#!/usr/bin/env bash
# Check if a newer version of the copier template is available.
# Runs as a post-checkout hook — informational only, never blocks.
# Override COPIER_CHECK_INTERVAL in .envrc (default: 900 = 15 min, script fallback: 86400 = 24h).
set -euo pipefail
# Skip file-level restores (arg 3 = 0); runs on branch switch, pull, rebase, clone
[[ "${3:-1}" == "0" ]] && exit 0
# Cooldown: throttle when called as a git hook (3 args); always run for manual poe invocation (0 args)
check_interval="${COPIER_CHECK_INTERVAL:-86400}"
cache_dir="/tmp"
cache_file="${cache_dir}/.copier-template-check-$(echo "$PWD" | (sha1sum 2>/dev/null || shasum) | cut -c1-8)"
if [[ $# -gt 0 && -f "$cache_file" ]]; then
last_check=$(stat -c %Y "$cache_file" 2>/dev/null || stat -f %m "$cache_file" 2>/dev/null || echo 0)
now=$(date +%s)
(( now - last_check < check_interval )) && exit 0
fi
answers=".copier-answers.yml"
[[ -f "$answers" ]] || exit 0
local_version=$(grep "^_commit:" "$answers" | sed "s/_commit: *//;s/^['\"]//;s/['\"]$//") || true
src_path=$(grep "^_src_path:" "$answers" | sed "s/_src_path: *//;s/^['\"]//;s/['\"]$//") || true
[[ -z "$local_version" || -z "$src_path" ]] && exit 0
# Only supports GitHub for now — silently exit for other providers
case "$src_path" in
gh:*|https://github.com/*) ;;
*) exit 0 ;;
esac
# Convert copier src_path to GitHub owner/repo
repo="${src_path#gh:}"
repo="${repo#https://github.com/}"
repo="${repo%.git}"
latest=$(curl -s --connect-timeout 3 --max-time 5 \
"https://api.github.com/repos/${repo}/releases/latest" \
| grep '"tag_name"' | sed 's/.*"tag_name": *"//;s/".*//') || true
[[ -z "$latest" ]] && exit 0
# Update cooldown cache after successful API check
touch "$cache_file"
if [[ "$local_version" != "$latest" ]]; then
cyan='\033[0;36m'; yellow='\033[1;33m'; dim='\033[2m'; bold='\033[1m'; reset='\033[0m'
# Write to /dev/tty to bypass output capture by hook runners (prek, gt).
# Falls back to stdout for non-interactive contexts (CI, scripts, tests).
out="/dev/stdout"
if (echo -n > /dev/tty) 2>/dev/null; then out="/dev/tty"; fi
echo "" > "$out"
echo -e " ${cyan}ℹ️ Template update available:${reset} ${dim}${local_version}${reset} ${bold}→${reset} ${yellow}${latest}${reset}" > "$out"
echo -e " ${dim}Run:${reset} poe update-template" > "$out"
echo "" > "$out"
fi
