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

namespace StellaOps.Reachability.FixtureTests.PatchOracle;

/// <summary>
/// Root model for patch-oracle fixture files.
/// </summary>
public sealed record PatchOracleDefinition
{
    [JsonPropertyName("schema_version")]
    public string SchemaVersion { get; init; } = "patch-oracle/v1";

    [JsonPropertyName("id")]
    public required string Id { get; init; }

    [JsonPropertyName("case_ref")]
    public required string CaseRef { get; init; }

    [JsonPropertyName("variant")]
    public required string Variant { get; init; }

    [JsonPropertyName("description")]
    public string? Description { get; init; }

    [JsonPropertyName("expected_functions")]
    public IReadOnlyList<ExpectedFunction> ExpectedFunctions { get; init; } = Array.Empty<ExpectedFunction>();

    [JsonPropertyName("expected_edges")]
    public IReadOnlyList<ExpectedEdge> ExpectedEdges { get; init; } = Array.Empty<ExpectedEdge>();

    [JsonPropertyName("expected_roots")]
    public IReadOnlyList<ExpectedRoot> ExpectedRoots { get; init; } = Array.Empty<ExpectedRoot>();

    [JsonPropertyName("forbidden_functions")]
    public IReadOnlyList<ExpectedFunction> ForbiddenFunctions { get; init; } = Array.Empty<ExpectedFunction>();

    [JsonPropertyName("forbidden_edges")]
    public IReadOnlyList<ExpectedEdge> ForbiddenEdges { get; init; } = Array.Empty<ExpectedEdge>();

    [JsonPropertyName("min_confidence")]
    public double MinConfidence { get; init; } = 0.5;

    [JsonPropertyName("strict_mode")]
    public bool StrictMode { get; init; } = false;

    [JsonPropertyName("created_at")]
    public DateTimeOffset? CreatedAt { get; init; }

    [JsonPropertyName("updated_at")]
    public DateTimeOffset? UpdatedAt { get; init; }
}

/// <summary>
/// Expected function/node in the graph.
/// </summary>
public sealed record ExpectedFunction
{
    [JsonPropertyName("symbol_id")]
    public required string SymbolId { get; init; }

    [JsonPropertyName("lang")]
    public string? Lang { get; init; }

    [JsonPropertyName("kind")]
    public string? Kind { get; init; }

    [JsonPropertyName("purl_pattern")]
    public string? PurlPattern { get; init; }

    [JsonPropertyName("required")]
    public bool Required { get; init; } = true;

    [JsonPropertyName("reason")]
    public string? Reason { get; init; }
}

/// <summary>
/// Expected edge in the graph.
/// </summary>
public sealed record ExpectedEdge
{
    [JsonPropertyName("from")]
    public required string From { get; init; }

    [JsonPropertyName("to")]
    public required string To { get; init; }

    [JsonPropertyName("kind")]
    public string? Kind { get; init; }

    [JsonPropertyName("min_confidence")]
    public double? MinConfidence { get; init; }

    [JsonPropertyName("required")]
    public bool Required { get; init; } = true;

    [JsonPropertyName("reason")]
    public string? Reason { get; init; }
}

/// <summary>
/// Expected root node in the graph.
/// </summary>
public sealed record ExpectedRoot
{
    [JsonPropertyName("id")]
    public required string Id { get; init; }

    [JsonPropertyName("phase")]
    public string? Phase { get; init; }

    [JsonPropertyName("required")]
    public bool Required { get; init; } = true;

    [JsonPropertyName("reason")]
    public string? Reason { get; init; }
}

/// <summary>
/// Index entry for an oracle.
/// </summary>
public sealed record PatchOracleIndexEntry
{
    [JsonPropertyName("id")]
    public required string Id { get; init; }

    [JsonPropertyName("case_ref")]
    public required string CaseRef { get; init; }

    [JsonPropertyName("variant")]
    public required string Variant { get; init; }

    [JsonPropertyName("path")]
    public required string Path { get; init; }
}

/// <summary>
/// Root model for patch-oracle INDEX.json.
/// </summary>
public sealed record PatchOracleIndex
{
    [JsonPropertyName("version")]
    public string Version { get; init; } = "1.0";

    [JsonPropertyName("schema")]
    public string Schema { get; init; } = "patch-oracle/v1";

    [JsonPropertyName("generated_at")]
    public DateTimeOffset? GeneratedAt { get; init; }

    [JsonPropertyName("description")]
    public string? Description { get; init; }

    [JsonPropertyName("oracles")]
    public IReadOnlyList<PatchOracleIndexEntry> Oracles { get; init; } = Array.Empty<PatchOracleIndexEntry>();
}