#!/bin/bash

# POZOR: SKRIPT JE SKORAJ V CELOTI NAPISALA UMETNA INTELIGENCA!!!

set -euo pipefail
repo=$1 # git-dir
date=$2 # 2026-05-01
CUTOFF_TS=$(date -d "$date" +%s)

best_sha=""
best_ts=0

git --git-dir $repo cat-file --batch-all-objects --batch-check='%(objectname) %(objecttype)' |
awk '$2=="commit"{print $1}' |
while read -r sha; do
    ts=$(git --git-dir $repo show -s --format=%ct "$sha" 2>/dev/null || true)

    if [[ -n "$ts" && "$ts" -lt "$CUTOFF_TS" ]]; then
        echo "$ts $sha"
    fi
done |
sort -n |
tail -1 |
{
    read -r best_ts best_sha

    if [[ -z "${best_sha:-}" ]]; then
        echo "No commit found before $date" >&2
        exit 1
    fi

    git --git-dir $repo branch -f restored "$best_sha"

    echo "Created branch 'restored' at:"
    git --git-dir $repo show -s --format='%H %ci %s' restored
}