package mock

import (
	"context"
	"fmt"

	"tera-clone/services/tera-api/internal/domain"
	"tera-clone/services/tera-api/internal/logservice"
)

func (s *Store) ClearSystemLogs(ctx context.Context) (domain.SystemLogClearResult, error) {
	if _, err := s.RecordAudit(ctx, domain.AuditEvent{Action: "log.system.clear.request", Target: "system", Result: "succeeded", Message: "administrator requested clearing system events; audit records are preserved"}); err != nil {
		return domain.SystemLogClearResult{}, err
	}
	s.mu.Lock()
	defer s.mu.Unlock()
	deleted := 0
	if s.logJournal != nil {
		cleaner, ok := s.logJournal.(logservice.SystemLogCleaner)
		if !ok {
			return domain.SystemLogClearResult{}, fmt.Errorf("system log clearing is not supported by this journal")
		}
		count, err := cleaner.ClearSystem()
		if err != nil {
			return domain.SystemLogClearResult{}, err
		}
		deleted = count
		if err := s.refreshSystemJournalLocked(); err != nil {
			return domain.SystemLogClearResult{}, err
		}
	} else {
		before, loaded := s.systemLogEvents, s.systemLogLoaded
		deleted = len(before)
		s.systemLogEvents, s.systemLogLoaded = []domain.SystemLogEvent{}, true
		if err := s.persistSystemLogStoreLocked(); err != nil {
			s.systemLogEvents, s.systemLogLoaded = before, loaded
			return domain.SystemLogClearResult{}, err
		}
	}
	id := s.recordAuditLocked(ctx, "log.system.clear", "system", "succeeded", fmt.Sprintf("cleared %d system event records; audit, port and link logs preserved", deleted))
	return domain.SystemLogClearResult{Deleted: deleted, AuditID: id}, nil
}