#!/bin/sh /etc/rc.common

# Copyright AllSeen Alliance. All rights reserved.
#
#    Permission to use, copy, modify, and/or distribute this software for any
#    purpose with or without fee is hereby granted, provided that the above
#    copyright notice and this permission notice appear in all copies.
#
#    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
#    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
#    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
#    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
#    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
#    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
#    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#

. /usr/sbin/wifi_mgmt

START=66
SERVICE_DAEMONIZE=1
SERVICE_WRITE_PID=1
CONFIGFILE=/etc/alljoyn-onboarding/OnboardingService.conf
FACTORYCONFIGFILE=/etc/alljoyn-onboarding/FactoryOnboardingService.conf

EXTRA_COMMANDS="state error connect softap offboard configure validate reset retry poll_connection"
EXTRA_HELP=<<EOF
    state             Get onboarding state
    error             Get onboarding error
    connect           Connect to AP with provided configuration
    softap            Disconnect from AP and enable soft AP
    offboard          softap + wipe configuration
    configure         Configure device with personal AP credentials
    validate          Validate the provided configuration
    reset             Reset the radio
    retry             Enter SoftAP mode temporarily to allow reconfig
    poll_connection   Poll the status of the connection
EOF

STATE_NOTCONFIGURED=0
STATE_CONFIGURED=1
STATE_VALIDATING=2
STATE_VALIDATED=3
STATE_ERROR=4
STATE_RETRY=5

boot() {
    local obswifi=$(uci get network.obswifi)
    if [ -z "$obswifi" ]; then
        uci set network.obswifi=interface
        uci set network.obswifi.proto=dhcp
        uci commit network
        /etc/init.d/network reload
    fi

    start
}

start() {
    cache_state
    cache_error
    connect
    service_start /usr/bin/onboarding-daemon --config-file=$CONFIGFILE --factory-config-file=$FACTORYCONFIGFILE
}

stop() {
    service_stop /usr/bin/onboarding-daemon
}

state() {
    return $(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].state)
}

error() {
    return $(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].lasterrorcode)
}

connect() {
    local state="$(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].state)"

    if [ ${state} -eq $STATE_NOTCONFIGURED ]; then
        return
    fi

    if [ ${state} -eq $STATE_CONFIGURED ] || [ ${state} -eq $STATE_ERROR ]; then
        validate
        return
    fi

    if [ ${state} -eq $STATE_VALIDATING ]; then
        retries=2
    else
        retries=$(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].connect_retry_max)
    fi

    local status=$ERROR_NONE
    while [ $retries -gt 0 ]; do
        wifi_connect
        sleep 2
        wifi_connect_status
        status=$?
        echo "status: $status"
        if [ ${status} -eq $ERROR_NONE ]; then
            set_state $STATE_VALIDATED
            return $status
        else
            retries=$((--retries))
        fi
    done

    if [ ${state} -eq $STATE_VALIDATED ] || [ ${state} -eq $STATE_RETRY ]; then
        if [ $(ps -w | grep "/etc/init.d/alljoyn-onboarding retry" | grep -v "grep" | wc -l) -eq 0 ]; then
            /etc/init.d/alljoyn-onboarding retry &
            status=$((status+8))  # set a bit saying we are in retry
        fi
    elif [ ${state} -eq ${STATE_VALIDATING} ]; then
        set_state $STATE_ERROR
        softap
    fi

    return $status
}

offboard() {
    set_state $STATE_NOTCONFIGURED
    softap

    uci delete alljoyn-onboarding.@onboarding[0].ssid

    local enc=$(uci get alljoyn-onboarding.@onboarding[0].encryption)
    if [ $enc == "wep" ]; then
        local index=$(uci get alljoyn-onboarding.@onboarding[0].key)
        uci delete alljoyn-onboarding.@onboarding[0].key$index
    fi

    uci delete alljoyn-onboarding.@onboarding[0].encryption
    uci delete alljoyn-onboarding.@onboarding[0].key

    uci commit alljoyn-onboarding

    set_error $ERROR_NONE "Unconfigured"
}

softap() {
    wifi_softap
}

reset() {
    wifi_reset
}

retry() {
    echo "STATE_RETRY"
    set_state $STATE_RETRY
    local retry_duration="$(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].config_retry_duration)"
    softap
    sleep $retry_duration
    local state="$(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].state)"
    if [ ${state} -eq $STATE_RETRY ]; then
        /etc/init.d/alljoyn-onboarding connect &
    fi
}

configure() {
    local codeoption="-p"
    if [ "$2" = "WEP" ]; then
        codeoption="-k"
    fi
    wifi_configure -s "$1" -a "$2" $codeoption "$3"
    set_state $STATE_CONFIGURED
}

validate() {
    set_state $STATE_VALIDATING
    connect
}

set_state() {
    uci set -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].state=$1
    uci commit -c /etc/alljoyn-onboarding alljoyn-onboarding-state
    cache_state $1
}

cache_state(){
    local state="$(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].state)"
    printf '%d\n' "$state" > /tmp/state/alljoyn-onboarding
}

cache_error() {
    local code=$(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].lasterrorcode)
    local msg=$(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].lasterrormsg)
    printf '%s\n%s' "$code" "$msg" > /tmp/state/alljoyn-onboarding-lasterror
}

poll_connection() {
    local state="$(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].state)"
    if [ ${state} -eq $STATE_VALIDATED ]; then
        wifi_connect_status
        local status=$?
        if [ ${status} -ne $ERROR_NONE ]; then
            ## check state again in case it changed since last get
            state="$(uci get -c /etc/alljoyn-onboarding alljoyn-onboarding-state.@onboarding[0].state)"
            if [ ${state} -ne $STATE_VALIDATED ]; then
                return
            fi
            /etc/init.d/alljoyn-onboarding connect &
        fi
    fi
}