command_map.go

package main

import (
	"errors"
	"fmt"
)
func callbackMap(cfg *config, args ...string) error {
    resp, err :=cfg.pokeapiClient.ListLocationAreas(cfg.nextLocationAreaURL)
    if err != nil {
        return err
    }
    fmt.Println("Location areas:")
    for _, area := range resp.Results {
        fmt.Printf(" - %s\n", area.Name)
    }
    cfg.nextLocationAreaURL = resp.Next
    cfg.prevLocationAreaURL = resp.Previous
    return nil
}

func callbackMapb(cfg *config, args ...string) error {
    if cfg.prevLocationAreaURL == nil {
        return errors.New("you're on the first page")
    }
    resp, err :=cfg.pokeapiClient.ListLocationAreas(cfg.prevLocationAreaURL)
    if err != nil {
        return err
    }
    fmt.Println("Location areas:")
    for _, area := range resp.Results {
        fmt.Printf(" - %s\n", area.Name)
    }
    cfg.nextLocationAreaURL = resp.Next
    cfg.prevLocationAreaURL = resp.Previous
    return nil
}