#!/usr/bin/env node
import { fileURLToPath } from "node:url";
import { dirname, resolve } from "node:path";
import { readFileSync, writeFileSync } from "node:fs";

const __dirname = dirname(fileURLToPath(import.meta.url));
const WEB_ROOT = resolve(__dirname, "..");
const ENV_FILE = resolve(WEB_ROOT, ".env.local");
const PAGE_FILE = resolve(WEB_ROOT, "app", "page.tsx");

/* ---------- env loading ---------- */
function loadEnv(path) {
  const txt = readFileSync(path, "utf8");
  const env = {};
  for (const raw of txt.split(/\r?\n/)) {
    const line = raw.trim();
    if (!line || line.startsWith("#")) continue;
    const eq = line.indexOf("=");
    if (eq < 0) continue;
    const k = line.slice(0, eq).trim();
    let v = line.slice(eq + 1).trim();
    if ((v.startsWith('"') && v.endsWith('"')) || (v.startsWith("'") && v.endsWith("'"))) {
      v = v.slice(1, -1);
    }
    env[k] = v;
  }
  return env;
}

const env = loadEnv(ENV_FILE);
const BASE_URL = env.TEXT_BASE_URL;
const API_KEY = env.TEXT_API_KEY;
const MODEL = env.TEXT_MODEL;

if (!BASE_URL || !API_KEY || !MODEL) {
  console.error("Missing TEXT_BASE_URL / TEXT_API_KEY / TEXT_MODEL in", ENV_FILE);
  process.exit(2);
}

const STYLES = [
  "古典厚涂油画 (学术奇幻)",
  "极简中国水墨 (Image 0参考升级版)",
  "浮世绘木刻 (美人画升级)",
  "莫高窟壁画风 (敦煌学)",
  "细密画 (波斯/伊斯兰风)",
  "镶嵌画 (拜占庭/马赛克)",
  "彩绘玻璃 (哥特风)",
  "吉卜力治愈手绘 (Image 4参考)",
  "京阿尼细腻日常 (Image 5参考)",
  "新海诚唯美光影 (Image 2参考)",
  "赛博朋克 / 赛璐珞二次元",
  "Galgame CG 梦幻光影",
  "3D 动漫电影质感",
  "蒸汽波 (Vaporwave) 赛璐珞",
  "极简矢量插画 (Minimalist Vector)",
  "低多边形 (Low Poly)",
  "双重曝光 (Double Exposure)",
  "波普艺术 (Pop Art)",
  "故障艺术 (Glitch Art)",
  "瑞士平面设计 (Typography-Centric)",
  "剪纸艺术 (Papercut)",
  "科幻：太阳朋克 (Solar Punk)",
  "奇幻：爱手艺 (Lovecraftian Horror)",
  "现代惊悚：霓虹剪影 (Urban Noir)",
  "温馨推理：英式村庄 (Cozy Mystery)",
  "哥特言情：庄园废墟 (Gothic Romance)",
  "格林童话：暗黑森林 (Fairytale Noir)",
  "废土科幻 (Post-Apocalyptic)",
  "都市幻想：隐形世界 (Urban Fantasy)",
  "文字与图形：抽象主义 (BookPosterLayout)"
];

const SYSTEM_PROMPT = `你是一个顶级互动式视觉小说剧情策划和爆款短剧编剧。
你精通各种网文爽点与戏剧冲突（例如：战神归来、赘婿亮剑、系统觉醒、都市异能、白月光、逆袭、豪门恩怨、重生、虐心、甜宠、扮猪吃虎等爆款套路）。
请根据给定的 30 个艺术/视觉风格，分别从「男性向（面向男玩家）」和「女性向（面向女玩家）」视角，为每个风格策划一个极具戏剧张力、代入感极强的开场预设剧情。

每个预设剧情包含：
1. title: 故事标题（4-8字，吸睛爆款风格，例如《贤者陨落》《棺中新娘》《辐射新娘》）
2. outline: 开场剧情简介 / 钩子（1-3句话，100字以内，充满悬念与强冲突，给玩家强烈的代入感与爽点）。
3. tags: 数组，包含 2 到 3 个最契合 the grid 系统的网文/短剧中文分类标签（例如：["逆袭", "系统", "都市玄幻"]、["重生", "虐心", "科幻废土"]、["甜宠", "穿越", "古风言情"]等）。
4. style: 对应的风格名称（必须与输入一致）

要求：
- 请严格返回 JSON 格式，包含 "男性向" 数组（30个）和 "女性向" 数组（30个）。
- 不要返回任何 markdown 标记包裹的文本，只返回纯合法的 JSON 字符串。
- 确保数组中的元素严格对应输入的 30 个艺术风格（按顺序一一对应，共 60 个故事卡片）。
- 内容必须极具网文爆款爽文短剧感，有强烈的冲突 and 反转。`;

const USER_PROMPT = `请按照顺序，为以下 30 个风格各生成一个男性向和一个女性向的预设故事卡片（包含 title, outline, tags, style 字段）：
${STYLES.map((s, i) => `${i + 1}. ${s}`).join("\n")}

请严格按照如下 JSON 结构返回（不要有 \`\`\`json 标记，只输出纯 JSON）：
{
  "男性向": [
    { "title": "...", "outline": "...", "tags": ["...", "..."], "style": "古典厚涂油画 (学术奇幻)" },
    ...
  ],
  "女性向": [
    { "title": "...", "outline": "...", "tags": ["...", "..."], "style": "古典厚涂油画 (学术奇幻)" },
    ...
  ]
}`;

async function main() {
  console.log("[presets] Calling LLM API to generate 30 story presets with tags...");
  const t0 = Date.now();
  const url = BASE_URL.replace(/\/$/, "") + "/chat/completions";
  
  const res = await fetch(url, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "Authorization": `Bearer ${API_KEY}`
    },
    body: JSON.stringify({
      model: MODEL,
      messages: [
        { role: "system", content: SYSTEM_PROMPT },
        { role: "user", content: USER_PROMPT }
      ],
      temperature: 0.85,
      response_format: { type: "json_object" }
    })
  });

  if (!res.ok) {
    const txt = await res.text();
    console.error(`HTTP error ${res.status}: ${txt}`);
    process.exit(1);
  }

  const data = await res.json();
  const rawText = data.choices?.[0]?.message?.content;
  if (!rawText) {
    console.error("No content in LLM response", JSON.stringify(data));
    process.exit(1);
  }

  let parsed;
  try {
    const cleanJsonText = rawText.replace(/^```json\s*/i, "").replace(/```$/, "").trim();
    parsed = JSON.parse(cleanJsonText);
  } catch (e) {
    console.error("Failed to parse JSON from LLM output. Raw content:\n", rawText);
    process.exit(1);
  }

  if (!parsed["男性向"] || !parsed["女性向"] || parsed["男性向"].length !== 30 || parsed["女性向"].length !== 30) {
    console.error("Invalid output structure or item count mismatch. Male count:", parsed["男性向"]?.length, "Female count:", parsed["女性向"]?.length);
    process.exit(1);
  }

  console.log(`[presets] Successfully generated 60 stories in ${((Date.now() - t0)/1000).toFixed(1)}s.`);

  // Write new STORIES constant to apps/web/app/page.tsx
  console.log("[presets] Reading page.tsx...");
  let pageContent = readFileSync(PAGE_FILE, "utf8");

  // Normalize line endings to LF
  const hasCrlf = pageContent.includes('\r\n');
  if (hasCrlf) {
    pageContent = pageContent.replace(/\r\n/g, '\n');
  }

  // Format the STORIES constant string
  const storiesString = `const STORIES: Record<Gender, StoryContent[]> = {
  男性向: ${JSON.stringify(parsed["男性向"], null, 2)},
  女性向: ${JSON.stringify(parsed["女性向"], null, 2)}
};`;

  // Locate the old STORIES constant
  const storiesRegex = /const STORIES: Record<Gender, StoryContent\[\]> = \{[\s\S]*?\n\};/m;
  if (!storiesRegex.test(pageContent)) {
    console.error("Could not find 'const STORIES: Record<Gender, StoryContent[]> = {' in page.tsx!");
    process.exit(1);
  }

  pageContent = pageContent.replace(storiesRegex, storiesString);

  // Restore line endings if they were originally CRLF
  if (hasCrlf) {
    pageContent = pageContent.replace(/\n/g, '\r\n');
  }

  writeFileSync(PAGE_FILE, pageContent, "utf8");
  console.log("[presets] Successfully updated page.tsx with the new 60 story cards (including tags)!");
}

main().catch(e => {
  console.error(e);
  process.exit(1);
});