#!/bin/sh
set -e

usage() {
    echo "Usage: update-ports [quarterly|custom]"
    exit 1
}

[ $# -eq 1 ] || usage

BASEDIR=/usr/ports
REMOTE_QUARTERLY="https://github.com/freebsd/freebsd-ports.git"
REMOTE_CUSTOM="https://github.com/jantuomi/freebsd-ports-custom.git"

case "$1" in
quarterly)
    # Find the newest quarterly branch
    BRANCH=$(git ls-remote --heads "$REMOTE_QUARTERLY" | grep -oE 'refs/heads/[0-9]{4}Q[0-9]' | sort -t/ -k3 -V | tail -1 | sed 's|refs/heads/||')
    if [ -z "$BRANCH" ]; then
        echo "Error: Could not determine quarterly branch"
        exit 1
    fi

    # Check if already at this version
    VERSION_FILE="${BASEDIR}/quarterly/.version"
    if [ -f "$VERSION_FILE" ] && [ "$(cat "$VERSION_FILE")" = "$BRANCH" ]; then
        echo "Quarterly ports tree already at $BRANCH."
        exit 0
    fi

    echo "Downloading quarterly ports tree (branch: $BRANCH)..."
    TMPDIR="${BASEDIR}/.quarterly.new"
    rm -rf "$TMPDIR"
    mkdir -p "$TMPDIR"
    fetch -qo- "https://github.com/freebsd/freebsd-ports/archive/refs/heads/${BRANCH}.tar.gz" | tar -xf - -C "$TMPDIR" --strip-components=1
    echo "$BRANCH" > "$TMPDIR/.version"

    if [ -d "${BASEDIR}/quarterly" ]; then
        mv "${BASEDIR}/quarterly" "${BASEDIR}/.quarterly.old"
    fi
    mv "$TMPDIR" "${BASEDIR}/quarterly"
    rm -rf "${BASEDIR}/.quarterly.old" &
    echo "Done. Quarterly ports tree updated to $BRANCH."
    ;;
custom)
    # Clone or update
    if [ -d "${BASEDIR}/custom/.git" ]; then
        echo "Updating custom ports overlay..."
        git -C "${BASEDIR}/custom" fetch origin
        git -C "${BASEDIR}/custom" reset --hard origin/main
    else
        echo "Cloning custom ports overlay..."
        rm -rf "${BASEDIR}/custom"
        git clone "$REMOTE_CUSTOM" "${BASEDIR}/custom"
    fi
    echo "Done. Custom ports overlay updated."
    ;;
*)
    usage
    ;;
esac