85 lines
2.3 KiB
Go
85 lines
2.3 KiB
Go
package models
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import (
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"context"
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"github.com/jackc/pgx/v5/pgxpool"
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"github.com/kjannette/koin-ping/backend-go/internal/domain"
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)
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type CheckpointModel struct {
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pool *pgxpool.Pool
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}
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func NewCheckpointModel(pool *pgxpool.Pool) *CheckpointModel {
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return &CheckpointModel{pool: pool}
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}
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// GetLastCheckedBlock returns the last checked block for an address, or -1 if never checked.
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func (m *CheckpointModel) GetLastCheckedBlock(ctx context.Context, addressID int) (int, bool, error) {
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var block int
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err := m.pool.QueryRow(ctx,
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`SELECT last_checked_block FROM address_checkpoints WHERE address_id = $1`,
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addressID,
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).Scan(&block)
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if err != nil {
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if err.Error() == "no rows in result set" {
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return 0, false, nil
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}
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return 0, false, err
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}
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return block, true, nil
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}
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func (m *CheckpointModel) UpdateLastCheckedBlock(ctx context.Context, addressID, blockNumber int) (*domain.AddressCheckpoint, error) {
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var cp domain.AddressCheckpoint
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err := m.pool.QueryRow(ctx,
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`INSERT INTO address_checkpoints (address_id, last_checked_block, last_checked_at)
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VALUES ($1, $2, NOW())
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ON CONFLICT (address_id)
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DO UPDATE SET
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last_checked_block = $2,
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last_checked_at = NOW()
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RETURNING address_id, last_checked_block, last_checked_at`,
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addressID, blockNumber,
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).Scan(&cp.AddressID, &cp.LastCheckedBlock, &cp.LastCheckedAt)
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if err != nil {
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return nil, err
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}
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return &cp, nil
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}
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func (m *CheckpointModel) ListAll(ctx context.Context) ([]domain.CheckpointDetail, error) {
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rows, err := m.pool.Query(ctx,
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`SELECT ac.address_id, a.address, a.label, ac.last_checked_block, ac.last_checked_at
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FROM address_checkpoints ac
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JOIN addresses a ON a.id = ac.address_id
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ORDER BY ac.last_checked_at DESC`,
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)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var details []domain.CheckpointDetail
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for rows.Next() {
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var d domain.CheckpointDetail
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if err := rows.Scan(&d.AddressID, &d.Address, &d.Label, &d.LastCheckedBlock, &d.LastCheckedAt); err != nil {
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return nil, err
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}
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details = append(details, d)
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}
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return details, rows.Err()
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}
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func (m *CheckpointModel) Remove(ctx context.Context, addressID int) (bool, error) {
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tag, err := m.pool.Exec(ctx,
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`DELETE FROM address_checkpoints WHERE address_id = $1`,
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addressID,
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)
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if err != nil {
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return false, err
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}
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return tag.RowsAffected() > 0, nil
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}
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