package requests

import (
	"context"
	"time"
)

type Store interface {
	GetSettings(ctx context.Context) (Settings, error)
	UpdateSettings(ctx context.Context, settings Settings) (Settings, error)
	GetUserLimit(ctx context.Context, userID int) (*UserLimit, error)
	UpsertUserLimit(ctx context.Context, limit UserLimit) (*UserLimit, error)
	CountUserRequestsSince(ctx context.Context, userID int, since time.Time) (int, error)
	ListActiveByTMDB(ctx context.Context, mediaType MediaType, tmdbIDs []int) (map[int]*Request, error)
	// DeleteFailedByTMDB removes prior failed requests for a given media so a
	// re-request does not leave behind stale rows in user/admin lists.
	DeleteFailedByTMDB(ctx context.Context, mediaType MediaType, tmdbID int) (int, error)
	CreateRequest(ctx context.Context, input CreateRequestRecord) (*Request, error)
	GetRequest(ctx context.Context, id string) (*Request, error)
	ListReconciliationCandidates(ctx context.Context, limit int) ([]*Request, error)
	// ListFulfilledUnnotified returns completed requests whose fulfillment
	// notification has not fired yet (presence-gated notify pass).
	ListFulfilledUnnotified(ctx context.Context, limit int) ([]*Request, error)
	// MarkFulfilledNotified stamps a request's fulfillment-notification
	// marker so the notify pass stops considering it. Idempotent.
	MarkFulfilledNotified(ctx context.Context, id string) error
	ListMine(ctx context.Context, userID int, filter ListFilter) ([]*Request, error)
	ListAdmin(ctx context.Context, filter ListFilter) ([]*Request, error)
	SetStatus(ctx context.Context, id string, status Status, actor Viewer) (*Request, error)
	SetOutcome(ctx context.Context, id string, outcome Outcome, actor Viewer, message string) (*Request, error)
	ListTargets(ctx context.Context, requestID string) ([]Target, error)
	CreateTarget(ctx context.Context, target Target) (Target, error)
	DeleteTarget(ctx context.Context, id int64) error
	UpdateTargetStatus(ctx context.Context, targetID int64, status Status, externalID, externalStatus, lastErr string, actor Viewer) (*Request, error)
	ListIntegrations(ctx context.Context) ([]Integration, error)
	GetIntegration(ctx context.Context, id string) (*Integration, error)
	CreateIntegration(ctx context.Context, integration Integration) (*Integration, error)
	UpdateIntegration(ctx context.Context, integration Integration) (*Integration, error)
	// SaveIntegrationWithDefaults clears the conflicting kind default(s) and
	// creates (isCreate) or updates the instance atomically in one transaction.
	SaveIntegrationWithDefaults(ctx context.Context, integration Integration, isCreate bool) (*Integration, error)
	DeleteIntegration(ctx context.Context, id string) error
}

type CreateRequestRecord struct {
	ID        string
	Input     CreateRequestInput
	Status    Status
	Outcome   Outcome
	IsAnime   bool
	Requester Viewer
	Now       time.Time
	// Quota, when non-nil, instructs the store to atomically verify the
	// requester is below their per-user limit before inserting. The check
	// runs inside the same transaction as the insert with a per-user
	// advisory lock so concurrent submissions cannot both exceed the limit.
	Quota *QuotaCheck
}

type QuotaCheck struct {
	UserID      int
	WindowStart time.Time
	MaxRequests int
}