package finance

import (
	"context"

	"bindbox-game/internal/pkg/logger"
	"bindbox-game/internal/repository/mysql"
	"gorm.io/gorm"
)

// Service defines the finance P&L query interface.
type Service interface {
	QueryUserProfitLoss(ctx context.Context, params UserProfitLossParams) (*ProfitLossResult, error)
	QueryActivityProfitLoss(ctx context.Context, params ActivityProfitLossParams) (*ProfitLossResult, error)
}

type service struct {
	logger logger.CustomLogger
	dbR    *gorm.DB // read replica only — QUA-02: no writes in this package
}

// New creates a new finance Service backed by the read-only DB replica.
// CRITICAL: only db.GetDbR() is called — never GetDbW() (QUA-02).
func New(l logger.CustomLogger, db mysql.Repo) Service {
	return &service{
		logger: l,
		dbR:    db.GetDbR(),
	}
}

// QueryUserProfitLoss dispatches to the user-dimension implementation (Plan 02).
func (s *service) QueryUserProfitLoss(ctx context.Context, params UserProfitLossParams) (*ProfitLossResult, error) {
	return s.queryUser(ctx, params)
}

// QueryActivityProfitLoss dispatches to the activity-dimension implementation (Plan 03).
func (s *service) QueryActivityProfitLoss(ctx context.Context, params ActivityProfitLossParams) (*ProfitLossResult, error) {
	return s.queryActivity(ctx, params)
}