// This file is auto-generated by alef — DO NOT EDIT.
// alef:hash:4e15143f4af1ae8bafbdb1506ef057da924484c66a19483966333558ad437e75
// To regenerate: alef generate
// To verify freshness: alef verify --exit-code
// Issues & docs: https://github.com/kreuzberg-dev/alef
#nullable enable

using System;
using System.Collections.Generic;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace Kreuzberg;

/// <summary>
/// Excel workbook representation.
///
/// Contains all sheets from an Excel file (.xlsx, .xls, etc.) with
/// extracted content and metadata.
/// </summary>
public sealed record ExcelWorkbook
{
    /// <summary>
    /// All sheets in the workbook
    /// </summary>
    [JsonPropertyName("sheets")]
    public List<ExcelSheet> Sheets { get; init; } = [];

    /// <summary>
    /// Workbook-level metadata (author, creation date, etc.)
    /// </summary>
    [JsonPropertyName("metadata")]
    public Dictionary<string, string> Metadata { get; init; } = default!;

    /// <summary>
    /// Collaborative-edit revision headers from `xl/revisions/revisionHeaders.xml`.
    ///
    /// Populated for legacy shared-workbook `.xlsx` files that contain the
    /// `xl/revisions/` directory. Each `&lt;header&gt;` element maps to one
    /// `DocumentRevision { kind: FormatChange }` carrying the header's `guid`
    /// (→ `revision_id`), `userName` (→ `author`), and `dateTime` (→ `timestamp`).
    /// `anchor` and `delta` are `None`/empty for v1 (per-cell log parsing is a
    /// follow-up). `None` when `xl/revisions/revisionHeaders.xml` is absent.
    /// </summary>
    [JsonPropertyName("revisions")]
    public List<DocumentRevision>? Revisions { get; init; } = null;


    /// <summary>
    /// Parse a <see cref="ExcelWorkbook"/> from a JSON string.
    /// </summary>
    /// <exception cref="KreuzbergException">When the JSON cannot be deserialised.</exception>
    public static ExcelWorkbook FromJson(string json)
    {
        try
        {
            return JsonSerializer.Deserialize<ExcelWorkbook>(json, JsonOptions)
                ?? throw new KreuzbergException($"Failed to parse ExcelWorkbook from JSON: deserializer returned null");
        }
        catch (KreuzbergException)
        {
            throw;
        }
        catch (Exception e)
        {
            throw new KreuzbergException($"Failed to parse ExcelWorkbook from JSON: {e.Message}", e);
        }
    }

    private static readonly JsonSerializerOptions JsonOptions = new()
    {
        DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingDefault,
        Converters = { new JsonStringEnumConverter(JsonNamingPolicy.SnakeCaseLower) },
    };

    /// <summary>Options for serializing config/input objects to FFI. Strips nulls
    /// (nullable C# fields default to null and would override required Rust fields with
    /// non-deserialisable nulls) but preserves explicit false/0 so caller intent is kept.</summary>
    private static readonly JsonSerializerOptions JsonSerializationOptions = new()
    {
        DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
        Converters = { new JsonStringEnumConverter(JsonNamingPolicy.SnakeCaseLower) },
    };
}
