#!/usr/bin/env bash
# Install / refresh the per-repo backup shim in every Gitea repo.
# Idempotent: safe to run anytime, including via cron.
# Usage: ./install-hooks.sh [--quiet]

set -euo pipefail

GITEA_REPOS="/home/ubuntu/gitea/data/gitea-repositories"
SHIM_NAME="zzz-backup"
QUIET=0
[[ "${1:-}" == "--quiet" ]] && QUIET=1

shim_content='#!/usr/bin/env bash
exec /home/ubuntu/gitea-backups/bin/backup.sh
'

installed=0
already=0
for repo in "$GITEA_REPOS"/*/*.git; do
    [[ -d "$repo" ]] || continue
    hook_dir="$repo/hooks/post-receive.d"
    mkdir -p "$hook_dir"
    shim="$hook_dir/$SHIM_NAME"
    if [[ -f "$shim" ]] && diff -q <(printf '%s' "$shim_content") "$shim" >/dev/null 2>&1; then
        already=$((already + 1))
    else
        printf '%s' "$shim_content" > "$shim"
        chmod +x "$shim"
        installed=$((installed + 1))
        [[ $QUIET -eq 0 ]] && echo "installed: $repo"
    fi
done

[[ $QUIET -eq 0 ]] && echo "done — installed/updated: $installed, already-current: $already"
exit 0