package httpapi

import (
	"net/http"
	"net/http/httptest"
	"path/filepath"
	"strings"
	"testing"

	"webui4frpc/internal/store"
)

// newAuditHarness builds a Handler + mux with a temp store, mirroring
// TestSaveCanvasPublishesRevokeTask's setup minus the ring.
func newAuditHarness(t *testing.T) (*Handler, http.Handler) {
	t.Helper()
	dir := t.TempDir()
	st, err := store.New(filepath.Join(dir, "test.db"))
	if err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() { st.Close() })
	if _, err := st.CreateUser("auditor", "pw-auditor", "viewer"); err != nil {
		t.Fatal(err)
	}
	if _, _, err := st.CreateApiKey(1, "ci-key", "read"); err != nil {
		t.Fatal(err)
	}
	h := &Handler{Store: st, WorkDir: dir, User: "admin", Password: "pw"}
	mux, err := NewServeMux(h)
	if err != nil {
		t.Fatal(err)
	}
	return h, mux
}

func TestCsvEscape(t *testing.T) {
	cases := []struct{ in, want string }{
		{"plain", "plain"},
		{"", ""},
		{"a,b", `"a,b"`},
		{`say "hi"`, `"say ""hi"""`},
		{"line\nbreak", "\"line\nbreak\""},
		{"=cmd()", "'=cmd()"},     // formula injection defused
		{"+1+1", "'+1+1"},         // formula injection defused
		{"@SUM(A1)", "'@SUM(A1)"}, // formula injection defused
		{"-2+3", "'-2+3"},         // formula injection defused
	}
	for _, c := range cases {
		if got := csvEscape(c.in); got != c.want {
			t.Errorf("csvEscape(%q)=%q want %q", c.in, got, c.want)
		}
	}
}

func TestIsoTimeEmpty(t *testing.T) {
	if got := isoTime(0); got != "" {
		t.Errorf("isoTime(0)=%q want empty", got)
	}
}

func TestAuditUsersCsv(t *testing.T) {
	_, mux := newAuditHarness(t)
	req := httptest.NewRequest(http.MethodGet, "/api/manager/audit/users.csv", nil)
	req.SetBasicAuth("admin", "pw")
	rec := httptest.NewRecorder()
	mux.ServeHTTP(rec, req)
	if rec.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
	}
	body := rec.Body.String()
	for _, want := range []string{"id,username,role,enabled,system,created_at,last_login_at", "auditor,viewer"} {
		if !strings.Contains(body, want) {
			t.Errorf("CSV missing %q:\n%s", want, body)
		}
	}
	if ct := rec.Header().Get("Content-Type"); !strings.HasPrefix(ct, "text/csv") {
		t.Errorf("content-type=%q", ct)
	}
}

func TestAuditApiKeysCsv(t *testing.T) {
	_, mux := newAuditHarness(t)
	req := httptest.NewRequest(http.MethodGet, "/api/manager/audit/apikeys.csv", nil)
	req.SetBasicAuth("admin", "pw")
	rec := httptest.NewRecorder()
	mux.ServeHTTP(rec, req)
	if rec.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
	}
	body := rec.Body.String()
	if !strings.Contains(body, "key_prefix,owner,label,scope") {
		t.Errorf("CSV header missing:\n%s", body)
	}
	if !strings.Contains(body, "w4f_") || !strings.Contains(body, "ci-key") {
		t.Errorf("key row missing:\n%s", body)
	}
}

func TestAuditEndpointsNeedAuth(t *testing.T) {
	_, mux := newAuditHarness(t)
	for _, path := range []string{"/api/manager/audit/users.csv", "/api/manager/audit/apikeys.csv"} {
		req := httptest.NewRequest(http.MethodGet, path, nil)
		rec := httptest.NewRecorder()
		mux.ServeHTTP(rec, req)
		if rec.Code != http.StatusUnauthorized {
			t.Errorf("%s without auth: status=%d want 401", path, rec.Code)
		}
	}
}