package api

import (
	"encoding/json"
	"net/http"
	"testing"

	"gitea.dooplex.hu/admin/felhom-hub/internal/store"
)

type fakeLatest struct{ v string }

func (f fakeLatest) LatestVersion() string { return f.v }

// The controller report ACK advertises the effective floor + latest version (Phase 2).
func TestReportACK_FloorAndLatest(t *testing.T) {
	h, st, _ := newTestHandler(t)
	h.SetLatestVersionProvider(fakeLatest{v: "0.86.0"})

	// Customer with a per-customer override; a global default also set (override must win in the ACK).
	st.SetDefaultMinControllerVersion("0.85.0")
	if err := st.SaveCustomerConfig(&store.CustomerConfig{
		CustomerID: "c", RetrievalPassword: "pw", APIKey: "k", ConfigJSON: "{}",
		MinControllerVersion: "0.87.0",
	}); err != nil {
		t.Fatalf("SaveCustomerConfig: %v", err)
	}

	rr := do(h, http.MethodPost, "/report", globalKey, `{"customer_id":"c"}`)
	if rr.Code != http.StatusOK {
		t.Fatalf("report status = %d, want 200 (body=%s)", rr.Code, rr.Body.String())
	}
	var ack map[string]interface{}
	if err := json.Unmarshal(rr.Body.Bytes(), &ack); err != nil {
		t.Fatalf("decode ACK: %v", err)
	}
	if ack["min_controller_version"] != "0.87.0" {
		t.Errorf("ACK min_controller_version = %v, want 0.87.0 (override beats global)", ack["min_controller_version"])
	}
	if ack["latest_version"] != "0.86.0" {
		t.Errorf("ACK latest_version = %v, want 0.86.0", ack["latest_version"])
	}
}

// No floor configured anywhere → the ACK omits min_controller_version (Phase 2 inert).
func TestReportACK_NoFloorOmitted(t *testing.T) {
	h, st, _ := newTestHandler(t)
	if err := st.SaveCustomerConfig(&store.CustomerConfig{
		CustomerID: "c", RetrievalPassword: "pw", APIKey: "k", ConfigJSON: "{}",
	}); err != nil {
		t.Fatalf("SaveCustomerConfig: %v", err)
	}

	rr := do(h, http.MethodPost, "/report", globalKey, `{"customer_id":"c"}`)
	if rr.Code != http.StatusOK {
		t.Fatalf("report status = %d, want 200", rr.Code)
	}
	var ack map[string]interface{}
	json.Unmarshal(rr.Body.Bytes(), &ack)
	if _, ok := ack["min_controller_version"]; ok {
		t.Errorf("ACK should omit min_controller_version when no floor; got %v", ack["min_controller_version"])
	}
	// latest_version is also omitted when no provider wired.
	if _, ok := ack["latest_version"]; ok {
		t.Errorf("ACK should omit latest_version when no provider; got %v", ack["latest_version"])
	}
}