#!/usr/bin/env bash

set -eoux pipefail

BLING_CLI_DIRECTORY="/usr/share/ublue-os/bling"

BLING_SCRIPT_SOURCE=""
TARGET_CONFIG_FILE=""
shell="$(basename "${SHELL}")"
case "${shell}" in
    "fish")
        BLING_SCRIPT_SOURCE="bling.fish"
        TARGET_CONFIG_FILE="${XDG_CONFIG_HOME:-$HOME/.config}/fish/config.fish"
    ;;
    "zsh")
        BLING_SCRIPT_SOURCE="bling.sh"
        TARGET_CONFIG_FILE="${ZDOTDIR:-$HOME}/.zshrc"
    ;;
    "bash")
        BLING_SCRIPT_SOURCE="bling.sh"
        TARGET_CONFIG_FILE="${HOME}/.bashrc"
    ;;
    *)
        echo 'Unknown shell. You are on your own.'
        exit 1
    ;;
esac

function is-bling-installed() {
    echo "hello"
    [ -f "$TARGET_CONFIG_FILE" ] || return 1

    if [ -n "$(grep -n "source $BLING_CLI_DIRECTORY/$BLING_SCRIPT_SOURCE" "$TARGET_CONFIG_FILE" | grep -Eo '^[^:]+')" ]; then
        return 0
    fi
    return 1
}

[ -f "${BLING_ENV_SCRIPT:-/usr/share/ublue-os/bling/env.sh}" ] && . "${BLING_ENV_SCRIPT:-/usr/share/ublue-os/bling/env.sh}"

BLING_MESSAGE_ENABLE="${BLING_MESSAGE_ENABLE:-Enable bling for ${shell}?}"
BLING_MESSAGE_DISABLE="${BLING_MESSAGE_DISABLE:-Disable bling for ${shell}?}"

if is-bling-installed "${shell}" ; then
    gum confirm "${BLING_MESSAGE_DISABLE}"
    if ! sed -i "/### ${BLING_SCRIPT_SOURCE} source start/,/### ${BLING_SCRIPT_SOURCE} source end/d" "${TARGET_CONFIG_FILE}" ; then
        sed -i "$(grep -n "source ${BLING_SCRIPT_SOURCE}" "${TARGET_CONFIG_FILE}" | grep -Eo '^[^:]+')"d "${HOME}/.bashrc"
    fi
    echo "Bling removed. Reopen your terminal so that the configurations may be removed"
else
    gum confirm "${BLING_MESSAGE_ENABLE}" --affirmative="Bling me up!" --negative "No, I'm boring"
    echo "Adding bling to your $(basename "${TARGET_CONFIG_FILE}")"
    cat<<EOF >> "${TARGET_CONFIG_FILE}"
### ${BLING_SCRIPT_SOURCE} source start
test -f ${BLING_CLI_DIRECTORY}/${BLING_SCRIPT_SOURCE} && source ${BLING_CLI_DIRECTORY}/${BLING_SCRIPT_SOURCE}
### ${BLING_SCRIPT_SOURCE} source end
EOF
    echo "Installation complete. Reopen your terminal so that the configurations may be applied"
fi