package main

import (
	"context"
	"net/http"
	"net/http/httptest"
	"strings"
	"sync"
	"testing"
)

type quillBrain struct {
	mu    sync.Mutex
	pairs [][2]string
	reply string
}

func (b *quillBrain) Name() string { return "quill-rec" }
func (b *quillBrain) Ask(ctx context.Context, system, prompt string) (string, int, error) {
	b.mu.Lock()
	b.pairs = append(b.pairs, [2]string{system, prompt})
	b.mu.Unlock()
	return b.reply, 10, nil
}

func newQuillServer(t *testing.T, reply string) (*httptest.Server, *Server, *quillBrain) {
	t.Helper()
	ts, s := newTestNestServer(t)
	qb := &quillBrain{reply: reply}
	s.p.Flock.brain = qb
	return ts, s, qb
}

func TestQuillIsServiceRole(t *testing.T) {
	ts, _, _ := newQuillServer(t, "hello back")
	id := newNest(t, ts, "Lab", `"Hugin","Munin"`)
	code, msg := post(t, ts.URL+"/api/nests/"+id+"/messages",
		`{"author":"owner","to":"Quill","kind":"say","text":"hello"}`)
	if code != http.StatusCreated {
		t.Fatalf("Quill must be addressable like Elder: got %d %v", code, msg)
	}
}

func TestQuillAnswersInCharacter(t *testing.T) {
	ts, _, qb := newQuillServer(t, "Already on it, boss.")
	id := newNest(t, ts, "Lab", `"Hugin","Munin"`)
	code, _ := post(t, ts.URL+"/api/nests/"+id+"/messages",
		`{"author":"owner","to":"Quill","kind":"request","text":"quiet the room"}`)
	if code != http.StatusCreated {
		t.Fatalf("post: %d", code)
	}
	msgs := awaitMessages(t, ts, id, 2)
	var reply map[string]any
	for _, m := range msgs {
		if m["author"] == "Quill" {
			reply = m
		}
	}
	if reply == nil {
		t.Fatalf("Quill never answered: %v", msgs)
	}
	if reply["kind"] != "deliver" || reply["to"] != "owner" {
		t.Fatalf("want deliver to owner, got %v", reply)
	}
	if reply["text"] != "Already on it, boss." {
		t.Fatalf("reply text: %v", reply["text"])
	}
	qb.mu.Lock()
	defer qb.mu.Unlock()
	if len(qb.pairs) != 1 {
		t.Fatalf("want exactly one model call, got %d", len(qb.pairs))
	}
	if !strings.Contains(qb.pairs[0][0], "Quill") || !strings.Contains(qb.pairs[0][0], "The Hand") {
		t.Fatalf("system prompt must carry the Quill persona: %q", qb.pairs[0][0])
	}
	if !strings.Contains(qb.pairs[0][1], "quiet the room") {
		t.Fatalf("prompt must carry the request text: %q", qb.pairs[0][1])
	}
}

func TestQuillNotInNestCrows(t *testing.T) {
	ts, s, _ := newQuillServer(t, "noted")
	id := newNest(t, ts, "Lab", `"Hugin"`)
	post(t, ts.URL+"/api/nests/"+id+"/messages",
		`{"author":"owner","to":"Quill","kind":"request","text":"status?"}`)
	awaitMessages(t, ts, id, 2)
	for _, c := range nestOf(s, id).Crows {
		if c == "Quill" {
			t.Fatal("Quill must never become a nest member")
		}
	}
	// No trust promotion happened for Quill either: service roles act on
	// address, not on trust (the test server ledger was never touched).
	if _, ok := s.p.Ledger.Crows["Quill|other"]; ok {
		t.Fatal("Quill must not need or earn a worker trust record")
	}
}