#!/bin/bash
# LGSM command_mods_update.sh function
# Author: Daniel Gibbs
# Contributor: UltimateByte
# Website: https://gameservermanagers.com
# Description: Updates installed mods along with mods_list.sh and mods_core.sh.

local commandname="MODS"
local commandaction="Mods Update"
local function_selfname="$(basename $(readlink -f "${BASH_SOURCE[0]}"))"

check.sh
mods_core.sh

fn_print_header

echo "Update addons/mods"
echo "================================="
fn_mods_check_installed
fn_print_information_nl "${installedmodscount} addons/mods will be updated"
fn_script_log_info "${installedmodscount} mods or addons will be updated"
fn_mods_installed_list
echo ""
echo "Installed addons/mods"
echo "================================="
# Go through all available commands, get details and display them to the user
for ((ulindex=0; ulindex < ${#installedmodslist[@]}; ulindex++)); do
	# Current mod is the "ulindex" value of the array we're going through
	currentmod="${installedmodslist[ulindex]}"
	fn_mod_get_info
	# Display installed mods and the update policy
	if [ -z "${modkeepfiles}" ]; then
		# If modkeepfiles is not set for some reason, that's a problem
		fn_script_log_error "Couldn't find update policy for ${modprettyname}"
		fn_print_error_nl "Couldn't find update policy for ${modprettyname}"
		exitcode="1"
		core_exit.sh
	# If the mod won't get updated
	elif [ "${modkeepfiles}" == "NOUPDATE" ]; then
		echo -e " * \e[31m${modprettyname}${default} (won't be updated)"
	# If the mode is just overwritten
	elif [ "${modkeepfiles}" == "OVERWRITE" ]; then
		echo -e " * \e[1m${modprettyname}${default} (overwrite)"
	else
		echo -e " * ${yellow}${modprettyname}${default} (common custom files remain untouched)"
	fi
done

## Update
# List all installed mods and apply update
# Reset line value
installedmodsline="1"
while [ ${installedmodsline} -le ${installedmodscount} ]; do
	currentmod="$(sed "${installedmodsline}q;d" "${modsinstalledlist}")"
	if [ -n "${currentmod}" ]; then
		fn_mod_get_info
		# Don not update mod if the policy is set to "NOUPDATE"
		if [ "${modkeepfiles}" == "NOUPDATE" ]; then
			fn_print_info "${modprettyname} will not be updated to preserve custom files"
			fn_script_log_info "${modprettyname} will not be updated to preserve custom files"
		else
			echo ""
			fn_create_mods_dir
			fn_mods_clear_tmp_dir
			fn_mods_create_tmp_dir
			fn_mod_install_files
			fn_mod_lowercase
			fn_remove_cfg_files
			fn_mod_create_filelist
			fn_mod_copy_destination
			fn_mod_add_list
			fn_mod_tidy_files_list
			fn_mods_clear_tmp_dir
		fi
		((installedmodsline++))
	else
		fn_print_fail "No mod was selected"
		fn_script_log_fail "No mod was selected"
		exitcode="1"
		core_exit.sh
	fi
done
echo ""
fn_print_ok_nl "Mods update complete"
fn_script_log "Mods update complete"

# Prevents specific files being overwritten upon update (set by ${modkeepfiles})
# For that matter, remove cfg files after extraction before copying them to destination
fn_remove_cfg_files(){
	if [ "${modkeepfiles}" !=  "OVERWRITE" ]&&[ "${modkeepfiles}" != "NOUPDATE" ]; then
		fn_print_dots "Preventing overwriting of ${modprettyname} config files"
		fn_script_log "Preventing overwriting of ${modprettyname} config files"
		sleep 0.5
		# Count how many files there are to remove
		removefilesamount="$(echo "${modkeepfiles}" | awk -F ';' '{ print NF }')"
		# Test all subvalues of "modkeepfiles" using the ";" separator
		for ((removefilesindex=1; removefilesindex < ${removefilesamount}; removefilesindex++)); do
			# Put the current file we are looking for into a variable
			filetoremove="$( echo "${modkeepfiles}" | awk -F ';' -v x=${removefilesindex} '{ print $x }' )"
			# If it matches an existing file that have been extracted delete the file
			if [ -f "${extractdir}/${filetoremove}" ]||[ -d "${extractdir}/${filetoremove}" ]; then
				rm -r "${extractdir}/${filetoremove}"
				# Write the file path in a tmp file, to rebuild a full file list as it is rebuilt upon update
				if [ ! -f "${modsdir}/.removedfiles.tmp" ]; then
					touch "${modsdir}/.removedfiles.tmp"
				fi
					echo "${filetoremove}" >> "${modsdir}/.removedfiles.tmp"
			fi
		done
		fn_print_ok "Preventing overwriting of ${modprettyname} config files"
		sleep 0.5
	fi
}

core_exit.sh