// Copyright (c) 2025 H0llyW00dzZ All rights reserved.
//
// By accessing or using this software, you agree to be bound by the terms
// of the License Agreement, which you can find at LICENSE files.

package client_test

import (
	"crypto/tls"
	"log"
	"net"
	"testing"

	"git.b0zal.io/H0llyW00dzZ/imap/client"
	"github.com/emersion/go-imap/backend/memory"
	"github.com/emersion/go-imap/server"
	"github.com/stretchr/testify/assert"
)

func setupTestServer() (net.Listener, *server.Server) {
	// Create a memory backend
	be := memory.New()

	// Create a new IMAP server with TLS configuration
	s := server.New(be)
	s.TLSConfig = &tls.Config{
		InsecureSkipVerify: true, // For testing purposes
		Certificates:       []tls.Certificate{loadTLSCertificate()},
	}

	// Listen on a random port
	listener, err := tls.Listen("tcp", "localhost:0", s.TLSConfig)
	if err != nil {
		log.Fatal(err)
	}

	// Start the server
	go func() {
		if err := s.Serve(listener); err != nil {
			log.Println("Server stopped:", err)
		}
	}()

	return listener, s
}

func loadTLSCertificate() tls.Certificate {
	cert, err := tls.LoadX509KeyPair("cert_test.pem", "key_test.pem")
	if err != nil {
		log.Fatal("Failed to load TLS certificate:", err)
	}
	return cert
}

func TestIMAPClient(t *testing.T) {
	listener, srv := setupTestServer()
	defer listener.Close()
	defer srv.Close() // Ensure the server is closed properly

	// Use the existing user in the memory backend
	config := &client.Config{
		Username:           "username", // Use the predefined username
		Password:           "password", // Use the predefined password
		Server:             listener.Addr().String(),
		InsecureSkipVerify: true,
	}

	imapClient := client.NewIMAP(config)

	// Test connection
	err := imapClient.Connect()
	assert.NoError(t, err, "Failed to connect")

	// Test disconnection
	err = imapClient.Disconnect()
	assert.NoError(t, err, "Failed to disconnect")
}

func TestListMessages(t *testing.T) {
	listener, srv := setupTestServer()
	defer listener.Close()
	defer srv.Close() // Ensure the server is closed properly

	// Use the existing user in the memory backend
	config := &client.Config{
		Username:           "username", // Use the predefined username
		Password:           "password", // Use the predefined password
		Server:             listener.Addr().String(),
		InsecureSkipVerify: true,
	}

	imapClient := client.NewIMAP(config)

	// Connect to the server
	err := imapClient.Connect()
	assert.NoError(t, err, "Failed to connect")
	defer imapClient.Disconnect()

	// Define the message config to grab specific parts, including body
	messageConfig := client.MessageConfig{
		GrabID:      true,
		GrabFrom:    true,
		GrabSubject: true,
		GrabBody:    true, // Grab the full body
	}

	// List only one message from the INBOX
	messages, err := imapClient.ListMessages("INBOX", 1, messageConfig)
	assert.NoError(t, err, "Failed to list messages")

	// Validate that only one message is returned
	assert.Len(t, messages, 1, "Expected 1 message")

	// Validate the content of the message
	expectedBody := "From: contact@example.org\r\n" +
		"To: contact@example.org\r\n" +
		"Subject: A little message, just for you\r\n" +
		"Date: Wed, 11 May 2016 14:31:59 +0000\r\n" +
		"Message-ID: <0000000@localhost/>\r\n" +
		"Content-Type: text/plain\r\n" +
		"\r\n" +
		"Hi there :)"

	assert.Equal(t, expectedBody, messages[0][client.KeyBody], "Unexpected body content")
}

func TestListMailboxes(t *testing.T) {
	listener, srv := setupTestServer()
	defer listener.Close()
	defer srv.Close() // Ensure the server is closed properly

	// Use the existing user in the memory backend
	config := &client.Config{
		Username:           "username",
		Password:           "password",
		Server:             listener.Addr().String(),
		InsecureSkipVerify: true,
	}

	imapClient := client.NewIMAP(config)

	// Connect to the server
	err := imapClient.Connect()
	assert.NoError(t, err, "Failed to connect")
	defer imapClient.Disconnect()

	// List mailboxes
	mailboxes, err := imapClient.ListMailboxes()
	assert.NoError(t, err, "Failed to list mailboxes")

	// Validate the mailboxes
	expectedMailboxes := []string{"INBOX"}
	assert.ElementsMatch(t, expectedMailboxes, mailboxes, "Unexpected mailboxes")
}