import { prisma } from "@kokorone/db";

const API_PORT = process.env.PORT_API ?? "3001";
const CHARACTER_ID = "seed-character-genki";

async function post(path, body) {
  const res = await fetch(`http://localhost:${API_PORT}${path}`, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(body ?? {}),
  });
  if (!res.ok) {
    throw new Error(`POST ${path} 回傳 ${res.status}`);
  }
  return res.json();
}

async function get(path) {
  const res = await fetch(`http://localhost:${API_PORT}${path}`);
  if (!res.ok) {
    throw new Error(`GET ${path} 回傳 ${res.status}`);
  }
  return res.json();
}

async function countLongTermMemories() {
  const [episodic, semantic, procedural] = await Promise.all([
    prisma.episodicMemory.count(),
    prisma.semanticMemory.count(),
    prisma.proceduralRule.count(),
  ]);
  return episodic + semantic + procedural;
}

export default async function smokeC() {
  const sessionId = `smoke-c-${Date.now()}`;
  const highEmotionContent = `我剛剛收到夢寐以求的錄取通知，超級感動！[${sessionId}]`;

  const countBeforeAppend = await countLongTermMemories();

  // C-1 工作記憶溢位裁切：附加夠多低情緒內容觸發裁切，驗證高情緒段落被保留
  const filler = "今天天氣普通普通的沒什麼特別事情發生。";
  for (let i = 0; i < 5; i++) {
    await post(`/memory/${CHARACTER_ID}/sessions/${sessionId}/messages`, {
      role: "user",
      content: `${filler.repeat(6)}${i}`,
      emotionTag: "CALM",
      emotionIntensity: 0.05,
    });
  }
  await post(`/memory/${CHARACTER_ID}/sessions/${sessionId}/messages`, {
    role: "user",
    content: highEmotionContent,
    emotionTag: "JOY",
    emotionIntensity: 0.95,
  });

  const { context: afterOverflow } = await get(`/memory/${CHARACTER_ID}/sessions/${sessionId}/messages`);
  if (!afterOverflow.some((m) => m.content === highEmotionContent)) {
    throw new Error("工作記憶溢位裁切錯誤地清掉了高情緒段落");
  }
  if (afterOverflow.length >= 6) {
    throw new Error("工作記憶溢位裁切未生效，段落數未減少");
  }

  // C-2 對話期只寫工作記憶：附加訊息期間長期記憶表筆數不應變動
  const countAfterAppend = await countLongTermMemories();
  if (countAfterAppend !== countBeforeAppend) {
    throw new Error("對話期間長期記憶表筆數發生變化，違反「對話中不即時寫長期記憶」");
  }

  // C-4 睡眠固化：只有高情緒事件進 EpisodicMemory，瑣事不進
  await post(`/memory/${CHARACTER_ID}/sessions/${sessionId}/consolidate`);
  const { context: afterConsolidate } = await get(`/memory/${CHARACTER_ID}/sessions/${sessionId}/messages`);
  if (afterConsolidate.length !== 0) {
    throw new Error("固化後工作記憶未清空");
  }

  const countAfterConsolidate = await countLongTermMemories();
  if (countAfterConsolidate !== countBeforeAppend + 1) {
    throw new Error(
      `固化後長期記憶筆數變化不符預期（預期 +1，實際 ${countAfterConsolidate - countBeforeAppend}）`,
    );
  }

  // C-6 記憶檢索器：關鍵字命中、瑣事未污染結果
  const { results: retrieved } = await get(
    `/memory/${CHARACTER_ID}/retrieve?query=${encodeURIComponent("錄取通知")}`,
  );
  const consolidatedMemory = retrieved.find((m) => m.content === highEmotionContent);
  if (!consolidatedMemory) {
    throw new Error("高情緒事件未寫入 EpisodicMemory 或檢索不到");
  }
  if (retrieved.some((m) => m.content.startsWith(filler))) {
    throw new Error("瑣事錯誤地被寫入 EpisodicMemory");
  }

  // C-5 提取即改寫：檢索命中後提取次數遞增
  const { results: retrievedAgain } = await get(
    `/memory/${CHARACTER_ID}/retrieve?query=${encodeURIComponent("錄取通知")}`,
  );
  const secondHit = retrievedAgain.find((m) => m.id === consolidatedMemory.id);
  if (!secondHit || secondHit.retrievalCount <= consolidatedMemory.retrievalCount) {
    throw new Error("重複檢索未持續遞增提取次數");
  }

  // C-5 遺忘：模擬時間推進，高情緒記憶不應被衰減
  const twoDaysLater = new Date(Date.now() + 2 * 24 * 60 * 60 * 1000).toISOString();
  await post("/memory/forgetting-sweep", { now: twoDaysLater });
  const { results: afterSweep } = await get(
    `/memory/${CHARACTER_ID}/retrieve?query=${encodeURIComponent("錄取通知")}`,
  );
  const highEmotionAfterSweep = afterSweep.find((m) => m.id === consolidatedMemory.id);
  if (!highEmotionAfterSweep || highEmotionAfterSweep.weight < secondHit.weight) {
    throw new Error("遺忘程序錯誤地影響了高情緒記憶");
  }

  // 清理本次測試寫入的長期記憶，避免重複執行時累積髒資料
  await prisma.episodicMemory.delete({ where: { id: consolidatedMemory.id } });

  // C-3 排程抽象層：schedule(at) 排入的工作在時間到之前不觸發、時間到之後準時觸發
  const jobId = `smoke-c-schedule-${Date.now()}`;
  await post("/memory/test-scheduled-job", { id: jobId, delaySeconds: 2 });

  const { fired: firedTooEarly } = await get(`/memory/test-scheduled-job/${jobId}`);
  if (firedTooEarly) {
    throw new Error("schedule(at) 排入的工作在時間到之前就觸發了");
  }

  await new Promise((resolve) => setTimeout(resolve, 3000));

  const { fired: firedOnTime } = await get(`/memory/test-scheduled-job/${jobId}`);
  if (!firedOnTime) {
    throw new Error("schedule(at) 排入的工作逾時未觸發");
  }
}