package taskcenter

import (
	"context"
	"time"

	"chatapp3-golang/internal/model"

	"gorm.io/gorm/clause"
)

const (
	archiveManifestObjectArchive  = "ARCHIVE"
	archiveManifestObjectRecovery = "GC_RECOVERY"
	archiveManifestVerified       = "VERIFIED"
)

// upsertArchiveManifest 以 COS key 为不可变对象身份。重验历史对象时只刷新校验结果，
// 不创建重复清单；GC 删除前可据此确认看到的是同一个对象版本和摘要。
func (s *Service) upsertArchiveManifest(ctx context.Context, row model.TaskCenterArchiveManifest) error {
	now := time.Now()
	if row.CreateTime.IsZero() {
		row.CreateTime = now
	}
	row.UpdateTime = now
	return s.db.WithContext(ctx).Clauses(clause.OnConflict{
		Columns: []clause.Column{{Name: "cos_key"}},
		DoUpdates: clause.Assignments(map[string]any{
			"object_type":         row.ObjectType,
			"run_id":              row.RunID,
			"parent_cos_key":      row.ParentCOSKey,
			"sha256":              row.SHA256,
			"etag":                row.ETag,
			"compressed_size":     row.CompressedSize,
			"row_count":           row.RowCount,
			"min_outbox_id":       row.MinOutboxID,
			"max_outbox_id":       row.MaxOutboxID,
			"min_occurred_at":     row.MinOccurredAt,
			"max_occurred_at":     row.MaxOccurredAt,
			"verification_status": row.VerificationStatus,
			"verified_at":         row.VerifiedAt,
			"update_time":         row.UpdateTime,
		}),
	}).Create(&row).Error
}

func archiveGroupBounds(rows []model.TaskCenterEventArchiveOutbox) (*int64, *int64, *time.Time, *time.Time) {
	if len(rows) == 0 {
		return nil, nil, nil, nil
	}
	minID, maxID := rows[0].ID, rows[0].ID
	var minOccurredAt, maxOccurredAt *time.Time
	for _, row := range rows {
		if row.ID < minID {
			minID = row.ID
		}
		if row.ID > maxID {
			maxID = row.ID
		}
		if row.OccurredAt.IsZero() {
			continue
		}
		value := row.OccurredAt
		if minOccurredAt == nil || value.Before(*minOccurredAt) {
			copyValue := value
			minOccurredAt = &copyValue
		}
		if maxOccurredAt == nil || value.After(*maxOccurredAt) {
			copyValue := value
			maxOccurredAt = &copyValue
		}
	}
	return &minID, &maxID, minOccurredAt, maxOccurredAt
}