/**
 * AtoCore OpenClaw plugin — capture + pull.
 *
 * Two responsibilities:
 *
 * 1. CAPTURE (existing): On before_agent_start, buffer the user prompt.
 *    On llm_output, POST prompt+response to AtoCore /interactions.
 *    This is the "write" side — OpenClaw turns feed AtoCore's memory.
 *
 * 2. PULL (Phase 1 master brain): On before_prompt_build, call AtoCore
 *    /context/build and inject the returned context via prependContext.
 *    Every OpenClaw response is automatically grounded in what AtoCore
 *    knows (project state, memories, relevant chunks).
 *
 * Fail-open throughout: AtoCore unreachable = no injection, no capture,
 * never blocks the agent.
 */

import { definePluginEntry } from "openclaw/plugin-sdk/core";

const BASE_URL = process.env.ATOCORE_BASE_URL || "http://dalidou:8100";
const MIN_LEN = 15;
const MAX_RESP = 50000;
const CONTEXT_TIMEOUT_MS = 6000;
const CAPTURE_TIMEOUT_MS = 10000;

function trim(v) { return typeof v === "string" ? v.trim() : ""; }
function trunc(t, m) { return !t || t.length <= m ? t : t.slice(0, m) + "\n\n[truncated]"; }

function detectProject(prompt) {
  const lower = (prompt || "").toLowerCase();
  const hints = [
    ["p04", "p04-gigabit"],
    ["gigabit", "p04-gigabit"],
    ["p05", "p05-interferometer"],
    ["interferometer", "p05-interferometer"],
    ["p06", "p06-polisher"],
    ["polisher", "p06-polisher"],
    ["fullum", "p06-polisher"],
    ["abb", "abb-space"],
    ["atomizer", "atomizer-v2"],
    ["atocore", "atocore"],
  ];
  for (const [token, proj] of hints) {
    if (lower.includes(token)) return proj;
  }
  return "";
}

export default definePluginEntry({
  register(api) {
    const log = api.logger;
    let lastPrompt = null;

    // --- PULL: inject AtoCore context into every prompt ---
    api.on("before_prompt_build", async (event, ctx) => {
      if (process.env.ATOCORE_PULL_DISABLED === "1") return;
      const prompt = trim(event?.prompt || "");
      if (prompt.length < MIN_LEN) return;

      const project = detectProject(prompt);

      try {
        const res = await fetch(BASE_URL.replace(/\/$/, "") + "/context/build", {
          method: "POST",
          headers: { "Content-Type": "application/json" },
          body: JSON.stringify({ prompt, project }),
          signal: AbortSignal.timeout(CONTEXT_TIMEOUT_MS),
        });
        if (!res.ok) {
          log.info("atocore-pull:http_error", { status: res.status });
          return;
        }
        const data = await res.json();
        const contextPack = data.formatted_context || "";
        if (!contextPack.trim()) return;

        log.info("atocore-pull:injected", {
          project: project || "(none)",
          chars: contextPack.length,
        });

        return {
          prependContext:
            "--- AtoCore Context (auto-injected) ---\n" +
            contextPack +
            "\n--- End AtoCore Context ---\n",
        };
      } catch (err) {
        log.info("atocore-pull:error", { error: String(err).slice(0, 200) });
      }
    });

    // --- CAPTURE: buffer user prompts on agent start ---
    api.on("before_agent_start", async (event, ctx) => {
      const prompt = trim(event?.prompt || event?.cleanedBody || "");
      if (prompt.length < MIN_LEN || prompt.startsWith("<")) {
        lastPrompt = null;
        return;
      }
      lastPrompt = { text: prompt, sessionKey: ctx?.sessionKey || "", ts: Date.now() };
      log.info("atocore-capture:prompt_buffered", { len: prompt.length });
    });

    // --- CAPTURE: send completed turns to AtoCore ---
    api.on("llm_output", async (event, ctx) => {
      if (!lastPrompt) return;
      const texts = Array.isArray(event?.assistantTexts) ? event.assistantTexts : [];
      const response = trunc(trim(texts.join("\n\n")), MAX_RESP);
      if (!response) return;

      const prompt = lastPrompt.text;
      const sessionKey = lastPrompt.sessionKey || ctx?.sessionKey || "";
      const project = detectProject(prompt);
      lastPrompt = null;

      log.info("atocore-capture:posting", {
        promptLen: prompt.length,
        responseLen: response.length,
        project: project || "(none)",
      });

      fetch(BASE_URL.replace(/\/$/, "") + "/interactions", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          prompt,
          response,
          client: "openclaw",
          session_id: sessionKey,
          project,
          reinforce: true,
        }),
        signal: AbortSignal.timeout(CAPTURE_TIMEOUT_MS),
      }).then(res => {
        log.info("atocore-capture:posted", { status: res.status });
      }).catch(err => {
        log.warn("atocore-capture:post_error", { error: String(err).slice(0, 200) });
      });
    });

    api.on("session_end", async () => {
      lastPrompt = null;
    });
  }
});