package main

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"path/filepath"
	"testing"
)

func fakeModeJev(t *testing.T, choice string, conf float64) *JevClient {
	t.Helper()
	return fakeJevFor(t, map[string]struct {
		choice string
		conf   float64
	}{"mode": {choice, conf}})
}

// fakeJevFor answers only the named question keys; any other question in the
// same request gets an empty answer (so callers fall back to headers).
func fakeJevFor(t *testing.T, answers map[string]struct {
	choice string
	conf   float64
}) *JevClient {
	t.Helper()
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		var body struct {
			Questions map[string]any `json:"questions"`
		}
		json.NewDecoder(r.Body).Decode(&body)
		out := map[string]any{}
		for q := range body.Questions {
			if a, ok := answers[q]; ok {
				out[q] = map[string]any{"type": "choice", "choice": a.choice, "confidence": a.conf,
					"probabilities": map[string]float64{a.choice: a.conf}}
			}
		}
		json.NewEncoder(w).Encode(map[string]any{"model": "jev-1.14.0", "answers": out,
			"usage": map[string]int{"input_tokens": 60, "output_tokens": 0}})
	}))
	t.Cleanup(srv.Close)
	return &JevClient{url: srv.URL, key: "tk", model: "jev-latest", threshold: 0.7, client: srv.Client()}
}

func TestModeQuestionsExist(t *testing.T) {
	m := modeQuestions["mode"].(map[string]any)
	if m["type"] != "choice" {
		t.Fatalf("mode must be a choice question, got %v", m["type"])
	}
	crit := m["criteria"].(map[string]string)
	for _, k := range []string{"solo", "conspiracy", "split", "other"} {
		if _, ok := crit[k]; !ok {
			t.Errorf("mode criteria missing %q escape/class: %v", k, crit)
		}
	}
}

func TestClassifyMode(t *testing.T) {
	dir := t.TempDir()
	flog, err := OpenFlightLog(filepath.Join(dir, "flight.jsonl"))
	if err != nil {
		t.Fatal(err)
	}
	defer flog.Close()
	f := NewFlock(MockBrain{}, DefaultGuardrails(), flog)
	f.SetClassifier(fakeModeJev(t, "conspiracy", 0.9))
	got, ok := f.ClassifyMode(context.Background(), "Should we launch a CLI or a web app first?")
	if !ok || got != "conspiracy" {
		t.Fatalf("want conspiracy ok, got %q ok=%v", got, ok)
	}
	evs, err := ReadEvents(filepath.Join(dir, "flight.jsonl"))
	if err != nil {
		t.Fatal(err)
	}
	modes := 0
	for _, e := range evs {
		if e.Kind == "mode" && e.Mode == "conspiracy" && e.Prob != nil {
			modes++
		}
	}
	if modes != 1 {
		t.Fatalf("want one logged mode verdict with probs, events: %+v", evs)
	}
}

func TestClassifyModeUnsureNotOk(t *testing.T) {
	f := NewFlock(MockBrain{}, DefaultGuardrails(), nil)
	f.SetClassifier(fakeModeJev(t, "split", 0.4))
	if got, ok := f.ClassifyMode(context.Background(), "hi"); ok || got != "" {
		t.Fatalf("below-band confidence must not be ok, got %q ok=%v", got, ok)
	}
}

func TestMessageModeFields(t *testing.T) {
	m := Message{NestID: "lab", Kind: "request", Mode: "conspiracy", Invited: 3}
	if m.Mode != "conspiracy" || m.Invited != 3 {
		t.Fatalf("Message must carry mode + invited, got %+v", m)
	}
}

func TestPostRequestJevMode(t *testing.T) {
	ts, s := newTestNestServer(t)
	s.p.Flock.SetClassifier(fakeModeJev(t, "conspiracy", 0.9))
	id := newNest(t, ts, "Lab", `"Hugin"`)
	code, req := post(t, ts.URL+"/api/nests/"+id+"/messages", `{"author":"owner","kind":"request","text":"should we launch a CLI or web app"}`)
	if code != http.StatusCreated || req["mode"] != "conspiracy" || req["mode_tagged_by"] != "jev" {
		t.Fatalf("want conspiracy/jev, got %d %v", code, req)
	}
	stored := s.msgs.All(id)[0]
	if stored.Mode != "conspiracy" || stored.ModeTagged != "jev" {
		t.Fatalf("record not persisted with mode: %+v", stored)
	}
}

func TestPostRequestModeHeaderFallback(t *testing.T) {
	ts, _ := newTestNestServer(t) // no Jev set
	id := newNest(t, ts, "Lab", `"Hugin"`)
	code, req := post(t, ts.URL+"/api/nests/"+id+"/messages", `{"author":"owner","kind":"request","mode":"split","text":"do both parts"}`)
	if code != http.StatusCreated || req["mode"] != "split" || req["mode_tagged_by"] != "header" {
		t.Fatalf("want split/header, got %d %v", code, req)
	}
}

func TestSayHasNoMode(t *testing.T) {
	ts, s := newTestNestServer(t)
	s.p.Flock.SetClassifier(fakeModeJev(t, "conspiracy", 0.9))
	id := newNest(t, ts, "Lab", `"Hugin"`)
	code, say := post(t, ts.URL+"/api/nests/"+id+"/messages", `{"author":"owner","kind":"say","text":"nice weather"}`)
	if code != http.StatusCreated {
		t.Fatalf("say: %d", code)
	}
	if _, ok := say["mode"]; ok {
		t.Fatalf("a say must not carry a mode: %v", say)
	}
}