package duplicatechecker

import (
	"time"

	"github.com/mayswind/ezbookkeeping/pkg/errs"
	"github.com/mayswind/ezbookkeeping/pkg/settings"
)

// DuplicateCheckerContainer contains the current duplicate checker
type DuplicateCheckerContainer struct {
	current DuplicateChecker
}

// Initialize a duplicate checker container singleton instance
var (
	Container = &DuplicateCheckerContainer{}
)

// InitializeDuplicateChecker initializes the current duplicate checker according to the config
func InitializeDuplicateChecker(config *settings.Config) error {
	if config.DuplicateCheckerType == settings.InMemoryDuplicateCheckerType {
		checker, err := NewInMemoryDuplicateChecker(config)
		Container.current = checker

		return err
	}

	return errs.ErrInvalidDuplicateCheckerType
}

// SetDuplicateChecker sets the current duplicate checker
func SetDuplicateChecker(checker DuplicateChecker) {
	Container.current = checker
}

// IsEnabled returns whether the duplicate checker is enabled
func (c *DuplicateCheckerContainer) IsEnabled() bool {
	return c.current != nil
}

// GetSubmissionRemark returns whether the same submission has been processed and related remark by the current duplicate checker
func (c *DuplicateCheckerContainer) GetSubmissionRemark(checkerType DuplicateCheckerType, uid int64, identification string) (bool, string) {
	if c.current == nil {
		return false, ""
	}

	return c.current.GetSubmissionRemark(checkerType, uid, identification)
}

// SetSubmissionRemark saves the identification and remark by the current duplicate checker
func (c *DuplicateCheckerContainer) SetSubmissionRemark(checkerType DuplicateCheckerType, uid int64, identification string, remark string) {
	if c.current == nil {
		return
	}

	c.current.SetSubmissionRemark(checkerType, uid, identification, remark)
}

// SetSubmissionRemarkWithCustomExpiration saves the identification and remark by the current duplicate checker with custom expiration time
func (c *DuplicateCheckerContainer) SetSubmissionRemarkWithCustomExpiration(checkerType DuplicateCheckerType, uid int64, identification string, remark string, expiration time.Duration) {
	if c.current == nil {
		return
	}

	c.current.SetSubmissionRemarkWithCustomExpiration(checkerType, uid, identification, remark, expiration)
}

// RemoveSubmissionRemark removes the identification and remark by the current duplicate checker
func (c *DuplicateCheckerContainer) RemoveSubmissionRemark(checkerType DuplicateCheckerType, uid int64, identification string) {
	if c.current == nil {
		return
	}

	c.current.RemoveSubmissionRemark(checkerType, uid, identification)
}

// GetOrSetCronJobRunningInfo returns the running info when the cron job is running or saves the running info by the current duplicate checker
func (c *DuplicateCheckerContainer) GetOrSetCronJobRunningInfo(jobName string, runningInfo string, runningInterval time.Duration) (bool, string) {
	if c.current == nil {
		return false, ""
	}

	return c.current.GetOrSetCronJobRunningInfo(jobName, runningInfo, runningInterval)
}

// RemoveCronJobRunningInfo removes the running info of the cron job by the current duplicate checker
func (c *DuplicateCheckerContainer) RemoveCronJobRunningInfo(jobName string) {
	if c.current == nil {
		return
	}

	c.current.RemoveCronJobRunningInfo(jobName)
}

// GetFailureCount returns the failure count of the specified failure key
func (c *DuplicateCheckerContainer) GetFailureCount(failureKey string) uint32 {
	if c.current == nil {
		return 0
	}

	return c.current.GetFailureCount(failureKey)
}

// IncreaseFailureCount increases the failure count of the specified failure key
func (c *DuplicateCheckerContainer) IncreaseFailureCount(failureKey string) uint32 {
	if c.current == nil {
		return 0
	}

	return c.current.IncreaseFailureCount(failureKey)
}