import { beforeEach, describe, expect, test, vi } from "vitest";

const mocks = vi.hoisted(() => ({
  createKnowledgeBaseArticle: vi.fn(),
  getKbArticleBySlug: vi.fn(),
  getKnowledgeBaseArticlesForTemplateExport: vi.fn(),
  updateKnowledgeBaseArticle: vi.fn(),
  createKnowledgeBaseCategory: vi.fn(),
  getKbCategoryBySlug: vi.fn(),
  getKnowledgeBaseCategoriesForTemplateExport: vi.fn(),
  updateKnowledgeBaseCategory: vi.fn(),
  createKnowledgeBase: vi.fn(),
  getAllKnowledgeBases: vi.fn(),
  getKnowledgeBaseBySlug: vi.fn(),
  updateKnowledgeBase: vi.fn(),
  createKnowledgeBaseCategorySection: vi.fn(),
  updateKnowledgeBaseCategorySection: vi.fn(),
  adminGetAllUsersNames: vi.fn(),
}));

vi.mock("../db/kbArticles.db.server", () => ({
  createKnowledgeBaseArticle: mocks.createKnowledgeBaseArticle,
  getKbArticleBySlug: mocks.getKbArticleBySlug,
  getKnowledgeBaseArticlesForTemplateExport: mocks.getKnowledgeBaseArticlesForTemplateExport,
  updateKnowledgeBaseArticle: mocks.updateKnowledgeBaseArticle,
}));

vi.mock("../db/kbCategories.db.server", () => ({
  createKnowledgeBaseCategory: mocks.createKnowledgeBaseCategory,
  getKbCategoryBySlug: mocks.getKbCategoryBySlug,
  getKnowledgeBaseCategoriesForTemplateExport: mocks.getKnowledgeBaseCategoriesForTemplateExport,
  updateKnowledgeBaseCategory: mocks.updateKnowledgeBaseCategory,
}));

vi.mock("../db/knowledgeBase.db.server", () => ({
  createKnowledgeBase: mocks.createKnowledgeBase,
  getAllKnowledgeBases: mocks.getAllKnowledgeBases,
  getKnowledgeBaseBySlug: mocks.getKnowledgeBaseBySlug,
  updateKnowledgeBase: mocks.updateKnowledgeBase,
}));

vi.mock("../db/kbCategorySections.db.server", () => ({
  createKnowledgeBaseCategorySection: mocks.createKnowledgeBaseCategorySection,
  updateKnowledgeBaseCategorySection: mocks.updateKnowledgeBaseCategorySection,
}));

vi.mock("~/utils/db/users.db.server", () => ({
  adminGetAllUsersNames: mocks.adminGetAllUsersNames,
}));

import KnowledgeBaseTemplatesService from "./KnowledgeBaseTemplatesService.server";

function knowledgeBase(overrides: { id: string; slug: string; title: string }) {
  return {
    id: overrides.id,
    basePath: "/help",
    slug: overrides.slug,
    title: overrides.title,
    description: `${overrides.title} description`,
    defaultLanguage: "en",
    layout: "docs",
    color: 1,
    enabled: true,
    languages: JSON.stringify(["en", "de"]),
    links: JSON.stringify([{ href: "/help", title: "Help" }]),
    logo: "",
    seoImage: "",
  };
}

describe("KnowledgeBaseTemplatesService", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  test("exports multiple knowledge bases with flat category and article fetches", async () => {
    mocks.getAllKnowledgeBases.mockResolvedValue([
      knowledgeBase({ id: "kb_1", slug: "docs", title: "Docs" }),
      knowledgeBase({ id: "kb_2", slug: "support", title: "Support" }),
    ]);
    mocks.getKnowledgeBaseCategoriesForTemplateExport.mockResolvedValue([
      {
        id: "cat_1",
        knowledgeBaseId: "kb_1",
        slug: "start",
        order: 1,
        title: "Start",
        description: "Start here",
        icon: "book",
        language: "en",
        seoImage: "",
        sections: [{ id: "section_1", order: 1, title: "Basics", description: "The basics" }],
      },
      {
        id: "cat_2",
        knowledgeBaseId: "kb_2",
        slug: "faq",
        order: 1,
        title: "FAQ",
        description: "Answers",
        icon: "help",
        language: "en",
        seoImage: "",
        sections: [],
      },
    ]);
    mocks.getKnowledgeBaseArticlesForTemplateExport.mockResolvedValue([
      {
        id: "article_1",
        knowledgeBaseId: "kb_1",
        slug: "welcome",
        title: "Welcome",
        description: "Welcome article",
        order: 1,
        contentDraft: "draft",
        contentPublished: "published",
        contentPublishedAsText: "published",
        contentType: "markdown",
        language: "en",
        featuredOrder: null,
        seoImage: "",
        publishedAt: new Date("2026-01-01T00:00:00.000Z"),
        category: { slug: "start", title: "Start" },
        section: { order: 1, title: "Basics" },
        createdByUser: { email: "author@example.com", firstName: "Ada", lastName: "Lovelace", avatar: null },
        relatedArticles: [{ relatedArticle: { id: "article_2", order: 2, title: "Next", slug: "next" } }],
        _count: { views: 0, upvotes: 0, downvotes: 0 },
      },
      {
        id: "article_2",
        knowledgeBaseId: "kb_2",
        slug: "faq",
        title: "FAQ",
        description: "FAQ article",
        order: 1,
        contentDraft: "draft",
        contentPublished: "published",
        contentPublishedAsText: "published",
        contentType: "markdown",
        language: "en",
        featuredOrder: 1,
        seoImage: "",
        publishedAt: null,
        category: null,
        section: null,
        createdByUser: null,
        relatedArticles: [],
        _count: { views: 0, upvotes: 0, downvotes: 0 },
      },
    ]);

    const template = await KnowledgeBaseTemplatesService.getTemplate();

    expect(mocks.getAllKnowledgeBases).toHaveBeenCalledTimes(1);
    expect(mocks.getKnowledgeBaseCategoriesForTemplateExport).toHaveBeenCalledTimes(1);
    expect(mocks.getKnowledgeBaseCategoriesForTemplateExport).toHaveBeenCalledWith({ knowledgeBaseIds: ["kb_1", "kb_2"] });
    expect(mocks.getKnowledgeBaseArticlesForTemplateExport).toHaveBeenCalledTimes(1);
    expect(mocks.getKnowledgeBaseArticlesForTemplateExport).toHaveBeenCalledWith({ knowledgeBaseIds: ["kb_1", "kb_2"] });
    expect(template.knowledgeBases.map((kb) => kb.slug)).toEqual(["docs", "support"]);
    expect(template.categories.map((category) => [category.knowledgeBaseSlug, category.slug])).toEqual([
      ["docs", "start"],
      ["support", "faq"],
    ]);
    expect(template.articles.map((article) => [article.knowledgeBaseSlug, article.slug])).toEqual([
      ["docs", "welcome"],
      ["support", "faq"],
    ]);
    expect(template.articles[0]).toMatchObject({
      categorySlug: "start",
      categorySectionOrder: 1,
      createdByUserEmail: "author@example.com",
      publishedAt: "2026-01-01T00:00:00.000Z",
      relatedArticles: [{ slug: "next" }],
    });
  });
});