package payments

import (
	"context"
	"time"

	"github.com/google/uuid"
)

// Statement is an account's full financial picture for the admin console: chip balances per funding
// segment, benefits per origin, the recorded refund risk, and the append-only ledger history
// (newest first). Read straight from the materialized tables + the ledger, uncached — an admin-only,
// rare view, not a hot path.
type Statement struct {
	Segments []SegmentChips
	Benefits []OriginBenefit
	Risk     RiskInfo
	Ledger   []LedgerEntry
}

// SegmentChips is one funding segment's chip balance.
type SegmentChips struct {
	Source Source
	Chips  int
}

// OriginBenefit is one origin's benefit state: the hint wallet, the ad-free term (zero AdsPaidUntil
// when none) and the lifetime ad-free flag.
type OriginBenefit struct {
	Origin       Source
	Hints        int
	AdsPaidUntil time.Time
	AdsForever   bool
}

// RiskInfo is the account's recorded refund risk: whether it is abuse-flagged and the unrecoverable
// chip loss accumulated by floor-0 refunds. Present is false when the account has no risk row.
type RiskInfo struct {
	Present   bool
	Abuse     bool
	LossChips int
}

// LedgerEntry is one append-only ledger row projected for the report. The string ids are empty when
// the column is NULL; Shop is the direct-rail merchant channel the referenced order used (empty for
// other rails or order-less rows); Snapshot is the raw purchase/refund JSON (empty when none).
type LedgerEntry struct {
	Kind              string
	Source            string
	Origin            string
	ChipsDelta        int
	ProductID         string
	OrderID           string
	Provider          string
	ProviderPaymentID string
	Shop              string
	Snapshot          string
	CreatedAt         time.Time
}

// AccountStatement assembles the account's financial picture (segments, benefits, risk, full ledger
// history) for the admin console, straight from the materialized tables and the ledger (uncached).
func (s *Service) AccountStatement(ctx context.Context, accountID uuid.UUID) (Statement, error) {
	return s.store.accountStatement(ctx, accountID)
}