package handler

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

func TestHealthz(t *testing.T) {
	req := httptest.NewRequest(http.MethodGet, "/healthz", nil)
	rec := httptest.NewRecorder()

	New(nil, nil).Router().ServeHTTP(rec, req)

	if rec.Code != http.StatusOK {
		t.Fatalf("expected status %d, got %d", http.StatusOK, rec.Code)
	}

	var body map[string]string
	if err := json.NewDecoder(rec.Body).Decode(&body); err != nil {
		t.Fatalf("failed to decode body: %v", err)
	}
	if body["status"] != "ok" {
		t.Fatalf("expected status ok, got %q", body["status"])
	}
}

func TestPageParams(t *testing.T) {
	cases := []struct {
		query            string
		wantPage, wantSz int
	}{
		{"", 1, defaultPageSize},
		{"page=3&size=10", 3, 10},
		{"page=0&size=-5", 1, defaultPageSize},
		{"size=1000", 1, maxPageSize},
		{"page=abc", 1, defaultPageSize},
	}
	for _, c := range cases {
		req := httptest.NewRequest(http.MethodGet, "/?"+c.query, nil)
		page, size := pageParams(req)
		if page != c.wantPage || size != c.wantSz {
			t.Errorf("query %q: got page=%d size=%d, want page=%d size=%d",
				c.query, page, size, c.wantPage, c.wantSz)
		}
	}
}