using System.Text.Json;
using Xunit;

namespace Admin.NET.Plugin.AiDOP.Tests.S8;

/// <summary>
/// S8NotificationLogQueryService.MapToDto payload 解析契约（S8-NOTIFY-AUDIT-LOG-API-1）
/// MapToDto 是 private；此处复刻相同解析逻辑作等价契约测试。
/// </summary>
public class S8NotificationLogPayloadParseTests
{
    private static (bool? success, bool? recovered, int? targetCount, string? error) ParsePayload(string? payload)
    {
        if (string.IsNullOrWhiteSpace(payload)) return (null, null, null, null);
        try
        {
            using var doc = JsonDocument.Parse(payload);
            var root = doc.RootElement;

            bool? success = null;
            if (root.TryGetProperty("success", out var sv) && (sv.ValueKind == JsonValueKind.True || sv.ValueKind == JsonValueKind.False))
                success = sv.GetBoolean();

            bool? recovered = null;
            if (root.TryGetProperty("recovered", out var rv) && (rv.ValueKind == JsonValueKind.True || rv.ValueKind == JsonValueKind.False))
                recovered = rv.GetBoolean();

            int? targetCount = null;
            if (root.TryGetProperty("targetCount", out var tc) && tc.ValueKind == JsonValueKind.Number)
                targetCount = tc.GetInt32();

            string? error = null;
            if (root.TryGetProperty("error", out var ev) && ev.ValueKind == JsonValueKind.String)
                error = ev.GetString();

            return (success, recovered, targetCount, error);
        }
        catch { return (null, null, null, null); }
    }

    [Fact]
    public void CreatedPayload_ParsesAllFields()
    {
        var json = "{\"title\":\"T\",\"recovered\":false,\"success\":true,\"targetCount\":3,\"error\":null}";
        var (success, recovered, targetCount, error) = ParsePayload(json);
        Assert.True(success);
        Assert.False(recovered);
        Assert.Equal(3, targetCount);
        Assert.Null(error);
    }

    [Fact]
    public void RecoveredPayload_RecoveredTrue()
    {
        var json = "{\"recovered\":true,\"success\":true,\"targetCount\":1,\"error\":null}";
        var (success, recovered, targetCount, _) = ParsePayload(json);
        Assert.True(success);
        Assert.True(recovered);
        Assert.Equal(1, targetCount);
    }

    [Fact]
    public void FailedPush_SuccessFalse_ErrorPresent()
    {
        var json = "{\"recovered\":false,\"success\":false,\"targetCount\":0,\"error\":\"channel_disabled_by_config\"}";
        var (success, recovered, _, error) = ParsePayload(json);
        Assert.False(success);
        Assert.False(recovered);
        Assert.Equal("channel_disabled_by_config", error);
    }

    [Fact]
    public void NullPayload_ReturnsAllNull()
    {
        var (success, recovered, targetCount, error) = ParsePayload(null);
        Assert.Null(success);
        Assert.Null(recovered);
        Assert.Null(targetCount);
        Assert.Null(error);
    }

    [Fact]
    public void InvalidJson_ReturnsAllNull_NoBoomNoThrow()
    {
        var (success, recovered, targetCount, error) = ParsePayload("not-json{{{");
        Assert.Null(success);
        Assert.Null(recovered);
        Assert.Null(targetCount);
        Assert.Null(error);
    }

    [Fact]
    public void TruncatedPayload_ReturnsAllNull()
    {
        var (success, recovered, targetCount, error) = ParsePayload("{\"recovered\":true,\"success\":tru...");
        Assert.Null(success);
        Assert.Null(recovered);
        Assert.Null(targetCount);
        Assert.Null(error);
    }
}