package backend

import (
	"context"
	"database/sql"
	"errors"
	"fmt"

	"git.faercol.me/faercol/polyculeconnect/polyculeconnect/internal/model"
)

var ErrNotFound = errors.New("backend not found")

// const backendRows = `"id", "name", "oidc_id", "oidc_secret"`
const backendRows = `"id", "name"`

type BackendDB interface {
	GetBackendByName(ctx context.Context, name string) (*model.Backend, error)
}

type sqlBackendDB struct {
	db *sql.DB
}

func backendFromRow(row sql.Row) (*model.Backend, error) {
	var res model.Backend

	if err := row.Scan(&res.ID, &res.Name); err != nil {
		if errors.Is(err, sql.ErrNoRows) {
			return nil, ErrNotFound
		}
		return nil, fmt.Errorf("invalid format for backend: %w", err)
	}
	return &res, nil
}

func (db *sqlBackendDB) GetBackendByName(ctx context.Context, name string) (*model.Backend, error) {
	query := fmt.Sprintf(`SELECT %s FROM "backend" WHERE "name" = ?`, backendRows)
	fmt.Println(query, name)
	row := db.db.QueryRowContext(ctx, query, name)
	return backendFromRow(*row)
}

func New(db *sql.DB) *sqlBackendDB {
	return &sqlBackendDB{db: db}
}