<?php

namespace Leantime\Domain\Ai\Controllers;

use Illuminate\Http\Request;
use Leantime\Domain\Ai\Services\AiChat;
use Symfony\Component\HttpFoundation\Response;

/**
 * 界面内 AI 聊天 JSON API（原生 Laravel 控制器）。
 * 前端右下角悬浮窗发 {messages}，后端代理 DeepSeek/千问并执行工具调用。
 */
class ChatApi
{
    public function __construct(
        private AiChat $aiChat,
    ) {}

    /**
     * POST /ai/chat
     */
    public function chat(Request $request): Response
    {
        $messages = $request->input('messages', []);

        if (! is_array($messages) || empty($messages)) {
            return response()->json(['status' => 'error', 'message' => 'messages 不能为空'], 400);
        }

        // 只保留 role/content 字段，防止注入多余字段
        $clean = [];
        foreach ($messages as $m) {
            if (is_array($m) && isset($m['role'])) {
                $clean[] = [
                    'role' => (string) $m['role'],
                    'content' => (string) ($m['content'] ?? ''),
                ];
            }
        }

        $result = $this->aiChat->chat($clean);

        return $result['success']
            ? response()->json(['status' => 'success', 'content' => $result['content']])
            : response()->json(['status' => 'error', 'message' => $result['error'] ?? 'AI 调用失败'], 500);
    }

    /**
     * GET /ai/config —— 返回当前 AI 配置（脱敏，apiKey 只显示前 6 位 + 掩码）。
     */
    public function config(): Response
    {
        $cfg = $this->aiChat->publicConfig();

        return response()->json(['status' => 'success', 'data' => $cfg]);
    }
}