import { extension_settings, getContext } from "/scripts/extensions.js";
import { characters } from "/script.js";
import { world_names } from "/scripts/world-info.js";
import { extensionName } from "../utils/settings.js";
import { extractContentByTag, replaceContentByTag } from '../utils/tagProcessor.js';
import {
  getCombinedWorldbookContent,
  findLatestSummaryLore,
  DEDICATED_LOREBOOK_NAME,
  getChatIdentifier,
} from "./lore.js";


const UPDATE_CHECK_URL =
  "https://raw.githubusercontent.com/Wx-2025/ST-Amily2-Chat-Optimisation/refs/heads/main/amily2_update_info.json";


export async function checkForUpdates() {
    if (!UPDATE_CHECK_URL || UPDATE_CHECK_URL.includes('YourUsername')) {
        console.log('[Amily2号-外交部] 任务取消：陛下尚未配置情报来源URL。');
        return null;
    }


    try {
        console.log('[Amily2号-外交部] 已派遣使者前往云端获取最新情报...');
        const response = await fetch(UPDATE_CHECK_URL, {
            method: 'GET',
            cache: 'no-store',
            mode: 'cors'
        });



        if (!response.ok) {
            throw new Error(`远方服务器响应异常，状态: ${response.status}`);
        }

        const data = await response.json();
        console.log('[Amily2号-外交部] 情报已成功获取并解析。');
        return data;

    } catch (error) {
        console.error('[Amily2号-外交部] 紧急军情：外交任务失败！', error);
        return null;
    }
}


let isFetchingModels = false;

export async function fetchSupportedModels() {
  const apiUrl = $("#amily2_api_url").val().trim();
  const apiKey = $("#amily2_api_key").val().trim();

  if (!apiUrl) {
    toastr.error("请先配置API URL", "获取模型失败");
    return [];
  }
  if (isFetchingModels) {
    toastr.info("正在获取模型列表，请稍候...", "获取模型");
    return [];
  }

  isFetchingModels = true;
  $("#amily2_refresh_models")
    .prop("disabled", true)
    .html('<i class="fas fa-spinner fa-spin"></i> 加载中');

  try {
    let modelListUrl;
    if (apiUrl.includes("/v1/chat/completions")) {
      modelListUrl = apiUrl.replace("/v1/chat/completions", "/v1/models");
    } else if (apiUrl.endsWith("/v1")) {
      modelListUrl = `${apiUrl}/models`;
    } else if (apiUrl.endsWith("/")) {
      modelListUrl = `${apiUrl}v1/models`;
    } else {
      modelListUrl = `${apiUrl}/v1/models`;
    }

    console.log("[更新] 模型列表请求地址:", modelListUrl);

    const headers = {
      "Content-Type": "application/json",
      Accept: "application/json",
    };
    if (apiKey) headers["Authorization"] = `Bearer ${apiKey}`;

    if (modelListUrl.includes("love.qinyan.xyz")) {
      headers["X-Custom-Proxy"] = "Amily2-ChatPlugin";
      headers["Origin"] = window.location.origin;
    }

    const response = await fetch(modelListUrl, {
      method: "GET",
      headers: headers,
      mode: "cors",
      credentials: "omit",
    });
    if (!response.ok) {
      let errorBody = "";
      try {
        const errorResponse = await response.json();
        errorBody = errorResponse.error?.message
          ? ` - ${errorResponse.error.message}`
          : await response.text();
      } catch (e) {
        errorBody = "无法解析错误响应";
      }
      throw new Error(
        `API返回错误: ${response.status} ${response.statusText}${errorBody}`,
      );
    }

    const data = await response.json();
    let models = [];
    if (Array.isArray(data)) {
      models = data.map((m) => m.id || m);
    } else if (data.data && Array.isArray(data.data)) {
      models = data.data.map((m) => m.id);
    } else if (data.models && Array.isArray(data.models)) {
      models = data.models;
    } else {
      throw new Error("未知的模型列表格式");
    }

    const availableModels = models.filter(
      (m) =>
        !m.includes("embed") &&
        !m.includes("search") &&
        !m.includes("similarity") &&
        !m.includes("audio"),
    );
    availableModels.sort();

    console.log(
      `获取模型列表成功 (${availableModels.length}个):`,
      availableModels,
    );

    toastr.success(
      `成功获取 ${availableModels.length} 个可用模型`,
      "模型加载完成",
    );
    return availableModels;
  } catch (error) {
    console.error("[错误详情] 获取模型列表失败:", {
      message: error.message,
      stack: error.stack,
    });
    if (error.message.includes("Failed to fetch"))
      toastr.error("网络连接失败，请检查API地址和网络状态", "网络错误");
    else if (error.message.includes("401") || error.message.includes("403"))
      toastr.error("API密钥无效或权限不足", "认证错误");
    else if (error.message.includes("404"))
      toastr.error(
        "API端点不存在，请确保URL指向OpenAI兼容的/v1/models端点",
        "端点错误",
      );
    else toastr.error(`获取模型失败: ${error.message}`, "错误");
    return [];
  } finally {
    isFetchingModels = false;
    $("#amily2_refresh_models")
      .prop("disabled", false)
      .html('<i class="fas fa-sync-alt"></i> 刷新模型');
  }
}

export async function checkAndFixWithAPI(latestMessage, previousMessages) {
  if (window.AMILY2_SYSTEM_PARALYZED === true) {
    console.error("[Amily2-制裁] 系统完整性已受损，所有外交活动被无限期中止。");
    return null;
  }
  console.groupCollapsed(
    `[Amily2号-优化任务] ${new Date().toLocaleTimeString()}`,
  );
  console.time("优化任务总耗时");

  const settings = extension_settings[extensionName];
  if (!settings.apiUrl || !settings.apiUrl.trim()) {
    toastr.error("API URL 未配置。", "API错误");
    console.timeEnd("优化任务总耗时");
    console.groupEnd();
    return null;
  }

  try {
    const targetTag = settings.optimizationTargetTag || 'content';
    const originalFullMessage = latestMessage.mes;
    let textToOptimize = extractContentByTag(originalFullMessage, targetTag);
    const wasTagFound = textToOptimize !== null;
    if (!wasTagFound) { textToOptimize = originalFullMessage; }

    if (wasTagFound && (!textToOptimize || textToOptimize.trim() === '')) {
      console.log(`[空文驳回] 目标标签 <${targetTag}> 内容为空，优化任务已跳过。`);
      console.timeEnd("优化任务总耗时");
      console.groupEnd();
      return { optimizedContent: originalFullMessage, summary: null };
    }

    const lastUserMessage = previousMessages.length > 0 && previousMessages[previousMessages.length - 1].is_user ? previousMessages[previousMessages.length - 1] : null;
    const historyMessages = lastUserMessage ? previousMessages.slice(0, -1) : previousMessages;

    console.groupCollapsed("[Amily2号-优化任务]");
    console.log("【陛下最新圣旨】:", lastUserMessage ? lastUserMessage.mes : "(无)");
    console.log("【待优化原文】:", originalFullMessage);
    console.groupEnd();

    const history = historyMessages
      .map(m => (m.mes && m.mes.trim() ? `${m.is_user ? "陛下" : "姐姐Amily"}: ${m.mes.trim()}` : null))
      .filter(Boolean).join("\n");

    let worldbookContent = "";
    if (settings.worldbookEnabled) {
      const context = getContext();
      const character = context.characters[context.characterId];
      if (character?.data?.extensions?.world) {
        worldbookContent = await getCombinedWorldbookContent(character.data.extensions.world);
      }
    }


    console.groupCollapsed("[Amily2号-参考内容]");
    console.log("【世界书档案】:", worldbookContent || "(未启用或为空)");
    console.log("【上下文参考】:", history || "(无历史记录)");
    console.groupEnd();


    const messages = [];

    console.groupCollapsed("[Amily2号-提示设定]");
    if (settings.mainPrompt?.trim()) {
        console.log("【破限】:", settings.mainPrompt.trim());
        messages.push({ role: "system", content: settings.mainPrompt.trim() });
    }
    if (settings.systemPrompt?.trim()) {
        console.log("【预设】:", settings.systemPrompt.trim());
        messages.push({ role: "system", content: settings.systemPrompt.trim() });
    }
    if (settings.outputFormatPrompt?.trim()) {
        const formatPrompt = `[输出格式指令]:\n${settings.outputFormatPrompt.trim()}`;
        console.log("【格式】:", formatPrompt);
        messages.push({ role: "system", content: formatPrompt });
    }
    if (settings.summarizationEnabled && settings.summarizationPrompt?.trim()) {
        const summaryPrompt = `[总结附加指令]:\n${settings.summarizationPrompt.trim()}`;
        console.log("【总结】:", summaryPrompt);
        messages.push({ role: "system", content: summaryPrompt });
    }
    console.groupEnd();

    if (worldbookContent) { messages.push({ role: "user", content: `[世界书档案]:\n${worldbookContent}` }); }
    if (history) { messages.push({ role: "user", content: `[上下文参考]:\n${history}` }); }
    let currentInteractionContent = lastUserMessage ? `陛下: ${lastUserMessage.mes}\n姐姐Amily: ${textToOptimize}` : textToOptimize;
    messages.push({ role: "user", content: `[核心处理内容]:\n${currentInteractionContent}` });

    console.time("API请求耗时");
    let apiUrl = settings.apiUrl.trim();
    if (!apiUrl.endsWith("/chat/completions")) { apiUrl = new URL("/v1/chat/completions", apiUrl).href; }
    const headers = { "Content-Type": "application/json" };
    if (settings.apiKey) headers["Authorization"] = `Bearer ${settings.apiKey}`;
    const response = await fetch(apiUrl, { method: "POST", headers: headers, body: JSON.stringify({ model: settings.model, messages, max_tokens: settings.maxTokens, temperature: settings.temperature, stream: false }) });
    console.timeEnd("API请求耗时");

    if (!response.ok) { throw new Error(`API请求失败: ${response.status} ${response.statusText} - ${await response.text()}`); }
    const data = await response.json();
    const rawContent = data.choices?.[0]?.message?.content;
    if (!rawContent) { return null; }

    console.groupCollapsed("[Amily2号-最终回复]");
    console.log(rawContent);
    console.groupEnd();

    const separator = "###AMILY2-SUMMARY###";
    let optimizedTextFromModelB = rawContent;
    let summary = null;
    if (rawContent.includes(separator)) {
      const parts = rawContent.split(separator);
      optimizedTextFromModelB = parts[0].trim();
      summary = parts[1] ? parts[1].trim() : null;
    }

    let finalMessage;

    const purifiedTextFromB = extractContentByTag(optimizedTextFromModelB, targetTag);

    if (purifiedTextFromB !== null && purifiedTextFromB.trim() !== '') {
        console.log(`[圣裁：采纳] 已从模型B的回复中提取<${targetTag}>内容，并将其置换入模型A的原始结构中。`);
        finalMessage = replaceContentByTag(originalFullMessage, targetTag, purifiedTextFromB);
    } else {
        console.log(`[圣裁：驳回] 模型B的回复中未找到或内容为空的<${targetTag}>标签，其优化内容已被废黜，采纳模型A的原文。`);
        finalMessage = originalFullMessage;
    }

    if (summary) { console.log("[Amily2号] 生成总结: ", summary); }
    console.timeEnd("优化任务总耗时");
    console.groupEnd();
    return { optimizedContent: finalMessage, summary: summary };

  } catch (error) {
    console.error(`[Amily2-情报解析官] 发生严重错误: ${error.message}`);
    toastr.error(`API调用失败: ${error.message}`, "Amily2号");
    console.timeEnd("优化任务总耗时");
    console.groupEnd();
    return null;
  }
}