package service

import (
	"context"
	"time"

	"github.com/prabhupadasays/spsays-bff/internal/model"
)

// ListShortURLs pages the shortened-URL table for the admin panel.
func (s *AdminService) ListShortURLs(ctx context.Context, q string, limit, offset int) ([]model.AdminShortURL, int, error) {
	return s.repo.ListShortURLs(ctx, q, limit, offset)
}

// ShortURLStats computes the today / this-week / this-month / all-time short-URL
// summary (and an optional custom range). The fixed windows are UTC-calendar
// based: today from 00:00 UTC, week from Monday 00:00 UTC, month from the 1st.
func (s *AdminService) ShortURLStats(ctx context.Context, from, to *time.Time) (*model.ShortURLStats, error) {
	now := time.Now().UTC()
	todayStart := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.UTC)
	// Monday as the first day of the week (Weekday: Sun=0 … Sat=6).
	weekStart := todayStart.AddDate(0, 0, -((int(now.Weekday()) + 6) % 7))
	monthStart := time.Date(now.Year(), now.Month(), 1, 0, 0, 0, 0, time.UTC)
	return s.repo.ShortURLStats(ctx, todayStart, weekStart, monthStart, from, to)
}