#!/usr/bin/env bash
# Sync full source from the private repo to the public Gitea repo (manual build + Proxmox scripts).
# Usage:
#   export GITEA_TOKEN='<token>'
#   ./proxmox/sync-public.sh --gitea-url https://gitea.example.com --owner org --repo myoffice-public --push
#
# Copies tracked git files (plus generates public README.md). Skips private CI, secrets, build junk.

set -euo pipefail

script_dir="$(cd "$(dirname "$0")" && pwd)"
repo_root="$(cd "$script_dir/.." && pwd)"
cd "$repo_root"

gitea_url="${GITEA_URL:-}"
owner="${GITEA_OWNER:-}"
repo="${GITEA_REPO:-myoffice-public}"
branch="${BRANCH:-master}"
token="${GITEA_TOKEN:-}"
work_dir="${WORK_DIR:-}"
do_push=false

usage() {
	echo "Usage: $0 --gitea-url URL --owner OWNER [--repo REPO] [--branch BRANCH] [--push]" >&2
	exit 1
}

while [[ $# -gt 0 ]]; do
	case "$1" in
		--gitea-url)
			gitea_url="$2"
			shift 2
			;;
		--owner)
			owner="$2"
			shift 2
			;;
		--repo)
			repo="$2"
			shift 2
			;;
		--branch)
			branch="$2"
			shift 2
			;;
		--work-dir)
			work_dir="$2"
			shift 2
			;;
		--push)
			do_push=true
			shift
			;;
		-h | --help)
			usage
			;;
		*)
			echo "Unknown argument: $1" >&2
			usage
			;;
	esac
done

if [[ -z "$gitea_url" || -z "$owner" ]]; then
	usage
fi

gitea_url="${gitea_url%/}"

if [[ -z "$work_dir" ]]; then
	work_dir="${TMPDIR:-/tmp}/myoffice-public-sync"
fi

# Paths never published (private CI, secrets, local junk).
should_skip() {
	local f="$1"
	case "$f" in
		.gitea | .gitea/*) return 0 ;;
		_Published | _Published/*) return 0 ;;
		myoffice-publish.tar.gz) return 0 ;;
		Docker/data | Docker/data/*) return 0 ;;
		.env | .env.* | env.local) return 0 ;;
		*.user | *.suo) return 0 ;;
		proxmox/README.public.md) return 0 ;; # baked into public README.md
		*) return 1 ;;
	esac
}

if [[ -n "$token" ]]; then
	host_part="${gitea_url#https://}"
	host_part="${host_part#http://}"
	if [[ "$gitea_url" == http://* ]]; then
		scheme=http
	else
		scheme=https
	fi
	remote="${scheme}://oauth2:${token}@${host_part}/${owner}/${repo}.git"
else
	remote="${gitea_url}/${owner}/${repo}.git"
	echo "No token — using remote as-is (SSH URL recommended): $remote"
fi

echo "-----------------------------------------------"
echo "Sync full source -> $owner/$repo ($branch)"
echo "WorkDir: $work_dir"
echo "-----------------------------------------------"

rm -rf "$work_dir"
mkdir -p "$work_dir"

if git clone --depth 1 --branch "$branch" "$remote" "$work_dir" 2>/dev/null; then
	:
else
	echo "Clone failed or empty repo — initializing new git repo..."
	git -C "$work_dir" init -b "$branch" 2>/dev/null || {
		git -C "$work_dir" init
		git -C "$work_dir" checkout -b "$branch" 2>/dev/null || true
	}
	git -C "$work_dir" remote remove origin 2>/dev/null || true
	git -C "$work_dir" remote add origin "$remote"
fi

find "$work_dir" -mindepth 1 -maxdepth 1 ! -name '.git' -exec rm -rf {} +

copied=0
skipped=0
while IFS= read -r -d '' f; do
	if should_skip "$f"; then
		skipped=$((skipped + 1))
		continue
	fi
	src="$repo_root/$f"
	if [[ ! -e "$src" ]]; then
		continue
	fi
	dest="$work_dir/$f"
	mkdir -p "$(dirname "$dest")"
	cp -a "$src" "$dest"
	copied=$((copied + 1))
done < <(git -C "$repo_root" ls-files -z)

echo "Copied $copied tracked files (skipped $skipped)."

repo_raw_base="${gitea_url}/${owner}/${repo}/raw/branch/${branch}"
readme_template="$script_dir/README.public.md"
if [[ ! -f "$readme_template" ]]; then
	echo "Missing $readme_template" >&2
	exit 1
fi
sed \
	-e "s|__GITEA_URL__|${gitea_url}|g" \
	-e "s|__GITEA_OWNER__|${owner}|g" \
	-e "s|__GITEA_REPO__|${repo}|g" \
	-e "s|__GITEA_BRANCH__|${branch}|g" \
	-e "s|__REPO_RAW_BASE__|${repo_raw_base}|g" \
	"$readme_template" >"$work_dir/README.md"
echo "Wrote public README.md"

# Drop private-only docs that confuse public consumers (optional keep docs/)
# Keep docs/ — useful for auth notes.

git -C "$work_dir" add -A
if [[ -z "$(git -C "$work_dir" status --porcelain)" ]]; then
	echo "No changes to commit."
else
	git -C "$work_dir" -c user.email='myoffice-sync@local' -c user.name='myoffice-sync' \
		commit -m "sync full source from private myoffice"
	echo "Committed public snapshot."
fi

if [[ "$do_push" == true ]]; then
	echo "Pushing to origin $branch..."
	git -C "$work_dir" push -u origin "HEAD:$branch"
	echo "Pushed."
else
	echo "Dry run (no push). Re-run with --push to publish."
	echo "Work tree left at: $work_dir"
fi

echo ""
echo "Proxmox one-liner:"
echo "  bash -c \"\$(curl -fsSL ${repo_raw_base}/proxmox/myoffice.sh)\""
echo ""