import { ok, fail, asyncHandler } from '../../utils/http.js';
import * as repo from './repository.js';
import { listByProject } from '../activities/service.js';
import { dueStatus } from '../../utils/dates.js';
import { ROLES } from '../../middleware/auth.js';

const FULL_ACCESS_ROLES = [ROLES.SUPERADMIN, ROLES.ADMIN, ROLES.IT_MANAGER];

// Mismo criterio que projects/service.js#listProjects: los roles de administracion ven todo el
// panel; el resto solo cuenta/lista lo de proyectos donde es miembro.
function memberFilterFor(currentUser) {
  return FULL_ACCESS_ROLES.includes(currentUser.roleCode) ? null : currentUser.id;
}

export const getSummary = asyncHandler(async (req, res) => {
  const memberUserId = memberFilterFor(req.currentUser);
  const [kpis, byStatus, overdueProjects, activeProjects, dueSoonProjects,
    pendingActivities, overdueActivities, todayActivities] = await Promise.all([
    repo.summary(memberUserId),
    repo.projectsByStatus(memberUserId),
    repo.overdueProjectsList(memberUserId),
    repo.activeProjectsList(memberUserId),
    repo.dueSoonProjectsList(memberUserId),
    repo.pendingActivitiesList(memberUserId, 'all'),
    repo.pendingActivitiesList(memberUserId, 'overdue'),
    repo.pendingActivitiesList(memberUserId, 'today'),
  ]);
  const withProjectDue = (p) => ({ ...p, dueStatus: dueStatus(p.estimated_end_date) });
  const withActivityDue = (a) => ({ ...a, dueStatus: dueStatus(a.due_date) });
  ok(res, {
    kpis,
    projectsByStatus: byStatus,
    // Detalle de cada tarjeta del Panel (popup al hacer clic).
    overdueProjects: overdueProjects.map((p) => ({ ...p, dueStatus: 'overdue' })),
    activeProjects: activeProjects.map(withProjectDue),
    dueSoonProjects: dueSoonProjects.map(withProjectDue),
    pendingActivities: pendingActivities.map(withActivityDue),
    overdueActivities: overdueActivities.map((a) => ({ ...a, dueStatus: 'overdue' })),
    todayActivities: todayActivities.map(withActivityDue),
  });
});

export const getCalendar = asyncHandler(async (req, res) => {
  const month = req.query.month; // formato YYYY-MM
  if (!month || !/^\d{4}-\d{2}$/.test(month)) return fail(res, 400, 'Parametro month invalido (YYYY-MM)');
  const start = `${month}-01`;
  const [year, m] = month.split('-').map(Number);
  const end = new Date(year, m, 0).toISOString().slice(0, 10);
  const items = await repo.calendarActivities(start, end, memberFilterFor(req.currentUser));
  ok(res, items.map((a) => ({ ...a, dueStatus: dueStatus(a.due_date, a.status_is_closed) })));
});

export const getGantt = asyncHandler(async (req, res) => {
  const activities = await listByProject(Number(req.params.id), req.currentUser);
  ok(res, activities.map((a) => ({
    id: a.id, code: a.code, name: a.name, startDate: a.start_date, dueDate: a.due_date,
    progressPct: a.progress_pct, isMilestone: !!a.is_milestone, responsibleName: a.responsible_name,
  })));
});