package web

import (
	"net/http"
	"net/http/httptest"
	"net/url"
	"strings"
	"testing"
)

func TestCreateAndDeleteCalendarViaWebUI(t *testing.T) {
	s := newTestServer(t)
	handler := s.Handler(emptyStaticFS{})
	cookie := loginAs(t, handler, "alice", "password")

	// Create a new calendar.
	form := url.Values{"name": {"vacation"}}
	req := httptest.NewRequest(http.MethodPost, "/resources/calendar", strings.NewReader(form.Encode()))
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.AddCookie(cookie)
	rr := httptest.NewRecorder()
	handler.ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("create: expected 200, got %d: %s", rr.Code, rr.Body.String())
	}
	if !strings.Contains(rr.Body.String(), "vacation") {
		t.Fatalf("expected resource list to include new calendar, got: %s", rr.Body.String())
	}

	names, err := s.dbase.ListCalendars("alice")
	if err != nil {
		t.Fatalf("ListCalendars: %v", err)
	}
	found := false
	for _, n := range names {
		if n == "vacation" {
			found = true
		}
	}
	if !found {
		t.Fatalf("expected vacation calendar to be registered, got %v", names)
	}

	// Duplicate creation should fail with 409.
	req = httptest.NewRequest(http.MethodPost, "/resources/calendar", strings.NewReader(form.Encode()))
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.AddCookie(cookie)
	rr = httptest.NewRecorder()
	handler.ServeHTTP(rr, req)
	if rr.Code != http.StatusConflict {
		t.Fatalf("expected 409 on duplicate create, got %d", rr.Code)
	}

	// Delete it — htmx v2 sends DELETE params as a URL query string.
	req = httptest.NewRequest(http.MethodDelete, "/resources/calendar?name=vacation", nil)
	req.AddCookie(cookie)
	rr = httptest.NewRecorder()
	handler.ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("delete: expected 200, got %d: %s", rr.Code, rr.Body.String())
	}
	if strings.Contains(rr.Body.String(), "vacation") {
		t.Fatalf("expected resource list to no longer include deleted calendar, got: %s", rr.Body.String())
	}

	names, err = s.dbase.ListCalendars("alice")
	if err != nil {
		t.Fatalf("ListCalendars: %v", err)
	}
	for _, n := range names {
		if n == "vacation" {
			t.Fatalf("expected vacation calendar to be gone, got %v", names)
		}
	}
}

func TestCreateAddressBookInvalidName(t *testing.T) {
	s := newTestServer(t)
	handler := s.Handler(emptyStaticFS{})
	cookie := loginAs(t, handler, "alice", "password")

	form := url.Values{"name": {"has a space"}}
	req := httptest.NewRequest(http.MethodPost, "/resources/addressbook", strings.NewReader(form.Encode()))
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.AddCookie(cookie)
	rr := httptest.NewRecorder()
	handler.ServeHTTP(rr, req)
	if rr.Code != http.StatusBadRequest {
		t.Fatalf("expected 400 for invalid name, got %d", rr.Code)
	}
}

func TestDeleteCalendarRequiresLogin(t *testing.T) {
	s := newTestServer(t)
	handler := s.Handler(emptyStaticFS{})

	req := httptest.NewRequest(http.MethodDelete, "/resources/calendar?name=work", nil)
	rr := httptest.NewRecorder()
	handler.ServeHTTP(rr, req)
	if rr.Code != http.StatusSeeOther {
		t.Fatalf("expected redirect to login, got %d", rr.Code)
	}
}