using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace Crowdin.Plugin.Operations
{
    using Helpers.PluginLocalization;
    using Models;
    using Models.Settings;
    using Server_API.Serializable.Screenshot;
    using Server_API.Services;

    /// Uploads a screenshot file to Crowdin, creating or updating it by file name.
    public static class UploadScreenshots
    {
        public static async Task<ScreenshotsResult> RunAsync(
            ScreenshotsOptions options,
            IProgress<OperationProgress> progress,
            CancellationToken cancellationToken)
        {
            progress.Report(new OperationProgress(LocalizationHelper.GetLocalStringByKey(LocalKeys.sending_to_server)));

            var screenshotName = Path.GetFileName(options.ScreenshotPath);

            var storageService = new StorageApiService();
            StorageData storage = await storageService.CreateStorage(screenshotName, options.ScreenshotPath, cancellationToken);

            var screenshotService = new ScreenshotsApiService();
            List<ScreenshotResultData> screenshots = await screenshotService.ListScreenshots(cancellationToken);
            ScreenshotResultData existing = screenshots.FirstOrDefault(data => data.name == screenshotName);

            int uploaded = 0;
            int updated = 0;

            ScreenshotResultData result;
            if (existing is null)
            {
                result = await screenshotService.AddScreenshot(
                    new AddScreenshotQueryData { storageId = storage.id, name = screenshotName },
                    cancellationToken);
                uploaded = 1;
            }
            else
            {
                result = await screenshotService.UpdateScreenshot(
                    existing.id,
                    new UpdateScreenshotQueryData { storageId = storage.id, name = screenshotName },
                    cancellationToken);
                updated = 1;
            }

            progress.Report(new OperationProgress(
                LocalizationHelper.GetLocalStringByKey(LocalKeys.saved_screenshot, result.name)));

            return new ScreenshotsResult(uploaded, updated);
        }
    }
}