package Mod::APIshareeio;
#
# SPDX-License-Identifier: AGPL-3.0-or-later
# Copyright (c) Rainer Gümpelein, TeilRad GmbH
#
#use lib qw(/var/www/copri-bike/shareeapp-sx/src);
#
use warnings;
use strict;
use Exporter;
our @ISA = qw (Exporter);

use POSIX;
use CGI;
use Apache2::Const -compile => qw(OK );
use JSON;
use Scalar::Util qw(looks_like_number);
use Config::General;

use Lib::Config;
use Mod::DBtank;
use Mod::Basework;
use Mod::Shareework;
use Mod::APIfunc;
use Data::Dumper;

sub handler {
 my ($r) = @_;
 my $q = new CGI;
 my $netloc = $q->url(-base=>1);
 $q->import_names('R');
 my $json = JSON->new->allow_nonref;
 my $cf = new Config;
 my $dbt = new DBtank;
 my $bw = new Basework;
 my $tk = new Shareework;

 my %varenv = $cf->envonline();
 my $oprefix = $dbt->{operator}->{$varenv{dbname}}->{oprefix};
 my $now_dt = strftime "%Y-%m-%d %H:%M:%S", localtime;
 my @keywords = $q->param;
 my $user_agent = $q->user_agent();
 my $aowner = 168;
 my $debug=1;
 my $api_file = "/var/www/copri4/shareeconf/apikeys.cfg";
 my $aconf = Config::General->new($api_file);
 my %apikeyconf = $aconf->getall;

 my %headers = map { $_ => $q->http($_) } $q->http();
 $bw->log("APIshareeio request:\n--> user-agent '$user_agent' ",$q,"");
 $bw->log("headers:",\%headers,"");

 #for my $header ( keys %headers ) {
 #    print "$header: $headers{$header}\n";
 #}

 print $q->header(-type => "application/json", -charset => "utf-8", -'Access-Control-Allow-Origin' => "*");

 open(FILE,">>$varenv{logdir}/APIshareeio.log") if($debug);
 print FILE "\n*** $now_dt user-agent: '$user_agent' to syshost: $varenv{syshost}\n" if($debug);
 print FILE "<=== DUMP query\n " . Dumper($q) . "\n" if($debug);
 print FILE "<=== DUMP postdata:\n " . Dumper($q->param('POSTDATA')) . "\n" if($debug);


 my $response = { 
	event => "",
	response_state => "Event doesn't match",
 };

 my $http_sharee_api_key = $headers{HTTP_SHAREE_API_KEY} || $R::HTTP_SHAREE_API_KEY || "";
 if(!$apikeyconf{shareeio}->{sharee_api_key} || !$http_sharee_api_key || $apikeyconf{shareeio}->{sharee_api_key} ne $http_sharee_api_key){
     $response->{response_state} = "Failure: access denied, api-key doesn't match";
     $bw->log("Failure: access denied, api-key doesn't match",$q,"");
     my $jrout = $json->pretty->encode({shareeio => $response});
     print $jrout;
     return Apache2::Const::OK;
     exit 0;
 }

  foreach(@keywords){
   if(length($_) > 40 || length($q->param($_)) > 400){
     $response->{response_state} = "Failure 9000: amount of characters in $_ exceeds";
     $bw->log("Failure 9000: amount of characters in $_ exceeds",$q,"");
     my $jrout = $json->pretty->encode({shareeio => $response});
     print $jrout;
     return Apache2::Const::OK;
     exit 0;
   }
 }


#sig booking_update
my $response_out = {};
$response_out = sig_booking_update($q,\%varenv,$response,$aowner);# sig json post

#sig json api
sub sig_booking_update {
 my $q = shift;
 my $varenv = shift;
 my $response = shift || {};
 my $aowner = shift || "";

 $q->import_names('R');
 my $dbt = new DBtank;
 my $apif = new APIfunc;
 my $dbh = "";
 my $debug=1;
 my $jrout = "seems to be not valid";

 #sig using POST JSON
 my $POSTDATA = $q->param('POSTDATA');

 #REST methode only used for easy testing
 if($R::request && $R::request eq "booking_update"){
   my $rentalId = $q->escapeHTML($R::rentalId) || "";
   my %POSTDATA_hash = (
    "event"=>"RENTAL_END",
    "data"=>{
        "bikeId"=>"test16b5-0522-43da-ab66-477744a731a3",
        "lockStatus"=>"locked",
        "rentalId"=>"$rentalId",
        "reservationState"=>"",
        "startTime"=>"2022-06-06T15:00:18.045Z",
        "endTime"=>"2022-06-06T15:01:43.118Z",
        "distance"=>1000
	}
   );
   $POSTDATA = encode_json(\%POSTDATA_hash);
    print FILE "<=== DUMP POSTDATA_hash:\n " . Dumper(\%POSTDATA_hash) . "\n" if($debug);
 }

 eval {
  my $response_in = {};
  $response_in = decode_json($POSTDATA) if($POSTDATA);

  $response->{event} = "$response_in->{event}";
  if($response_in->{event}){

   my $bikeId = $q->escapeHTML($response_in->{data}->{bikeId}) || "";#on push, bikeId is bike_id
   my $rentalId = $q->escapeHTML($response_in->{data}->{rentalId}) || "";

   my $rows = 0;
   my $booking_values = {};

   print FILE "event: $response_in->{event}\n" if($debug);

   if($response_in->{event} eq "BIKE_STATUS" || $response_in->{event} eq "BATTERY_CAPACITY"){
      	$response->{response_state} = "OK: $response_in->{event} methode not implemented, because we will get it just-in-time on requesting sig GET bikes";
   }
   if($response_in->{event} eq "RENTAL_START"){
      	$response->{response_state} = "OK: methode not implemented, because rental will be started by App and success returned by sig-connector";
   }
   elsif($response_in->{event} eq "RENTAL_END" || $response_in->{event} eq "RESERVATION_END" || ($response_in->{event} eq "SMARTLOCK" && $response_in->{data}->{lockStatus} eq "unlocked")){
    if($rentalId){

      my $ctpos = {};
      my $booking_pos = {
        table           => "contenttranspos",
        fetch           => "one",
        txt11         => "$rentalId",
        int10           => "IN::('2','3')",
	#ca_id           => "$authraw->{c_id}",#sig doesn't know uid
      };

      #only reserved alias requested rentals can be canceled
      $booking_pos->{int10} = 2 if($response_in->{event} eq "RESERVATION_END");

      $ctpos = $dbt->fetch_tablerecord($dbh,$booking_pos);

      my $distance = 0;
      $distance = $response_in->{data}->{distance} / 1000 if(looks_like_number($response_in->{data}->{distance}) && $response_in->{data}->{distance} > 0);
      $distance = sprintf('%.2f',$distance);
      if(ref($ctpos) eq "HASH" &&  $ctpos->{txt22} && $ctpos->{txt11}){
        my $sig_book = {
                bikeId => $ctpos->{txt22},
                rentalId => $ctpos->{txt11},
                reservationId => "",
		distance => $distance,
                };

	my $authraw = { c_id => "" };
	$authraw->{c_id} = $ctpos->{ca_id} if($ctpos->{ca_id});
	$q->param(-name=>'bike',-value=>"$ctpos->{ct_name}") if($ctpos->{ct_name});
	$q->param(-name=>'state',-value=>"canceled") if($response_in->{event} eq "RESERVATION_END");

	if($response_in->{event} eq "SMARTLOCK" && $response_in->{data}->{lockStatus} eq "unlocked"){
	  $q->param(-name=>'lock_state',-value=>"unlocked");
	}
       	if($response_in->{event} eq "RENTAL_END"){
	  $q->param(-name=>'state',-value=>"available");
	  $q->param(-name=>'lock_state',-value=>"locked");
	  #addition state in context to get state=returned for miniquery
	  $sig_book->{station_lock_state} = "3";#set int28 to 3
	}

      	($rows, $booking_values) = $apif->booking_update($q,$varenv,$authraw,$aowner,$sig_book) if($authraw->{c_id});

	#response is for sig json after rental-end
	$booking_values->{bikeId} = $sig_book->{bikeId};
	$booking_values->{rentalId} = $sig_book->{rentalId};
	delete $booking_values->{geo_distance};
	delete $booking_values->{co2saving};
	delete $booking_values->{bike};
	delete $booking_values->{response_text};
	delete $booking_values->{user_miniquery};
	$response->{response_state} = "OK: event matched, but something seems to goes wrong on booking_update" if(!$booking_values->{response_state});
      	$response = {%$response, %$booking_values};
      }else{
      	$response->{response_state} = "Failure: $response_in->{event} : there is no reservation OR rental with rentalID=$rentalId";
      }

     }else{
       $response->{response_state} = "Failure: no rentalId defined";
     }
   }#end RENTAL_END

  }#end event

 };#end eval
 if ($@){
  print FILE "failure! can not decode POST json, POSTDATA:\n" . Dumper($q->param('POSTDATA')) . "\n" if($debug);
  #warn $@;
  print FILE "warn:" . $@ . "\n" if($debug);
  $response->{response_state} = "Failure: can not decode POST json";
 }
 return $response;
}#end sig json booking_update


 #end RESTful ------------------------------------------------------------
 #FINAL JSON response OUTPUT ----------------------------------------------------------
 my $jrout = $json->pretty->encode({shareeio => $response_out});
 print $jrout;

 print FILE "APIshareeio jrout:\n" . Dumper($jrout) . "\n" if($debug);
 $bw->log("APIshareeio response by $user_agent mapped aowner:$aowner",$jrout,"");
 #end JSON ----------------------------------------------------------------------------

 close(FILE) if($debug);
 return Apache2::Const::OK;
}#end handler
1;