setup

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'
LANG=C

# shellcheck source=./shellib/shellib.sh
. "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")/shellib/shellib.sh"

function setup_hook() {
    local hook="$1"
    local script="scripts/${2:-$1}"

    if [ -L ".git/hooks/$hook" ] && [ "$(readlink .git/hooks/"$hook")" == "../../$script" ]; then
        info "$1 hook is installed"
    else
        if [ ! -f ".git/hooks/$hook" ]; then
            if ln -s "../../$script" ".git/hooks/$hook"; then
                info "$hook hook has been installed" "$symbol_done"
            else
                err "$hook hook installation failed, cannot create symbolic link" "$symbol_failed"
                return "$status_err"
            fi
        else
            err "$hook cannot be installed" "$symbol_failed"
            info "Try to remove '.git/hooks/$hook' first" "$symbol_tip"
            return "$status_err"
        fi
    fi
}

function setup() {
    # Install pre-commit for commit-msg hook
    if pre-commit install -t commit-msg 1>/dev/null; then
        info 'commit-msg hook is installed'
    else
        err 'commit-msg hook installation failed'
        return "$status_err"
    fi

    REPO_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && git rev-parse --show-toplevel)"

    pushd "$REPO_DIR" 1>/dev/null

    # Setup git hooks
    if ! setup_hook 'pre-commit' ||
        ! setup_hook 'pre-merge-commit' 'pre-commit' ||
        ! setup_hook 'pre-push'; then
        return "$status_err"
    fi

    popd 1>/dev/null

    # Check if GL_TOKEN is set
    if [ -z "${GL_TOKEN:-}" ]; then
        notice 'environment variable GL_TOKEN is not set, pre-commit hook gitlab-ci-linter will be skipped'
        info 'You might set up environment variable GL_TOKEN' "$symbol_tip"
    else
        info 'GL_TOKEN is set'
    fi
}

# Main
function main() {
    if is_root; then
        err "Shouldn't be run as root"
        info 'Try again as non-root' "$symbol_tip"
        return "$status_err"
    else
        setup
    fi
}

# Skip execution under test
if [ "${BASH_SOURCE[0]}" == "${0}" ]; then
    main
fi