package webui

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

func TestRootRendersLatestSnapshot(t *testing.T) {
	dir := t.TempDir()
	path := filepath.Join(dir, "audit.json")
	exportDir := filepath.Join(dir, "export")
	if err := os.MkdirAll(exportDir, 0755); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(path, []byte(`{"collected_at":"2026-03-15T00:00:00Z","hardware":{"board":{"serial_number":"SERIAL-OLD"}}}`), 0644); err != nil {
		t.Fatal(err)
	}

	handler := NewHandler(HandlerOptions{
		Title:     "Bee Hardware Audit",
		AuditPath: path,
		ExportDir: exportDir,
	})

	first := httptest.NewRecorder()
	handler.ServeHTTP(first, httptest.NewRequest(http.MethodGet, "/", nil))
	if first.Code != http.StatusOK {
		t.Fatalf("first status=%d", first.Code)
	}
	if !strings.Contains(first.Body.String(), "SERIAL-OLD") {
		t.Fatalf("first body missing old serial: %s", first.Body.String())
	}
	if !strings.Contains(first.Body.String(), "/export/support.tar.gz") {
		t.Fatalf("first body missing support bundle link: %s", first.Body.String())
	}
	if got := first.Header().Get("Cache-Control"); got != "no-store" {
		t.Fatalf("first cache-control=%q", got)
	}

	if err := os.WriteFile(path, []byte(`{"collected_at":"2026-03-15T00:05:00Z","hardware":{"board":{"serial_number":"SERIAL-NEW"}}}`), 0644); err != nil {
		t.Fatal(err)
	}

	second := httptest.NewRecorder()
	handler.ServeHTTP(second, httptest.NewRequest(http.MethodGet, "/", nil))
	if second.Code != http.StatusOK {
		t.Fatalf("second status=%d", second.Code)
	}
	if !strings.Contains(second.Body.String(), "SERIAL-NEW") {
		t.Fatalf("second body missing new serial: %s", second.Body.String())
	}
	if strings.Contains(second.Body.String(), "SERIAL-OLD") {
		t.Fatalf("second body still contains old serial: %s", second.Body.String())
	}
}

func TestAuditJSONServesLatestSnapshot(t *testing.T) {
	dir := t.TempDir()
	path := filepath.Join(dir, "audit.json")
	body := `{"hardware":{"board":{"serial_number":"SERIAL-API"}}}`
	if err := os.WriteFile(path, []byte(body), 0644); err != nil {
		t.Fatal(err)
	}

	handler := NewHandler(HandlerOptions{AuditPath: path})
	rec := httptest.NewRecorder()
	handler.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, "/audit.json", nil))
	if rec.Code != http.StatusOK {
		t.Fatalf("status=%d", rec.Code)
	}
	if got := strings.TrimSpace(rec.Body.String()); got != body {
		t.Fatalf("body=%q want %q", got, body)
	}
	if got := rec.Header().Get("Content-Type"); !strings.Contains(got, "application/json") {
		t.Fatalf("content-type=%q", got)
	}
}

func TestMissingAuditJSONReturnsNotFound(t *testing.T) {
	handler := NewHandler(HandlerOptions{AuditPath: "/missing/audit.json"})
	rec := httptest.NewRecorder()
	handler.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, "/audit.json", nil))
	if rec.Code != http.StatusNotFound {
		t.Fatalf("status=%d want %d", rec.Code, http.StatusNotFound)
	}
}

func TestSupportBundleEndpointReturnsArchive(t *testing.T) {
	dir := t.TempDir()
	exportDir := filepath.Join(dir, "export")
	if err := os.MkdirAll(exportDir, 0755); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(filepath.Join(exportDir, "bee-audit.log"), []byte("audit log"), 0644); err != nil {
		t.Fatal(err)
	}

	handler := NewHandler(HandlerOptions{ExportDir: exportDir})
	rec := httptest.NewRecorder()
	handler.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, "/export/support.tar.gz", nil))
	if rec.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
	}
	if got := rec.Header().Get("Content-Disposition"); !strings.Contains(got, "attachment;") {
		t.Fatalf("content-disposition=%q", got)
	}
	if rec.Body.Len() == 0 {
		t.Fatal("empty archive body")
	}
}

func TestRuntimeHealthEndpointReturnsJSON(t *testing.T) {
	dir := t.TempDir()
	exportDir := filepath.Join(dir, "export")
	if err := os.MkdirAll(exportDir, 0755); err != nil {
		t.Fatal(err)
	}
	body := `{"status":"PARTIAL","checked_at":"2026-03-16T10:00:00Z"}`
	if err := os.WriteFile(filepath.Join(exportDir, "runtime-health.json"), []byte(body), 0644); err != nil {
		t.Fatal(err)
	}

	handler := NewHandler(HandlerOptions{ExportDir: exportDir})
	rec := httptest.NewRecorder()
	handler.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, "/runtime-health.json", nil))
	if rec.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
	}
	if strings.TrimSpace(rec.Body.String()) != body {
		t.Fatalf("body=%q want %q", strings.TrimSpace(rec.Body.String()), body)
	}
}