using System.Text.Json.Serialization;

namespace Purrse.Core.DTOs;

// API DTOs
public record SendChatMessageRequest(Guid? ConversationId, string Message);

public record SendChatMessageResponse(Guid ConversationId, ChatMessageResponse AssistantMessage);

public record ChatMessageResponse(
    Guid Id,
    string Role,
    string Content,
    string? ToolResultType,
    string? ToolResultJson,
    DateTime CreatedAt
);

public record ChatConversationResponse(
    Guid Id,
    string? Title,
    DateTime CreatedAt,
    DateTime UpdatedAt
);

public record ChatConversationDetailResponse(
    Guid Id,
    string? Title,
    List<ChatMessageResponse> Messages,
    DateTime CreatedAt,
    DateTime UpdatedAt
);

// Ollama tool-calling DTOs (separate from existing OllamaChatRequest to avoid breaking categorization)
public class OllamaToolChatRequest
{
    [JsonPropertyName("model")]
    public string Model { get; set; } = string.Empty;

    [JsonPropertyName("messages")]
    public List<OllamaToolMessage> Messages { get; set; } = new();

    [JsonPropertyName("stream")]
    public bool Stream { get; set; }

    [JsonPropertyName("tools")]
    public List<OllamaTool>? Tools { get; set; }
}

public class OllamaToolMessage
{
    [JsonPropertyName("role")]
    public string Role { get; set; } = string.Empty;

    [JsonPropertyName("content")]
    public string Content { get; set; } = string.Empty;

    [JsonPropertyName("tool_calls")]
    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
    public List<OllamaToolCall>? ToolCalls { get; set; }
}

public class OllamaTool
{
    [JsonPropertyName("type")]
    public string Type { get; set; } = "function";

    [JsonPropertyName("function")]
    public OllamaFunction Function { get; set; } = new();
}

public class OllamaFunction
{
    [JsonPropertyName("name")]
    public string Name { get; set; } = string.Empty;

    [JsonPropertyName("description")]
    public string Description { get; set; } = string.Empty;

    [JsonPropertyName("parameters")]
    public OllamaFunctionParameters Parameters { get; set; } = new();
}

public class OllamaFunctionParameters
{
    [JsonPropertyName("type")]
    public string Type { get; set; } = "object";

    [JsonPropertyName("properties")]
    public Dictionary<string, OllamaPropertySchema> Properties { get; set; } = new();

    [JsonPropertyName("required")]
    public List<string>? Required { get; set; }
}

public class OllamaPropertySchema
{
    [JsonPropertyName("type")]
    public string Type { get; set; } = "string";

    [JsonPropertyName("description")]
    public string Description { get; set; } = string.Empty;

    [JsonPropertyName("enum")]
    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
    public List<string>? Enum { get; set; }
}

public class OllamaToolCall
{
    [JsonPropertyName("function")]
    public OllamaToolCallFunction Function { get; set; } = new();
}

public class OllamaToolCallFunction
{
    [JsonPropertyName("name")]
    public string Name { get; set; } = string.Empty;

    [JsonPropertyName("arguments")]
    public Dictionary<string, object> Arguments { get; set; } = new();
}

public class OllamaToolChatResponse
{
    [JsonPropertyName("message")]
    public OllamaToolResponseMessage? Message { get; set; }

    [JsonPropertyName("done")]
    public bool Done { get; set; }
}

public class OllamaToolResponseMessage
{
    [JsonPropertyName("role")]
    public string Role { get; set; } = string.Empty;

    [JsonPropertyName("content")]
    public string Content { get; set; } = string.Empty;

    [JsonPropertyName("tool_calls")]
    public List<OllamaToolCall>? ToolCalls { get; set; }
}