using IdokladSdk.Enums;
using IdokladSdk.Models.Report;
using Idoklad.Client;

namespace Idoklad.Services;

/// <summary>
/// Document PDF exports (iDoklad Reports). Each method returns the report as a Base64-encoded
/// string — the iDoklad API's native representation; decode it to obtain the raw PDF bytes.
/// </summary>
public sealed class ReportsService
{
    private readonly IdokladApiAccessor _accessor;

    public ReportsService(IdokladApiAccessor accessor) => _accessor = accessor;

    /// <summary>Export an issued invoice as a Base64-encoded PDF.</summary>
    public async Task<string> IssuedInvoicePdfAsync(int id, Language? language, bool compressed, CancellationToken ct)
        => (await _accessor.Api.ReportClient.IssuedInvoice.Detail(id).GetAsync(Option(language, compressed), ct)).Unwrap();

    /// <summary>Export a proforma (advance) invoice as a Base64-encoded PDF.</summary>
    public async Task<string> ProformaInvoicePdfAsync(int id, Language? language, bool compressed, CancellationToken ct)
        => (await _accessor.Api.ReportClient.ProformaInvoice.Detail(id).GetAsync(Option(language, compressed), ct)).Unwrap();

    /// <summary>Export a credit note as a Base64-encoded PDF.</summary>
    public async Task<string> CreditNotePdfAsync(int id, Language? language, bool compressed, CancellationToken ct)
        => (await _accessor.Api.ReportClient.CreditNote.Detail(id).GetAsync(Option(language, compressed), ct)).Unwrap();

    private static ExtendedReportOption Option(Language? language, bool compressed)
        => new() { Language = language, Compressed = compressed };
}