aardmapper/mapper.go

package main

import (
	"database/sql"
	"fmt"
	// "log"

	_ "github.com/mattn/go-sqlite3"
)

func NewMapper(fn string) (AardMapper, error) {
	var am AardMapper

	db, err := sql.Open("sqlite3", fn)
	if err != nil {

		return am, fmt.Errorf("error opening mapper sqlite3 database: %s\n", err)
	}
	am.DB = db
	return am, nil
}

type AardMapper struct {
	DB *sql.DB
}

func (am AardMapper) Areas() (map[string]Area, error) {
	areas := make(map[string]Area)
	rows, err := am.DB.Query("select uid, name, texture, color, flags from areas;")
	defer rows.Close()

	if err != nil {
		return nil, fmt.Errorf("error selecting areas: %w", err)
	}
	for rows.Next() {
		a := Area{}
		err := rows.Scan(&a.Uid, &a.Name, &a.Texture, &a.Color, &a.Flags)
		if err != nil {
			return nil, fmt.Errorf("error scanning Areas: %d", err)
		}

		areas[a.Uid.String] = a
	}
	return areas, nil
}

func (am AardMapper) Exits() ([]RoomExit, error) {
	exits := make([]RoomExit, 0)
	rows, err := am.DB.Query("select r.uid,r.name,r.building,r.info,r.notes,r.flags,r.area, r.norecall,r.noportal,e.dir,e.fromuid,e.touid,e.level from rooms r INNER JOIN exits e ON r.uid = e.fromuid;")
	// rows, err := am.DB.Query("select e.dir,e.fromuid,e.touid,e.level from rooms r INNER JOIN exits e ON r.uid = e.fromuid;")
	defer rows.Close()

	if err != nil {
		return nil, fmt.Errorf("error selecting areas: %w", err)
	}
	for rows.Next() {
		e := RoomExit{}
		// err := rows.Scan(&e.Dir, &e.Fromuid, &e.Touid, &e.Level)
		err := rows.Scan(&e.Uid, &e.Name, &e.Building, &e.Info, &e.Notes, &e.Flags, &e.AreaName, &e.Norecall, &e.Noportal, &e.Dir, &e.Fromuid, &e.Touid, &e.Level)
		if err != nil {
			return nil, fmt.Errorf("error scanning Areas: %d", err)
		}

		exits = append(exits, e)
	}
	return exits, nil
}