import type { ClawdbotConfig } from "../../config/config.js";
import { sanitizeUserFacingText } from "../pi-embedded-helpers.js";
import {
  stripDowngradedToolCallText,
  stripMinimaxToolCallXml,
  stripThinkingTagsFromText,
} from "../pi-embedded-utils.js";
import { normalizeMainKey } from "../../routing/session-key.js";

export type SessionKind = "main" | "group" | "cron" | "hook" | "node" | "other";

export type SessionListDeliveryContext = {
  channel?: string;
  to?: string;
  accountId?: string;
};

export type SessionListRow = {
  key: string;
  kind: SessionKind;
  channel: string;
  label?: string;
  displayName?: string;
  deliveryContext?: SessionListDeliveryContext;
  updatedAt?: number | null;
  sessionId?: string;
  model?: string;
  contextTokens?: number | null;
  totalTokens?: number | null;
  thinkingLevel?: string;
  verboseLevel?: string;
  systemSent?: boolean;
  abortedLastRun?: boolean;
  sendPolicy?: string;
  lastChannel?: string;
  lastTo?: string;
  lastAccountId?: string;
  transcriptPath?: string;
  messages?: unknown[];
};

function normalizeKey(value?: string) {
  const trimmed = value?.trim();
  return trimmed ? trimmed : undefined;
}

export function resolveMainSessionAlias(cfg: ClawdbotConfig) {
  const mainKey = normalizeMainKey(cfg.session?.mainKey);
  const scope = cfg.session?.scope ?? "per-sender";
  const alias = scope === "global" ? "global" : mainKey;
  return { mainKey, alias, scope };
}

export function resolveDisplaySessionKey(params: { key: string; alias: string; mainKey: string }) {
  if (params.key === params.alias) return "main";
  if (params.key === params.mainKey) return "main";
  return params.key;
}

export function resolveInternalSessionKey(params: { key: string; alias: string; mainKey: string }) {
  if (params.key === "main") return params.alias;
  return params.key;
}

export function classifySessionKind(params: {
  key: string;
  gatewayKind?: string | null;
  alias: string;
  mainKey: string;
}): SessionKind {
  const key = params.key;
  if (key === params.alias || key === params.mainKey) return "main";
  if (key.startsWith("cron:")) return "cron";
  if (key.startsWith("hook:")) return "hook";
  if (key.startsWith("node-") || key.startsWith("node:")) return "node";
  if (params.gatewayKind === "group") return "group";
  if (key.includes(":group:") || key.includes(":channel:")) {
    return "group";
  }
  return "other";
}

export function deriveChannel(params: {
  key: string;
  kind: SessionKind;
  channel?: string | null;
  lastChannel?: string | null;
}): string {
  if (params.kind === "cron" || params.kind === "hook" || params.kind === "node") return "internal";
  const channel = normalizeKey(params.channel ?? undefined);
  if (channel) return channel;
  const lastChannel = normalizeKey(params.lastChannel ?? undefined);
  if (lastChannel) return lastChannel;
  const parts = params.key.split(":").filter(Boolean);
  if (parts.length >= 3 && (parts[1] === "group" || parts[1] === "channel")) {
    return parts[0];
  }
  return "unknown";
}

export function stripToolMessages(messages: unknown[]): unknown[] {
  return messages.filter((msg) => {
    if (!msg || typeof msg !== "object") return true;
    const role = (msg as { role?: unknown }).role;
    return role !== "toolResult";
  });
}

/**
 * Sanitize text content to strip tool call markers and thinking tags.
 * This ensures user-facing text doesn't leak internal tool representations.
 */
export function sanitizeTextContent(text: string): string {
  return stripThinkingTagsFromText(
    stripDowngradedToolCallText(stripMinimaxToolCallXml(text)),
  ).trim();
}

export function extractAssistantText(message: unknown): string | undefined {
  if (!message || typeof message !== "object") return undefined;
  if ((message as { role?: unknown }).role !== "assistant") return undefined;
  const content = (message as { content?: unknown }).content;
  if (!Array.isArray(content)) return undefined;
  const chunks: string[] = [];
  for (const block of content) {
    if (!block || typeof block !== "object") continue;
    if ((block as { type?: unknown }).type !== "text") continue;
    const text = (block as { text?: unknown }).text;
    if (typeof text === "string") {
      const sanitized = sanitizeTextContent(text);
      if (sanitized) {
        chunks.push(sanitized);
      }
    }
  }
  const joined = chunks.join("\n").trim();
  return joined ? sanitizeUserFacingText(joined) : undefined;
}