using System.CommandLine;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Text.Json;
using ZB.MOM.WW.ScadaBridge.CLI.Commands;

namespace ZB.MOM.WW.ScadaBridge.CLI.Tests;

[Collection("Console")]
public class NotificationParityTests
{
    private static RootCommand Root()
    {
        var root = new RootCommand();
        var url = new Option<string>("--url") { Recursive = true };
        var format = new Option<string>("--format") { Recursive = true };
        var user = new Option<string>("--username") { Recursive = true };
        var password = new Option<string>("--password") { Recursive = true };
        root.Add(url); root.Add(format); root.Add(user); root.Add(password);
        root.Add(NotificationCommands.Build(url, format, user, password));
        return root;
    }

    [Theory]
    [InlineData("rename --id 7 --name Operators", "RenameNotificationListCommand", "notificationListId", "7")]
    [InlineData("recipient add --list-id 7 --name Jane --email jane@example.com", "AddNotificationRecipientCommand", "name", "Jane")]
    [InlineData("recipient add --list-id 7 --name Jane --phone +15551234567", "AddNotificationRecipientCommand", "phoneNumber", "+15551234567")]
    [InlineData("recipient delete --id 42", "DeleteNotificationRecipientCommand", "recipientId", "42")]
    [InlineData("smtp create --server mail.example.com --port 587 --auth-mode basic --from-address ops@example.com --tls-mode StartTLS --credentials test:secret", "CreateSmtpConfigCommand", "tlsMode", "StartTLS")]
    [InlineData("sms create --account-sid AC00000000000000000000000000000000 --from-number +15551234567 --auth-token secret", "CreateSmsConfigCommand", "authToken", "secret")]
    [InlineData("sms update --id 8 --account-sid AC00000000000000000000000000000000 --from-number +15551234567 --connection-timeout-seconds 15 --max-retries 4 --retry-delay-seconds 90", "UpdateSmsConfigCommand", "retryDelay", "00:01:30")]
    public async Task InvocationSendsDedicatedContract(string arguments, string command, string property, string expected)
    {
        var body = await Capture(arguments);
        Assert.Equal(command.Replace("Command", ""), body.GetProperty("command").GetString());
        var payload = body.GetProperty("payload");
        Assert.Equal(expected, payload.GetProperty(property).ToString());
        if (command == "AddNotificationRecipientCommand")
        {
            Assert.Equal(7, payload.GetProperty("notificationListId").GetInt32());
            Assert.Equal("Jane", payload.GetProperty("name").GetString());
            Assert.Equal(arguments.Contains("--email") ? "jane@example.com" : null, payload.GetProperty("emailAddress").GetString());
            Assert.Equal(arguments.Contains("--phone") ? "+15551234567" : null, payload.GetProperty("phoneNumber").GetString());
        }
        if (command == "RenameNotificationListCommand")
        {
            Assert.Equal("Operators", payload.GetProperty("name").GetString());
            Assert.False(payload.TryGetProperty("recipientEmails", out _));
        }
    }

    [Theory]
    [InlineData("create --auth-token secret")]
    [InlineData("update --id 8")]
    public async Task SmsPolicyExplicitValuesIncludingZeroAreForwarded(string verb)
    {
        var payload = (await Capture($"sms {verb} --account-sid AC00000000000000000000000000000000 --messaging-service-sid MG123 --connection-timeout-seconds 15 --max-retries 0 --retry-delay-seconds 0")).GetProperty("payload");
        Assert.Equal(15, payload.GetProperty("connectionTimeoutSeconds").GetInt32());
        Assert.Equal(0, payload.GetProperty("maxRetries").GetInt32());
        Assert.Equal("00:00:00", payload.GetProperty("retryDelay").GetString());
        Assert.Equal(JsonValueKind.Null, payload.GetProperty("fromNumber").ValueKind);
    }

    [Fact]
    public async Task SmtpCreateForwardsAllOptionalFields()
    {
        var payload = (await Capture("smtp create --server mail.example.com --port 587 --auth-mode oauth2 --from-address ops@example.com --credentials secret --oauth2-authority https://login.example.com/token --oauth2-scope scope --transport Smtp --tls-mode StartTLS")).GetProperty("payload");
        Assert.Equal("secret", payload.GetProperty("credentials").GetString());
        Assert.Equal("https://login.example.com/token", payload.GetProperty("oAuth2Authority").GetString());
        Assert.Equal("scope", payload.GetProperty("oAuth2Scope").GetString());
        Assert.Equal("Smtp", payload.GetProperty("transport").GetString());
    }

    [Fact]
    public async Task SmtpCreateOmittedOptionsUseServerDefaults()
    {
        var payload = (await Capture("smtp create --server mail.example.com --port 25 --auth-mode none --from-address ops@example.com")).GetProperty("payload");
        foreach (var name in new[] { "tlsMode", "credentials", "oAuth2Authority", "oAuth2Scope", "transport" })
            Assert.Equal(JsonValueKind.Null, payload.GetProperty(name).ValueKind);
    }

    [Theory]
    [InlineData("create --auth-token secret")]
    [InlineData("update --id 8")]
    public async Task OmittedSmsPolicyAndSecretsRemainNull(string verb)
    {
        var payload = (await Capture($"sms {verb} --account-sid AC00000000000000000000000000000000 --from-number +15551234567")).GetProperty("payload");
        foreach (var name in new[] { "connectionTimeoutSeconds", "maxRetries", "retryDelay", "apiBaseUrl", "messagingServiceSid" })
            Assert.Equal(JsonValueKind.Null, payload.GetProperty(name).ValueKind);
        if (verb.StartsWith("update")) Assert.Equal(JsonValueKind.Null, payload.GetProperty("authToken").ValueKind);
    }

    [Theory]
    [InlineData("sms create --account-sid AC00000000000000000000000000000000 --from-number +15551234567")]
    [InlineData("sms update --id 8 --account-sid AC00000000000000000000000000000000 --from-number +15551234567 --max-retries -1")]
    [InlineData("sms update --id 8 --account-sid AC00000000000000000000000000000000 --from-number +15551234567 --connection-timeout-seconds 0")]
    [InlineData("sms update --id 8 --account-sid AC00000000000000000000000000000000 --from-number +15551234567 --retry-delay-seconds -1")]
    [InlineData("recipient add --list-id 7 --name Jane")]
    [InlineData("recipient delete --id 0")]
    public void InvalidInputFailsParsing(string arguments)
    {
        Assert.NotEmpty(Root().Parse(("notification " + arguments).Split(' ')).Errors);
    }

    private static async Task<JsonElement> Capture(string arguments)
    {
        using var listener = new TcpListener(IPAddress.Loopback, 0);
        listener.Start();
        var port = ((IPEndPoint)listener.LocalEndpoint).Port;
        var parse = Root().Parse(("notification " + arguments + $" --url http://127.0.0.1:{port} --username test --password test --format json").Split(' '));
        Assert.Empty(parse.Errors);
        var server = Task.Run(async () =>
        {
            using var client = await listener.AcceptTcpClientAsync();
            await using var stream = client.GetStream();
            using var reader = new StreamReader(stream, Encoding.UTF8, leaveOpen: true);
            var length = 0;
            while (await reader.ReadLineAsync() is { Length: > 0 } line)
                if (line.StartsWith("Content-Length:", StringComparison.OrdinalIgnoreCase)) length = int.Parse(line.Split(':')[1]);
            var buffer = new char[length];
            await reader.ReadBlockAsync(buffer);
            var body = JsonDocument.Parse(new string(buffer)).RootElement.Clone();
            await stream.WriteAsync(Encoding.ASCII.GetBytes("HTTP/1.1 200 OK\r\nContent-Type: application/json\r\nContent-Length: 2\r\nConnection: close\r\n\r\n{}"));
            return body;
        });
        Assert.Equal(0, await parse.InvokeAsync());
        return await server.WaitAsync(TimeSpan.FromSeconds(5));
    }
}