package store

import (
	"context"
	"fmt"

	"github.com/jackc/pgx/v5/pgxpool"

	"git.kundeng.us/phoenix/textsender-models/pkg/message"
)

type MessageStore interface {
	CreateMessage(ctx context.Context, msg *message.Message) error
	MessageExists(ctx context.Context, msg *message.Message) (bool, error)
}

type PGMessageStore struct {
	db *pgxpool.Pool
}

func NewMessageStore(db *pgxpool.Pool) *PGMessageStore {
	return &PGMessageStore{db: db}
}

func (m *PGMessageStore) CreateMessage(ctx context.Context, msg *message.Message) error {
	query := `
	INSERT INTO messages (content, user_id)
	VALUES ($1, $2)
	RETURNING id
	`

	return m.db.QueryRow(ctx, query, msg.Content, msg.UserId).Scan(
		&msg.Id,
	)
}

func (m *PGMessageStore) MessageExists(ctx context.Context, msg *message.Message) (bool, error) {
	query := `SELECT EXISTS(SELECT 1 FROM messages WHERE content = $1 AND user_id = $2)`

	var exists bool
	err := m.db.QueryRow(ctx, query, msg.Content, msg.UserId).Scan(&exists)
	if err != nil {
		return false, fmt.Errorf("checking if message exists: %w", err)
	} else {
		return exists, nil
	}
}