package e2e

import (
	"net/url"
	"slices"
	"strings"
	"testing"
)

// sortCard returns the repo card whose name link is exactly name.
func sortCard(r *response, name string) *goquerySel {
	var found *goquerySel
	r.Find(".repo-card").Each(func(_ int, card *goquerySel) {
		if strings.TrimSpace(card.Find(".repo-name").First().Text()) == name {
			found = card
		}
	})
	return found
}

func TestSorting(t *testing.T) {
	e := newEnv(t)
	admin := e.admin()

	// sort-aaa is created first (older), sort-zzz second (newer). That lets
	// name order and creation order be told apart. my-repo is navigated to in
	// the cookie persistence test.
	e.createRepo(admin, "my-repo")
	e.createRepo(admin, "sort-aaa")
	e.createRepo(admin, "sort-zzz")

	t.Run("sort dropdown is visible on repo list page", func(t *testing.T) {
		opts := admin.get("/").Texts(".repo-sort-select option")
		if !contains(opts, "Newest") || !contains(opts, "Name") {
			t.Errorf("options = %v", opts)
		}
	})

	t.Run("newest option is selected by default", func(t *testing.T) {
		// A fresh session has no repo_sort cookie.
		fresh := e.admin()
		if got := fresh.get("/").Value(".repo-sort-select"); got != "created" {
			t.Errorf("selected sort = %q", got)
		}
	})

	t.Run("Go button is rendered inside noscript and the sort form works", func(t *testing.T) {
		// The button's visibility toggling needs a browser; the no-JS path is
		// the POST to /sort, which is what is asserted here.
		r := admin.get("/")
		// The HTML parser keeps noscript content as raw text, so match on it.
		raw := r.Find(`form[action="/sort"] noscript`).First().Text()
		if !strings.Contains(raw, `type="submit"`) || !strings.Contains(raw, ">Go<") {
			t.Errorf("noscript Go button missing: %q", raw)
		}
		s := e.admin()
		s.post("/sort", url.Values{"sort": {"name"}}).mustRedirect("/")
		if got := s.get("/").Value(".repo-sort-select"); got != "name" {
			t.Errorf("selected sort = %q", got)
		}
	})

	t.Run("selecting name sort sets cookie and persists on next visit", func(t *testing.T) {
		s := e.admin()
		s.post("/sort", url.Values{"sort": {"name"}}).mustRedirect("/")
		if c := s.cookie("repo_sort"); c == nil || c.Value != "name" {
			t.Fatalf("repo_sort cookie = %v", c)
		}
		if got := s.get("/").Value(".repo-sort-select"); got != "name" {
			t.Errorf("selected sort = %q", got)
		}
		// Navigate away and back to confirm the cookie persists.
		s.get("/my-repo")
		if got := s.get("/").Value(".repo-sort-select"); got != "name" {
			t.Errorf("selected sort after navigation = %q", got)
		}
	})

	t.Run("default sort shows newer repo before older repo", func(t *testing.T) {
		admin.setCookie("repo_sort", "created")
		names := admin.get("/?q=sort-").Texts(".repo-name")
		if slices.Index(names, "sort-zzz") >= slices.Index(names, "sort-aaa") {
			t.Errorf("names = %v", names)
		}
	})

	t.Run("name sort shows repos in alphabetical order", func(t *testing.T) {
		admin.setCookie("repo_sort", "name")
		names := admin.get("/?q=sort-").Texts(".repo-name")
		admin.setCookie("repo_sort", "created")
		if slices.Index(names, "sort-aaa") >= slices.Index(names, "sort-zzz") {
			t.Errorf("names = %v", names)
		}
	})

	t.Run("pinning a repo shows pinned badge on list page", func(t *testing.T) {
		r := admin.follow(admin.post("/sort-aaa/settings", url.Values{"is_pinned": {"1"}}))
		if !r.Has(".form-success") {
			t.Fatal("form-success missing")
		}
		card := sortCard(admin.get("/"), "sort-aaa")
		if card == nil {
			t.Fatal("sort-aaa card missing")
		}
		if card.Find(".badge-pinned").Length() == 0 {
			t.Error("pinned badge missing")
		}
	})

	t.Run("pinned repo appears before unpinned repos regardless of creation order", func(t *testing.T) {
		// sort-zzz is newer, so the default sort would list it first. Pinned
		// repos float above that.
		names := admin.get("/?q=sort-").Texts(".repo-name")
		if slices.Index(names, "sort-aaa") >= slices.Index(names, "sort-zzz") {
			t.Errorf("names = %v", names)
		}
	})

	t.Run("unpinning a repo removes the pinned badge", func(t *testing.T) {
		r := admin.follow(admin.post("/sort-aaa/settings", url.Values{}))
		if !r.Has(".form-success") {
			t.Fatal("form-success missing")
		}
		card := sortCard(admin.get("/"), "sort-aaa")
		if card == nil {
			t.Fatal("sort-aaa card missing")
		}
		if n := card.Find(".badge-pinned").Length(); n != 0 {
			t.Errorf("pinned badges = %d", n)
		}
	})
}