#!/usr/bin/env bash
# Point git origin at Forgejo Submatter (local dev machine or CT 116 production host).
#
# Usage:
#   bash scripts/migrate-origin-to-forgejo.sh
#   FORGEJO_REPO_URL=https://forgejo.stillwell.cloud/rstillwell/Submatter.git bash scripts/migrate-origin-to-forgejo.sh
#
# On CT 116:
#   ssh root@192.168.68.116 'cd /opt/submatter && bash scripts/migrate-origin-to-forgejo.sh'
set -euo pipefail

repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$repo_root"

forgejo_url="${FORGEJO_REPO_URL:-https://forgejo.stillwell.cloud/rstillwell/Submatter.git}"
branch="${DEPLOY_BRANCH:-main}"

if [[ ! -d .git ]]; then
  echo "[migrate-origin] ERROR: not a git repo: ${repo_root}" >&2
  exit 1
fi

old_url="$(git remote get-url origin 2>/dev/null || true)"
if [[ -n "$old_url" && "$old_url" != "$forgejo_url" ]]; then
  echo "[migrate-origin] renaming old origin → github (was ${old_url})"
  git remote rename origin github 2>/dev/null || true
  if ! git remote get-url forgejo &>/dev/null; then
    git remote add forgejo "$old_url"
  fi
fi

if git remote get-url origin &>/dev/null; then
  git remote set-url origin "$forgejo_url"
else
  git remote add origin "$forgejo_url"
fi

echo "[migrate-origin] origin → ${forgejo_url}"
git remote -v

echo "[migrate-origin] fetching ${branch}..."
git fetch origin "$branch" || {
  echo "[migrate-origin] WARN: fetch failed — check Forgejo credentials (git config credential.helper)" >&2
  exit 1
}

current_branch="$(git branch --show-current 2>/dev/null || true)"
if [[ "$current_branch" != "$branch" ]]; then
  git checkout "$branch" 2>/dev/null || git checkout -b "$branch" "origin/${branch}"
fi

echo "[migrate-origin] done. HEAD=$(git rev-parse --short HEAD)"