import { stripKnownChatSkillPrompt } from './chat-skills.mjs';

/**
 * Strip agent-only prefixes from persisted user messages for UI display.
 * Regression guard — see docs/regression-guards/mindspace-publish-and-chat-finish.md
 */

export const TASK_ROUTING_HINT_RE = /^【TKMind 路由提示】[\s\S]*?\n\n/;
export const MEMIND_TASK_ORCHESTRATION_RE = /^【Memind 任务编排】[\s\S]*?(?:用户任务：|用户任务:)\s*/u;
export const MINDSPACE_CONTEXT_RE = /^\[MindSpace 上下文\][\s\S]*?\n\n/;
export const IMAGE_TURN_SCOPE_SUFFIX_RE =
  /\n*【本轮图片主题（硬性）】[\s\S]*$/u;
const USER_IDENTITY_BLOCK_RE = /^\[用户身份\][\s\S]*?\n\n/;

export function stripUserIdentityPrefix(text) {
  return String(text ?? '').replace(USER_IDENTITY_BLOCK_RE, '').trimStart();
}

export function stripTaskRoutingHint(text) {
  return String(text ?? '').replace(TASK_ROUTING_HINT_RE, '').trimStart();
}

export function stripMemindTaskOrchestrationPrefix(text) {
  return String(text ?? '').replace(MEMIND_TASK_ORCHESTRATION_RE, '').trimStart();
}

export function stripMindSpaceContextPrefix(text) {
  let next = String(text ?? '');
  while (MINDSPACE_CONTEXT_RE.test(next)) {
    next = next.replace(MINDSPACE_CONTEXT_RE, '').trimStart();
  }
  return next;
}

/** MindSpace 交付链接：生产域名与本地 dev（127.0.0.1 / localhost）都必须可点击，不可被架构脱敏替换。 */
export const MINDSPACE_DELIVERABLE_ORIGIN_RE =
  '(?:127\\.0\\.0\\.1|localhost):\\d+|(?:m\\.)?[^/\\s]*tkmind\\.(?:cn|ai)';

const ASSISTANT_DELIVERABLE_RE = new RegExp(
  [
    '\\[[^\\]]+\\]\\(https?:\\/\\/[^)]+\\)',
    `https?:\\/\\/${MINDSPACE_DELIVERABLE_ORIGIN_RE}\\/MindSpace\\/`,
  ].join('|'),
  'i',
);

const INTERNAL_ASSISTANT_MARKERS = [
  /data-mindspace-page-tag/i,
  /mindspace-cover/i,
  /\bload_skill\b/i,
  /static-page-publish/i,
  /\.agents\/skills/i,
  /SKILL\.md/i,
  /注意到技能/u,
  /技能更新/u,
  /页脚要用.*platform-brand/u,
];

/** Replace internal architecture / vendor names before showing assistant text to users. */
export const USER_FACING_ARCHITECTURE_TERM_REPLACEMENTS = Object.freeze([
  [/duck\s*duck\s*go|\bduckduckgo\b|\bddg\b/gi, '联网搜索'],
  [/\bsearxng\b|\bsearx\b/gi, '联网搜索'],
  [/\bgoosed\b|\bgoose\b/gi, '助手'],
  [/\bcolima\b|\bdocker\b|\bkubernetes\b|\bk8s\b/gi, '运行环境'],
  [/\b(?:stdio\s*)?mcp\b|\btkmind-search\b|\bsandbox-fs\b/gi, '工具扩展'],
  [/\bopenhands\b|\baider\b|\blitellm\b/gi, '代码助手'],
  [/\borchestrator\b|\bmemindadm\b|\bportal\b(?=\s*(?:api|server|runtime|8081|8085))/gi, '后台服务'],
  [/host\.docker\.internal|127\.0\.0\.1:\d{4,5}/gi, '本地服务'],
  [/platform\/web|web_search|fetch_url|tkmind_search|tkmind_read/gi, '联网搜索'],
  [/\bpostgres(?:ql)?\b|\bredis\b|\bmysql\b|\bweaviate\b/gi, '数据服务'],
]);

export const USER_FACING_ARCHITECTURE_LANGUAGE_RULE =
  '- 向用户回复时禁止出现内部实现、架构、供应商或运行时名称（搜索引擎品牌、中间件、容器平台、MCP、编排/代理/代码执行器名称等）；统一说「联网搜索」「搜索服务」「助手」「数据服务」';

/** Strip or neutralize architecture terms from assistant replies shown in chat UI. */
export function redactUserFacingArchitectureTerms(text) {
  let next = String(text ?? '');
  const protectedSegments = [];
  const protect = (match) => {
    const token = `__MINDSPACE_DELIVERABLE_${protectedSegments.length}__`;
    protectedSegments.push(match);
    return token;
  };
  next = next.replace(
    new RegExp(
      `\\[[^\\]]+\\]\\(https?:\\/\\/${MINDSPACE_DELIVERABLE_ORIGIN_RE}\\/MindSpace\\/[^)]+\\)`,
      'gi',
    ),
    protect,
  );
  next = next.replace(
    new RegExp(
      `https?:\\/\\/${MINDSPACE_DELIVERABLE_ORIGIN_RE}\\/MindSpace\\/[^\\s)]+`,
      'gi',
    ),
    protect,
  );
  for (const [pattern, replacement] of USER_FACING_ARCHITECTURE_TERM_REPLACEMENTS) {
    next = next.replace(pattern, replacement);
  }
  for (const [index, segment] of protectedSegments.entries()) {
    next = next.replace(`__MINDSPACE_DELIVERABLE_${index}__`, segment);
  }
  return next.replace(/[ \t]{2,}/g, ' ').replace(/\n{3,}/g, '\n\n').trim();
}

/** Agent-only process narration that should not appear in the chat UI. */
export function isInternalAssistantProcessNarration(text) {
  const trimmed = String(text ?? '').trim();
  if (!trimmed) return false;
  if (ASSISTANT_DELIVERABLE_RE.test(trimmed)) return false;
  return INTERNAL_ASSISTANT_MARKERS.some((pattern) => pattern.test(trimmed));
}

export function deriveAssistantFacingText(text) {
  const trimmed = String(text ?? '').trim();
  if (!trimmed) return '';
  if (isInternalAssistantProcessNarration(trimmed)) return '';
  return redactUserFacingArchitectureTerms(trimmed);
}

/** Strip agent-only prefixes from persisted user message content for UI display. */
export function deriveUserFacingText(text) {
  let next = String(text ?? '');
  next = next.replace(IMAGE_TURN_SCOPE_SUFFIX_RE, '');
  next = stripUserIdentityPrefix(next);
  next = stripTaskRoutingHint(next);
  next = stripMemindTaskOrchestrationPrefix(next);
  next = stripMindSpaceContextPrefix(next);
  next = stripKnownChatSkillPrompt(next);
  return next.trim();
}