#!/usr/bin/env bash

set -o errexit
set -o nounset
set -o pipefail

CONFIG_ROOT="${XDG_CONFIG_HOME:-null}"

if [[ "${CONFIG_ROOT}" == "null" ]]; then
    CONFIG_ROOT="${HOME}/.config"
fi

ROOT_DIR="$( cd "$( dirname $0 )/.." && pwd )"
NEOVIM_CONFIG_SOURCE_DIR="${ROOT_DIR}/nvim"
NEOVIM_CONFIG_DESTINATION_DIR="${CONFIG_ROOT}/nvim"
VERSION="$( git describe --tags | tr -d '\n' )"
PROJECT_NAME="nvim.d"
CODEFLOW_GROUP="linux-home"

action="$1"

function backup {
    if [ -d "${NEOVIM_CONFIG_DESTINATION_DIR}" ]; then
        echo "[INFO] backing up existing config..."
        TIMESTAMP=$( date +"%Y.%m.%dT%H.%M.%S" )
        BACKUP_DIR="${ROOT_DIR}/backup"
        mkdir -p "${BACKUP_DIR}"
        cd "${NEOVIM_CONFIG_DESTINATION_DIR}"
        tar czf "${BACKUP_DIR}/neovim-config-${TIMESTAMP}.tar.gz" .
    fi
}

function clean {
    rm -f "${NEOVIM_CONFIG_DESTINATION_DIR}/init.lua"
    find "${NEOVIM_CONFIG_DESTINATION_DIR}" -maxdepth 1 -mindepth 1 -type d -not -iwholename "*/plugin" | xargs rm -rf
}

function install {
    mkdir -p "${NEOVIM_CONFIG_DESTINATION_DIR}"
    
    # Syncing the neovim configuration files
    echo "[INFO] Syncing ${NEOVIM_CONFIG_SOURCE_DIR} to ${NEOVIM_CONFIG_DESTINATION_DIR}..."
    rsync -avh "${NEOVIM_CONFIG_SOURCE_DIR}/" "${NEOVIM_CONFIG_DESTINATION_DIR}"
    chmod a-rwx,u+rwx "${NEOVIM_CONFIG_DESTINATION_DIR}"
    
    # Ensuring the state directories are present
    mkdir -p ${XDG_STATE_HOME}/nvim/{backup,swap,undo,view} ${XDG_STATE_HOME}/logs/nvim ${XDG_DATA_HOME}/nvim/spell
    chmod 0700 ${XDG_STATE_HOME}/nvim/{backup,swap,undo,view} ${XDG_STATE_HOME}/logs/nvim ${XDG_DATA_HOME}/nvim/spell
}

function package {
    cd "${ROOT_DIR}"

    if ! [ -d "${ROOT_DIR}/build" ]; then
        mkdir "${ROOT_DIR}/build"
    fi

    tar czv -f "${ROOT_DIR}/build/${PROJECT_NAME}-${VERSION}.tar.gz" $( basename "${NEOVIM_CONFIG_SOURCE_DIR}" )
}

function publish {
    curl --request PUT \
         --user ${CODEFLOW_USERNAME}:${CODEFLOW_TOKEN} \
         --upload-file build/${PROJECT_NAME}-${VERSION}.tar.gz \
         https://codeflow.dananglin.me.uk/api/packages/${CODEFLOW_GROUP}/generic/${PROJECT_NAME}/${VERSION}/${PROJECT_NAME}-${VERSION}.tar.gz
}

case ${action} in
    backup)
        backup
        ;;
    clean)
        clean
        ;;
    install)
        install
        ;;
    package)
        package
        ;;
    publish)
        publish
        ;;
    *)
        echo "ERROR: Unknown action ${action}"
        exit 1
        ;;
esac