package main

import (
	"context"
	"os"
	"path/filepath"
	"testing"

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

// TestTopicFloorAnswersWithoutSeeds — a handler with no embedder never loads the
// seeds, and every topic source has to keep working. This is the case that used
// to be the only one, so a regression here is the three recognisers going
// silent on a box with no embedder at all.
func TestTopicFloorAnswersWithoutSeeds(t *testing.T) {
	h := &reactiveHandler{}
	for _, tc := range []struct {
		utterance string
		label     topicLabel
		floor     func(string) bool
		want      bool
	}{
		{"какая сегодня погода", topicWeather, isWeatherQuery, true},
		{"что включено в доме?", topicHome, isHomeQuery, true},
		{"какие устройства в сети?", topicNetwork, isNetworkQuery, true},
		{"почему небо синее", topicWeather, isWeatherQuery, false},
		{"я дома", topicHome, isHomeQuery, false},
		{"интернет не работает", topicNetwork, isNetworkQuery, false},
	} {
		turn := &queryTurn{dec: router.Decision{Utterance: tc.utterance}}
		if got := h.turnIsAbout(context.Background(), turn, tc.label, tc.floor); got != tc.want {
			t.Errorf("turnIsAbout(%q, %s) = %v, want %v", tc.utterance, tc.label, got, tc.want)
		}
	}
}

// TestONNXTopics — the number that matters, scored against the embedder homesrv
// actually runs. Opt-in via MAVEN_ONNX_LIB, like TestONNXPersonalBoundary.
//
// Every case is held out: none of these strings is a seed. It asserts what the
// gate does, not what the raw scorer says — a label under topicMargin is not a
// claim, and one held-out case turns on exactly that.
//
// The first three rows are the collisions the old regexes needed hand-written
// bail-outs for: the temperature pair that made isHomeQuery exclude weather
// words, and the
// "посетил" substring that made isNetworkQuery match "сети" as a whole token.
func TestONNXTopics(t *testing.T) {
	lib := os.Getenv("MAVEN_ONNX_LIB")
	if lib == "" {
		t.Skip("MAVEN_ONNX_LIB unset — see AGENTS.md § Embedder model for intent routing")
	}
	dir := filepath.Join("../..", "models/embedder/multilingual-e5-small")
	emb, err := router.NewONNXEmbedder(filepath.Join(dir, "model_quantized.onnx"), filepath.Join(dir, "tokenizer.json"), lib)
	if err != nil {
		t.Skipf("onnx embedder unavailable: %v", err)
	}
	defer emb.Close()

	cases := []struct {
		utterance string
		want      topicLabel
	}{
		{"какая температура на улице?", topicWeather},
		{"какая температура в доме?", topicHome},
		{"сколько машин я посетил?", topicOther},
		{"сколько сейчас градусов", topicWeather},
		{"дождь будет вечером?", topicWeather},
		{"тепло сегодня на улице?", topicWeather},
		{"свет на кухне включен?", topicHome},
		{"что сейчас включено дома", topicHome},
		{"датчики в квартире что показывают", topicHome},
		{"просканируй сеть", topicNetwork},
		{"сколько устройств в локальной сети", topicNetwork},
		{"кто сейчас в сетке", topicNetwork},
		// The case the margin exists for. It reads as network by 0.0055, under
		// topicMargin, so the gate passes it on — which is right: it is a
		// complaint, and a scan she runs unasked is the behaviour the bounds
		// prevent.
		{"вайфай опять отвалился", topicOther},
		{"я уже приехал домой", topicOther},
		{"что я говорил про погоду в москве", topicOther},
		{"напомни полить цветы", topicOther},
	}

	h := &reactiveHandler{embedder: emb}
	ctx := context.Background()
	h.topics.load(ctx, emb)
	if !h.topics.loaded {
		t.Fatal("topic seeds did not load")
	}
	right := 0
	for _, tc := range cases {
		vec, err := router.EmbedQuery(ctx, emb, tc.utterance)
		if err != nil {
			t.Fatalf("embed %q: %v", tc.utterance, err)
		}
		label, margin, ok := h.topics.best(vec)
		if !ok {
			t.Fatalf("best(%q) not ok", tc.utterance)
		}
		// What the gate would do, which is the thing under test: a label that
		// does not clear the margin is not a claim.
		got := label
		if margin < topicMargin {
			got = topicOther
		}
		if got == tc.want {
			right++
		} else {
			t.Errorf("%q: %s by %.4f, want %s", tc.utterance, label, margin, tc.want)
		}
		t.Logf("  %-40s -> %-8s margin %.4f", tc.utterance, label, margin)
	}
	t.Logf("topics: %d/%d", right, len(cases))
}