package api

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

	"github.com/go-chi/chi/v5"
	"github.com/will/k8s-agent-dashboard/internal/claude"
)

type fakeClaudeDirLoader struct{ dir string }

func (f fakeClaudeDirLoader) ClaudeDir() string { return f.dir }
func (f fakeClaudeDirLoader) LoadStatsCache() (*claude.StatsCache, error) {
	return &claude.StatsCache{}, nil
}
func (f fakeClaudeDirLoader) ListDir(name string) ([]claude.DirEntry, error) { return nil, nil }
func (f fakeClaudeDirLoader) FileMeta(relPath string) (claude.FileMeta, error) {
	return claude.FileMeta{}, nil
}
func (f fakeClaudeDirLoader) PathExists(relPath string) bool { return true }

func TestClaudeLiveBacklog_DefaultLimit(t *testing.T) {
	dir := t.TempDir()
	p := filepath.Join(dir, "history.jsonl")
	if err := os.WriteFile(p, []byte("{\"display\":\"/model\"}\n"), 0o600); err != nil {
		t.Fatalf("write: %v", err)
	}

	loader := fakeClaudeDirLoader{dir: dir}

	r := chi.NewRouter()
	r.Get("/api/claude/live/backlog", GetClaudeLiveBacklog(loader))

	req := httptest.NewRequest(http.MethodGet, "/api/claude/live/backlog", nil)
	w := httptest.NewRecorder()
	r.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", w.Code, w.Body.String())
	}
	if !jsonContainsKey(w.Body.String(), "events") {
		t.Fatalf("expected events in response: %s", w.Body.String())
	}
}