package feeds_test

import (
	"context"
	"fmt"
	"net/http"
	"net/http/httptest"
	"os"
	"show-rss/src/feeds"
	"testing"
	"time"
)

func TestFeedFetch(t *testing.T) {
	ctx := context.Background()

	proxyU := feeds.ProxyU
	feeds.ProxyU = nil
	t.Cleanup(func() {
		feeds.ProxyU = proxyU
	})

	s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		t.Logf("%s", r.URL.String())

		b, _ := os.ReadFile("testdata/slashdot.rss")
		w.Write(b)
	}))
	t.Cleanup(s.Close)

	created := time.Now().Add(-4 * time.Second)
	feed := feeds.Feed{
		Entry: feeds.Entry{
			ID:      "id",
			Created: created,
			Updated: created,
			Deleted: time.Time{},
		},
		Version: feeds.Version{
			Created: created,
			URL:     s.URL,
			Cron:    "* * * * *",
			Pattern: ".*",
		},
		Execution: feeds.Execution{
			Executed: created.Add(-2 * time.Second),
			Version:  created,
		},
	}

	items, err := feed.Fetch(ctx)
	if err != nil {
		t.Fatalf("failed fetch: %v", err)
	}
	for i, item := range items {
		t.Logf("[%d] %+v", i, item)
	}

	if len(items) != 15 {
		t.Fatalf("expected 15 items but got %d", len(items))
	}

	if items[0].Body == "" {
		t.Errorf("no body")
	}
	items[0].Body = ""

	expect := feeds.Item{
		Title:   `Cheap 'Transforming' Electric Truck Announced by Jeff Bezos-Backed Startup`,
		Link:    `https://tech.slashdot.org/story/25/04/26/0425259/cheap-transforming-electric-truck-announced-by-jeff-bezos-backed-startup?utm_source=rss1.0mainlinkanon&utm_medium=feed`,
		Links:   []string{`https://tech.slashdot.org/story/25/04/26/0425259/cheap-transforming-electric-truck-announced-by-jeff-bezos-backed-startup?utm_source=rss1.0mainlinkanon&utm_medium=feed`},
		Preview: `It's a pickup truck "that can change into whatever...`,
	}
	if fmt.Sprintf("%+v", items[0]) != fmt.Sprintf("%+v", expect) {
		t.Errorf("expected\n\t%+v but got \n\t%+v", expect, items[0])
	}
}

func TestFeedFetchURL(t *testing.T) {
	cases := map[string]string{
		"http://host/path?k=v":  "http://host/path?k=v",
		"https://host/path?k=v": "https://host/path?k=v",
		"nyaa://?q=a b&u=c d":   "https://nyaa.si/?c=0_0&f=0&page=rss&q=a+b&u=c+d",
	}

	for given, want := range cases {
		given := given
		want := want
		t.Run(given, func(t *testing.T) {
			f := feeds.Feed{}
			f.Version.URL = given
			got, _ := f.FetchURL()
			if got := got.String(); got != want {
				t.Errorf("expected %q but got %q", want, got)
			}
		})
	}
}