import type { IResourceInventoryService } from "@metis/resources/services";
import type { UniqueID } from "@repo/rdx-ddd";
import { Result } from "@repo/rdx-utils";
import { QueryTypes, type Sequelize, type Transaction } from "sequelize";
import { z } from "zod/v4";

import type {
  ITicketInventoryService,
  ITicketRepository,
  TicketContext,
  TicketLookups,
  TicketSaveContext,
} from "../../application/ticket.repository";
import type { Ticket } from "../../domain/ticket.aggregate";
import { TicketError } from "../../domain/ticket-values";

import { TicketPersistenceMapper, ticketIdentity } from "./ticket-persistence.mapper";
export class SequelizeTicketRepository implements ITicketRepository {
  private readonly mapper = new TicketPersistenceMapper();
  constructor(
    private readonly database: Sequelize,
    private readonly inventory: ITicketInventoryService,
    private readonly resources: IResourceInventoryService
  ) {}
  private async read(
    company: UniqueID | undefined,
    transaction: Transaction
  ): Promise<Result<TicketContext, TicketError>> {
    const companies = await this.database.query<{ id: string; name: string; active: boolean }>(
      "SELECT id,name,active FROM companies ORDER BY name",
      { transaction, type: QueryTypes.SELECT }
    );
    if (company && !companies.some((item) => item.id === company.toPrimitive())) {
      return Result.fail(new TicketError("COMPANY_NOT_FOUND"));
    }
    const users = await this.database.query<{ id: string; name: string; active: boolean }>(
      "SELECT id,name,active FROM users ORDER BY name",
      { transaction, type: QueryTypes.SELECT }
    );
    const people = await this.database.query<{
      id: string;
      companyId: string;
      name: string;
      active: boolean;
    }>("SELECT id,companyId,name,active FROM company_contacts", {
      transaction,
      type: QueryTypes.SELECT,
    });
    const where = company ? " WHERE companyId=:companyId" : "";
    const roots = await this.database.query<Record<string, unknown>>(
      "SELECT id,companyId,reference,requestKey,requesterId,assigneeId,`values` FROM tickets" +
        where,
      {
        transaction,
        type: QueryTypes.SELECT,
        replacements: { companyId: company?.toPrimitive() ?? null },
      }
    );
    const revisions = await this.database.query<Record<string, unknown>>(
      "SELECT r.id,r.ticketId,r.actorId,r.requesterId,r.assigneeId,r.`values`,r.recordedAt,r.position FROM ticket_revisions r JOIN tickets t ON t.id=r.ticketId" +
        (company ? " WHERE t.companyId=:companyId" : ""),
      {
        transaction,
        type: QueryTypes.SELECT,
        replacements: { companyId: company?.toPrimitive() ?? null },
      }
    );
    const option = (item: { id: string; name: string; active: boolean }) => ({
      id: ticketIdentity(item.id),
      name: item.name,
      active: Boolean(item.active),
    });
    return Result.ok({
      companies: companies.map(option),
      technicians: users.map(option),
      people: people.map((item) => ({
        ...option(item),
        companyId: ticketIdentity(item.companyId),
      })),
      actorNames: new Map(users.map((item) => [item.id, item.name])),
      tickets: roots.map((row) =>
        this.mapper.toDomain(
          row,
          revisions.filter((item) => item.ticketId === row.id)
        )
      ),
    });
  }
  list(company?: UniqueID) {
    return this.database.transaction((transaction) => this.read(company, transaction));
  }
  async lookups(company: UniqueID): Promise<Result<TicketLookups, TicketError>> {
    const rows = await this.database.query<{ id: string }>(
      "SELECT id FROM companies WHERE id=:id",
      { replacements: { id: company.toPrimitive() }, type: QueryTypes.SELECT }
    );
    if (!rows.length) {
      return Result.fail(new TicketError("COMPANY_NOT_FOUND"));
    }
    return Result.ok(await this.readLookups(company));
  }
  private async readLookups(company: UniqueID): Promise<TicketLookups> {
    const people = await this.database.query<{ id: string; name: string; active: boolean }>(
      "SELECT id,name,active FROM company_contacts WHERE companyId=:id",
      { replacements: { id: company.toPrimitive() }, type: QueryTypes.SELECT }
    );
    const [assets, resources, workstations] = await Promise.all([
      this.inventory.list(company),
      this.resources.list(company),
      this.inventory.workstations(company),
    ]);
    return {
      people: people.map((item) => ({
        id: ticketIdentity(item.id),
        name: item.name,
        active: Boolean(item.active),
      })),
      assets: assets.map((item) => ({ id: item.id, name: item.name, active: item.available })),
      resources: resources.map((item) => ({ id: item.id, name: item.name, active: item.active })),
      workstations,
    };
  }
  save(
    company: UniqueID,
    requestKey: UniqueID,
    action: (context: TicketSaveContext) => Result<Ticket, TicketError>
  ) {
    return this.database.transaction(async (transaction) => {
      await this.database.query("SELECT id FROM companies WHERE id=:id FOR UPDATE", {
        replacements: { id: company.toPrimitive() },
        transaction,
        type: QueryTypes.SELECT,
      });
      await this.database.query("SELECT id FROM ticket_counter WHERE id=1 FOR UPDATE", {
        transaction,
        type: QueryTypes.SELECT,
      });
      const context = await this.read(undefined, transaction);
      if (!context.isSuccess) {
        return Result.fail(context.error);
      }
      if (!context.data.companies.some((item) => item.id.equals(company))) {
        return Result.fail(new TicketError("COMPANY_NOT_FOUND"));
      }
      const sequence = await this.database.query<{ nextNumber: number }>(
        "SELECT nextNumber FROM ticket_counter WHERE id=1",
        { transaction, type: QueryTypes.SELECT }
      );
      const nextNumber = z.number().int().positive().parse(sequence[0]?.nextNumber);
      const scoped = {
        ...context.data,
        tickets: context.data.tickets.filter((item) => item.companyId.equals(company)),
        lookups: await this.readLookups(company),
        nextNumber,
        requestTicket: context.data.tickets.find((item) => item.requestKey.equals(requestKey)),
      };
      const result = action(scoped);
      if (!result.isSuccess) {
        return Result.fail(result.error);
      }
      const previous = context.data.tickets.find((item) => item.id.equals(result.data.id));
      await this.write(result.data, previous, transaction);
      return Result.ok({ ticket: result.data, context: context.data });
    });
  }
  private async write(ticket: Ticket, previous: Ticket | undefined, transaction: Transaction) {
    const data = this.mapper.toPersistence(ticket);
    await this.database.query(
      previous
        ? "UPDATE tickets SET requesterId=:requesterId,assigneeId=:assigneeId,`values`=:values WHERE id=:id"
        : "INSERT INTO tickets (id,companyId,reference,requestKey,requesterId,assigneeId,`values`) VALUES (:id,:companyId,:reference,:requestKey,:requesterId,:assigneeId,:values)",
      { replacements: data.root, transaction }
    );
    const existing = new Set(previous?.history.map((item) => item.id.toPrimitive()) ?? []);
    for (const row of data.revisions) {
      if (!existing.has(row.id)) {
        await this.database.query(
          "INSERT INTO ticket_revisions (id,ticketId,actorId,requesterId,assigneeId,`values`,recordedAt,position) VALUES (:id,:ticketId,:actorId,:requesterId,:assigneeId,:values,:recordedAt,:position)",
          { replacements: row, transaction }
        );
      }
    }
    if (!previous) {
      await this.database.query("UPDATE ticket_counter SET nextNumber=nextNumber+1 WHERE id=1", {
        transaction,
      });
    }
  }
}