import { strict as assert } from "node:assert";
import { mock, test } from "node:test";
import { createRequire } from "node:module";
import { resolve } from "node:path";
import { randomUUID } from "node:crypto";
import {
  AnnouncementAudience,
  EventParticipationStatus as S,
  PrismaClient,
  RsvpMode,
  TerminStatus,
  TerminType,
  UserRole,
} from "@prisma/client";

// No database work without an explicitly supplied local test database.
test(
  "Elternabläufe gegen PostgreSQL",
  { skip: !process.env.TEST_DATABASE_URL },
  async (t) => {
    const url = new URL(process.env.TEST_DATABASE_URL!);
    assert.ok(
      ["127.0.0.1", "localhost"].includes(url.hostname),
      "Nur lokale Testdatenbanken sind erlaubt",
    );
    assert.ok(
      /test|parent_flows/.test(url.pathname),
      "Der Datenbankname muss ausdrücklich eine Testdatenbank kennzeichnen",
    );
    process.env.DATABASE_URL = url.toString();
    const db = new PrismaClient();
    const id = randomUUID();
    const kitaId = `parent-test-${id}`;
    const otherKitaId = `other-test-${id}`;
    let user = {
      id: `parent-a-${id}`,
      kitaId,
      familyId: `family-${id}`,
      role: UserRole.ELTERN as UserRole,
    };
    const moduleMock = mock as typeof mock & {
      module: (
        specifier: string,
        options: { namedExports: Record<string, unknown> },
      ) => unknown;
    };
    moduleMock.module("../src/lib/auth-utils.ts", {
      namedExports: {
        requireKitaSession: async () => ({ user }),
        getKitaSession: async () => ({ user }),
        requireRole: async (roles: UserRole[]) => {
          assert.ok(roles.includes(user.role));
          return { user };
        },
      },
    });
    moduleMock.module("../src/auth.ts", {
      namedExports: { auth: async () => ({ user }) },
    });
    moduleMock.module("next/cache", {
      namedExports: { revalidatePath: () => {} },
    });
    const loadAfterMocks = createRequire(
      resolve("tests/parent-flows.integration.test.ts"),
    );
    const { submitEventRsvp } = loadAfterMocks(
      "../src/actions/rsvp",
    ) as typeof import("../src/actions/rsvp");
    const { updateTerminAdmin } = loadAfterMocks(
      "../src/app/dashboard/kalender/actions",
    ) as typeof import("../src/app/dashboard/kalender/actions");
    const { createAnnouncement, markAnnouncementRead } = loadAfterMocks(
      "../src/actions/announcements",
    ) as typeof import("../src/actions/announcements");
    const { GET: getAttachment } = loadAfterMocks(
      "../src/app/api/announcements/attachments/[id]/route",
    ) as typeof import("../src/app/api/announcements/attachments/[id]/route");
    const familyId = user.familyId;
    const startDate = new Date(Date.now() + 86400000 * 3);
    const endDate = new Date(startDate.getTime() + 3600000);
    const eventBase = {
      kitaId,
      title: "Testtermin",
      type: TerminType.SONSTIGES,
      status: TerminStatus.CONFIRMED,
      startDate,
      endDate,
      requiresRsvp: true,
    };
    const updateBase = {
      title: "Testtermin geändert",
      type: TerminType.SONSTIGES,
      startDate: startDate.toISOString(),
      endDate: endDate.toISOString(),
    };
    let teacherAnnouncementId = "";
    try {
      await db.kita.create({
        data: { id: kitaId, name: "Elternabläufe Test", slug: kitaId },
      });
      await db.kita.create({
        data: { id: otherKitaId, name: "Andere Kita", slug: otherKitaId },
      });
      await db.family.create({
        data: { id: familyId, kitaId, name: "Testfamilie" },
      });
      await db.family.create({
        data: {
          id: `other-family-${id}`,
          kitaId: otherKitaId,
          name: "Fremde Familie",
        },
      });
      await db.user.create({
        data: {
          id: user.id,
          kitaId,
          familyId,
          email: `${id}@example.test`,
          passwordHash: "test",
          firstName: "Test",
          lastName: "Eltern",
        },
      });
      const children = await Promise.all(
        ["a", "b"].map((suffix) =>
          db.child.create({
            data: {
              id: `${suffix}-${id}`,
              kitaId,
              familyId,
              firstName: suffix,
              lastName: "Test",
            },
          }),
        ),
      );
      const foreign = await db.child.create({
        data: {
          kitaId: otherKitaId,
          familyId: `other-family-${id}`,
          firstName: "Fremd",
          lastName: "Test",
        },
      });
      const inactive = await db.child.create({
        data: {
          kitaId,
          familyId,
          firstName: "Inaktiv",
          lastName: "Test",
          active: false,
        },
      });
      const familyEvent = await db.termin.create({
        data: { ...eventBase, rsvpMode: RsvpMode.FAMILY },
      });
      const childEvent = await db.termin.create({
        data: {
          ...eventBase,
          rsvpMode: RsvpMode.CHILD,
          mitbringselListEnabled: true,
          participantInfo: "Nur Teilnehmende",
        },
      });
      const familyPayload = {
        eventId: familyEvent.id,
        mode: RsvpMode.FAMILY,
        status: S.ATTENDING,
        adultCount: 2,
      };
      const childPayload = {
        eventId: childEvent.id,
        mode: RsvpMode.CHILD,
        responses: [
          { childId: children[0].id, status: S.ATTENDING },
          { childId: children[1].id, status: S.NOT_ATTENDING },
        ],
      };

      await t.test(
        "Zwei Elternkonten ändern eine gemeinsame Familienantwort",
        async () => {
          assert.equal((await submitEventRsvp(familyPayload)).success, true);
          user = { ...user, id: `parent-b-${id}` };
          assert.equal(
            (await submitEventRsvp({ ...familyPayload, adultCount: 3 }))
              .success,
            true,
          );
          assert.equal(
            await db.familyEventParticipation.count({
              where: { eventId: familyEvent.id },
            }),
            1,
          );
          assert.equal(
            (
              await db.familyEventParticipation.findFirstOrThrow({
                where: { eventId: familyEvent.id },
              })
            ).adultCount,
            3,
          );
          assert.ok(
            (await submitEventRsvp({ ...familyPayload, adultCount: 0 })).error,
          );
          assert.equal(
            (
              await submitEventRsvp({
                ...familyPayload,
                status: S.NOT_ATTENDING,
                adultCount: 0,
              })
            ).success,
            true,
          );
          assert.equal(
            (
              await db.familyEventParticipation.findFirstOrThrow({
                where: { eventId: familyEvent.id },
              })
            ).adultCount,
            0,
          );
        },
      );
      await t.test(
        "Alle Kinder werden gemeinsam gespeichert, fremde/inaktive Kinder abgewiesen",
        async () => {
          assert.equal((await submitEventRsvp(childPayload)).success, true);
          for (const childId of [foreign.id, inactive.id]) {
            assert.ok(
              (
                await submitEventRsvp({
                  ...childPayload,
                  responses: [
                    { childId: children[0].id, status: S.NOT_ATTENDING },
                    { childId, status: S.ATTENDING },
                  ],
                })
              ).error,
            );
          }
          assert.ok(
            (
              await submitEventRsvp({
                ...childPayload,
                responses: [childPayload.responses[0]],
              })
            ).error,
          );
          const rows = await db.eventParticipation.findMany({
            where: { eventId: childEvent.id },
            orderBy: { childId: "asc" },
          });
          assert.equal(rows.length, 2);
          assert.equal(rows[0].status, S.ATTENDING);
          assert.equal(rows[1].status, S.NOT_ATTENDING);
        },
      );
      await t.test(
        "Falsche Antwortart und fremde Kita können nicht beschrieben werden",
        async () => {
          assert.ok(
            (
              await submitEventRsvp({
                ...familyPayload,
                eventId: childEvent.id,
              })
            ).error,
          );
          user = { ...user, kitaId: otherKitaId };
          assert.ok((await submitEventRsvp(familyPayload)).error);
          user = { ...user, kitaId };
        },
      );
      await t.test(
        "Frist, Absage und deaktiviertes Terminmodul verhindern Antworten",
        async () => {
          await db.termin.update({
            where: { id: familyEvent.id },
            data: { rsvpDeadline: new Date(Date.now() - 1000) },
          });
          assert.ok((await submitEventRsvp(familyPayload)).error);
          await db.termin.update({
            where: { id: familyEvent.id },
            data: { rsvpDeadline: null, status: TerminStatus.CANCELLED },
          });
          assert.ok((await submitEventRsvp(familyPayload)).error);
          await db.termin.update({
            where: { id: familyEvent.id },
            data: { status: TerminStatus.CONFIRMED },
          });
          await db.kita.update({
            where: { id: kitaId },
            data: { terminModuleEnabled: false },
          });
          assert.ok((await submitEventRsvp(familyPayload)).error);
          await db.kita.update({
            where: { id: kitaId },
            data: { terminModuleEnabled: true },
          });
        },
      );
      await t.test(
        "Normale Terminänderung erhält RSVP-Felder; Antwortart ist nach Antwort gesperrt",
        async () => {
          user = { ...user, role: UserRole.ADMIN };
          assert.equal(
            (await updateTerminAdmin(childEvent.id, updateBase)).success,
            true,
          );
          const event = await db.termin.findUniqueOrThrow({
            where: { id: childEvent.id },
          });
          assert.equal(event.requiresRsvp, true);
          assert.equal(event.mitbringselListEnabled, true);
          assert.equal(event.participantInfo, "Nur Teilnehmende");
          assert.ok(
            (
              await updateTerminAdmin(childEvent.id, {
                ...updateBase,
                rsvpMode: RsvpMode.FAMILY,
              })
            ).error,
          );
        },
      );
      await t.test(
        "Gleichzeitige erste Antwort und Modusänderung bleiben widerspruchsfrei",
        async () => {
          const event = await db.termin.create({
            data: { ...eventBase, rsvpMode: RsvpMode.FAMILY },
          });
          await Promise.all([
            submitEventRsvp({ ...familyPayload, eventId: event.id }),
            updateTerminAdmin(event.id, {
              ...updateBase,
              rsvpMode: RsvpMode.CHILD,
            }),
          ]);
          const stored = await db.termin.findUniqueOrThrow({
            where: { id: event.id },
            include: { familyParticipations: true },
          });
          assert.ok(
            stored.rsvpMode === RsvpMode.FAMILY
              ? stored.familyParticipations.length === 1
              : stored.familyParticipations.length === 0,
          );
        },
      );
      await t.test(
        "Empfängergruppe wird auch ohne Mail gespeichert",
        async () => {
          user = { ...user, id: `parent-a-${id}`, role: UserRole.ADMIN };
          const form = new FormData();
          form.set("title", "Nur ErzieherInnen");
          form.set("content", "Interne Teammitteilung");
          form.set("audience", "ERZIEHER");
          assert.equal((await createAnnouncement(form)).success, true);
          const announcement = await db.announcement.findFirstOrThrow({
            where: { kitaId, title: "Nur ErzieherInnen" },
          });
          assert.equal(announcement.audience, AnnouncementAudience.ERZIEHER);
          teacherAnnouncementId = announcement.id;
          await db.attachment.create({
            data: {
              id: `teacher-attachment-${id}`,
              announcementId: announcement.id,
              fileName: "team.pdf",
              fileUrl: `/api/announcements/attachments/teacher-attachment-${id}`,
              fileType: "application/pdf",
            },
          });
        },
      );
      await t.test(
        "Eltern können Teammitteilungen weder als gelesen markieren noch Anhänge abrufen",
        async () => {
          user = { ...user, role: UserRole.ELTERN };
          assert.ok((await markAnnouncementRead(teacherAnnouncementId)).error);
          const response = await getAttachment(
            new Request("http://localhost/test"),
            { params: Promise.resolve({ id: `teacher-attachment-${id}` }) },
          );
          assert.equal(response.status, 404);
          assert.equal(
            await db.announcementRead.count({
              where: { announcementId: teacherAnnouncementId },
            }),
            0,
          );
          user = { ...user, role: UserRole.ERZIEHER };
          assert.equal(
            (await markAnnouncementRead(teacherAnnouncementId)).success,
            true,
          );
          user = { ...user, kitaId: otherKitaId };
          assert.ok((await markAnnouncementRead(teacherAnnouncementId)).error);
        },
      );
    } finally {
      await db.kita.deleteMany({
        where: { id: { in: [kitaId, otherKitaId] } },
      });
      await db.$disconnect();
      const { prisma } = loadAfterMocks(
        "../src/lib/prisma",
      ) as typeof import("../src/lib/prisma");
      await prisma.$disconnect();
      mock.restoreAll();
    }
  },
);