// 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>
/// Processing options for tree-sitter code analysis.
///
/// Controls which analysis features are enabled when extracting code files.
/// </summary>
public sealed record TreeSitterProcessConfig
{
    /// <summary>
    /// Extract structural items (functions, classes, structs, etc.). Default: true.
    /// </summary>
    [JsonPropertyName("structure")]
    public bool Structure { get; init; } = true;

    /// <summary>
    /// Extract import statements. Default: true.
    /// </summary>
    [JsonPropertyName("imports")]
    public bool Imports { get; init; } = true;

    /// <summary>
    /// Extract export statements. Default: true.
    /// </summary>
    [JsonPropertyName("exports")]
    public bool Exports { get; init; } = true;

    /// <summary>
    /// Extract comments. Default: false.
    /// </summary>
    [JsonPropertyName("comments")]
    public bool Comments { get; init; } = false;

    /// <summary>
    /// Extract docstrings. Default: false.
    /// </summary>
    [JsonPropertyName("docstrings")]
    public bool Docstrings { get; init; } = false;

    /// <summary>
    /// Extract symbol definitions. Default: false.
    /// </summary>
    [JsonPropertyName("symbols")]
    public bool Symbols { get; init; } = false;

    /// <summary>
    /// Include parse diagnostics. Default: false.
    /// </summary>
    [JsonPropertyName("diagnostics")]
    public bool Diagnostics { get; init; } = false;

    /// <summary>
    /// Maximum chunk size in bytes. `None` disables chunking.
    /// </summary>
    [JsonPropertyName("chunk_max_size")]
    public ulong? ChunkMaxSize { get; init; } = null;

    /// <summary>
    /// Content rendering mode for code extraction.
    /// </summary>
    [JsonPropertyName("content_mode")]
    public CodeContentMode? ContentMode { get; init; } = null;


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

    public static TreeSitterProcessConfig Default()
    {
        var nativeResult = NativeMethods.TreeSitterProcessConfigDefault();
        var jsonPtr = NativeMethods.TreeSitterProcessConfigToJson(nativeResult);
        var json = global::System.Runtime.InteropServices.Marshal.PtrToStringUTF8(jsonPtr);
        NativeMethods.FreeString(jsonPtr);
        NativeMethods.TreeSitterProcessConfigFree(nativeResult);
        return JsonSerializer.Deserialize<TreeSitterProcessConfig>(json ?? "null", JsonOptions)!;
    }
}
