import {
  Op,
  type Includeable,
  type InferAttributes,
  type InferCreationAttributes,
  type WhereAttributeHash,
} from 'sequelize';
import db from '@/db/models';
import {
  removeRecord,
  deleteRecordsByIds,
  autocompleteByField,
} from '@/db/api/shared/repository';
import { BULK_IMPORT_TIMESTAMP_STEP_MS } from '@/shared/constants/database';
import { resolvePagination } from '@/shared/constants/pagination';
import Utils from '@/db/utils';
import FileDBApi from '@/db/api/file';
import type { Messages } from '@/db/models/messages';
import type { CurrentUser, DbApiOptions, FileInput } from '@/db/api/types';

type MessagesData = Partial<InferCreationAttributes<Messages>> & {
  organization?: string | null;
  campus?: string | null;
  sent_by?: string | null;
  attachments?: FileInput | FileInput[] | null;
};

interface MessagesFilter {
  limit?: number | string;
  page?: number | string;
  id?: string;
  subject?: string;
  body?: string;
  sent_atRange?: Array<string | null | undefined>;
  active?: boolean | string;
  channel?: string;
  audience?: string;
  status?: string;
  campus?: string;
  sent_by?: string;
  organization?: string;
  createdAtRange?: Array<string | null | undefined>;
  field?: string;
  sort?: string;
}

const NO_USER: CurrentUser = { id: null };

function messagesTableName(): string {
  const name = db.messages.getTableName();
  return typeof name === 'string' ? name : name.tableName;
}

class MessagesDBApi {
  static async create(
    data: MessagesData,
    options?: DbApiOptions,
  ): Promise<Messages> {
    const currentUser = options?.currentUser ?? NO_USER;
    const transaction = options?.transaction;

    const messages = await db.messages.create(
      {
        id: data.id || undefined,
        subject: data.subject || null,
        body: data.body || null,
        channel: data.channel || null,
        audience: data.audience || null,
        sent_at: data.sent_at || null,
        status: data.status || null,
        importHash: data.importHash || null,
        createdById: currentUser.id,
        updatedById: currentUser.id,
      },
      { transaction },
    );

    await messages.setOrganization(currentUser.organizationId ?? undefined, {
      transaction,
    });
    await messages.setCampus(data.campus ?? undefined, { transaction });
    await messages.setSent_by(data.sent_by ?? undefined, { transaction });

    await FileDBApi.replaceRelationFiles(
      {
        belongsTo: messagesTableName(),
        belongsToColumn: 'attachments',
        belongsToId: messages.id,
      },
      data.attachments,
      options,
    );

    return messages;
  }

  static async bulkImport(
    data: MessagesData[],
    options?: DbApiOptions,
  ): Promise<Messages[]> {
    const currentUser = options?.currentUser ?? NO_USER;
    const transaction = options?.transaction;

    const messagesData = data.map((item, index) => ({
      id: item.id || undefined,
      subject: item.subject || null,
      body: item.body || null,
      channel: item.channel || null,
      audience: item.audience || null,
      sent_at: item.sent_at || null,
      status: item.status || null,
      importHash: item.importHash || null,
      createdById: currentUser.id,
      updatedById: currentUser.id,
      createdAt: new Date(Date.now() + index * BULK_IMPORT_TIMESTAMP_STEP_MS),
    }));

    const messages = await db.messages.bulkCreate(messagesData, { transaction });

    for (let i = 0; i < messages.length; i++) {
      await FileDBApi.replaceRelationFiles(
        {
          belongsTo: messagesTableName(),
          belongsToColumn: 'attachments',
          belongsToId: messages[i].id,
        },
        data[i].attachments,
        options,
      );
    }

    return messages;
  }

  static async update(
    id: string,
    data: MessagesData,
    options?: DbApiOptions,
  ): Promise<Messages | null> {
    const currentUser = options?.currentUser ?? NO_USER;
    const transaction = options?.transaction;
    const globalAccess = currentUser.app_role?.globalAccess;

    const messages = await db.messages.findByPk(id, { transaction });

    if (!messages) {
      return null;
    }

    const updatePayload: Partial<InferAttributes<Messages>> = {};

    if (data.subject !== undefined) updatePayload.subject = data.subject;
    if (data.body !== undefined) updatePayload.body = data.body;
    if (data.channel !== undefined) updatePayload.channel = data.channel;
    if (data.audience !== undefined) updatePayload.audience = data.audience;
    if (data.sent_at !== undefined) updatePayload.sent_at = data.sent_at;
    if (data.status !== undefined) updatePayload.status = data.status;

    updatePayload.updatedById = currentUser.id;

    await messages.update(updatePayload, { transaction });

    if (data.organization !== undefined) {
      const orgId = globalAccess
        ? data.organization
        : currentUser.organizationId;
      await messages.setOrganization(orgId ?? undefined, { transaction });
    }
    if (data.campus !== undefined) {
      await messages.setCampus(data.campus ?? undefined, { transaction });
    }
    if (data.sent_by !== undefined) {
      await messages.setSent_by(data.sent_by ?? undefined, { transaction });
    }

    await FileDBApi.replaceRelationFiles(
      {
        belongsTo: messagesTableName(),
        belongsToColumn: 'attachments',
        belongsToId: messages.id,
      },
      data.attachments,
      options,
    );

    return messages;
  }

  static async deleteByIds(
    ids: string[],
    options?: DbApiOptions,
  ): Promise<Messages[]> {
    return deleteRecordsByIds(db.messages, ids, options);
  }

  static async remove(
    id: string,
    options?: DbApiOptions,
  ): Promise<Messages | null> {
    return removeRecord(db.messages, id, options);
  }

  static async findBy(
    where: WhereAttributeHash,
    options?: DbApiOptions,
  ): Promise<Record<string, unknown> | null> {
    const transaction = options?.transaction;

    const messages = await db.messages.findOne({ where, transaction });

    if (!messages) {
      return null;
    }

    const output: Record<string, unknown> = messages.get({ plain: true });

    const [
      message_recipients_message,
      organization,
      campus,
      sent_by,
      attachments,
    ] = await Promise.all([
      messages.getMessage_recipients_message({ transaction }),
      messages.getOrganization({ transaction }),
      messages.getCampus({ transaction }),
      messages.getSent_by({ transaction }),
      messages.getAttachments({ transaction }),
    ]);
    output.message_recipients_message = message_recipients_message;
    output.organization = organization;
    output.campus = campus;
    output.sent_by = sent_by;
    output.attachments = attachments;

    return output;
  }

  static async findAll(
    filter: MessagesFilter,
    globalAccess: boolean,
    options?: DbApiOptions,
  ): Promise<{ rows: Messages[]; count: number }> {
    const { limit, offset } = resolvePagination(filter.limit, filter.page);

    let where: WhereAttributeHash = {};

    const userOrganizations = options?.currentUser?.organizations?.id ?? null;
    if (userOrganizations && options?.currentUser?.organizationId) {
      where.organizationId = options.currentUser.organizationId;
    }

    const include: Includeable[] = [
      { model: db.organizations, as: 'organization' },
      {
        model: db.campuses,
        as: 'campus',
        where: filter.campus
          ? {
              [Op.or]: [
                {
                  id: {
                    [Op.in]: filter.campus.split('|').map((t) => Utils.uuid(t)),
                  },
                },
                {
                  name: {
                    [Op.or]: filter.campus
                      .split('|')
                      .map((t) => ({ [Op.iLike]: `%${t}%` })),
                  },
                },
              ],
            }
          : {},
      },
      {
        model: db.users,
        as: 'sent_by',
        where: filter.sent_by
          ? {
              [Op.or]: [
                {
                  id: {
                    [Op.in]: filter.sent_by.split('|').map((t) => Utils.uuid(t)),
                  },
                },
                {
                  firstName: {
                    [Op.or]: filter.sent_by
                      .split('|')
                      .map((t) => ({ [Op.iLike]: `%${t}%` })),
                  },
                },
              ],
            }
          : {},
      },
      { model: db.file, as: 'attachments' },
    ];

    if (filter.id) {
      where = { ...where, id: Utils.uuid(filter.id) };
    }
    if (filter.subject) {
      where = {
        ...where,
        [Op.and]: Utils.ilike('messages', 'subject', filter.subject),
      };
    }
    if (filter.body) {
      where = {
        ...where,
        [Op.and]: Utils.ilike('messages', 'body', filter.body),
      };
    }
    if (filter.sent_atRange) {
      const [start, end] = filter.sent_atRange;
      if (start !== undefined && start !== null && start !== '') {
        where = { ...where, sent_at: { [Op.gte]: start } };
      }
      if (end !== undefined && end !== null && end !== '') {
        where = {
          ...where,
          sent_at: {
            ...(typeof where.sent_at === 'object' ? where.sent_at : {}),
            [Op.lte]: end,
          },
        };
      }
    }
    if (filter.active !== undefined) {
      where = {
        ...where,
        active: filter.active === true || filter.active === 'true',
      };
    }
    if (filter.channel) {
      where = { ...where, channel: filter.channel };
    }
    if (filter.audience) {
      where = { ...where, audience: filter.audience };
    }
    if (filter.status) {
      where = { ...where, status: filter.status };
    }
    if (filter.organization) {
      const listItems = filter.organization
        .split('|')
        .map((item) => Utils.uuid(item));
      where = { ...where, organizationId: { [Op.or]: listItems } };
    }
    if (filter.createdAtRange) {
      const [start, end] = filter.createdAtRange;
      if (start !== undefined && start !== null && start !== '') {
        where = { ...where, createdAt: { [Op.gte]: start } };
      }
      if (end !== undefined && end !== null && end !== '') {
        where = {
          ...where,
          createdAt: {
            ...(typeof where.createdAt === 'object' ? where.createdAt : {}),
            [Op.lte]: end,
          },
        };
      }
    }

    if (globalAccess) {
      delete where.organizationId;
    }

    const order: [string, string][] =
      filter.field && filter.sort
        ? [[filter.field, filter.sort]]
        : [['createdAt', 'desc']];

    const { rows, count } = await db.messages.findAndCountAll({
      where,
      include,
      distinct: true,
      order,
      transaction: options?.transaction,
      limit: !options?.countOnly && limit ? limit : undefined,
      offset: !options?.countOnly && offset ? offset : undefined,
    });

    return { rows: options?.countOnly ? [] : rows, count };
  }

  static async findAllAutocomplete(
    query: string | undefined,
    limit: number | undefined,
    offset: number | undefined,
    globalAccess: boolean,
    organizationId: string | undefined,
  ): Promise<Array<{ id: string; label: string | null }>> {
    return autocompleteByField(
      db.messages,
      'subject',
      query,
      limit,
      offset,
      globalAccess,
      organizationId,
    );
  }
}

export default MessagesDBApi;