package main

import (
    "fmt"
    "net/http"
    "strings"

    "golang.org/x/net/html"
)

func main() {
    //.. HTTP request

    // Create an HTML tokenizer
    z := html.NewTokenizer(resp.Body)

    // Loop through HTML tokens
    for {
        tokenType := z.Next()

        switch tokenType {
        case html.StartTagToken, html.SelfClosingTagToken:
            token := z.Token()

            // Check for all <li> element
            if token.Data == "li" {
                // Process the details of the Pokémon within this <li> element
                processPokemonDetails(z)

                // Exit the loop after processing the details
                //return
            }
        }

        if tokenType == html.ErrorToken {
            break
        }
    }
}

func processPokemonDetails(z *html.Tokenizer) {
    // parse Tokens for Relevant Data within the <li> element
    for {
        tokenType := z.Next()

        switch tokenType {
        case html.StartTagToken, html.SelfClosingTagToken:
            token := z.Token()

            // parse Tokens for Relevant Data
            switch token.Data {
            case "h2":
                // Extracting Pokémon name
                tokenType = z.Next()
                if tokenType == html.TextToken {
                    name := z.Token().Data
                    fmt.Println("Name:", name)
                }

            case "span":
                // check for the span with class "price"
                hasPriceClass := false
                for _, attr := range token.Attr {
                    if attr.Key == "class" && strings.Contains(attr.Val, "price") {
                        hasPriceClass = true
                        break
                    }
                }

                // ...

                if hasPriceClass {
                    tokenType = z.Next()

                    // check if the next token is a span with class "amount"
                    if tokenType == html.StartTagToken || tokenType == html.SelfClosingTagToken {
                        nextToken := z.Token()
                        if nextToken.Data == "span" {
                            amountClass := false
                            for _, attr := range nextToken.Attr {
                                if attr.Key == "class" && strings.Contains(attr.Val, "amount") {
                                    amountClass = true
                                    break
                                }
                            }

                            // if the next span has class "amount," loop through and print its text content
                            if amountClass {
                                var currencySymbol, priceValue string

                                for {
                                    tokenType = z.Next()
                                    if tokenType == html.TextToken {
                                        currencySymbol = z.Token().Data
                                    }

                                    tokenType = z.Next()
                                    if tokenType == html.TextToken {
                                        priceValue = z.Token().Data
                                    } else if tokenType == html.EndTagToken && z.Token().Data == "span" {
                                        break
                                    }
                                }

                                amount := currencySymbol + priceValue
                                fmt.Println("Price:", amount)
                            }
                        }
                    }
                }

            case "img":
                // check for the src attribute and retrieve its value
                for _, attr := range token.Attr {
                    if attr.Key == "src" {
                        imageURL := attr.Val
                        fmt.Println("Image URL:", imageURL)
                    }
                }
            }
        }
        if tokenType == html.ErrorToken {
            break
        }
    }
}