package test

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"

	"ascii-live/handlers"

	"github.com/gorilla/mux"
)

func TestListHandler(t *testing.T) {
	r := mux.NewRouter()
	r.HandleFunc("/ascii-live/list", handlers.ListHandler)

	req, err := http.NewRequest("GET", "/ascii-live/list", nil)
	if err != nil {
		t.Fatal(err)
	}

	recorder := httptest.NewRecorder()
	r.ServeHTTP(recorder, req)

	if status := recorder.Code; status != http.StatusOK {
		t.Errorf("handler returned wrong status code: got %v want %v", status, http.StatusOK)
	}

	var response map[string][]string
	if err := json.Unmarshal(recorder.Body.Bytes(), &response); err != nil {
		t.Errorf("error decoding response: %v", err)
	}
}

func TestNotFoundHandler(t *testing.T) {
	r := mux.NewRouter()
	r.NotFoundHandler = http.HandlerFunc(handlers.NotFoundHandler)

	req, err := http.NewRequest("GET", "/not-existing", nil)
	if err != nil {
		t.Fatal(err)
	}

	recorder := httptest.NewRecorder()
	r.ServeHTTP(recorder, req) // Router verarbeitet die Anfrage

	if status := recorder.Code; status != http.StatusNotFound {
		t.Errorf("handler returned wrong status code: got %v want %v", status, http.StatusNotFound)
	}
}

func TestNotCurledHandler(t *testing.T) {
	r := mux.NewRouter()
	r.HandleFunc("/ascii-live/donut", handlers.ListHandler)

	req, err := http.NewRequest("GET", "/ascii-live/donut", nil)
	if err != nil {
		t.Fatal(err)
	}

	recorder := httptest.NewRecorder()
	r.ServeHTTP(recorder, req)

	if status := recorder.Code; status != http.StatusExpectationFailed {
		t.Errorf("handler returned wrong status code: got %v want %v", status, http.StatusExpectationFailed)
	}

	var response map[string]string
	if err := json.Unmarshal(recorder.Body.Bytes(), &response); err != nil {
		t.Errorf("error decoding response: %v", err)
	}
}

func TestWriteJson(t *testing.T) {
	recorder := httptest.NewRecorder()
	// req, _ := http.NewRequest("GET", "/", nil)

	//testData := map[string]string{"message": "hello"}
	// writeJson(recorder, req, testData, http.StatusOK)

	if status := recorder.Code; status != http.StatusOK {
		t.Errorf("writeJson returned wrong status code: got %v want %v", status, http.StatusOK)
	}

	var response map[string]string
	if err := json.Unmarshal(recorder.Body.Bytes(), &response); err != nil {
		t.Errorf("error decoding response: %v", err)
	}

	if response["message"] != "hello" {
		t.Errorf("writeJson returned unexpected body: got %v want %v", response["message"], "hello")
	}
}