package handlers

import (
	"bytes"
	"log/slog"
	"net/http"
	"net/http/httptest"
	"net/url"
	"strings"
	"testing"

	"sneak.berlin/go/pixa/internal/config"
	"sneak.berlin/go/pixa/internal/session"
)

// TestLoginLogLeavesOutSubmittedKey verifies that the log lines for a
// failed and for a successful login do not contain the submitted key.
func TestLoginLogLeavesOutSubmittedKey(t *testing.T) {
	t.Parallel()

	const wrongKey = "wrong-signing-key-fedcba9876543210"

	var buf bytes.Buffer

	sessMgr, err := session.NewManager(testSigningKey)
	if err != nil {
		t.Fatalf("session.NewManager() error = %v", err)
	}

	h := &Handlers{
		log:     slog.New(slog.NewJSONHandler(&buf, nil)),
		config:  &config.Config{SigningKey: testSigningKey},
		sessMgr: sessMgr,
	}

	submittedKeys := []string{wrongKey, testSigningKey}

	for _, key := range submittedKeys {
		form := url.Values{loginKeyField: {key}}
		req := httptest.NewRequestWithContext(
			t.Context(), http.MethodPost, "/",
			strings.NewReader(form.Encode()))
		req.Header.Set("Content-Type", "application/x-www-form-urlencoded")

		h.handleLoginPost(httptest.NewRecorder(), req)
	}

	for _, msg := range []string{"failed login attempt", "successful login"} {
		if !strings.Contains(buf.String(), msg) {
			t.Fatalf("log missing %q; got %q", msg, buf.String())
		}
	}

	for _, key := range submittedKeys {
		if strings.Contains(buf.String(), key) {
			t.Errorf("log contains submitted key %q; got %q", key, buf.String())
		}
	}
}