package mock

import (
	"context"
	"fmt"

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

func (s *Store) ClearPortLogs(ctx context.Context, channel string) (domain.PortLogClearResult, error) {
	if _, err := parseChannel(channel); channel != "ALL" && err != nil {
		return domain.PortLogClearResult{}, err
	}
	// Refuse deletion if its audit request cannot be persisted.
	if _, err := s.RecordAudit(ctx, domain.AuditEvent{Action: "log.port.clear.request", Target: channel, Result: "succeeded", Message: "administrator requested clearing this port's communication logs"}); err != nil {
		return domain.PortLogClearResult{}, err
	}
	s.mu.Lock()
	defer s.mu.Unlock()
	deleted := 0
	if s.logJournal != nil {
		cleaner, ok := s.logJournal.(logservice.PortLogCleaner)
		if !ok {
			return domain.PortLogClearResult{}, fmt.Errorf("port log clearing is not supported by this journal")
		}
		count, err := cleaner.ClearPort(channel)
		if err != nil {
			return domain.PortLogClearResult{}, err
		}
		deleted = count
		if err := s.refreshPortJournalLocked(); err != nil {
			return domain.PortLogClearResult{}, err
		}
	} else {
		before := s.portLogEvents
		kept := make([]domain.PortLogEvent, 0, len(before))
		for _, event := range before {
			if channel == "ALL" || event.Channel == channel {
				deleted++
				continue
			}
			kept = append(kept, event)
		}
		s.portLogEvents, s.portLogLoaded = kept, true
		if err := s.persistPortLogStoreLocked(); err != nil {
			s.portLogEvents = before
			return domain.PortLogClearResult{}, err
		}
	}
	id := s.recordAuditLocked(ctx, "log.port.clear", channel, "succeeded", fmt.Sprintf("cleared %d port communication log records; system, audit and link logs preserved", deleted))
	return domain.PortLogClearResult{Channel: channel, Deleted: deleted, AuditID: id}, nil
}