import { Injectable } from '@nestjs/common';
import { InjectPinoLogger, PinoLogger } from 'nestjs-pino';
import { BaseCrudService } from '../common/base-crud.service.js';
import { PrismaService } from '../prisma/prisma.service.js';
import { getRequestContext } from '../common/context/request-context.js';
import { ListLoginLogQuery } from './dto.js';

export interface LoginLogEntry {
  tenantCode: string;
  username?: string | null;
  ip?: string | null;
  userAgent?: string | null;
  status: string;
  message?: string | null;
}

@Injectable()
export class LoginLogsService extends BaseCrudService {
  constructor(
    prisma: PrismaService,
    @InjectPinoLogger(LoginLogsService.name) private readonly logger: PinoLogger,
  ) {
    super(prisma, 'loginLog');
  }

  /** 写入一条登录日志；失败仅告警，不抛出。 */
  async record(data: LoginLogEntry): Promise<void> {
    try {
      await this.db().create({ data });
    } catch (err) {
      this.logger.warn({ err }, '登录日志写入失败');
    }
  }

  async listLoginLogs(q: ListLoginLogQuery) {
    const ctx = getRequestContext();
    const where: Record<string, unknown> = {};
    if (q.username) where.username = { contains: q.username };
    if (q.status) where.status = q.status;
    // 数据权限：仅本人按 username；否则按可见部门内的用户
    if (ctx && ctx.dataScope !== 'all') {
      if (ctx.dataScope === 'self') {
        where.username = ctx.username;
      } else {
        const usernames = ctx.orgCodes.length
          ? (
              await this.prisma.client.user.findMany({
                where: { tenantCode: ctx.tenantCode, orgCode: { in: ctx.orgCodes }, deletedAt: null },
                select: { username: true },
              })
            ).map((u) => u.username)
          : [];
        where.username = { in: usernames };
      }
    }
    return this.paginate(q.page, q.pageSize, where);
  }
}