<?php

namespace App\Data\Chats;

use App\Models\ChatMessage;
use Carbon\CarbonInterface;
use Illuminate\Database\Eloquent\Model;
use Laravel\Ai\Messages\AssistantMessage;
use Laravel\Ai\Responses\AgentResponse;
use Laravel\Ai\Responses\TextResponse;

final readonly class MessageDto
{
    public function __construct(
        public string $id,
        public string $conversationId,
        public string $role,
        public string $content,
        public string $agent,
        public array $attachments,
        public array $toolCalls,
        public array $toolResults,
        public array $usage,
        public array $meta,
        public CarbonInterface $createdAt,
        public CarbonInterface $updatedAt,
    ) {}

    public static function fromModel(ChatMessage|Model $message): MessageDto
    {
        return new self(
            id: $message->id,
            conversationId: $message->conversation_id,
            role: $message->role,
            content: $message->content,
            agent: $message->agent,
            attachments: $message->attachments,
            toolCalls: $message->tool_calls,
            toolResults: $message->tool_results,
            usage: $message->usage,
            meta: $message->meta,
            createdAt: $message->created_at,
            updatedAt: $message->updated_at,
        );
    }

    public static function fromAgentResponse(AgentResponse|TextResponse $response, string $agent): MessageDto
    {
        /** @var AssistantMessage $message */
        $message = $response->messages->first();

        return new self(
            id: $response->invocationId,
            conversationId: $response->conversationId,
            role: $message->role->value,
            content: $message->content,
            agent: $agent,
            attachments: [],
            toolCalls: $response->toolCalls->toArray(),
            toolResults: $response->toolResults->toArray(),
            usage: $response->usage->toArray(),
            meta: $response->meta->toArray(),
            createdAt: now(),
            updatedAt: now(),
        );
    }
}