package mila

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"net/url"
	"testing"
)

func TestHandlerSetAndGetContent(t *testing.T) {
	handler := NewHandler(DefaultConfig(), NewMemoryStore())

	params := url.Values{}
	params.Set("route", "3")
	params.Set("str", "Гостиный двор - Gostiny dvor")
	params.Set("tpl_name", "Гостиный двор")

	req := httptest.NewRequest(http.MethodGet, "/set-content?"+params.Encode(), nil)
	rec := httptest.NewRecorder()
	handler.ServeHTTP(rec, req)

	if rec.Code != http.StatusOK {
		t.Fatalf("set-content status=%d body=%s", rec.Code, rec.Body.String())
	}

	req = httptest.NewRequest(http.MethodGet, "/get-content", nil)
	rec = httptest.NewRecorder()
	handler.ServeHTTP(rec, req)

	if rec.Code != http.StatusOK {
		t.Fatalf("get-content status=%d body=%s", rec.Code, rec.Body.String())
	}

	var state ContentState
	if err := json.NewDecoder(rec.Body).Decode(&state); err != nil {
		t.Fatalf("decode response: %v", err)
	}
	if state.Route != "3" || state.Text != "Гостиный двор - Gostiny dvor" || state.Template != "Гостиный двор" {
		t.Fatalf("unexpected state: %+v", state)
	}
}

func TestHandlerGetBeforeSetReturns503(t *testing.T) {
	handler := NewHandler(DefaultConfig(), NewMemoryStore())

	req := httptest.NewRequest(http.MethodGet, "/get-content", nil)
	rec := httptest.NewRecorder()
	handler.ServeHTTP(rec, req)

	if rec.Code != http.StatusServiceUnavailable {
		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
	}
}

func TestHandlerRejectsInvalidSetContent(t *testing.T) {
	handler := NewHandler(DefaultConfig(), NewMemoryStore())

	req := httptest.NewRequest(http.MethodGet, "/set-content?route=1234&str=ok&tpl_name=tpl", nil)
	rec := httptest.NewRecorder()
	handler.ServeHTTP(rec, req)

	if rec.Code != http.StatusBadRequest {
		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
	}
}