#!/usr/bin/env bash

set -euo pipefail

if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
  echo "Usage: bash scripts/trigger-gitea-pipeline.sh [remote] [branch]"
  echo ""
  echo "Examples:"
  echo "  bash scripts/trigger-gitea-pipeline.sh"
  echo "  bash scripts/trigger-gitea-pipeline.sh gitea main"
  echo "  bash scripts/trigger-gitea-pipeline.sh origin main"
  exit 0
fi

resolve_default_remote() {
  if git remote get-url gitea >/dev/null 2>&1; then
    echo "gitea"
    return 0
  fi

  if git remote get-url origin >/dev/null 2>&1; then
    echo "origin"
    return 0
  fi

  return 1
}

REMOTE="${1:-}"
BRANCH="${2:-main}"

if ! git rev-parse --git-dir >/dev/null 2>&1; then
  echo "[ERROR] Current directory is not a git repository."
  exit 1
fi

if [[ -z "$REMOTE" ]]; then
  if ! REMOTE="$(resolve_default_remote)"; then
    echo "[ERROR] No default remote found. Expected 'gitea' or 'origin'."
    echo "Available remotes:"
    git remote -v || true
    exit 1
  fi
fi

if ! git remote get-url "$REMOTE" >/dev/null 2>&1; then
  echo "[ERROR] Remote '$REMOTE' does not exist."
  echo "Available remotes:"
  git remote -v
  exit 1
fi

HEAD_SHA="$(git rev-parse --short HEAD)"

echo "[INFO] HEAD: ${HEAD_SHA}"
echo "[INFO] Force-push HEAD to remote branch '${BRANCH}'"
git push "$REMOTE" "HEAD:refs/heads/${BRANCH}" --force

echo "[INFO] Verify remote branch reference"
git ls-remote "$REMOTE" "refs/heads/${BRANCH}"

echo "[DONE] Pipeline trigger request sent by updating branch '${BRANCH}'."