package gandi

import (
	"io"
	"io/ioutil"
	"net/http"
	"net/http/httptest"
	"regexp"
	"strings"
	"testing"

	"github.com/stretchr/testify/require"
	"github.com/xenolf/lego/platform/tester"
)

var envTest = tester.NewEnvTest("GANDI_API_KEY")

func TestNewDNSProvider(t *testing.T) {
	testCases := []struct {
		desc     string
		envVars  map[string]string
		expected string
	}{
		{
			desc: "success",
			envVars: map[string]string{
				"GANDI_API_KEY": "123",
			},
		},
		{
			desc: "missing api key",
			envVars: map[string]string{
				"GANDI_API_KEY": "",
			},
			expected: "gandi: some credentials information are missing: GANDI_API_KEY",
		},
	}

	for _, test := range testCases {
		t.Run(test.desc, func(t *testing.T) {
			defer envTest.RestoreEnv()
			envTest.ClearEnv()

			envTest.Apply(test.envVars)

			p, err := NewDNSProvider()

			if len(test.expected) == 0 {
				require.NoError(t, err)
				require.NotNil(t, p)
				require.NotNil(t, p.config)
				require.NotNil(t, p.inProgressFQDNs)
				require.NotNil(t, p.inProgressAuthZones)
			} else {
				require.EqualError(t, err, test.expected)
			}
		})
	}
}

func TestNewDNSProviderConfig(t *testing.T) {
	testCases := []struct {
		desc     string
		apiKey   string
		expected string
	}{
		{
			desc:   "success",
			apiKey: "123",
		},
		{
			desc:     "missing credentials",
			expected: "gandi: no API Key given",
		},
	}

	for _, test := range testCases {
		t.Run(test.desc, func(t *testing.T) {
			config := NewDefaultConfig()
			config.APIKey = test.apiKey

			p, err := NewDNSProviderConfig(config)

			if len(test.expected) == 0 {
				require.NoError(t, err)
				require.NotNil(t, p)
				require.NotNil(t, p.config)
				require.NotNil(t, p.inProgressFQDNs)
				require.NotNil(t, p.inProgressAuthZones)
			} else {
				require.EqualError(t, err, test.expected)
			}
		})
	}
}

// TestDNSProvider runs Present and CleanUp against a fake Gandi RPC
// Server, whose responses are predetermined for particular requests.
func TestDNSProvider(t *testing.T) {
	fakeKeyAuth := "XXXX"

	regexpDate, err := regexp.Compile(`\[ACME Challenge [^\]:]*:[^\]]*\]`)
	require.NoError(t, err)

	// start fake RPC server
	fakeServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		require.Equal(t, "text/xml", r.Header.Get("Content-Type"), "invalid content type")

		req, errS := ioutil.ReadAll(r.Body)
		require.NoError(t, errS)

		req = regexpDate.ReplaceAllLiteral(req, []byte(`[ACME Challenge 01 Jan 16 00:00 +0000]`))
		resp, ok := serverResponses[string(req)]
		require.True(t, ok, "Server response for request not found")

		_, errS = io.Copy(w, strings.NewReader(resp))
		require.NoError(t, errS)
	}))
	defer fakeServer.Close()

	// define function to override findZoneByFqdn with
	fakeFindZoneByFqdn := func(fqdn string, nameserver []string) (string, error) {
		return "example.com.", nil
	}

	config := NewDefaultConfig()
	config.BaseURL = fakeServer.URL + "/"
	config.APIKey = "123412341234123412341234"

	provider, err := NewDNSProviderConfig(config)
	require.NoError(t, err)

	// override findZoneByFqdn function
	savedFindZoneByFqdn := findZoneByFqdn
	defer func() {
		findZoneByFqdn = savedFindZoneByFqdn
	}()
	findZoneByFqdn = fakeFindZoneByFqdn

	// run Present
	err = provider.Present("abc.def.example.com", "", fakeKeyAuth)
	require.NoError(t, err)

	// run CleanUp
	err = provider.CleanUp("abc.def.example.com", "", fakeKeyAuth)
	require.NoError(t, err)
}

// serverResponses is the XML-RPC Request->Response map used by the
// fake RPC server. It was generated by recording a real RPC session
// which resulted in the successful issue of a cert, and then
// anonymizing the RPC data.
var serverResponses = map[string]string{
	// Present Request->Response 1 (getZoneID)
	`<?xml version="1.0"?>
<methodCall>
  <methodName>domain.info</methodName>
  <param>
    <value>
      <string>123412341234123412341234</string>
    </value>
  </param>
  <param>
    <value>
      <string>example.com.</string>
    </value>
  </param>
</methodCall>`: `<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><struct>
<member>
<name>date_updated</name>
<value><dateTime.iso8601>20160216T16:14:23</dateTime.iso8601></value>
</member>
<member>
<name>date_delete</name>
<value><dateTime.iso8601>20170331T16:04:06</dateTime.iso8601></value>
</member>
<member>
<name>is_premium</name>
<value><boolean>0</boolean></value>
</member>
<member>
<name>date_hold_begin</name>
<value><dateTime.iso8601>20170215T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>date_registry_end</name>
<value><dateTime.iso8601>20170215T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>authinfo_expiration_date</name>
<value><dateTime.iso8601>20161211T21:31:20</dateTime.iso8601></value>
</member>
<member>
<name>contacts</name>
<value><struct>
<member>
<name>owner</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>admin</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>bill</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>tech</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>reseller</name>
<value><nil/></value></member>
</struct></value>
</member>
<member>
<name>nameservers</name>
<value><array><data>
<value><string>a.dns.gandi.net</string></value>
<value><string>b.dns.gandi.net</string></value>
<value><string>c.dns.gandi.net</string></value>
</data></array></value>
</member>
<member>
<name>date_restore_end</name>
<value><dateTime.iso8601>20170501T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>id</name>
<value><int>2222222</int></value>
</member>
<member>
<name>authinfo</name>
<value><string>ABCDABCDAB</string></value>
</member>
<member>
<name>status</name>
<value><array><data>
<value><string>clientTransferProhibited</string></value>
<value><string>serverTransferProhibited</string></value>
</data></array></value>
</member>
<member>
<name>tags</name>
<value><array><data>
</data></array></value>
</member>
<member>
<name>date_hold_end</name>
<value><dateTime.iso8601>20170401T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>services</name>
<value><array><data>
<value><string>gandidns</string></value>
<value><string>gandimail</string></value>
</data></array></value>
</member>
<member>
<name>date_pending_delete_end</name>
<value><dateTime.iso8601>20170506T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>zone_id</name>
<value><int>1234567</int></value>
</member>
<member>
<name>date_renew_begin</name>
<value><dateTime.iso8601>20120101T00:00:00</dateTime.iso8601></value>
</member>
<member>
<name>fqdn</name>
<value><string>example.com</string></value>
</member>
<member>
<name>autorenew</name>
<value><nil/></value></member>
<member>
<name>date_registry_creation</name>
<value><dateTime.iso8601>20150215T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>tld</name>
<value><string>org</string></value>
</member>
<member>
<name>date_created</name>
<value><dateTime.iso8601>20150215T03:04:06</dateTime.iso8601></value>
</member>
</struct></value>
</param>
</params>
</methodResponse>
`,
	// Present Request->Response 2 (cloneZone)
	`<?xml version="1.0"?>
<methodCall>
  <methodName>domain.zone.clone</methodName>
  <param>
    <value>
      <string>123412341234123412341234</string>
    </value>
  </param>
  <param>
    <value>
      <int>1234567</int>
    </value>
  </param>
  <param>
    <value>
      <int>0</int>
    </value>
  </param>
  <param>
    <value>
      <struct>
        <member>
          <name>name</name>
          <value>
            <string>example.com [ACME Challenge 01 Jan 16 00:00 +0000]</string>
          </value>
        </member>
      </struct>
    </value>
  </param>
</methodCall>`: `<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><struct>
<member>
<name>name</name>
<value><string>example.com [ACME Challenge 01 Jan 16 00:00 +0000]</string></value>
</member>
<member>
<name>versions</name>
<value><array><data>
<value><int>1</int></value>
</data></array></value>
</member>
<member>
<name>date_updated</name>
<value><dateTime.iso8601>20160216T16:24:29</dateTime.iso8601></value>
</member>
<member>
<name>id</name>
<value><int>7654321</int></value>
</member>
<member>
<name>owner</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>version</name>
<value><int>1</int></value>
</member>
<member>
<name>domains</name>
<value><int>0</int></value>
</member>
<member>
<name>public</name>
<value><boolean>0</boolean></value>
</member>
</struct></value>
</param>
</params>
</methodResponse>
`,
	// Present Request->Response 3 (newZoneVersion)
	`<?xml version="1.0"?>
<methodCall>
  <methodName>domain.zone.version.new</methodName>
  <param>
    <value>
      <string>123412341234123412341234</string>
    </value>
  </param>
  <param>
    <value>
      <int>7654321</int>
    </value>
  </param>
</methodCall>`: `<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><int>2</int></value>
</param>
</params>
</methodResponse>
`,
	// Present Request->Response 4 (addTXTRecord)
	`<?xml version="1.0"?>
<methodCall>
  <methodName>domain.zone.record.add</methodName>
  <param>
    <value>
      <string>123412341234123412341234</string>
    </value>
  </param>
  <param>
    <value>
      <int>7654321</int>
    </value>
  </param>
  <param>
    <value>
      <int>2</int>
    </value>
  </param>
  <param>
    <value>
      <struct>
        <member>
          <name>type</name>
          <value>
            <string>TXT</string>
          </value>
        </member>
        <member>
          <name>name</name>
          <value>
            <string>_acme-challenge.abc.def</string>
          </value>
        </member>
        <member>
          <name>value</name>
          <value>
            <string>ezRpBPY8wH8djMLYjX2uCKPwiKDkFZ1SFMJ6ZXGlHrQ</string>
          </value>
        </member>
        <member>
          <name>ttl</name>
          <value>
            <int>300</int>
          </value>
        </member>
      </struct>
    </value>
  </param>
</methodCall>`: `<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><struct>
<member>
<name>name</name>
<value><string>_acme-challenge.abc.def</string></value>
</member>
<member>
<name>type</name>
<value><string>TXT</string></value>
</member>
<member>
<name>id</name>
<value><int>333333333</int></value>
</member>
<member>
<name>value</name>
<value><string>"ezRpBPY8wH8djMLYjX2uCKPwiKDkFZ1SFMJ6ZXGlHrQ"</string></value>
</member>
<member>
<name>ttl</name>
<value><int>300</int></value>
</member>
</struct></value>
</param>
</params>
</methodResponse>
`,
	// Present Request->Response 5 (setZoneVersion)
	`<?xml version="1.0"?>
<methodCall>
  <methodName>domain.zone.version.set</methodName>
  <param>
    <value>
      <string>123412341234123412341234</string>
    </value>
  </param>
  <param>
    <value>
      <int>7654321</int>
    </value>
  </param>
  <param>
    <value>
      <int>2</int>
    </value>
  </param>
</methodCall>`: `<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><boolean>1</boolean></value>
</param>
</params>
</methodResponse>
`,
	// Present Request->Response 6 (setZone)
	`<?xml version="1.0"?>
<methodCall>
  <methodName>domain.zone.set</methodName>
  <param>
    <value>
      <string>123412341234123412341234</string>
    </value>
  </param>
  <param>
    <value>
      <string>example.com.</string>
    </value>
  </param>
  <param>
    <value>
      <int>7654321</int>
    </value>
  </param>
</methodCall>`: `<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><struct>
<member>
<name>date_updated</name>
<value><dateTime.iso8601>20160216T16:14:23</dateTime.iso8601></value>
</member>
<member>
<name>date_delete</name>
<value><dateTime.iso8601>20170331T16:04:06</dateTime.iso8601></value>
</member>
<member>
<name>is_premium</name>
<value><boolean>0</boolean></value>
</member>
<member>
<name>date_hold_begin</name>
<value><dateTime.iso8601>20170215T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>date_registry_end</name>
<value><dateTime.iso8601>20170215T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>authinfo_expiration_date</name>
<value><dateTime.iso8601>20161211T21:31:20</dateTime.iso8601></value>
</member>
<member>
<name>contacts</name>
<value><struct>
<member>
<name>owner</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>admin</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>bill</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>tech</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>reseller</name>
<value><nil/></value></member>
</struct></value>
</member>
<member>
<name>nameservers</name>
<value><array><data>
<value><string>a.dns.gandi.net</string></value>
<value><string>b.dns.gandi.net</string></value>
<value><string>c.dns.gandi.net</string></value>
</data></array></value>
</member>
<member>
<name>date_restore_end</name>
<value><dateTime.iso8601>20170501T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>id</name>
<value><int>2222222</int></value>
</member>
<member>
<name>authinfo</name>
<value><string>ABCDABCDAB</string></value>
</member>
<member>
<name>status</name>
<value><array><data>
<value><string>clientTransferProhibited</string></value>
<value><string>serverTransferProhibited</string></value>
</data></array></value>
</member>
<member>
<name>tags</name>
<value><array><data>
</data></array></value>
</member>
<member>
<name>date_hold_end</name>
<value><dateTime.iso8601>20170401T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>services</name>
<value><array><data>
<value><string>gandidns</string></value>
<value><string>gandimail</string></value>
</data></array></value>
</member>
<member>
<name>date_pending_delete_end</name>
<value><dateTime.iso8601>20170506T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>zone_id</name>
<value><int>7654321</int></value>
</member>
<member>
<name>date_renew_begin</name>
<value><dateTime.iso8601>20120101T00:00:00</dateTime.iso8601></value>
</member>
<member>
<name>fqdn</name>
<value><string>example.com</string></value>
</member>
<member>
<name>autorenew</name>
<value><nil/></value></member>
<member>
<name>date_registry_creation</name>
<value><dateTime.iso8601>20150215T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>tld</name>
<value><string>org</string></value>
</member>
<member>
<name>date_created</name>
<value><dateTime.iso8601>20150215T03:04:06</dateTime.iso8601></value>
</member>
</struct></value>
</param>
</params>
</methodResponse>
`,
	// CleanUp Request->Response 1 (setZone)
	`<?xml version="1.0"?>
<methodCall>
  <methodName>domain.zone.set</methodName>
  <param>
    <value>
      <string>123412341234123412341234</string>
    </value>
  </param>
  <param>
    <value>
      <string>example.com.</string>
    </value>
  </param>
  <param>
    <value>
      <int>1234567</int>
    </value>
  </param>
</methodCall>`: `<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><struct>
<member>
<name>date_updated</name>
<value><dateTime.iso8601>20160216T16:24:38</dateTime.iso8601></value>
</member>
<member>
<name>date_delete</name>
<value><dateTime.iso8601>20170331T16:04:06</dateTime.iso8601></value>
</member>
<member>
<name>is_premium</name>
<value><boolean>0</boolean></value>
</member>
<member>
<name>date_hold_begin</name>
<value><dateTime.iso8601>20170215T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>date_registry_end</name>
<value><dateTime.iso8601>20170215T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>authinfo_expiration_date</name>
<value><dateTime.iso8601>20161211T21:31:20</dateTime.iso8601></value>
</member>
<member>
<name>contacts</name>
<value><struct>
<member>
<name>owner</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>admin</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>bill</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>tech</name>
<value><struct>
<member>
<name>handle</name>
<value><string>LEGO-GANDI</string></value>
</member>
<member>
<name>id</name>
<value><int>111111</int></value>
</member>
</struct></value>
</member>
<member>
<name>reseller</name>
<value><nil/></value></member>
</struct></value>
</member>
<member>
<name>nameservers</name>
<value><array><data>
<value><string>a.dns.gandi.net</string></value>
<value><string>b.dns.gandi.net</string></value>
<value><string>c.dns.gandi.net</string></value>
</data></array></value>
</member>
<member>
<name>date_restore_end</name>
<value><dateTime.iso8601>20170501T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>id</name>
<value><int>2222222</int></value>
</member>
<member>
<name>authinfo</name>
<value><string>ABCDABCDAB</string></value>
</member>
<member>
<name>status</name>
<value><array><data>
<value><string>clientTransferProhibited</string></value>
<value><string>serverTransferProhibited</string></value>
</data></array></value>
</member>
<member>
<name>tags</name>
<value><array><data>
</data></array></value>
</member>
<member>
<name>date_hold_end</name>
<value><dateTime.iso8601>20170401T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>services</name>
<value><array><data>
<value><string>gandidns</string></value>
<value><string>gandimail</string></value>
</data></array></value>
</member>
<member>
<name>date_pending_delete_end</name>
<value><dateTime.iso8601>20170506T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>zone_id</name>
<value><int>1234567</int></value>
</member>
<member>
<name>date_renew_begin</name>
<value><dateTime.iso8601>20120101T00:00:00</dateTime.iso8601></value>
</member>
<member>
<name>fqdn</name>
<value><string>example.com</string></value>
</member>
<member>
<name>autorenew</name>
<value><nil/></value></member>
<member>
<name>date_registry_creation</name>
<value><dateTime.iso8601>20150215T02:04:06</dateTime.iso8601></value>
</member>
<member>
<name>tld</name>
<value><string>org</string></value>
</member>
<member>
<name>date_created</name>
<value><dateTime.iso8601>20150215T03:04:06</dateTime.iso8601></value>
</member>
</struct></value>
</param>
</params>
</methodResponse>
`,
	// CleanUp Request->Response 2 (deleteZone)
	`<?xml version="1.0"?>
<methodCall>
  <methodName>domain.zone.delete</methodName>
  <param>
    <value>
      <string>123412341234123412341234</string>
    </value>
  </param>
  <param>
    <value>
      <int>7654321</int>
    </value>
  </param>
</methodCall>`: `<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><boolean>1</boolean></value>
</param>
</params>
</methodResponse>
`,
}