#!/usr/bin/env bash
# Stop pipeline, optionally rotate source index, restart (v0 switch_quality.sh cleanup).
set -euo pipefail

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
# shellcheck disable=SC1091
source "${ROOT}/lib/common.sh"

VARIANT="${1:-}"
SRC="${SRC:-}"

if [[ "${VARIANT}" == "stop" ]]; then
  exec "${ROOT}/bin/stop.sh"
fi

case "${VARIANT}" in
  blur|blurred) export FILTER_PROFILE=blurred ;;
  nologo) export FILTER_PROFILE=nologo ;;
  default|'') export FILTER_PROFILE=default ;;
  encode-only|record)
    export RUN_ENCODE_ONLY=1
    ;;
  [0-9]*)
    SRC="${VARIANT}"
    ;;
esac

if [[ -z "${SRC}" && -f "${ROOT}/.current_source" ]]; then
  # rotate index in sources.list
  if [[ -f "${SOURCES_LIST}" ]]; then
    count="$(grep -vc '^[[:space:]]*#' "${SOURCES_LIST}" || true)"
    cur=1
    [[ -f "${ROOT}/.current_index" ]] && cur="$(cat "${ROOT}/.current_index")"
    cur=$((cur + 1))
    [[ "${count}" -gt 0 && "${cur}" -gt "${count}" ]] && cur=1
    echo "${cur}" > "${ROOT}/.current_index"
    SRC="${cur}"
  fi
fi

SRC="${SRC:-1}"

"${ROOT}/bin/stop.sh"
sleep 1
log "switch → source index ${SRC} profile ${FILTER_PROFILE}"
if [[ -n "${RUN_ENCODE_ONLY:-}" || "${VARIANT}" == "encode-only" || "${VARIANT}" == "record" ]]; then
  exec "${ROOT}/bin/run-encode-only.sh" "${SRC}"
fi

exec "${ROOT}/bin/run.sh" "${SRC}"