#include <WiFi.h>
#include <HTTPClient.h>

// WiFi 設定
//const char *ssid = "Facon";
//const char *pswd = "84488125";
const char *ssid = "Wokwi-GUEST";
const char *pswd = "";

// REST API Server 設定
String serverAddress = "https://petstore.swagger.io/v2/pet/";

void setup() {
  // 連接 WiFi
  WiFi.begin(ssid, pswd);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("WiFi connected!");

  // 初始化序列埠
  Serial.begin(115200);
}

String input_str;

void loop() {
  Serial.println("----------------------------------------");
  Serial.println("輸入模式:1.GET 2.POST 3.DELETE");

  while (!Serial.available()) {} //等待串列輸入資料才繼續往下

  if (Serial.available()) { // 檢查串列埠上是否有可用的資料
    //這是字串接收的格式
    int mode_select = Serial.readString().toInt(); // 讀取接收到的資料
    String input_str;//輸入ID用
    String input_str1;//POST模式輸入Name用

    switch (mode_select) {
      case 1:
        Serial.println("請輸入GET ID");
        while (!Serial.available()) {} //如未輸入時停留在此等待輸入
        input_str = Serial.readString();//輸入的文字因為會帶有換行
        input_str.trim();//這行用意為清除換行
        Serial.println("GET ID=" + input_str);
        REST_API_GET(input_str);
        break;
      case 2:
        Serial.println("請輸入POST ID");
        while (!Serial.available()) {} //如未輸入時停留在此等待輸入
        input_str = Serial.readString();//輸入的文字因為會帶有換行
        input_str.trim();//這行用意為清除換行

        Serial.println("請輸入POST Name");
        while (!Serial.available()) {} //如未輸入時停留在此等待輸入
        input_str1 = Serial.readString();//輸入的文字因為會帶有換行
        input_str1.trim();//這行用意為清除換行

        Serial.println("POST ID=" + input_str);
        Serial.println("POST Name=" + input_str1);
        
        REST_API_POST(input_str,input_str1);
        break;
      case 3:
        Serial.println("請輸入DELETE ID");
        while (!Serial.available()) {} //如未輸入時停留在此等待輸入
        input_str = Serial.readString();//輸入的文字因為會帶有換行
        input_str.trim();//這行用意為清除換行
        Serial.println("DELETE ID=" + input_str);
        REST_API_DELETE(input_str);
        break;
      case 4:
        Serial.println("號碼錯誤");
        break;
      default:
        Serial.println("號碼錯誤");
        break;
    }
  }

}


void REST_API_GET(String GET_ID) {
  // 設定 HTTPClient
  HTTPClient http;

  // 發送 GET 請求
  String getRequestURL = serverAddress + GET_ID;
  http.begin(getRequestURL);
  int getHttpResponseCode = http.GET();

  // 處理 GET 回應
  if (getHttpResponseCode > 0) {
    Serial.print("HTTP Response code: ");
    Serial.println(getHttpResponseCode);

    String getResponsePayload = http.getString();
    Serial.println("GET Response: " + getResponsePayload);
  } else {
    Serial.println("Error getting response");
  }

  // 釋放 HTTP 連線資源
  http.end();
}


void REST_API_POST(String POST_ID,String POST_Name) {
  // 設定 HTTPClient
  HTTPClient http;

  // 發送 POST 請求
  String postRequestURL = serverAddress;
  http.begin(postRequestURL);
  http.addHeader("Content-Type", "application/json");
  String postRequestBody = "{\"id\": " + POST_ID + "," +"\"name\": " + "\"" + POST_Name + "\"" + "}";//特殊符號前要加\，實際string內容為{"id": 9999,"name": "doggie"}
  //Serial.println(postRequestBody);//列出POST出的網頁碼
  int postHttpResponseCode = http.POST(postRequestBody);

  // 處理 POST 回應
  if (postHttpResponseCode > 0) {
    Serial.print("HTTP Response code: ");
    Serial.println(postHttpResponseCode);

    String postResponsePayload = http.getString();
    Serial.println("POST Response: " + postResponsePayload);
  } else {
    Serial.println("Error getting response");
  }

  // 釋放 HTTP 連線資源
  http.end();
}


void REST_API_DELETE(String DELETE_ID) {
  // 設定 HTTPClient
  HTTPClient http;

  String DELETERequestURL = serverAddress + DELETE_ID;
  http.begin(DELETERequestURL);
  http.addHeader("Content-Type", "application/json");
  int httpResponseCode = http.sendRequest("DELETE");
  Serial.print("HTTP Response code: ");
  Serial.println(httpResponseCode);

  // 釋放 HTTP 連線資源
  http.end();
}