package main

import (
	"context"
	"testing"
	"time"

	"github.com/kami/maven/internal/llm"
	"github.com/kami/maven/internal/router"
)

// The chat path must answer when llama-server is down (Vikunja #45 step 4).
// Both halves of a turn call the model — the router and the replier — and each
// has its own floor: the cascade falls to the classifier, the replier falls to
// the stub. This wires a client at a closed port so both floors are exercised
// by a dial error rather than by a stubbed error value.
func TestChatAnswersWithNoLlamaServer(t *testing.T) {
	h, _, _ := newClarifyHandler(t)
	dead := llm.New("http://127.0.0.1:1", 500*time.Millisecond)
	emb := router.NewHashEmbedder(1024)
	h.recall.embedder = emb
	h.router = buildRouter(emb, h.matcher, 0.55, pickLLMRouter(true, dead), nil)
	h.replier = newLLMReplier(dead, nil)

	ctx := withDialogueID(context.Background(), dialogueIDFor(sourceText, "web"))
	for _, utt := range []string{
		"привет",
		"запиши что кофе закончился",
		"что у меня сегодня",
	} {
		reply := h.handleText(ctx, "web", utt)
		if reply == "" {
			t.Errorf("%q answered with nothing; a dead model must degrade to the stub", utt)
		}
	}
}

// daemonAPI.Chat reports an error only when the voice path was never wired.
// A turn that reaches handleText always carries text, which is what keeps
// mavweb's /api/chat off its error branch when the model is down.
func TestChatAPIErrsOnlyWhenUnwired(t *testing.T) {
	d := &daemonAPI{}
	if _, err := d.Chat(context.Background(), "web", "привет"); err == nil {
		t.Fatal("an unwired daemon must say so")
	}
	d.chatFn = func(context.Context, string, string) string { return "" }
	if _, err := d.Chat(context.Background(), "web", "привет"); err != nil {
		t.Fatalf("a wired daemon must not error: %v", err)
	}
}