phoenixandphoenix
607059e7ce
Closes #12 Reviewed-on: phoenix/textsender-api#18 Co-authored-by: phoenix <kundeng00@pm.me> Co-committed-by: phoenix <kundeng00@pm.me>
97 lines
2.3 KiB
Go
97 lines
2.3 KiB
Go
package store
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import (
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"context"
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"fmt"
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"github.com/google/uuid"
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"github.com/jackc/pgx/v5"
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"github.com/jackc/pgx/v5/pgxpool"
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"git.kundeng.us/phoenix/textsender-models/pkg/message"
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)
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type MessageStore interface {
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GetMessageByID(ctx context.Context, id uuid.UUID) (*message.Message, error)
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CreateMessage(ctx context.Context, msg *message.Message) error
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GetAllMessages(ctx context.Context) ([]*message.Message, error)
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MessageExists(ctx context.Context, msg *message.Message) (bool, error)
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}
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type PGMessageStore struct {
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db *pgxpool.Pool
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}
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func NewMessageStore(db *pgxpool.Pool) *PGMessageStore {
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return &PGMessageStore{db: db}
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}
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func (m *PGMessageStore) CreateMessage(ctx context.Context, msg *message.Message) error {
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query := `
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INSERT INTO messages (content, user_id)
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VALUES ($1, $2)
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RETURNING id
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`
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return m.db.QueryRow(ctx, query, msg.Content, msg.UserId).Scan(
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&msg.Id,
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)
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}
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func (m *PGMessageStore) MessageExists(ctx context.Context, msg *message.Message) (bool, error) {
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query := `SELECT EXISTS(SELECT 1 FROM messages WHERE content = $1 AND user_id = $2)`
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var exists bool
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err := m.db.QueryRow(ctx, query, msg.Content, msg.UserId).Scan(&exists)
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if err != nil {
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return false, fmt.Errorf("checking if message exists: %w", err)
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} else {
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return exists, nil
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}
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}
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func (m *PGMessageStore) GetAllMessages(ctx context.Context) ([]*message.Message, error) {
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query := `SELECT id, content, user_id FROM messages`
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rows, err := m.db.Query(ctx, query)
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if err != nil {
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return nil, fmt.Errorf("querying all messages: %w", err)
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}
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defer rows.Close()
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var messages []*message.Message
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for rows.Next() {
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var msg message.Message
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if err := rows.Scan(
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&msg.Id, &msg.Content, &msg.UserId,
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); err != nil {
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return nil, fmt.Errorf("scanning message row: %w", err)
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}
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messages = append(messages, &msg)
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}
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if err := rows.Err(); err != nil {
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return nil, fmt.Errorf("iterating message rows: %w", err)
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}
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return messages, nil
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}
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func (m *PGMessageStore) GetMessageByID(ctx context.Context, id uuid.UUID) (*message.Message, error) {
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query := `SELECT id, content, user_id FROM messages WHERE id = $1`
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var msg message.Message
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err := m.db.QueryRow(ctx, query, id).Scan(
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&msg.Id, &msg.Content, &msg.UserId,
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)
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if err == pgx.ErrNoRows {
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return nil, nil
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}
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if err != nil {
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return nil, fmt.Errorf("getting message by ID: %w", err)
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}
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return &msg, nil
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}
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