bin/sh

# shellcheck disable=SC2119

# shellcheck source=../lib/load-configuration
. "${0%/*}/../lib/load-configuration"

# this script shall host all the tests that are too slow to be run on
# the buildmaster (thus, it runs asynchronously and must therefor be
# resilient against transient states of the buildmaster):
# - check sanity of git
# TODO:
# - check for differences of dependencies between mysql and git
# - check for differences of dependencies between mysql and packages
# - check for installability of packages

if pgrep -x ii; then
  >&2 'ii is already running - this will not work'
  exit 1
fi

rm -rf --one-file-system "${irc_dir}"

ii -s irc.freenode.net -n nit-picker -f nit-picker >/dev/null 2>&1 &
ii_pid=$!

trap 'kill "${ii_pid}"' EXIT

# wait for nickserv complaint
while ! grep -qF 'This nickname is registered. Please choose a different nickname' "${irc_dir}/nickserv/out"; do
  sleep 1
done

# register
printf 'identify %s\n' "${irc_password}" | \
  sponge "${irc_dir}/nickserv/in"

# wait for registering to succeed
while ! grep -qF 'You are now identified for' "${irc_dir}/nickserv/out"; do
  sleep 1
done

# join channel
echo '/j #archlinux32' | \
  sponge "${irc_dir}/in"

while [ ! -f "${irc_dir}/#archlinux32/out" ]; do
  sleep 1
done

mysql_load_min_and_max_versions

while pgrep -x ii >/dev/null; do
  # shellcheck disable=SC2016
  {
    printf 'SELECT DISTINCT'
    printf ' "commit",'
    printf '`git_repositories`.`name`,'
    printf '`package_sources`.`git_revision`'
    printf ' FROM `package_sources`'
    mysql_join_package_sources_upstream_repositories
    mysql_join_upstream_repositories_git_repositories
    printf ';\n'

    printf 'SELECT DISTINCT'
    printf ' "commit",'
    printf '"archlinux32",'
    printf '`package_sources`.`mod_git_revision`'
    printf ' FROM `package_sources`'
    printf ';\n'
  } | \
    mysql_run_query | \
    tr '\t' ' ' | \
    shuf | \
    while read -r action parameters; do
      if ! pgrep -x ii >/dev/null; then
        break
      fi
      case "${action}" in
        'commit') # check whether a given commit is present in the git repo
          git_repo="${parameters%% *}"
          git_rev="${parameters#${git_repo} }"
          eval "$(
            printf 'git_dir="${repo_paths__%s}"\n' \
              "${git_repo}"
          )"
          # shellcheck disable=SC2154
          if ! git -C "${git_dir}" cat-file -t "${git_rev}" 2> /dev/null | \
            grep -qxF 'commit'; then
            git -C "${git_dir}" fetch --all -p >/dev/null 2>&1
            if ! git -C "${git_dir}" cat-file -t "${git_rev}" 2> /dev/null | \
              grep -qxF 'commit'; then
              printf 'commit %s is missing from repository %s\n' \
                "${git_rev}" \
                "${git_repo}" \
              | irc_say
            fi
          fi
        ;;
        *)
          >&2 printf 'action "%s" is not yet implemented ...\n' "${action}"
        ;;
      esac
    done
  sleep 120
done