#!/bin/sh
# mirror-from [REPO_NAME] [GIT_URL]
# Configures a repo to pull updates from a remote git URL hourly.
# Pass empty URL to remove the mirror source.
# Example: mirror-from myrepo https://github.com/user/myrepo.git
if [ -z "$1" ]; then
    echo "Usage: mirror-from [REPO_NAME] [GIT_URL]"
    echo "       mirror-from [REPO_NAME]           - remove mirror source"
    exit 1
fi
if [ ! -d "$1.git" ]; then
    echo "Repository $1 does not exist"
    exit 1
fi

REPO="$1"
REMOTE="$2"
REPO_PATH="$HOME/$REPO.git"

cd "$REPO_PATH" || exit 1

if [ -z "$REMOTE" ]; then
    if git remote get-url mirror-from >/dev/null 2>&1; then
        git remote remove mirror-from
        echo "Removed mirror source for $REPO"
    else
        echo "No mirror source configured for $REPO"
    fi
    exit 0
fi

if git remote get-url mirror-to >/dev/null 2>&1; then
    echo "Error: $REPO already has a mirror-to configured. Remove it first with: mirror-to $REPO"
    exit 1
fi

if git remote get-url mirror-from >/dev/null 2>&1; then
    git remote set-url mirror-from "$REMOTE"
else
    git remote add mirror-from "$REMOTE"
fi

echo "Configured $REPO to mirror from $REMOTE"
echo "Mirrors run hourly. Logs: /var/log/git-mirrors.log"