using SkiaSharp;
using System;
using System.IO;
using System.Threading;
using TwitchDownloaderCLI.Modes.Arguments;
using TwitchDownloaderCLI.Tools;
using TwitchDownloaderCore;
using TwitchDownloaderCore.Chat;
using TwitchDownloaderCore.Interfaces;
using TwitchDownloaderCore.Options;

namespace TwitchDownloaderCLI.Modes
{
    internal static class RenderChat
    {
        internal static void Render(ChatRenderArgs inputOptions)
        {
            using var progress = new CliTaskProgress(inputOptions.LogLevel);

            FfmpegHandler.DetectFfmpeg(inputOptions.FfmpegPath, progress);

            var collisionHandler = new FileCollisionHandler(inputOptions, progress);
            var renderOptions = GetRenderOptions(inputOptions, collisionHandler, progress);

            using var chatRenderer = new ChatRenderer(renderOptions, progress);
            chatRenderer.ParseJsonAsync().Wait();
            chatRenderer.RenderVideoAsync(new CancellationToken()).Wait();
        }

        private static ChatRenderOptions GetRenderOptions(ChatRenderArgs inputOptions, FileCollisionHandler collisionHandler, ITaskLogger logger)
        {
            ChatRenderOptions renderOptions = new()
            {
                InputFile = inputOptions.InputFile,
                OutputFile = inputOptions.OutputFile,
                BackgroundColor = SKColor.Parse(inputOptions.BackgroundColor),
                AlternateBackgroundColor = SKColor.Parse(inputOptions.AlternateBackgroundColor),
                MessageColor = SKColor.Parse(inputOptions.MessageColor),
                ChatHeight = inputOptions.ChatHeight,
                ChatWidth = inputOptions.ChatWidth,
                StartOverride = (int)((TimeSpan)inputOptions.TrimBeginningTime).TotalSeconds,
                EndOverride = (int)((TimeSpan)inputOptions.TrimEndingTime).TotalSeconds,
                BttvEmotes = (bool)inputOptions.BttvEmotes!,
                FfzEmotes = (bool)inputOptions.FfzEmotes!,
                StvEmotes = (bool)inputOptions.StvEmotes!,
                AllowUnlistedEmotes = (bool)inputOptions.AllowUnlistedEmotes!,
                Outline = inputOptions.Outline,
                OutlineSize = inputOptions.OutlineSize,
                Font = inputOptions.Font,
                FontSize = inputOptions.FontSize,
                ChatBadgeMask = inputOptions.BadgeFilterMask,
                MessageFontStyle = inputOptions.MessageFontStyle.ToLower() switch
                {
                    "normal" => SKFontStyle.Normal,
                    "bold" => SKFontStyle.Bold,
                    "italic" or "italics" => SKFontStyle.Italic,
                    _ => throw new NotSupportedException("Invalid message font style. Valid values are: normal, bold, and italic")
                },
                UsernameFontStyle = inputOptions.UsernameFontStyle.ToLower() switch
                {
                    "normal" => SKFontStyle.Normal,
                    "bold" => SKFontStyle.Bold,
                    "italic" or "italics" => SKFontStyle.Italic,
                    _ => throw new NotSupportedException("Invalid username font style. Valid values are: normal, bold, and italic")
                },
                UpdateRate = inputOptions.UpdateRate,
                Framerate = inputOptions.Framerate,
                GenerateMask = inputOptions.GenerateMask,
                InputArgs = inputOptions.Sharpening ? inputOptions.InputArgs + " -filter_complex \"smartblur=lr=1:ls=-1.0\"" : inputOptions.InputArgs,
                OutputArgs = inputOptions.OutputArgs,
                FfmpegPath = string.IsNullOrWhiteSpace(inputOptions.FfmpegPath) ? FfmpegHandler.FfmpegExecutableName : Path.GetFullPath(inputOptions.FfmpegPath),
                TempFolder = inputOptions.TempFolder,
                SubMessages = (bool)inputOptions.SubMessages!,
                ChatBadges = (bool)inputOptions.ChatBadges!,
                Timestamp = inputOptions.Timestamp,
                Offline = inputOptions.Offline,
                EmojiVendor = inputOptions.EmojiVendor.ToLower() switch
                {
                    "twitter" or "twemoji" => EmojiVendor.TwitterTwemoji,
                    "google" or "notocolor" => EmojiVendor.GoogleNotoColor,
                    "system" or "none" => EmojiVendor.None,
                    _ => throw new NotSupportedException("Invalid emoji vendor. Valid values are: 'twitter' / 'twemoji', 'google' / 'notocolor', and 'system' / 'none'")
                },
                SkipDriveWaiting = inputOptions.SkipDriveWaiting,
                EmoteScale = inputOptions.ScaleEmote,
                BadgeScale = inputOptions.ScaleBadge,
                EmojiScale = inputOptions.ScaleEmoji,
                VerticalSpacingScale = inputOptions.ScaleVertical,
                SidePaddingScale = inputOptions.ScaleLeft,
                SectionHeightScale = inputOptions.ScaleSectionHeight,
                WordSpacingScale = inputOptions.ScaleWordSpace,
                EmoteSpacingScale = inputOptions.ScaleEmoteSpace,
                AccentIndentScale = inputOptions.ScaleAccentIndent,
                AccentStrokeScale = inputOptions.ScaleAccentStroke,
                DisperseCommentOffsets = inputOptions.DisperseCommentOffsets,
                AlternateMessageBackgrounds = inputOptions.AlternateMessageBackgrounds,
                AdjustUsernameVisibility = (bool)inputOptions.AdjustUsernameVisibility!,
                FileCollisionCallback = collisionHandler.HandleCollisionCallback,
            };

            if (renderOptions.GenerateMask && renderOptions.BackgroundColor.Alpha == 255 && !(renderOptions.AlternateMessageBackgrounds! && renderOptions.AlternateBackgroundColor.Alpha != 255))
            {
                logger.LogWarning("Generate mask option has been selected with an opaque background. You most likely want to set a transparent background with --background-color \"#00000000\"");
            }

            if (renderOptions.ChatHeight % 2 != 0 || renderOptions.ChatWidth % 2 != 0)
            {
                logger.LogWarning("Width and Height MUST be even, rounding up to the nearest even number to prevent errors");
                if (renderOptions.ChatHeight % 2 != 0)
                {
                    renderOptions.ChatHeight++;
                }
                if (renderOptions.ChatWidth % 2 != 0)
                {
                    renderOptions.ChatWidth++;
                }
            }

            if (inputOptions.IgnoreUsersString != "")
            {
                renderOptions.IgnoreUsersArray = inputOptions.IgnoreUsersString.Split(',',
                    StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries);
            }

            if (inputOptions.BannedWordsString != "")
            {
                renderOptions.BannedWordsArray = inputOptions.BannedWordsString.Split(',',
                    StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries);
            }

            return renderOptions;
        }
    }
}