#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS
#=================================================

final_path=$(ynh_app_setting_get $app final_path)

#=================================================
# SPECIFIC GETTERS FOR TOML SHORT KEY
#=================================================

get__no_antenna() {
    if [[ $(iw_devices) == "" ]]
    then
        echo "value: true"
    else
        echo "value: false"
    fi
}

get__status() {
    local service_enabled=$(ynh_app_setting_get $app service_enabled)
    if systemctl is-active hostapd -q
    then
        if [ $service_enabled -eq 1 ]
        then
            cat << EOF
style: success
ask:
  en: |-
    Your Hotspot is running :)
EOF
        else
            cat << EOF
style: warning
ask:
  en: Your Hotspot is running, but it shouldn't !
EOF
        fi
    elif [ $service_enabled -eq 1 ]
    then
        cat << EOF
style: danger
ask:
  en: |-
    Your Hotspot is down ! Here are errors logged in the last 5 minutes
    \`\`\`
$(journalctl -u hostapd -n10 -o cat | sed 's/^/    /g')
    \`\`\`
EOF
    else
        cat << EOF
style: info
ask:
  en: Your Hotspot is down as expected.
EOF

    fi
}

get__wifi_device() {
    if [[ $(iw_devices) == "" ]]
    then
        echo "choices: []"
    else
        cat << EOF
choices:
EOF
        for device in $(iw_devices | sed "s/|/ /g")
        do
            echo "  $device: $device"
        done
    fi

    echo "value: '$(ynh_app_setting_get $app wifi_device)'"
}

get__array_settings() {
    local short_setting="${1%%__*}"
    local index="${1#*__}"
    IFS='|' read -a values <<< "$(ynh_app_setting_get $app $short_setting)"
    echo "value: \"${values[$(($index - 1))]:-}\""
}

#=================================================
# SPECIFIC VALIDATORS FOR TOML SHORT KEYS
#=================================================
is_unique() {
    local short_setting="$1"
    local short_setting__1="$1__1"
    local short_setting__2="$1__2"
    local short_setting__3="$1__3"
    if [[ "${!short_setting__1}" == "${!short_setting__2}" ]]
    then
        return 1
    elif [ "$multissid" -ge "3" ] && [[ "${!short_setting__1}" == "${!short_setting__3}" ]]
    then
        return 1
    elif [ "$multissid" -ge "3" ] && [[ "${!short_setting__2}" == "${!short_setting__3}" ]]
    then
        return 1
    fi
    return 0
}
validate__wifi_ssid() {
    local wifi_ssid_var="wifi_ssid__$1"
    if [ "$multissid" -ge "$1" ] && [[ -z "${!wifi_ssid_var}" ]]
    then
        echo 'SSID required'
    fi
    if ! is_unique wifi_ssid
    then
        echo 'All Wifi names must be unique'
    fi
}

validate__wifi_passphrase() {
    local wifi_secure_var="wifi_secure__$1"
    local wifi_passphrase_var="wifi_passphrase__$1"
    if [ "$multissid" -ge "$1" ] && [[ "${!wifi_secure_var}" == "1" ]] && [[ -z "${!wifi_passphrase_var}" ]]
    then
        echo 'In WPA2 secure mode, you need to provide a passphrase'
    fi
}

validate__ip4_nat_prefix() {
    local ip4_nat_prefix_var="ip4_nat_prefix__$1"
    if [ "$multissid" -ge "$1" ] && [[ -z "${!ip4_nat_prefix_var}" ]]
    then
        echo 'Private IPv4 nat prefix required'
    fi
    if ! is_unique ip4_nat_prefix
    then
        echo 'All IPv4 prefix must be unique'
    fi
}

validate__dns() {
    local dns_var="dns__$1"
    local ip6_net_var="dns__$1"
    if [ "$multissid" -ge "$1" ] && ! echo "${!dns_var}" | grep -q "\."
    then
        echo 'IPv4 DNS required'
    fi
    if [ "$multissid" -ge "$1" ] && [[ -n "${!ip6_net_var}" ]] && ! echo "${!dns_var}" | grep -q ":"
    then
        echo 'IPv6 DNS required'
    fi
}

validate__array_settings() {
    local short_setting="${1%%__*}"
    local index="${1#*__}"
    if type -t validate__$short_setting | grep -q '^function$' 2>/dev/null;
    then
        validate__$short_setting $index
    fi
}

#=================================================
# SPECIFIC SETTERS FOR TOML SHORT KEYS
#=================================================
set__array_settings() {
    local short_setting="${1%%__*}"
    local index="${1#*__}"
    local type="${types[$1]}"
    local value="${!1}"
    if [[ "$type" == "string" ]] && [ "$multissid" -lt "$index" ]
    then
        value=""
    fi
    local values="$(ynh_app_setting_get $app $short_setting | awk "BEGIN{FS=OFS=\"|\"} {\$${index}=\"${value}\"}"1)"
    ynh_app_setting_set --app=$app --key=$short_setting --value="$values"
    ynh_print_info --message="Configuration key '$short_setting' edited in app settings"
}


#=================================================
# OVERWRITING VALIDATE STEP 
#=================================================
ynh_app_config_validate() {
    _ynh_app_config_validate
}

#=================================================
# OVERWRITING APPLY STEP 
#=================================================
ynh_app_config_apply() {
    
    # Stop vpn client
    ynh_print_info --message="Stopping hotspot in order to edit files"
    /usr/local/bin/ynh-hotspot stop

    _ynh_app_config_apply
    
    # Start vpn client
    ynh_print_info --message="Starting hotspot service if needed"
    /usr/local/bin/ynh-hotspot start

}

ynh_app_config_run $1