using DeepDrftModels.DTOs;
using Models.Common;
using NetBlocks.Models;

namespace DeepDrftManager.Services;

/// <summary>
/// CMS-side track operations for the Manager host. Every read and write goes over HTTP to the
/// DeepDrftAPI API, which is the single authority over both the SQL metadata store and the
/// binary audio vault. DeepDrftManager holds no in-process data layer.
/// </summary>
public interface ICmsTrackService
{
    /// <summary>
    /// Proxy a WAV upload to DeepDrftAPI. The Content API owns the dual-database write and
    /// returns the persisted track carrying the SQL-assigned <c>Id</c>. A vault-without-SQL
    /// orphan is handled and logged server-side; here it surfaces as a failed result.
    /// <paramref name="originalFileName"/> is the browser's filename, captured at upload time and
    /// stored as metadata; it is not user-editable afterwards.
    /// </summary>
    Task<ResultContainer<TrackDto>> UploadTrackAsync(
        Stream wavStream,
        string fileName,
        string contentType,
        string trackName,
        string artist,
        string? album,
        string? genre,
        string? releaseDate,
        string? originalFileName,
        long createdByUserId,
        CancellationToken ct = default);

    /// <summary>
    /// Delete a track via the Content API, which removes the SQL row then the vault entry.
    /// Maps a 404 to a "Track not found." failure.
    /// </summary>
    Task<Result> DeleteTrackAsync(long id, CancellationToken ct = default);

    /// <summary>
    /// Fetch a page of track metadata from the Content API's <c>GET api/track/page</c>.
    /// </summary>
    Task<ResultContainer<PagedResult<TrackDto>>> GetPagedAsync(
        int page, int pageSize, string? sortColumn, bool sortDescending,
        CancellationToken ct = default);

    /// <summary>
    /// Fetch a single track's metadata from <c>GET api/track/meta/{id}</c>. A 404 returns a
    /// passing result with a null value.
    /// </summary>
    Task<ResultContainer<TrackDto?>> GetByIdAsync(long id, CancellationToken ct = default);

    /// <summary>
    /// Upload a cover-art image to the images vault via <c>POST api/image/upload</c>.
    /// Returns the generated entry key on success. Maps a 400 to a validation failure message.
    /// </summary>
    Task<ResultContainer<string>> UploadImageAsync(
        Stream imageStream,
        string fileName,
        string contentType,
        CancellationToken ct = default);

    /// <summary>
    /// Update a track's metadata via <c>PUT api/track/meta/{id}</c>. EntryKey is immutable and
    /// not part of the update. <paramref name="imagePath"/> is tri-state: <c>null</c> leaves the
    /// cover art unchanged, <c>""</c> clears it, and any other value sets it.
    /// </summary>
    Task<Result> UpdateAsync(
        long id, string trackName, string artist,
        string? album, string? genre, DateOnly? releaseDate,
        string? imagePath = null,
        CancellationToken ct = default);

    /// <summary>
    /// Fetch per-track waveform profile status from <c>GET api/track/waveform-status</c> for the
    /// CMS PreProcessing panel. Unpaged — the admin catalogue is small.
    /// </summary>
    Task<ResultContainer<WaveformStatusDto[]>> GetWaveformStatusAsync(CancellationToken ct = default);

    /// <summary>
    /// Trigger waveform profile generation for a single track via
    /// <c>POST api/track/{entryKey}/waveform</c>. Maps a 404 to a "Track audio not found." failure.
    /// </summary>
    Task<Result> GenerateWaveformProfileAsync(string entryKey, CancellationToken ct = default);
}