using System.Text.Json.Nodes;

using decePubClient.E2E.Support;

using Microsoft.Playwright;

namespace decePubClient.E2E.Actions
{
	// The persona's notification policy from Settings: people it does not follow are filtered, a like from one waits in a
	// request the Notifications tab leads to, and letting the request in brings the notification back; the policy is put back to accepting everything, and
	// the stranger's permission is taken away again
	public sealed class NotificationPolicyTests(Browser browser)
	{
		[Fact]
		public async Task A_strangers_like_waits_in_a_request_the_persona_lets_in()
		{
			var personas = Pasture.Personas();
			var author = personas[0];
			// (a persona of the town the author does not follow)
			var stranger = default(Pasture.Persona);
			foreach (var candidate in personas.Skip(1))
				if ((await PersonaApi.Call(author, $"/api/v1/accounts/relationships?id[]={candidate.LocalId}"))![0]!["following"]!.GetValue<bool>() == false)
				{
					stranger = candidate;
					break;
				}
			Assert.SkipWhen(stranger is null, "the town's first persona follows every other");
			var strangerAcct = (await PersonaApi.Call(stranger!, "/api/v1/accounts/verify_credentials"))!["acct"]!.GetValue<string>();
			var post = (await PersonaApi.Call(author, "/api/v1/statuses", HttpMethod.Post,
				new JsonObject { ["status"] = $"like me, stranger {Guid.NewGuid():N}"[..30], ["visibility"] = "public" }))!;
			var id = post["id"]!.GetValue<string>();
			await using var session = await SignIn.As(browser, author);
			var page = session.Page;
			try
			{
				await Results.Cell("client.action.notification-policy", "privapub", author.UserName, async () =>
				{
					await page.GotoAsync($"{Pasture.Site}/settings");
					var header = page.Locator(".collapse-title", new() { HasText = "Notifications" }).First;
					await header.ClickAsync();
					var panel = page.Locator("[data-notification-policy]");
					await panel.WaitForAsync(new() { Timeout = 30000 });
					await panel.Locator("[data-policy='for_not_following']").SelectOptionAsync("filter");
					await panel.Locator("[data-policy-save]").ClickAsync();
					Assert.True(await Pasture.Eventually(async () =>
						(await PersonaApi.Call(author, "/api/v2/notifications/policy"))!["for_not_following"]!.GetValue<string>() == "filter", 15), "the policy was never saved");

					await PersonaApi.Call(stranger!, $"/api/v1/statuses/{id}/favourite", HttpMethod.Post);
					Assert.DoesNotContain((await PersonaApi.Call(author, "/api/v1/notifications?types[]=favourite"))!.AsArray(),
						n => n!["account"]!["acct"]!.GetValue<string>() == strangerAcct && n["status"]?["id"]?.GetValue<string>() == id);

					// the Notifications tab says requests are waiting, and leads to them
					await page.GotoAsync($"{Pasture.Site}/");
					await page.EvaluateAsync("() => localStorage.removeItem('FeedFilter')");
					await page.GotoAsync($"{Pasture.Site}/");
					await page.GetByRole(AriaRole.Tab).Filter(new() { Has = page.Locator(".ion-md-notifications") }).ClickAsync();
					await page.Locator("[data-filtered-requests]").ClickAsync(new() { Timeout = 30000 });
					var request = page.Locator($"[data-notification-requests] [data-request='{strangerAcct}']");
					await request.WaitForAsync(new() { Timeout = 30000 });
					await request.Locator("[data-request-accept]").ClickAsync();
					await Assertions.Expect(request).ToHaveCountAsync(0, new() { Timeout = 15000 });
					Assert.Contains((await PersonaApi.Call(author, "/api/v1/notifications?types[]=favourite"))!.AsArray(),
						n => n!["account"]!["acct"]!.GetValue<string>() == strangerAcct && n["status"]?["id"]?.GetValue<string>() == id);
					await session.AssertGuards();
				}, page);
			}
			finally
			{
				await PersonaApi.Call(author, "/api/v2/notifications/policy", HttpMethod.Patch, new JsonObject { ["for_not_following"] = "accept" });
				// (letting a request in lets its account in for good, which no API takes back)
				await Pasture.Mongo($"db.NotificationPermission.deleteMany({{AvatarId: '{author.LocalId}', FromActorURI: '{stranger!.ActorUri}'}})");
				await PersonaApi.Call(author, $"/api/v1/statuses/{id}", HttpMethod.Delete);
			}
		}
	}
}