=begin comment

Swagger Petstore

This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\

OpenAPI spec version: 1.0.0
Contact: apiteam@swagger.io
Generated by: https://github.com/swagger-api/swagger-codegen.git

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

=end comment

=cut

#
# NOTE: This class is auto generated by the swagger code generator program. 
# Do not edit the class manually.
# Ref: https://github.com/swagger-api/swagger-codegen
#
package WWW::SwaggerClient::ApiClient;

use strict;
use warnings;
use utf8;

use MIME::Base64;
use LWP::UserAgent;
use HTTP::Headers;
use HTTP::Response;
use HTTP::Request::Common qw(DELETE POST GET HEAD PUT);
use HTTP::Status;
use URI::Query;
use JSON;
use URI::Escape;
use Scalar::Util;
use Log::Any qw($log);
use Carp;
use Module::Runtime qw(use_module);

use WWW::SwaggerClient::Configuration;

use base 'Class::Singleton';

sub _new_instance
{
    my $class = shift;
    my (%args) = (
        'ua' => LWP::UserAgent->new,
        'base_url' => 'http://petstore.swagger.io/v2',
        @_
    );
  
    return bless \%args, $class;
}

sub _cfg {'WWW::SwaggerClient::Configuration'}

# Set the user agent of the API client
#
# @param string $user_agent The user agent of the API client
#
sub set_user_agent {
    my ($self, $user_agent) = @_;
    $self->{http_user_agent}= $user_agent;
}

# Set timeout
#
# @param integer $seconds Number of seconds before timing out [set to 0 for no timeout]
# 
sub set_timeout {
    my ($self, $seconds) = @_;
    if (!looks_like_number($seconds)) {
        croak('Timeout variable must be numeric.');
    }
    $self->{http_timeout} = $seconds;
}

# make the HTTP request
# @param string $resourcePath path to method endpoint
# @param string $method method to call
# @param array $queryParams parameters to be place in query URL
# @param array $postData parameters to be placed in POST body
# @param array $headerParams parameters to be place in request header
# @return mixed
sub call_api {
    my $self = shift;
    my ($resource_path, $method, $query_params, $post_params, $header_params, $body_data, $auth_settings) = @_;
  
    # update parameters based on authentication settings
    $self->update_params_for_auth($header_params, $query_params, $auth_settings); 
  
  
    my $_url = $self->{base_url} . $resource_path;
  
    # build query 
    if (%$query_params) {
        $_url = ($_url . '?' . eval { URI::Query->new($query_params)->stringify });
    }
  
  
    # body data
    $body_data = to_json($body_data->to_hash) if defined $body_data && $body_data->can('to_hash'); # model to json string
    my $_body_data = %$post_params ? $post_params : $body_data;
  
    # Make the HTTP request
    my $_request;
    if ($method eq 'POST') {
        # multipart
        $header_params->{'Content-Type'} = lc $header_params->{'Content-Type'} eq 'multipart/form' ? 
            'form-data' : $header_params->{'Content-Type'};
        
        $_request = POST($_url, %$header_params, Content => $_body_data);
  
    }
    elsif ($method eq 'PUT') {
        # multipart
        $header_params->{'Content-Type'}  = lc $header_params->{'Content-Type'} eq 'multipart/form' ? 
            'form-data' : $header_params->{'Content-Type'};
  
        $_request = PUT($_url, %$header_params, Content => $_body_data);
  
    }
    elsif ($method eq 'GET') {
        my $headers = HTTP::Headers->new(%$header_params);
        $_request = GET($_url, %$header_params);
    }
    elsif ($method eq 'HEAD') {
        my $headers = HTTP::Headers->new(%$header_params);
        $_request = HEAD($_url,%$header_params); 
    }
    elsif ($method eq 'DELETE') { #TODO support form data
        my $headers = HTTP::Headers->new(%$header_params);
        $_request = DELETE($_url, %$headers);
    }
    elsif ($method eq 'PATCH') { #TODO
    }
    else {
    }
   
    $self->{ua}->timeout($self->{http_timeout} || $WWW::SwaggerClient::Configuration::http_timeout); 
    $self->{ua}->agent($self->{http_user_agent} || $WWW::SwaggerClient::Configuration::http_user_agent);
    
    $log->debugf("REQUEST: %s", $_request->as_string);
    my $_response = $self->{ua}->request($_request);
    $log->debugf("RESPONSE: %s", $_response->as_string);
  
    unless ($_response->is_success) {
        croak(sprintf "API Exception(%s): %s\n%s", $_response->code, $_response->message, $_response->content);
    }
       
    return $_response->content;
  
}

#  Take value and turn it into a string suitable for inclusion in
#  the path, by url-encoding.
#  @param string $value a string which will be part of the path
#  @return string the serialized object
sub to_path_value {
    my ($self, $value) = @_;
    return uri_escape($self->to_string($value));
}


# Take value and turn it into a string suitable for inclusion in
# the query, by imploding comma-separated if it's an object.
# If it's a string, pass through unchanged. It will be url-encoded
# later.
# @param object $object an object to be serialized to a string
# @return string the serialized object
sub to_query_value {
      my ($self, $object) = @_;
      if (ref($object) eq 'ARRAY') {
          return join(',', @$object);
      } else {
          return $self->to_string($object);
      }
}


# Take value and turn it into a string suitable for inclusion in
# the header. If it's a string, pass through unchanged
# If it's a datetime object, format it in ISO8601
# @param string $value a string which will be part of the header
# @return string the header string
sub to_header_value {
    my ($self, $value) = @_;
    return $self->to_string($value);
}

# Take value and turn it into a string suitable for inclusion in
# the http body (form parameter). If it's a string, pass through unchanged
# If it's a datetime object, format it in ISO8601
# @param string $value the value of the form parameter
# @return string the form string
sub to_form_value {
    my ($self, $value) = @_;
    return $self->to_string($value);
}

# Take value and turn it into a string suitable for inclusion in
# the parameter. If it's a string, pass through unchanged
# If it's a datetime object, format it in ISO8601
# @param string $value the value of the parameter
# @return string the header string
sub to_string {
    my ($self, $value) = @_;
    if (ref($value) eq "DateTime") { # datetime in ISO8601 format
        return $value->datetime();
    }
    else {
        return $value;
    }
}

# Deserialize a JSON string into an object
#  
# @param string $class class name is passed as a string
# @param string $data data of the body
# @return object an instance of $class
sub deserialize
{
    my ($self, $class, $data) = @_;
    $log->debugf("deserializing %s for %s", $data, $class);
  
    if (not defined $data) {
        return undef;
    } elsif ( (substr($class, 0, 5)) eq 'HASH[') { #hash
        if ($class =~ /^HASH\[(.*),(.*)\]$/) {
            my ($key_type, $type) = ($1, $2);
            my %hash;
            my $decoded_data = decode_json $data;
            foreach my $key (keys %$decoded_data) {
                if (ref $decoded_data->{$key} eq 'HASH') {
                    $hash{$key} = $self->deserialize($type, encode_json $decoded_data->{$key});
                } else {
                    $hash{$key} = $self->deserialize($type, $decoded_data->{$key});
                }
            }
            return \%hash;
        } else {
          #TODO log error
        }
    
    } elsif ( (substr($class, 0, 6)) eq 'ARRAY[' ) { # array of data
        return $data if $data eq '[]'; # return if empty array
    
        my $_sub_class = substr($class, 6, -1);
        my $_json_data = decode_json $data;
        my @_values = ();
        foreach my $_value (@$_json_data) {
            if (ref $_value eq 'ARRAY') {
                push @_values, $self->deserialize($_sub_class, encode_json $_value);
            } else {
                push @_values, $self->deserialize($_sub_class, $_value);
            }
        }
        return \@_values;
    } elsif ($class eq 'DateTime') {
        return DateTime->from_epoch(epoch => str2time($data));
    } elsif (grep /^$class$/, ('string', 'int', 'float', 'bool', 'object')) {
        return $data;
    } else { # model
        my $_instance = use_module("WWW::SwaggerClient::Object::$class")->new;
        if (ref $data eq "HASH") {
            return $_instance->from_hash($data);
        } else { # string, need to json decode first
            return $_instance->from_hash(decode_json $data);
        }
    }
  
}

# return 'Accept' based on an array of accept provided
# @param [Array] header_accept_array Array fo 'Accept'
# @return String Accept (e.g. application/json)
sub select_header_accept
{
    my ($self, @header) = @_;
  
    if (@header == 0 || (@header == 1 && $header[0] eq '')) {
        return undef;
    } elsif (grep(/^application\/json$/i, @header)) {
        return 'application/json';
    } else {
        return join(',', @header);
    }
  
}

# return the content type based on an array of content-type provided
# @param [Array] content_type_array Array fo content-type
# @return String Content-Type (e.g. application/json)
sub select_header_content_type
{
    my ($self, @header) = @_;
  
    if (@header == 0 || (@header == 1 && $header[0] eq '')) {
        return 'application/json'; # default to application/json
    } elsif (grep(/^application\/json$/i, @header)) {
        return 'application/json';
    } else {
        return join(',', @header);
    }
  
}

# Get API key (with prefix if set)
# @param string key name
# @return string API key with the prefix
sub get_api_key_with_prefix
{
	my ($self, $key_name) = @_;

	my $api_key = $WWW::SwaggerClient::Configuration::api_key->{$key_name};
	
	return unless $api_key;
	
	my $prefix = $WWW::SwaggerClient::Configuration::api_key_prefix->{$key_name};
	return $prefix ? "$prefix $api_key" : $api_key;
}	

# update header and query param based on authentication setting
#  
# @param array $headerParams header parameters (by ref)
# @param array $queryParams query parameters (by ref)
# @param array $authSettings array of authentication scheme (e.g ['api_key'])
sub update_params_for_auth {
    my ($self, $header_params, $query_params, $auth_settings) = @_;
    
    return $self->_global_auth_setup($header_params, $query_params) 
    	unless $auth_settings && @$auth_settings;
  
    # one endpoint can have more than 1 auth settings
    foreach my $auth (@$auth_settings) {
        # determine which one to use
        if (!defined($auth)) {
            # TODO show warning about auth setting not defined
        }
        elsif ($auth eq 'api_key') {
            
            my $api_key = $self->get_api_key_with_prefix('api_key');
            if ($api_key) {
                $header_params->{'api_key'} = $api_key;
            }
        }
elsif ($auth eq 'petstore_auth') {
            
            if ($WWW::SwaggerClient::Configuration::access_token) {
                $header_params->{'Authorization'} = 'Bearer ' . $WWW::SwaggerClient::Configuration::access_token;
            }
        }
        else {
       	    # TODO show warning about security definition not found
        }
    }
}

# The endpoint API class has not found any settings for auth. This may be deliberate, 
# in which case update_params_for_auth() will be a no-op. But it may also be that the 
# OpenAPI Spec does not describe the intended authorization. So we check in the config for any 
# auth tokens and if we find any, we use them for all endpoints; 
sub _global_auth_setup {
	my ($self, $header_params, $query_params) = @_; 
	
	my $tokens = $self->_cfg->get_tokens;
	return unless keys %$tokens;
	
	# basic
	if (my $uname = delete $tokens->{username}) {
		my $pword = delete $tokens->{password};
		$header_params->{'Authorization'} = 'Basic '.encode_base64($uname.":".$pword);
	}
	
	# oauth
	if (my $access_token = delete $tokens->{access_token}) {
		$header_params->{'Authorization'} = 'Bearer ' . $access_token;
	}
	
	# other keys
	foreach my $token_name (keys %$tokens) {
		my $in = $tokens->{$token_name}->{in};
		my $token = $self->get_api_key_with_prefix($token_name);
		if ($in eq 'head') {
			$header_params->{$token_name} = $token;
		}
		elsif ($in eq 'query') {
			$query_params->{$token_name} = $token;
		}
		else {
			die "Don't know where to put token '$token_name' ('$in' is not 'head' or 'query')";
		}
	}
}


1;
