@page "/"
@page "/{id:guid}"
@using LANCommander.Client.Enums
@using LANCommander.Client.Models
@using System.Diagnostics
@using LANCommander.SDK.Helpers
@inject SDK.Client Client
@inject NavigationManager NavigationManager
@inject LibraryService LibraryService
@inject DownloadService DownloadService
@inject GameService GameService
@inject ModalService ModalService
@inject ImportService ImportService

<div class="library">
    <div class="library-list">
        <Collapse>
            @foreach (var collection in LibraryItems.Where(i => i != null && i.DataItem is Data.Models.Collection))
            {
                <Panel Header="@collection.Name" Key="@collection.Key.ToString()">
                    <AntList DataSource="@collection.Children" TItem="LibraryItem" Class="ant-list-clickable" Size="small">
                        <ListItem OnClick='() => NavigationManager.NavigateTo($"/{context.Key}")'>
                            <div class="library-list-icon">
                                <MediaImage Id="@context.IconId" />
                            </div>
                            <span>@context.Name</span>
                        </ListItem>
                    </AntList>
                </Panel>
            }
        </Collapse>
    </div>

    <div class="game-details">
        @if (SelectedGame != null)
        {
            <div class="game-hero">
                <h1>@SelectedGame.Title</h1>
                @if (SelectedGame.Media.Any(m => m.Type == Data.Enums.MediaType.Background))
                {
                    <MediaImage Id="@(SelectedGame.Media.First(m => m.Type == Data.Enums.MediaType.Background).Id)" Class="game-details-background" />
                }
            </div>
            <div class="game-infobar">
                <Space Direction="@DirectionVHType.Horizontal" Size="@("large")">
                    <SpaceItem>
                        @if (SelectedItem.State == LibraryItemState.NotInstalled)
                        {
                            <Button Type="@ButtonType.Primary" Size="@ButtonSize.Large" Icon="@IconType.Outline.Download" OnClick="() => Install(SelectedItem)">Install</Button>
                        }
                        else if (SelectedItem.State == LibraryItemState.Installed)
                        {
                            <Space Direction="@DirectionVHType.Horizontal">
                                <SpaceItem>
                                    <Button Type="@ButtonType.Primary" Size="@ButtonSize.Large" Icon="@IconType.Outline.CaretRight" OnClick="() => Run(SelectedGame)">Play</Button>
                                </SpaceItem>

                                <SpaceItem>
                                    <Dropdown>
                                        <Overlay>
                                            <Menu>
                                                @if (SelectedGameActions.Count() > 0)
                                                {
                                                    @foreach (var action in SelectedGameActions)
                                                    {
                                                        <MenuItem OnClick="() => LibraryService.Run(SelectedGame, action)">
                                                            @action.Name
                                                        </MenuItem>
                                                    }

                                                    <MenuDivider />
                                                }

                                                <MenuItem OnClick="() => Uninstall(SelectedItem)">
                                                    Uninstall
                                                </MenuItem>
                                            </Menu>
                                        </Overlay>

                                        <ChildContent>
                                            <Button Type="@ButtonType.Default" Size="@ButtonSize.Large" Icon="@IconType.Outline.Ellipsis" />
                                        </ChildContent>
                                    </Dropdown>
                                </SpaceItem>
                            </Space>
                        }
                        else if (SelectedItem.State == LibraryItemState.Queued)
                        {
                            <Button Type="@ButtonType.Primary" Size="@ButtonSize.Large" Icon="@IconType.Outline.Bars" Disabled="true">Queued</Button>
                        }
                        else if (SelectedItem.State == LibraryItemState.UpdateAvailable)
                        {
                            <Button Type="@ButtonType.Primary" Size="@ButtonSize.Large" Icon="@IconType.Outline.Download">Update</Button>
                        }
                        else if (SelectedItem.State == LibraryItemState.Installing)
                        {
                            <Button Type="@ButtonType.Primary" Size="@ButtonSize.Large" Icon="@IconType.Outline.Loading" Disabled="true">Installing</Button>
                        }
                    </SpaceItem>
                    <SpaceItem>
                        <Statistic Title="Play Time" Value="@GetPlayTime(SelectedGame)" />
                    </SpaceItem>
                    <SpaceItem>
                        <Statistic Title="Last Played" Value="@GetLastPlayed(SelectedGame)" />
                    </SpaceItem>
                </Space>
            </div>
        }
    </div>
</div>

@code {
    [Parameter] public Guid Id { get; set; }
    LibraryItem SelectedItem { get; set; }

    Data.Models.Game SelectedGame { get; set; }
    IEnumerable<SDK.Models.Action> SelectedGameActions { get; set; }

    IEnumerable<LibraryItem> LibraryItems { get; set; } = new List<LibraryItem>();

    protected override async Task OnInitializedAsync()
    {
        LibraryService.OnLibraryChanged += LoadData;
        DownloadService.OnQueueChanged += OnQueueChanged;

        LoadData();
    }

    protected override async Task OnParametersSetAsync()
    {
        if (Id != Guid.Empty)
            await OnLibraryItemSelected(LibraryItems.SelectMany(i => i.Children).FirstOrDefault(i => i.Key == Id));

        await InvokeAsync(StateHasChanged);
    }

    async void LoadData()
    {
        LibraryItems = await LibraryService.GetLibraryItemsAsync();

        if (Id != Guid.Empty)
            await OnLibraryItemSelected(LibraryItems.SelectMany(i => i.Children).FirstOrDefault(i => i.Key == Id));

        await InvokeAsync(StateHasChanged);
    }

    async Task OnLibraryItemSelected(LibraryItem item)
    {
        if (item.DataItem is Data.Models.Game)
        {
            SelectedItem = item;
            SelectedGame = item.DataItem as Data.Models.Game;

            if (SelectedItem.State == LibraryItemState.Installed)
                SelectedGameActions = (await GameService.GetActionsAsync(SelectedGame)).Where(a => !a.IsPrimaryAction);
        }
    }

    async Task Install(LibraryItem item)
    {
        await LibraryService.Install(item);
    }

    async Task Uninstall(LibraryItem item)
    {
        var game = item.DataItem as Data.Models.Game;
        var manifest = ManifestHelper.Read(game.InstallDirectory, game.Id);

        var message = $"Would you like to uninstall {game.Title}?";

        if (manifest.SavePaths != null && manifest.SavePaths.Any())
            message += " Your save files have been uploaded to the server.";
        else
            message += " Your save files may be unrecoverable if they are contained within the game's install directory.";

        var confirmed = await ModalService.ConfirmAsync(new ConfirmOptions
        {
            OkText = "Uninstall",
            CancelText = "Cancel",
            Title = "Uninstall",
            Content = message,
            OkType = "danger",
            Icon = @<Icon Type="@IconType.Outline.Delete" />
        });

        if (confirmed)
            await LibraryService.Uninstall(item);
    }

    async Task Run(Data.Models.Game game)
    {
        var actions = await GameService.GetActionsAsync(game);

        var primaryActions = actions.Where(a => a.IsPrimaryAction);

        if (primaryActions.Count() == 1)
            LibraryService.Run(game, primaryActions.First());
        else
        {
            var modalOptions = new ModalOptions()
            {
                Title = game.Title,
                Maximizable = false,
                DefaultMaximized = false,
                Closable = true,
                Footer = null,
                Centered = true,
                WrapClassName = "game-actions-dialog"
            };

            var model = new ActionSelectorDialogOptions
            {
                Actions = actions.Where(a => a.IsPrimaryAction),
                Game = game
            };

            var modalRef = ModalService.CreateModal<ActionSelectorDialog, ActionSelectorDialogOptions, Process>(modalOptions, model);
        }
    }

    async Task OnQueueChanged()
    {
        var queueItem = DownloadService.Queue.FirstOrDefault(i => i.Id == SelectedItem.Key);

        if (queueItem != null)
        {
            SelectedItem = await LibraryService.GetLibraryItemAsync(SelectedItem);

            switch (queueItem.Status)
            {
                case DownloadStatus.Downloading:
                case DownloadStatus.InstallingRedistributables:
                case DownloadStatus.InstallingMods:
                case DownloadStatus.InstallingExpansions:
                case DownloadStatus.RunningScripts:
                case DownloadStatus.DownloadingSaves:
                    SelectedItem.State = LibraryItemState.Installing;
                    break;

                case DownloadStatus.Idle:
                    SelectedItem.State = LibraryItemState.Queued;
                    break;

                case DownloadStatus.Failed:
                case DownloadStatus.Canceled:
                    SelectedItem.State = LibraryItemState.NotInstalled;
                    break;

                case DownloadStatus.Complete:
                    SelectedItem.State = LibraryItemState.Installed;
                    break;
            }

            await OnLibraryItemSelected(SelectedItem);

            await InvokeAsync(StateHasChanged);
        }
    }

    string GetPlayTime(Data.Models.Game game)
    {
        var totalTime = new TimeSpan(game.PlaySessions
            .Where(ps => ps.End != null && ps.Start != null)
            .Select(ps => ps.End.Value.Subtract(ps.Start.Value))
            .Sum(ts => ts.Ticks));

        return totalTime.TotalHours.ToString("0.##") + " hours";
    }

    string GetLastPlayed(Data.Models.Game game)
    {
        var lastSession = game.PlaySessions.Where(ps => ps.End != null && ps.Start != null).OrderByDescending(ps => ps.End).FirstOrDefault();

        if (lastSession != null)
            return lastSession.End.Value.ToString("MMMM d");
        else
            return "Never";
    }
}