@page "/settings/migration"
@using Iceshrimp.Frontend.Core.Services
@using Iceshrimp.Frontend.Localization
@using Microsoft.AspNetCore.Authorization
@using Microsoft.Extensions.Localization
@using Microsoft.AspNetCore.Components.Sections
@using Iceshrimp.Assets.PhosphorIcons
@using Iceshrimp.Shared.Schemas.Web
@using Iceshrimp.Frontend.Components
@using Iceshrimp.Frontend.Core.Miscellaneous

@attribute [Authorize]
@layout SettingsLayout
@inject ApiService                     Api;
@inject GlobalComponentSvc             Global;
@inject IStringLocalizer<Localization> Loc;
@inject NavigationManager              Nav;

<HeadTitle Text="@Loc["Migration"]"/>

<SectionContent SectionName="top-bar">
    <Icon Name="Icons.AirplaneTakeoff"></Icon>
    @Loc["Migration"]
</SectionContent>

@if (State is State.Loaded)
{
    <div class="body">
        <div class="section">
            <h3>@Loc["Move to this account from an older account"]</h3>
            <div class="aliases">
                @foreach (var alias in Status.Aliases)
                {
                    <div class="alias">
                        <a href="@alias" target="_blank">@alias</a>
                        <button class="button" title="@Loc["Remove alias"]" @onclick="() => DeleteAlias(alias)">
                            <Icon Name="Icons.Trash"/>
                        </button>
                    </div>
                }
            </div>
            <div class="new-alias">
                <input class="input" placeholder="@("@old@example.com")" autocomplete="off" @bind="@Alias" @oninput="ResetAliasButtonState"/>
                <StateButton OnClick="AddAlias" ExtraClasses="button" @ref="AliasButton">
                    <Initial>
                        <Icon Name="Icons.Plus"/>
                    </Initial>
                    <Loading>
                        <LoadingSpinner />
                    </Loading>
                    <Failed>
                        <Icon Name="Icons.Warning"/>
                    </Failed>
                    <Success>
                        <Icon Name="Icons.Check"/>
                    </Success>
                </StateButton>
            </div>
        </div>
    </div>
}

@code {
    private MigrationSchemas.MigrationStatusResponse Status      { get; set; } = null!;
    private State                                    State       { get; set; } = State.Loading;
    private StateButton                              AliasButton { get; set; } = null!;
    private string                                   Alias       { get; set; } = "";

    protected override async Task OnInitializedAsync()
    {
        Status = await Api.Migrations.GetMigrationStatusAsync();
        State  = State.Loaded;
    }

    private async Task AddAlias()
    {
        if (string.IsNullOrWhiteSpace(Alias)) return;

        var acct = Alias.Trim().TrimStart('@').Split('@');
        if (string.IsNullOrWhiteSpace(acct[0])) return;

        AliasButton.State = StateButton.StateEnum.Loading;

        try
        {
            var user = await Api.Users.LookupUserAsync(acct[0], acct.Length > 1 ? acct[1] : null);
            await Api.Migrations.AddAliasAsync(new MigrationSchemas.MigrationRequest { UserId = user?.Id });

            Status = await Api.Migrations.GetMigrationStatusAsync();
        }
        catch (ApiException e)
        {
            await Global.NoticeDialog?.Display(e.Response.Message ?? Loc["An unknown error occurred while adding an alias"], NoticeDialog.NoticeType.Error)!;
            AliasButton.State = StateButton.StateEnum.Failed;
            return;
        }

        Alias             = "";
        AliasButton.State = StateButton.StateEnum.Success;
    }

    private async Task DeleteAlias(string uri)
    {
        try
        {
            await Api.Migrations.RemoveAliasAsync(new MigrationSchemas.MigrationRequest { UserUri = uri });
        }
        catch (ApiException e)
        {
            await Global.NoticeDialog?.Display(e.Response.Message ?? Loc["An unknown error occurred while removing an alias"], NoticeDialog.NoticeType.Error)!;
        }

        Status = await Api.Migrations.GetMigrationStatusAsync();
    }

    private void ResetAliasButtonState()
    {
        if (AliasButton.State is StateButton.StateEnum.Failed or StateButton.StateEnum.Success)
            AliasButton.State = StateButton.StateEnum.Initial;
    }
}