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

const findManyMock = vi.fn();

vi.mock("../../lib/server/env", () => ({
  isDatabaseConfigured: () => true,
}));

vi.mock("../../lib/server/db", () => ({
  prisma: {
    methodFacet: {
      findMany: (...args: unknown[]) => findManyMock(...args),
    },
  },
}));

import {
  listMethodRecommendations,
  scoreTemplatesByFacets,
} from "../../lib/server/methodRecommendations";

beforeEach(() => {
  findManyMock.mockReset();
});

describe("listMethodRecommendations", () => {
  it("returns empty rankings when no facets are requested", async () => {
    const result = await listMethodRecommendations({
      section: "communication",
      facets: {},
    });
    expect(result).toEqual({ rankedSlugs: [], matchesBySlug: {} });
    expect(findManyMock).not.toHaveBeenCalled();
  });

  it("ranks from the job rule and scores maturity once", async () => {
    const once = await listMethodRecommendations({
      section: "decisionApproaches",
      facets: {
        size: ["thirteenToOneHundred"],
        orgType: ["workersCoop"],
        maturity: ["established"],
      },
    });
    const several = await listMethodRecommendations({
      section: "decisionApproaches",
      facets: {
        size: ["thirteenToOneHundred"],
        orgType: ["workersCoop"],
        maturity: ["established", "earlyStage", "enterprise"],
      },
    });
    expect(once?.rankedSlugs).toEqual(several?.rankedSlugs);
    expect(once?.rankedSlugs[0]).toBeTruthy();
    expect(findManyMock).not.toHaveBeenCalled();
  });

  it("uses only the main kind for eligibility", async () => {
    const result = await listMethodRecommendations({
      section: "decisionApproaches",
      facets: {
        size: ["thirteenToOneHundred"],
        orgType: ["workersCoop", "forProfit"],
        scale: ["local"],
        maturity: ["established"],
      },
    });
    expect(result?.rankedSlugs).toContain("consent-sociocracy");
    expect(findManyMock).not.toHaveBeenCalled();
  });
});

describe("scoreTemplatesByFacets (CR-88 §9.1)", () => {
  it("aggregates per-method matches per template", async () => {
    findManyMock.mockResolvedValueOnce([
      {
        section: "communication",
        slug: "loomio",
        group: "size",
        value: "twoToFive",
      },
      {
        section: "decisionApproaches",
        slug: "consensus-decision-making",
        group: "orgType",
        value: "workersCoop",
      },
    ]);

    const result = await scoreTemplatesByFacets({
      facets: {
        size: ["twoToFive"],
        orgType: ["workersCoop"],
      },
      templateMethods: [
        {
          templateSlug: "consensus",
          methods: [
            { section: "communication", slug: "loomio" },
            {
              section: "decisionApproaches",
              slug: "consensus-decision-making",
            },
          ],
        },
        {
          templateSlug: "monarch",
          methods: [
            {
              section: "decisionApproaches",
              slug: "benevolent-dictator",
            },
          ],
        },
      ],
    });

    expect(result).toEqual([
      {
        templateSlug: "consensus",
        score: 2,
        matchedFacets: [
          "communication:loomio:size:twoToFive",
          "decisionApproaches:consensus-decision-making:orgType:workersCoop",
        ],
      },
      { templateSlug: "monarch", score: 0, matchedFacets: [] },
    ]);
  });

  it("returns 0-score entries for every template when facets are empty", async () => {
    const result = await scoreTemplatesByFacets({
      facets: {},
      templateMethods: [
        { templateSlug: "consensus", methods: [] },
        { templateSlug: "monarch", methods: [] },
      ],
    });
    expect(result).toEqual([
      { templateSlug: "consensus", score: 0, matchedFacets: [] },
      { templateSlug: "monarch", score: 0, matchedFacets: [] },
    ]);
    expect(findManyMock).not.toHaveBeenCalled();
  });
});