package web

import (
	"bytes"
	"github.com/jhillyerd/go.enmime"
	"github.com/jhillyerd/inbucket/config"
	"github.com/jhillyerd/inbucket/smtpd"
	"github.com/stretchr/testify/mock"
	"io"
	"log"
	"net/http"
	"net/http/httptest"
	"net/mail"
	"os"
	"testing"
	"time"
)

func TestRestMailboxList(t *testing.T) {
	// Create Mock Objects
	ds := &MockDataStore{}
	emptybox := &MockMailbox{}
	ds.On("MailboxFor", "empty").Return(emptybox, nil)
	emptybox.On("GetMessages").Return([]smtpd.Message{}, nil)

	logbuf := setupWebServer(ds)

	// Test invalid mailbox name
	w, err := testRestGet("http://localhost/mailbox/foo@bar")
	expectCode := 500
	if err != nil {
		t.Fatal(err)
	}
	if w.Code != expectCode {
		t.Errorf("Expected code %v, got %v", expectCode, w.Code)
	}

	// Test empty mailbox
	w, err = testRestGet("http://localhost/mailbox/empty")
	expectCode = 200
	if err != nil {
		t.Fatal(err)
	}
	if w.Code != expectCode {
		t.Errorf("Expected code %v, got %v", expectCode, w.Code)
	}

	if t.Failed() {
		// Wait for handler to finish logging
		time.Sleep(2 * time.Second)
		// Dump buffered log data if there was a failure
		io.Copy(os.Stderr, logbuf)
	}
}

func testRestGet(url string) (*httptest.ResponseRecorder, error) {
	req, err := http.NewRequest("GET", url, nil)
	req.Header.Add("Accept", "application/json")
	if err != nil {
		return nil, err
	}

	w := httptest.NewRecorder()
	Router.ServeHTTP(w, req)
	return w, nil
}

func setupWebServer(ds smtpd.DataStore) *bytes.Buffer {
	// Capture log output
	buf := new(bytes.Buffer)
	log.SetOutput(buf)

	cfg := config.WebConfig{
		TemplateDir: "../themes/integral/templates",
		PublicDir:   "../themes/integral/public",
	}
	Initialize(cfg, ds)

	return buf
}

// Mock DataStore object
type MockDataStore struct {
	mock.Mock
}

func (m *MockDataStore) MailboxFor(name string) (smtpd.Mailbox, error) {
	args := m.Called(name)
	return args.Get(0).(smtpd.Mailbox), args.Error(1)
}

func (m *MockDataStore) AllMailboxes() ([]smtpd.Mailbox, error) {
	args := m.Called()
	return args.Get(0).([]smtpd.Mailbox), args.Error(1)
}

// Mock Mailbox object
type MockMailbox struct {
	mock.Mock
}

func (m *MockMailbox) GetMessages() ([]smtpd.Message, error) {
	args := m.Called()
	return args.Get(0).([]smtpd.Message), args.Error(1)
}

func (m *MockMailbox) GetMessage(id string) (smtpd.Message, error) {
	args := m.Called(id)
	return args.Get(0).(smtpd.Message), args.Error(1)
}

func (m *MockMailbox) Purge() error {
	args := m.Called()
	return args.Error(0)
}

func (m *MockMailbox) NewMessage() (smtpd.Message, error) {
	args := m.Called()
	return args.Get(0).(smtpd.Message), args.Error(1)
}

func (m *MockMailbox) String() string {
	args := m.Called()
	return args.String(0)
}

// Mock Message object
type MockMessage struct {
	mock.Mock
}

func (m *MockMessage) Id() string {
	args := m.Called()
	return args.String(0)
}

func (m *MockMessage) From() string {
	args := m.Called()
	return args.String(0)
}

func (m *MockMessage) Date() time.Time {
	args := m.Called()
	return args.Get(0).(time.Time)
}

func (m *MockMessage) Subject() string {
	args := m.Called()
	return args.String(0)
}

func (m *MockMessage) ReadHeader() (msg *mail.Message, err error) {
	args := m.Called()
	return args.Get(0).(*mail.Message), args.Error(1)
}

func (m *MockMessage) ReadBody() (body *enmime.MIMEBody, err error) {
	args := m.Called()
	return args.Get(0).(*enmime.MIMEBody), args.Error(1)
}

func (m *MockMessage) ReadRaw() (raw *string, err error) {
	args := m.Called()
	return args.Get(0).(*string), args.Error(1)
}

func (m *MockMessage) RawReader() (reader io.ReadCloser, err error) {
	args := m.Called()
	return args.Get(0).(io.ReadCloser), args.Error(1)
}

func (m *MockMessage) Size() int64 {
	args := m.Called()
	return int64(args.Int(0))
}

func (m *MockMessage) Append(data []byte) error {
	// []byte arg seems to mess up testify/mock
	return nil
}

func (m *MockMessage) Close() error {
	args := m.Called()
	return args.Error(0)
}

func (m *MockMessage) Delete() error {
	args := m.Called()
	return args.Error(0)
}

func (m *MockMessage) String() string {
	args := m.Called()
	return args.String(0)
}