using System.Text.Json.Serialization;

namespace MAF1.PluginContract;

/// <summary>
/// 每个插件目录里的 plugin.json。网页宿主扫描这个文件来画节点端口，不会加载插件 DLL。
/// Id 会出现在画布节点的 Type 上。
/// </summary>
public sealed class PluginManifest
{
    public string Id { get; set; } = "";
    public string Name { get; set; } = "";
    public string Description { get; set; } = "";
    public string Version { get; set; } = "1.0.0";
    public PluginLaunch Launch { get; set; } = new();
    public int TimeoutSeconds { get; set; }
    public Dictionary<string, string> Env { get; set; } = new(StringComparer.OrdinalIgnoreCase);
    public List<PluginCredentialNeed> Credentials { get; set; } = [];
    public List<PluginPort> Inputs { get; set; } = [];
    public List<PluginPort> Outputs { get; set; } = [];
}

/// <summary>如何启动插件进程。Command 可以是相对插件目录的 exe，或 dotnet + dll。</summary>
public sealed class PluginLaunch
{
    public string Command { get; set; } = "";
    public List<string> Args { get; set; } = [];
}

/// <summary>画布上的一个输入或输出端口。Name 必须和代码里读写的字段一致。</summary>
public sealed class PluginPort
{
    public string Name { get; set; } = "";
    public string Type { get; set; } = "string";
    public string Description { get; set; } = "";
    public bool Required { get; set; }
}

/// <summary>插件声明「我需要哪种凭据」。宿主按 Type 注入，Key 不进流程图 JSON。</summary>
public sealed class PluginCredentialNeed
{
    public string Name { get; set; } = "";
    public string Type { get; set; } = "";
    public bool Required { get; set; } = true;
    public string Description { get; set; } = "";
}

/// <summary>宿主写入插件 stdin 的整包请求：业务输入 + 凭据。</summary>
public sealed class PluginRequest
{
    public Dictionary<string, object?> Inputs { get; set; } = new(StringComparer.OrdinalIgnoreCase);

    [JsonPropertyName("credentials")]
    public Dictionary<string, PluginCredentialPayload> Credentials { get; set; } = new(StringComparer.OrdinalIgnoreCase);
}

/// <summary>实际的 endpoint / apiKey / model。只在宿主→插件进程之间传递。</summary>
public sealed class PluginCredentialPayload
{
    public string Id { get; set; } = "";
    public string Type { get; set; } = "";
    public string? Endpoint { get; set; }
    public string? ApiKey { get; set; }
    public string? Model { get; set; }
    public Dictionary<string, string> Extra { get; set; } = new(StringComparer.OrdinalIgnoreCase);
}

/// <summary>插件 JSON 统一 camelCase，和网页前端字段名对齐。</summary>
public static class PluginJson
{
    public static readonly System.Text.Json.JsonSerializerOptions Options = new()
    {
        PropertyNameCaseInsensitive = true,
        PropertyNamingPolicy = System.Text.Json.JsonNamingPolicy.CamelCase,
        WriteIndented = false,
        DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
    };
}