133 lines
2.5 KiB
Go
133 lines
2.5 KiB
Go
package main
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import (
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"bufio"
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"errors"
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"fmt"
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"github.com/rdarius/boot-dev-pokedex/pokeapi"
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"os"
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"strings"
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"time"
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)
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type config struct {
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pokeapiClient pokeapi.Client
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nextLocationsURL *string
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prevLocationsURL *string
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}
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type cliCommand struct {
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name string
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description string
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callback func(*config) error
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}
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var commands map[string]cliCommand
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func main() {
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pokeClient := pokeapi.NewClient(5*time.Second, time.Minute*5)
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cfg := &config{
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pokeapiClient: pokeClient,
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}
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commands = map[string]cliCommand{
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"exit": {
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name: "exit",
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description: "Exit the Pokedex",
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callback: commandExit,
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},
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"help": {
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name: "help",
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description: "Display a help message",
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callback: printHelpMessage,
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},
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"map": {
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name: "map",
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description: "Get the next page of locations",
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callback: commandMapf,
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},
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"mapb": {
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name: "mapb",
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description: "Get the previous page of locations",
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callback: commandMapb,
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},
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}
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for {
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// read user input
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input := bufio.NewScanner(os.Stdin)
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fmt.Print("Pokedex > ")
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for input.Scan() {
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word := input.Text()
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cleanedWord := cleanInput(word)
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command := cleanedWord[0]
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//check if command is in commands map
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cmd, ok := commands[command]
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if ok {
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err := cmd.callback(cfg)
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if err != nil {
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fmt.Println(err)
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}
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} else {
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fmt.Println("Unknown command")
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}
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fmt.Print("Pokedex > ")
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}
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}
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}
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func commandExit(*config) error {
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fmt.Println("Closing the Pokedex... Goodbye!")
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os.Exit(0)
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return nil
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}
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func cleanInput(text string) []string {
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output := strings.ToLower(text)
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words := strings.Fields(output)
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return words
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}
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func printHelpMessage(*config) error {
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fmt.Print("Welcome to the Pokedex!\nUsage:\n\n")
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for _, v := range commands {
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fmt.Printf("%s: %s\n", v.name, v.description)
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}
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return nil
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}
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func commandMapf(cfg *config) error {
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locationsResp, err := cfg.pokeapiClient.ListLocations(cfg.nextLocationsURL)
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if err != nil {
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return err
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}
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cfg.nextLocationsURL = locationsResp.Next
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cfg.prevLocationsURL = locationsResp.Previous
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for _, loc := range locationsResp.Results {
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fmt.Println(loc.Name)
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}
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return nil
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}
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func commandMapb(cfg *config) error {
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if cfg.prevLocationsURL == nil {
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return errors.New("you're on the first page")
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}
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locationResp, err := cfg.pokeapiClient.ListLocations(cfg.prevLocationsURL)
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if err != nil {
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return err
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}
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cfg.nextLocationsURL = locationResp.Next
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cfg.prevLocationsURL = locationResp.Previous
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for _, loc := range locationResp.Results {
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fmt.Println(loc.Name)
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}
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return nil
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}
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