# put all utility functions here

# make a temporary file
git_extra_mktemp() {
    mktemp -t "$(basename "$0")".XXXXXXX
}

# Determine the default branch name
#
# The detection follows this order:
# 1. Check explicit config 'git-extras.default-branch'
# 2. Remote HEAD auto-detection
# 3. Check git's default branch config 'init.defaultBranch' config
# 4. Common branch detection - Checks if main, master, trunk, default, development, stable, release, prod, production exist locally
# 5. Fallback to 'main' as last resort
git_extra_default_branch() {
    local extras_default_branch init_default_branch remote_default_branch remote_name

    # heck git-extras specific config
    extras_default_branch=$(git config --get git-extras.default-branch)
    if [ -n "$extras_default_branch" ]; then
        echo "$extras_default_branch"
        return
    fi

    # Auto-detect from remote HEAD
    # First, try to get a list of remotes
    local remotes
    remotes=$(git remote 2>/dev/null)
    if [ -n "$remotes" ]; then
        # Try 'origin' first, then use the first available remote
        for remote_name in origin $remotes; do
            remote_default_branch=$(git rev-parse --abbrev-ref "$remote_name/HEAD" 2>/dev/null)
            if [ -n "$remote_default_branch" ] && [ "$remote_default_branch" != "$remote_name/HEAD" ]; then
                # Strip the remote name prefix (e.g., "origin/master" -> "master")
                echo "${remote_default_branch#*/}"
                return
            fi
        done
    fi

    # Check init.defaultBranch config
    init_default_branch=$(git config --get init.defaultBranch)
    if [ -n "$init_default_branch" ]; then
        echo "$init_default_branch"
        return
    fi

    # Check if common default branches exist locally
    local common_branches="main master trunk default development stable release prod production"
    for branch in $common_branches; do
        if git show-ref --verify --quiet "refs/heads/$branch"; then
            echo "$branch"
            return
        fi
    done

    # Final fallback
    echo "main"
}