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

const API_PORT = process.env.PORT_API ?? "3001";
const USER_ID = "smoke-r-user";
const CHAR_A = "smoke-r-char-a";
const CHAR_B = "smoke-r-char-b";

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 ${res.status}：${await res.text()}`);
  }
  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 ${res.status}：${await res.text()}`);
  }
  return res.json();
}

async function createCharacter(id, formalName) {
  await post("/personality/characters", {
    id,
    source: "ORIGINAL",
    buildStatus: "BUILT",
    formalName,
    basicInfo: `${formalName}，測試角色`,
    backgroundStory: "測試用背景",
    personalityArchetype: "元氣",
    likesDislikes: "測試",
    goalsObsessions: "測試",
    speechStyle: "第一人稱「我」",
    initialRelationship: { userId: USER_ID, intimacy: 50, trust: 50 },
  });
}

// P1 端到端驗證：建房與取回、房間持久化（供重啟後接續推進的依據）、大廳常駐房在場流轉、
// 離開後重進、1:1 併入 SOLO 房後關房仍觸發睡眠固化。
export default async function smokeR() {
  await prisma.room.deleteMany({ where: { userId: USER_ID } });
  await prisma.character.deleteMany({ where: { id: { in: [CHAR_A, CHAR_B] } } });
  await prisma.user.upsert({ where: { id: USER_ID }, update: {}, create: { id: USER_ID, name: "R 群組測試使用者" } });
  await createCharacter(CHAR_A, "小R甲");
  await createCharacter(CHAR_B, "小R乙");

  // T3／T12 驗收：建房與取回。
  const room = await post("/room", { userId: USER_ID, characterIds: [CHAR_A, CHAR_B], mode: "GROUP" });
  const fetched = await get(`/room/${room.id}`);
  if (fetched.id !== room.id || fetched.participants.length !== 2) {
    throw new Error("建房後應能立即取回相同房間與完整在場名單");
  }

  // T37 驗收：對話會更新 lastAdvancedAt——這是重啟後排程據以判斷「是否該立刻接續推進」的依據；
  // 資料直接落在 DB（非行程記憶體），故任何重新連線（含 api 重啟後的新行程）都能讀到同一筆值。
  // 「api 行程真的重啟後房間仍能取回」已於 T37 由人工實際重啟驗證覆蓋（見該項備註的 6 小時停機模擬）。
  await post(`/room/${room.id}/message`, { userId: USER_ID, userLabel: "測試", text: "哈囉大家" });
  const roomRow = await prisma.room.findUnique({ where: { id: room.id } });
  if (!roomRow?.lastAdvancedAt) {
    throw new Error("推進後 lastAdvancedAt 應被更新並持久化，供重啟恢復判斷使用");
  }

  // T24 驗收：大廳常駐房在場流轉——進房後大廳在場名單少一人。
  const lobbyBefore = await get(`/room/lobby?userId=${USER_ID}`);
  if (!lobbyBefore.roster.includes(CHAR_A)) {
    throw new Error("尚未進房前，角色應在大廳在場名單中");
  }
  const soloRoom = await post("/room/solo", { userId: USER_ID, characterId: CHAR_A });
  const lobbyAfterEnter = await get(`/room/lobby?userId=${USER_ID}`);
  if (lobbyAfterEnter.roster.includes(CHAR_A)) {
    throw new Error("進房後大廳在場名單應該少一人");
  }

  // T12 驗收：離開後重進，對話歷程完整且角色仍在場。
  await post(`/room/${soloRoom.id}/message`, { userId: USER_ID, text: "你好呀" });
  const reentered = await get(`/room/${soloRoom.id}`);
  if (reentered.turns.length === 0) {
    throw new Error("重新進入房間應能看到先前對話歷程");
  }
  if (!reentered.participants.includes(CHAR_A)) {
    throw new Error("重新進入房間時角色應仍在場");
  }

  // T38 驗收：1:1 併入 SOLO 房後，關房仍觸發睡眠固化（工作記憶清空）並自動回到大廳。
  const workingMemBefore = await get(`/memory/${CHAR_A}/sessions/${soloRoom.id}/messages`);
  if (workingMemBefore.context.length === 0) {
    throw new Error("關房前工作記憶應保留本輪對話內容");
  }
  await post(`/room/${soloRoom.id}/end`, {});
  const workingMemAfter = await get(`/memory/${CHAR_A}/sessions/${soloRoom.id}/messages`);
  if (workingMemAfter.context.length !== 0) {
    throw new Error("關房應觸發睡眠固化並清空工作記憶");
  }
  const lobbyAfterLeave = await get(`/room/lobby?userId=${USER_ID}`);
  if (!lobbyAfterLeave.roster.includes(CHAR_A)) {
    throw new Error("關房後角色應自動回到大廳");
  }

  // 清理本次測試建立的角色、房間與使用者。
  await prisma.room.deleteMany({ where: { userId: USER_ID } });
  await prisma.character.deleteMany({ where: { id: { in: [CHAR_A, CHAR_B] } } });
  await prisma.user.deleteMany({ where: { id: USER_ID } });
}