import { eq } from "drizzle-orm";

import { getDatabase } from "@/modules/core/server/db";
import {
  admissions,
  beds,
  buildings,
  campuses,
  chronicConditions,
  elders,
  floors,
  healthAnomalyReviews,
  healthProfiles,
  rooms,
  systemIncidents,
  vitalRecords,
} from "@/modules/core/server/schema";

type SeedRoom = {
  buildingName: string;
  campusName: string;
  code: string;
  floorLevel: number;
  floorName: string;
  name: string;
  capacity: number;
};

type SeedBed = {
  code: string;
  notes: string;
  roomCode: string;
  status: "available" | "occupied" | "maintenance" | "disabled";
};

type SeedElder = {
  age: number;
  careLevel: "self-care" | "semi-assisted" | "assisted" | "intensive";
  gender: "male" | "female" | "other";
  medicalNotes: string;
  name: string;
  phone: string;
  primaryContact: string;
  status: "active" | "pending" | "discharged";
};

type SeedAdmission = {
  bedCode: string;
  elderName: string;
  notes: string;
  status: "active" | "transferred" | "discharged";
};

type SeedHealthProfile = {
  allergyNotes: string;
  careRestrictions: string;
  elderName: string;
  emergencyNotes: string;
  medicalHistory: string;
  medicationNotes: string;
};

type SeedVitalRecord = {
  bloodGlucoseTenths?: number;
  diastolicBp?: number;
  elderName: string;
  heartRate?: number;
  notes: string;
  recordedHoursAgo: number;
  source: "manual" | "device" | "import";
  spo2?: number;
  systolicBp?: number;
  temperatureTenths?: number;
  weightTenths?: number;
};

type SeedChronicCondition = {
  elderName: string;
  followUpNotes: string;
  name: string;
  status: "active" | "controlled" | "resolved";
  treatmentNotes: string;
};

type SeedHealthReview = {
  description: string;
  elderName: string;
  resolutionNotes: string;
  severity: "info" | "warning" | "critical";
  status: "pending" | "reviewed" | "resolved";
  title: string;
  vitalIndex: number;
};

const DEFAULT_ROOMS: SeedRoom[] = [
  { campusName: "主院区", buildingName: "护理楼", floorName: "一层", floorLevel: 1, code: "A101", name: "阳光房", capacity: 2 },
  { campusName: "主院区", buildingName: "护理楼", floorName: "一层", floorLevel: 1, code: "A102", name: "康养房", capacity: 2 },
  { campusName: "主院区", buildingName: "护理楼", floorName: "二层", floorLevel: 2, code: "A201", name: "记忆照护房", capacity: 2 },
  { campusName: "主院区", buildingName: "护理楼", floorName: "二层", floorLevel: 2, code: "A202", name: "重点照护房", capacity: 2 },
  { campusName: "主院区", buildingName: "康复楼", floorName: "一层", floorLevel: 1, code: "R101", name: "康复观察房", capacity: 2 },
  { campusName: "主院区", buildingName: "康复楼", floorName: "一层", floorLevel: 1, code: "R102", name: "短住评估房", capacity: 2 },
  { campusName: "北苑院区", buildingName: "颐养楼", floorName: "一层", floorLevel: 1, code: "B101", name: "自理房", capacity: 2 },
  { campusName: "北苑院区", buildingName: "颐养楼", floorName: "二层", floorLevel: 2, code: "B201", name: "亲情套房", capacity: 2 },
];

const DEFAULT_BEDS: SeedBed[] = [
  { code: "A101-1", roomCode: "A101", status: "occupied", notes: "靠窗，已完成入住评估" },
  { code: "A101-2", roomCode: "A101", status: "available", notes: "可安排半护理老人入住" },
  { code: "A102-1", roomCode: "A102", status: "occupied", notes: "夜间巡护重点关注" },
  { code: "A102-2", roomCode: "A102", status: "maintenance", notes: "床头呼叫器检修中" },
  { code: "A201-1", roomCode: "A201", status: "occupied", notes: "记忆照护专区" },
  { code: "A201-2", roomCode: "A201", status: "available", notes: "靠近护理站" },
  { code: "A202-1", roomCode: "A202", status: "occupied", notes: "压疮风险重点巡查" },
  { code: "A202-2", roomCode: "A202", status: "disabled", notes: "待更换护栏" },
  { code: "R101-1", roomCode: "R101", status: "occupied", notes: "康复训练后休息床位" },
  { code: "R101-2", roomCode: "R101", status: "available", notes: "临时观察床位" },
  { code: "R102-1", roomCode: "R102", status: "available", notes: "短住评估床位" },
  { code: "R102-2", roomCode: "R102", status: "available", notes: "短住评估床位" },
  { code: "B101-1", roomCode: "B101", status: "occupied", notes: "自理老人长期床位" },
  { code: "B101-2", roomCode: "B101", status: "available", notes: "低照护需求床位" },
  { code: "B201-1", roomCode: "B201", status: "occupied", notes: "亲属探访便利" },
  { code: "B201-2", roomCode: "B201", status: "available", notes: "亲情套房备用床" },
];

const DEFAULT_ELDERS: SeedElder[] = [
  {
    name: "王桂兰",
    gender: "female",
    age: 82,
    careLevel: "intensive",
    status: "active",
    primaryContact: "张敏",
    phone: "13800000001",
    medicalNotes: "高血压，需晨晚血压记录。",
  },
  {
    name: "李建国",
    gender: "male",
    age: 76,
    careLevel: "semi-assisted",
    status: "active",
    primaryContact: "李明",
    phone: "13800000002",
    medicalNotes: "餐后散步陪同，关注睡眠情况。",
  },
  {
    name: "周玉珍",
    gender: "female",
    age: 88,
    careLevel: "assisted",
    status: "active",
    primaryContact: "周强",
    phone: "13800000003",
    medicalNotes: "糖尿病饮食，餐前血糖提醒。",
  },
  {
    name: "赵国华",
    gender: "male",
    age: 91,
    careLevel: "intensive",
    status: "active",
    primaryContact: "赵琳",
    phone: "13800000004",
    medicalNotes: "夜间翻身，两小时巡房。",
  },
  {
    name: "孙秀梅",
    gender: "female",
    age: 73,
    careLevel: "semi-assisted",
    status: "active",
    primaryContact: "孙磊",
    phone: "13800000005",
    medicalNotes: "膝关节康复训练，每日下午一次。",
  },
  {
    name: "刘长青",
    gender: "male",
    age: 68,
    careLevel: "self-care",
    status: "active",
    primaryContact: "刘洋",
    phone: "13800000006",
    medicalNotes: "自理，需定期复查用药。",
  },
  {
    name: "陈秀英",
    gender: "female",
    age: 69,
    careLevel: "self-care",
    status: "pending",
    primaryContact: "陈佳",
    phone: "13800000007",
    medicalNotes: "待完成入住评估。",
  },
  {
    name: "何德明",
    gender: "male",
    age: 84,
    careLevel: "assisted",
    status: "pending",
    primaryContact: "何静",
    phone: "13800000008",
    medicalNotes: "家属已提交体检资料，等待床位确认。",
  },
  {
    name: "吴佩兰",
    gender: "female",
    age: 79,
    careLevel: "semi-assisted",
    status: "discharged",
    primaryContact: "吴昊",
    phone: "13800000009",
    medicalNotes: "已退住，保留历史档案。",
  },
  {
    name: "郑文远",
    gender: "male",
    age: 72,
    careLevel: "self-care",
    status: "discharged",
    primaryContact: "郑洁",
    phone: "13800000010",
    medicalNotes: "短住康复结束后退住。",
  },
];

const DEFAULT_ADMISSIONS: SeedAdmission[] = [
  { elderName: "王桂兰", bedCode: "A101-1", status: "active", notes: "默认工作区入住记录" },
  { elderName: "李建国", bedCode: "A102-1", status: "active", notes: "默认工作区入住记录" },
  { elderName: "周玉珍", bedCode: "A201-1", status: "active", notes: "记忆照护专区入住" },
  { elderName: "赵国华", bedCode: "A202-1", status: "active", notes: "重点照护入住" },
  { elderName: "孙秀梅", bedCode: "R101-1", status: "active", notes: "康复观察入住" },
  { elderName: "刘长青", bedCode: "B101-1", status: "active", notes: "自理区入住" },
  { elderName: "吴佩兰", bedCode: "B201-1", status: "discharged", notes: "历史退住记录" },
];

const DEFAULT_HEALTH_PROFILES: SeedHealthProfile[] = [
  {
    elderName: "王桂兰",
    allergyNotes: "青霉素过敏",
    medicalHistory: "高血压十余年，偶发胸闷。",
    medicationNotes: "晨服降压药，晚间复核血压。",
    careRestrictions: "低盐饮食，避免剧烈活动。",
    emergencyNotes: "胸闷或血压持续升高时立即联系医生。",
  },
  {
    elderName: "周玉珍",
    allergyNotes: "无明确药物过敏史",
    medicalHistory: "2 型糖尿病，轻度认知障碍。",
    medicationNotes: "餐前血糖监测，按医嘱用药。",
    careRestrictions: "控糖饮食，夜间加强巡护。",
    emergencyNotes: "低血糖症状时立即补糖并记录。",
  },
  {
    elderName: "赵国华",
    allergyNotes: "海鲜过敏",
    medicalHistory: "脑梗后遗症，长期卧床风险。",
    medicationNotes: "抗凝药按时服用。",
    careRestrictions: "两小时翻身，防跌倒，防压疮。",
    emergencyNotes: "意识异常或血氧下降时立即启动应急流程。",
  },
  {
    elderName: "刘长青",
    allergyNotes: "",
    medicalHistory: "冠心病随访。",
    medicationNotes: "自主管理用药，护理员每日提醒。",
    careRestrictions: "避免爬楼和长时间站立。",
    emergencyNotes: "胸痛需立即报告。",
  },
];

const DEFAULT_VITAL_RECORDS: SeedVitalRecord[] = [
  {
    elderName: "王桂兰",
    recordedHoursAgo: 2,
    source: "manual",
    systolicBp: 158,
    diastolicBp: 96,
    heartRate: 88,
    temperatureTenths: 367,
    spo2: 96,
    bloodGlucoseTenths: 62,
    weightTenths: 612,
    notes: "血压偏高，已安排复测。",
  },
  {
    elderName: "李建国",
    recordedHoursAgo: 5,
    source: "device",
    systolicBp: 128,
    diastolicBp: 78,
    heartRate: 76,
    temperatureTenths: 365,
    spo2: 98,
    notes: "体征平稳。",
  },
  {
    elderName: "周玉珍",
    recordedHoursAgo: 7,
    source: "manual",
    systolicBp: 134,
    diastolicBp: 82,
    heartRate: 80,
    temperatureTenths: 366,
    spo2: 97,
    bloodGlucoseTenths: 118,
    notes: "餐后血糖偏高，已记录饮食。",
  },
  {
    elderName: "赵国华",
    recordedHoursAgo: 12,
    source: "manual",
    systolicBp: 146,
    diastolicBp: 88,
    heartRate: 92,
    temperatureTenths: 381,
    spo2: 91,
    notes: "体温和血氧异常，需复核。",
  },
];

const DEFAULT_CHRONIC_CONDITIONS: SeedChronicCondition[] = [
  {
    elderName: "王桂兰",
    name: "高血压",
    status: "active",
    treatmentNotes: "规律服药，晨晚血压监测。",
    followUpNotes: "每周汇总血压趋势。",
  },
  {
    elderName: "周玉珍",
    name: "糖尿病",
    status: "active",
    treatmentNotes: "控糖饮食，餐前餐后血糖记录。",
    followUpNotes: "异常血糖进入复核队列。",
  },
  {
    elderName: "刘长青",
    name: "冠心病",
    status: "controlled",
    treatmentNotes: "按医嘱服药，避免劳累。",
    followUpNotes: "月度复诊提醒。",
  },
];

const DEFAULT_HEALTH_REVIEWS: SeedHealthReview[] = [
  {
    elderName: "王桂兰",
    vitalIndex: 0,
    severity: "warning",
    status: "pending",
    title: "血压异常",
    description: "收缩压和舒张压偏高，需要复测并确认用药。",
    resolutionNotes: "",
  },
  {
    elderName: "赵国华",
    vitalIndex: 3,
    severity: "critical",
    status: "pending",
    title: "血氧和体温异常",
    description: "血氧低于阈值且体温偏高，需要立即复核。",
    resolutionNotes: "",
  },
  {
    elderName: "周玉珍",
    vitalIndex: 2,
    severity: "info",
    status: "reviewed",
    title: "餐后血糖偏高",
    description: "餐后血糖高于日常水平。",
    resolutionNotes: "已调整晚餐主食并安排次日复测。",
  },
];

function hasRows(rows: unknown[]): boolean {
  return rows.length > 0;
}

export async function seedDefaultWorkspaceData(organizationId: string): Promise<void> {
  const database = getDatabase();
  const [existingRooms, existingBeds, existingElders, existingAdmissions] = await Promise.all([
    database.select({ id: rooms.id }).from(rooms).where(eq(rooms.organizationId, organizationId)).limit(1),
    database.select({ id: beds.id }).from(beds).where(eq(beds.organizationId, organizationId)).limit(1),
    database.select({ id: elders.id }).from(elders).where(eq(elders.organizationId, organizationId)).limit(1),
    database.select({ id: admissions.id }).from(admissions).where(eq(admissions.organizationId, organizationId)).limit(1),
  ]);

  if ([existingRooms, existingBeds, existingElders, existingAdmissions].some(hasRows)) {
    return;
  }

  await database.transaction(async (transaction) => {
    const uniqueCampusNames = Array.from(new Set(DEFAULT_ROOMS.map((room) => room.campusName)));
    const campusRows = await transaction
      .insert(campuses)
      .values(
        uniqueCampusNames.map((name) => ({
          organizationId,
          name,
          address: `${name}养老服务院区`,
        })),
      )
      .returning();
    if (campusRows.length !== uniqueCampusNames.length) {
      throw new Error("默认院区初始化失败");
    }
    const campusIdByName = new Map(campusRows.map((campus) => [campus.name, campus.id]));

    const uniqueBuildings = Array.from(
      new Map(DEFAULT_ROOMS.map((room) => [`${room.campusName}/${room.buildingName}`, room])).values(),
    );
    const buildingRows = await transaction
      .insert(buildings)
      .values(
        uniqueBuildings.map((building) => {
          const campusId = campusIdByName.get(building.campusName);
          if (!campusId) {
            throw new Error("默认楼栋初始化失败");
          }

          return {
            organizationId,
            campusId,
            name: building.buildingName,
          };
        }),
      )
      .returning();
    if (buildingRows.length !== uniqueBuildings.length) {
      throw new Error("默认楼栋初始化失败");
    }
    const buildingIdByKey = new Map(
      buildingRows.map((building, index) => {
        const source = uniqueBuildings[index];
        if (!source) {
          throw new Error("默认楼栋初始化失败");
        }

        return [`${source.campusName}/${source.buildingName}`, building.id];
      }),
    );

    const uniqueFloors = Array.from(
      new Map(
        DEFAULT_ROOMS.map((room) => [
          `${room.campusName}/${room.buildingName}/${room.floorLevel}`,
          room,
        ]),
      ).values(),
    );
    const floorRows = await transaction
      .insert(floors)
      .values(
        uniqueFloors.map((floor) => {
          const buildingId = buildingIdByKey.get(`${floor.campusName}/${floor.buildingName}`);
          if (!buildingId) {
            throw new Error("默认楼层初始化失败");
          }

          return {
            organizationId,
            buildingId,
            name: floor.floorName,
            level: floor.floorLevel,
          };
        }),
      )
      .returning();
    if (floorRows.length !== uniqueFloors.length) {
      throw new Error("默认楼层初始化失败");
    }
    const floorIdByKey = new Map(
      floorRows.map((floor, index) => {
        const source = uniqueFloors[index];
        if (!source) {
          throw new Error("默认楼层初始化失败");
        }

        return [`${source.campusName}/${source.buildingName}/${source.floorLevel}`, floor.id];
      }),
    );

    const roomRows = await transaction
      .insert(rooms)
      .values(
        DEFAULT_ROOMS.map((room) => {
          const floorId = floorIdByKey.get(`${room.campusName}/${room.buildingName}/${room.floorLevel}`);
          if (!floorId) {
            throw new Error("默认房间初始化失败");
          }

          return {
            organizationId,
            floorId,
            name: room.name,
            code: room.code,
            capacity: room.capacity,
          };
        }),
      )
      .returning();
    if (roomRows.length !== DEFAULT_ROOMS.length) {
      throw new Error("默认房间初始化失败");
    }

    const roomIdByCode = new Map(roomRows.map((room) => [room.code, room.id]));
    const bedRows = await transaction
      .insert(beds)
      .values(
        DEFAULT_BEDS.map((bed) => {
          const roomId = roomIdByCode.get(bed.roomCode);
          if (!roomId) {
            throw new Error("默认床位初始化失败");
          }

          return {
            organizationId,
            roomId,
            code: bed.code,
            status: bed.status,
            notes: bed.notes,
          };
        }),
      )
      .returning();
    if (bedRows.length !== DEFAULT_BEDS.length) {
      throw new Error("默认床位初始化失败");
    }

    const elderRows = await transaction
      .insert(elders)
      .values(DEFAULT_ELDERS.map((elder) => ({ ...elder, organizationId })))
      .returning();
    if (elderRows.length !== DEFAULT_ELDERS.length) {
      throw new Error("默认老人档案初始化失败");
    }

    const elderIdByName = new Map(elderRows.map((elder) => [elder.name, elder.id]));
    const bedIdByCode = new Map(bedRows.map((bed) => [bed.code, bed.id]));
    await transaction.insert(admissions).values(
      DEFAULT_ADMISSIONS.map((admission) => {
        const elderId = elderIdByName.get(admission.elderName);
        const bedId = bedIdByCode.get(admission.bedCode);
        if (!elderId || !bedId) {
          throw new Error("默认入住初始化失败");
        }

        return {
          organizationId,
          elderId,
          bedId,
          status: admission.status,
          dischargedAt: admission.status === "discharged" ? new Date() : undefined,
          notes: admission.notes,
        };
      }),
    );

    await transaction.insert(healthProfiles).values(
      DEFAULT_HEALTH_PROFILES.map((profile) => {
        const elderId = elderIdByName.get(profile.elderName);
        if (!elderId) {
          throw new Error("默认健康档案初始化失败");
        }

        return {
          organizationId,
          elderId,
          allergyNotes: profile.allergyNotes,
          medicalHistory: profile.medicalHistory,
          medicationNotes: profile.medicationNotes,
          careRestrictions: profile.careRestrictions,
          emergencyNotes: profile.emergencyNotes,
        };
      }),
    );

    const now = new Date();
    const vitalRows = await transaction
      .insert(vitalRecords)
      .values(
        DEFAULT_VITAL_RECORDS.map((vital) => {
          const elderId = elderIdByName.get(vital.elderName);
          if (!elderId) {
            throw new Error("默认生命体征初始化失败");
          }

          return {
            organizationId,
            elderId,
            recordedAt: new Date(now.getTime() - vital.recordedHoursAgo * 60 * 60 * 1000),
            source: vital.source,
            systolicBp: vital.systolicBp,
            diastolicBp: vital.diastolicBp,
            heartRate: vital.heartRate,
            temperatureTenths: vital.temperatureTenths,
            spo2: vital.spo2,
            bloodGlucoseTenths: vital.bloodGlucoseTenths,
            weightTenths: vital.weightTenths,
            notes: vital.notes,
          };
        }),
      )
      .returning();
    if (vitalRows.length !== DEFAULT_VITAL_RECORDS.length) {
      throw new Error("默认生命体征初始化失败");
    }

    await transaction.insert(chronicConditions).values(
      DEFAULT_CHRONIC_CONDITIONS.map((condition) => {
        const elderId = elderIdByName.get(condition.elderName);
        if (!elderId) {
          throw new Error("默认慢病记录初始化失败");
        }

        return {
          organizationId,
          elderId,
          name: condition.name,
          status: condition.status,
          treatmentNotes: condition.treatmentNotes,
          followUpNotes: condition.followUpNotes,
        };
      }),
    );

    await transaction.insert(healthAnomalyReviews).values(
      DEFAULT_HEALTH_REVIEWS.map((review) => {
        const elderId = elderIdByName.get(review.elderName);
        const vital = vitalRows[review.vitalIndex];
        if (!elderId || !vital) {
          throw new Error("默认健康异常复核初始化失败");
        }

        return {
          organizationId,
          elderId,
          vitalRecordId: vital.id,
          severity: review.severity,
          status: review.status,
          title: review.title,
          description: review.description,
          resolutionNotes: review.resolutionNotes,
        };
      }),
    );

    await transaction.insert(systemIncidents).values([
      {
        organizationId,
        severity: "warning",
        status: "open",
        title: "床头呼叫器待检修",
        description: "A102-2 床位呼叫器处于检修状态，完成后可恢复使用。",
        source: "默认工作区初始化",
      },
      {
        organizationId,
        severity: "info",
        status: "acknowledged",
        title: "本周护理评估待完成",
        description: "陈秀英、何德明等待入住评估，可在老人档案和床位工作区继续处理。",
        source: "默认工作区初始化",
      },
      {
        organizationId,
        severity: "critical",
        status: "resolved",
        title: "夜间巡房异常已处理",
        description: "重点照护房夜间巡房提醒已恢复，保留事件用于状态页验证。",
        source: "默认工作区初始化",
      },
    ]);
  });
}