package web

// Customer-claim arc (v0.50.0) — the Setup-tab claim card + the operator resend route.

import (
	"io"
	"log"
	"net/http/httptest"
	"strings"
	"testing"

	"gitea.dooplex.hu/admin/felhom-hub/internal/claim"
	"gitea.dooplex.hu/admin/felhom-hub/internal/store"
	"golang.org/x/crypto/bcrypt"
)

type uiFakeMailer struct{ sends []string }

func (f *uiFakeMailer) SendClaimEmail(kind, customerID, email, domain, code string) error {
	f.sends = append(f.sends, kind)
	return nil
}

func withUIClaim(t *testing.T, s *Server, st *store.Store) (*claim.Engine, *uiFakeMailer) {
	t.Helper()
	m := &uiFakeMailer{}
	e := &claim.Engine{Store: st, Mailer: m, Logger: log.New(io.Discard, "", 0)}
	s.SetClaimEngine(e)
	return e, m
}

// The Setup tab renders the claim card in each state, and never any plaintext code (there is
// none to render — the assertion pins that no template regression invents one).
func TestCustomerPage_ClaimCardStates(t *testing.T) {
	s, st := newTestServer(t)
	e, _ := withUIClaim(t, s, st)
	cc := &store.CustomerConfig{
		CustomerID: "acme", CustomerName: "Acme", Domain: "acme.hu",
		RetrievalPassword: "pw", APIKey: "k", Status: "active", Email: "owner@acme.hu",
	}
	if err := st.SaveCustomerConfig(cc); err != nil {
		t.Fatal(err)
	}

	// No claim row yet → neutral chip, no resend form.
	html := renderCustomerPage(t, s, "acme")
	if !strings.Contains(html, "no code issued yet") {
		t.Error("missing the no-code-issued chip")
	}
	if strings.Contains(html, "/configs/acme/claim-resend") {
		t.Error("resend form must not render before a code exists")
	}

	// Issued (unclaimed) → Nyitott chip + resend form; the bcrypt hash must NOT leak into HTML.
	cs, err := e.EnsureIssued(cc)
	if err != nil {
		t.Fatalf("EnsureIssued: %v", err)
	}
	html = renderCustomerPage(t, s, "acme")
	if !strings.Contains(html, "Nyitott — kód kiküldve") {
		t.Error("missing the unclaimed-emailed chip")
	}
	if !strings.Contains(html, "/configs/acme/claim-resend") || !strings.Contains(html, "Kód újraküldése") {
		t.Error("missing the resend form/button")
	}
	if strings.Contains(html, cs.CodeHash) {
		t.Error("the code HASH leaked into the page (nothing claim-secret may render)")
	}

	// Claimed → Claimed chip + the reset-flavored button label.
	if err := e.MarkClaimed(cc); err != nil {
		t.Fatalf("MarkClaimed: %v", err)
	}
	html = renderCustomerPage(t, s, "acme")
	if !strings.Contains(html, ">Claimed ") {
		t.Error("missing the Claimed chip")
	}
	if !strings.Contains(html, "Visszaállító kód küldése") {
		t.Error("claimed state should offer the reset-code button")
	}
}

// The resend route rotates the code (generation++) and redirects with a flash.
func TestClaimResendRoute_RotatesAndRedirects(t *testing.T) {
	s, st := newTestServer(t)
	e, m := withUIClaim(t, s, st)
	cc := &store.CustomerConfig{
		CustomerID: "acme", CustomerName: "Acme", Domain: "acme.hu",
		RetrievalPassword: "pw", APIKey: "k", Status: "active", Email: "owner@acme.hu",
	}
	st.SaveCustomerConfig(cc)
	if _, err := e.EnsureIssued(cc); err != nil {
		t.Fatalf("EnsureIssued: %v", err)
	}
	before, _ := st.GetClaim("acme")

	rr := httptest.NewRecorder()
	s.handleClaimResend(rr, httptest.NewRequest("POST", "/configs/acme/claim-resend", nil), "acme")
	if rr.Code != 303 {
		t.Fatalf("resend status = %d, want 303", rr.Code)
	}
	if loc := rr.Header().Get("Location"); !strings.Contains(loc, "flash=claim-resent") {
		t.Fatalf("resend redirect = %q", loc)
	}
	after, _ := st.GetClaim("acme")
	if after.Generation != before.Generation+1 {
		t.Fatalf("generation %d → %d, want +1", before.Generation, after.Generation)
	}
	if after.CodeHash == before.CodeHash {
		t.Fatal("resend did not rotate the hash")
	}
	if len(m.sends) != 2 {
		t.Fatalf("sends = %v, want issue+resend", m.sends)
	}
	// Sanity: the stored value is a bcrypt hash (never a plaintext code).
	if bcrypt.CompareHashAndPassword([]byte(after.CodeHash), []byte("definitely-wrong")) == nil {
		t.Fatal("stored hash verified a wrong code?!")
	}
}