use strict;
use warnings;
use Digest::MD5 qw(md5_hex);
use Net::EmptyPort qw(check_port empty_port);
use Test::More;
use t::Util;

plan skip_all => 'plackup not found'
    unless prog_exists('plackup');

plan skip_all => 'Starlet not found'
    unless system('perl -MStarlet /dev/null > /dev/null 2>&1') == 0;

plan skip_all => 'curl not found'
    unless prog_exists('curl');

# start upstream
my $upstream_port = empty_port();
my $upstream = spawn_server(
    argv     => [
        qw(plackup -MPlack::App::File -s Starlet --access-log /dev/null -p), $upstream_port,
        ASSETS_DIR . "/upstream.psgi",
    ],
    is_ready =>  sub {
        check_port($upstream_port);
    },
);

subtest 'preserve-host' => sub {
    my $doit = sub {
        my $flag = shift;
        my $server = spawn_h2o(<< "EOT");
hosts:
  default:
    paths:
      /:
        proxy.reverse.url: http://127.0.0.1:$upstream_port
        proxy.preserve-host: @{[ $flag ? 'ON' : 'OFF' ]}
EOT
        my $res = `curl --silent http://127.0.0.1:$server->{port}/echo-headers`;
        like $res, qr/^host: 127.0.0.1:@{[ $flag ? $server->{port} : $upstream_port ]}$/im, 'host header';

        $res = `curl --silent --dump-header /dev/stdout "http://127.0.0.1:$server->{port}/?resp:status=302&resp:location=http://127.0.0.1:$server->{port}/foo"`;
        like $res, qr{^location: http://127\.0\.0\.1:$server->{port}/foo}im, 'location: :server_port';
        warn qq{curl --silent --dump-header /dev/stdout "http://127.0.0.1:$server->{port}/?resp:status=302&resp:location=http://127.0.0.1:$upstream_port/foo"};
        $res = `curl --silent --dump-header /dev/stdout "http://127.0.0.1:$server->{port}/?resp:status=302&resp:location=http://127.0.0.1:$upstream_port/foo"`;
        like $res, qr{^location: http://127\.0\.0\.1:$server->{port}/foo}im, 'location :upstream_port';
    };

    subtest 'ON' => sub {
        $doit->(1);
    };
    subtest 'OFF' => sub {
        $doit->(0);
    };
};

subtest 'timeout.io' => sub {
    my $server = spawn_h2o(<< "EOT");
hosts:
  default:
    paths:
      /:
        proxy.reverse.url: http://127.0.0.1:$upstream_port
        proxy.timeout.io: 2000
EOT
    my $fetch = sub {
        my $sleep = shift;
        `curl --silent --dump-header /dev/stderr http://127.0.0.1:$server->{port}/sleep-and-respond?sleep=$sleep 2>&1 > /dev/null`;
    };
    my $resp = $fetch->(1);
    like $resp, qr{^HTTP/1\.1 200 }s, "respond before timeout";
    $resp = $fetch->(3);
    like $resp, qr{^HTTP/1\.1 502 }s, "respond after timeout";
};

subtest 'infinite-internal-redirect' => sub {
    my $server = spawn_h2o(<< "EOT");
hosts:
  default:
    paths:
      /:
        proxy.reverse.url: http://127.0.0.1:$upstream_port
reproxy: ON
EOT
    my $resp = `curl --silent --dump-header /dev/stderr "http://127.0.0.1:$server->{port}/?resp:x-reproxy-url=http://127.0.0.1:$upstream_port/infinite-redirect" 2>&1 > /dev/null`;
    like $resp, qr{^HTTP/1\.1 502 }s;
};

subtest 'max-delegations' => sub {
    my $server = spawn_h2o(<< "EOT");
hosts:
  default:
    paths:
      /:
        proxy.reverse.url: http://127.0.0.1:$upstream_port
reproxy: ON
max-delegations: 0
EOT
    my $resp = `curl --silent --dump-header /dev/stderr "http://127.0.0.1:$server->{port}/?resp:x-reproxy-url=http://127.0.0.1:$upstream_port/index.txt" 2>&1 > /dev/null`;
    like $resp, qr{^HTTP/1\.1 502 }s;
};

done_testing;