AI 项目在线编辑器

<?php
declare(strict_types=1);

$BASE_URL   = 'https://api.openai.com/v1';
$API_KEY    = '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';                          
$MODEL_NAME = 'gpt-5-chat-latest';

$DEFAULTS = [
  'temperature' => 0.2,
  'max_tokens' => 2048,
];

return [
  'id' => 'gpt5',
  'label' => 'gpt5',
  'supports_tools' => true,
  'call' => function(array $messages, array $tools = [], array $options = []) use ($BASE_URL, $API_KEY, $MODEL_NAME, $DEFAULTS): array {

// ✅ Responses API endpoint
    $endpoint = rtrim($BASE_URL, '/\\') . '/responses';

$extraSystem = [
      'role' => 'system',
      'content' => '回答请更完整：给出步骤、要点、必要时补充边界条件与注意事项。',
    ];

$outMessages = $messages;
    array_splice($outMessages, 1, 0, [$extraSystem]);

// 1) 把 system 合并进 instructions（更稳，避免 role=system 的各种差异）
    $instructionsParts = [];
    $chatLike = [];
    foreach ($outMessages as $m) {
      if (!is_array($m)) continue;
      $role = (string)($m['role'] ?? 'user');
      if ($role === 'system') {
        $instructionsParts[] = (string)($m['content'] ?? '');
      } else {
        $chatLike[] = $m;
      }
    }
    $instructions = trim(implode("\n\n", array_filter($instructionsParts)));

// 2) messages -> responses input items
    $input = [];
    foreach ($chatLike as $m) {
      $role = (string)($m['role'] ?? 'user');

// tool 输出：role=tool -> function_call_output item（需要 tool_call_id）
      if ($role === 'tool') {
        $callId = (string)($m['tool_call_id'] ?? $m['call_id'] ?? '');
        $out = $m['content'] ?? '';
        $outStr = is_string($out) ? $out : json_encode($out, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

if ($callId !== '') {
          $input[] = [
            'type' => 'function_call_output',
            'call_id' => $callId,
            'output' => $outStr,
          ];
        } else {
          // 没有 call_id 时兜底成 user 文本，保证链路不崩
          $input[] = [
            'type' => 'message',
            'role' => 'user',
            'content' => [
              ['type' => 'input_text', 'text' => "[tool output]\n" . $outStr],
            ],
          ];
        }
        continue;
      }

// assistant 带 tool_calls：转成 function_call items（保持 call_id）
      if ($role === 'assistant' && isset($m['tool_calls']) && is_array($m['tool_calls'])) {
        foreach ($m['tool_calls'] as $tc) {
          if (!is_array($tc)) continue;
          $fn = $tc['function'] ?? [];
          $callId = (string)($tc['id'] ?? $tc['call_id'] ?? ('call_' . bin2hex(random_bytes(6))));
          $name = (string)($fn['name'] ?? '');
          $args = $fn['arguments'] ?? '';
          $argsStr = is_string($args) ? $args : json_encode($args, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
          if ($name !== '') {
            $input[] = [
              'type' => 'function_call',
              'call_id' => $callId,
              'name' => $name,
              'arguments' => $argsStr,
            ];
          }
        }
        // assistant 的可见文本（如果有）也补一条 message（注意 assistant 需 output_text）
        $txt = (string)($m['content'] ?? '');
        if ($txt !== '') {
          $input[] = [
            'type' => 'message',
            'role' => 'assistant',
            'content' => [
              ['type' => 'output_text', 'text' => $txt],
            ],
          ];
        }
        continue;
      }

// 普通 message：role=user/assistant/developer
      $txt = $m['content'] ?? '';
      $txtStr = is_string($txt) ? $txt : json_encode($txt, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

$contentType = ($role === 'assistant') ? 'output_text' : 'input_text';

$input[] = [
        'type' => 'message',
        'role' => $role,
        'content' => [
          ['type' => $contentType, 'text' => $txtStr],
        ],
      ];
    }

// 3) tools：ChatCompletions 形状 -> Responses 形状（平铺 name/parameters）
    $normalizedTools = [];
    if (!empty($tools)) {
      foreach ($tools as $t) {
        if (!is_array($t)) continue;
        if (($t['type'] ?? '') !== 'function') continue;

if (isset($t['function']) && is_array($t['function'])) {
          $fn = $t['function'];
          $normalizedTools[] = [
            'type' => 'function',
            'name' => (string)($fn['name'] ?? ''),
            'description' => (string)($fn['description'] ?? ''),
            'parameters' => $fn['parameters'] ?? ['type' => 'object', 'properties' => new stdClass()],
            'strict' => (bool)($fn['strict'] ?? false),
          ];
        } else {
          // 已经是 Responses 形状
          $normalizedTools[] = $t;
        }
      }
    }

$payload = [
      'model' => (string)($options['model'] ?? $MODEL_NAME),
      'input' => $input,
      'temperature' => $options['temperature'] ?? $DEFAULTS['temperature'],
      'max_output_tokens' => $options['max_tokens'] ?? $DEFAULTS['max_tokens'],
    ];
    if ($instructions !== '') $payload['instructions'] = $instructions;

if (!empty($normalizedTools)) {
      $payload['tools'] = $normalizedTools;
      $payload['tool_choice'] = 'auto';
      $payload['parallel_tool_calls'] = true;
    }

$headers = ['Content-Type: application/json'];
    if (trim($API_KEY) !== '') $headers[] = 'Authorization: Bearer ' . $API_KEY;

$ch = curl_init($endpoint);
    if ($ch === false) return ['ok' => false, 'error' => 'curl_init failed'];

$json = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
    curl_setopt_array($ch, [
      CURLOPT_POST => true,
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_HTTPHEADER => $headers,
      CURLOPT_POSTFIELDS => $json,
      CURLOPT_CONNECTTIMEOUT => 10,
      CURLOPT_TIMEOUT => 120,
    ]);

$resp = curl_exec($ch);
    $errno = curl_errno($ch);
    $err = curl_error($ch);
    $status = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

if ($errno !== 0) return ['ok' => false, 'error' => 'cURL error: ' . $err];

$data = json_decode((string)$resp, true);
    if (!is_array($data)) return ['ok' => false, 'error' => 'Invalid JSON', 'raw' => (string)$resp];

if ($status < 200 || $status >= 300) {
      $msg = $data['error']['message'] ?? ('HTTP ' . $status);
      return ['ok' => false, 'error' => (string)$msg, 'raw' => $data];
    }

// 4) Responses output -> 原项目 message 结构（content + tool_calls）
    $assistantText = '';
    $toolCalls = [];

$output = $data['output'] ?? [];
    if (is_array($output)) {
      foreach ($output as $item) {
        if (!is_array($item)) continue;

if (($item['type'] ?? '') === 'message' && ($item['role'] ?? '') === 'assistant') {
          $content = $item['content'] ?? [];
          if (is_array($content)) {
            foreach ($content as $c) {
              if (is_array($c) && ($c['type'] ?? '') === 'output_text') {
                $assistantText .= (string)($c['text'] ?? '');
              }
              if (is_array($c) && ($c['type'] ?? '') === 'refusal') {
                $assistantText .= (string)($c['refusal'] ?? '');
              }
            }
          }
        }

if (($item['type'] ?? '') === 'function_call') {
          $toolCalls[] = [
            'id' => (string)($item['call_id'] ?? ('call_' . bin2hex(random_bytes(6)))),
            'type' => 'function',
            'function' => [
              'name' => (string)($item['name'] ?? ''),
              'arguments' => (string)($item['arguments'] ?? ''),
            ],
          ];
        }
      }
    }

$msg = [
      'role' => 'assistant',
      'content' => $assistantText,
    ];
    if (!empty($toolCalls)) {
      $msg['tool_calls'] = $toolCalls;
    }

return ['ok' => true, 'message' => $msg, 'raw' => $data, 'status' => $status];
  },
];

Models

Tools