// 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>
/// Block-level element in a Djot document.
///
/// Represents structural elements like headings, paragraphs, lists, code blocks, etc.
/// </summary>
public sealed record FormattedBlock
{
    /// <summary>
    /// Type of block element
    /// </summary>
    [JsonPropertyName("block_type")]
    public required BlockType BlockType { get; init; }

    /// <summary>
    /// Heading level (1-6) for headings, or nesting level for lists
    /// </summary>
    [JsonPropertyName("level")]
    public ulong? Level { get; init; } = null;

    /// <summary>
    /// Inline content within the block
    /// </summary>
    [JsonPropertyName("inline_content")]
    public List<InlineElement> InlineContent { get; init; } = [];

    /// <summary>
    /// Element attributes (classes, IDs, key-value pairs)
    /// </summary>
    [JsonPropertyName("attributes")]
    public string? Attributes { get; init; } = null;

    /// <summary>
    /// Language identifier for code blocks
    /// </summary>
    [JsonPropertyName("language")]
    public string? Language { get; init; } = null;

    /// <summary>
    /// Raw code content for code blocks
    /// </summary>
    [JsonPropertyName("code")]
    public string? Code { get; init; } = null;

    /// <summary>
    /// Nested blocks for containers (blockquotes, list items, divs)
    /// </summary>
    [JsonPropertyName("children")]
    public List<FormattedBlock> Children { get; init; } = [];


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