// packages/api-client/src/usage.ts
// daily_usage 조회 (쿼터 UI 표시용)

import type { D3roSupabaseClient } from './client'
import type { DailyUsage, Subscription } from './types'

export async function getTodayUsage(
  client: D3roSupabaseClient,
  feature: string
): Promise<number> {
  const today = new Date().toISOString().slice(0, 10)
  const { data, error } = await client
    .from('daily_usage')
    .select('count')
    .eq('date', today)
    .eq('feature', feature)
    .maybeSingle()

  if (error) {
    // RLS로 인해 빈 결과도 정상. 에러는 throw하지 않고 0 반환.
    return 0
  }
  return (data?.count as number | undefined) ?? 0
}

export async function listUsageLastDays(
  client: D3roSupabaseClient,
  days: number
): Promise<DailyUsage[]> {
  const since = new Date()
  since.setDate(since.getDate() - days)
  const sinceStr = since.toISOString().slice(0, 10)

  const { data, error } = await client
    .from('daily_usage')
    .select('*')
    .gte('date', sinceStr)
    .order('date', { ascending: false })

  if (error) throw new Error(`listUsageLastDays failed: ${error.message}`)
  return data ?? []
}

export async function getSubscription(
  client: D3roSupabaseClient
): Promise<Subscription | null> {
  const { data, error } = await client
    .from('subscriptions')
    .select('*')
    .maybeSingle()

  if (error) return null
  return data
}