import { expect } from "chai";
import {
  type TechStepMappingRule,
  matchTechStep,
  normalizeText,
} from "../src/lib/tech-step-matcher.js";

describe("tech-step-matcher", () => {
  describe("normalizeText", () => {
    it("lowercases and strips accents", () => {
      expect(normalizeText("Déglacer AU FOUR")).to.equal("deglacer au four");
    });
  });

  describe("matchTechStep", () => {
    const simmer: TechStepMappingRule = {
      techStepId: 1,
      expression: "\\bmijot(er|ez|e|ant|é)\\b",
      weight: 15,
    };
    const cook: TechStepMappingRule = {
      techStepId: 2,
      expression: "\\bcui(re|sez|sant|sson)\\b|\\bcuit(e|es|s)?\\b",
      weight: 10,
    };
    const bake: TechStepMappingRule = {
      techStepId: 3,
      expression:
        "\\bcuire au four\\b|\\bcuisson au four\\b|\\benfourn(er|ez|é|ée|ées)\\b|\\bau four\\b",
      weight: 25,
    };

    it("matches an exact expression", () => {
      expect(matchTechStep("Faire mijoter à feu doux", [simmer])).to.equal(1);
    });

    it("is case- and accent-insensitive", () => {
      expect(matchTechStep("FAIRE MIJOTER", [simmer])).to.equal(1);
      expect(matchTechStep("faire mijoter", [simmer])).to.equal(1);
    });

    it("returns null when nothing matches", () => {
      expect(matchTechStep("Servir immédiatement", [simmer, cook, bake])).to.be.null;
    });

    it("picks the highest-weight match when several mappings match", () => {
      // "Cuire au four" matches both `cook` (weight 10) and `bake` (weight 25).
      expect(matchTechStep("Cuire au four pendant 30 minutes", [cook, bake])).to.equal(3);
      // Order-independent.
      expect(matchTechStep("Cuire au four pendant 30 minutes", [bake, cook])).to.equal(3);
    });

    it("breaks a weight tie by lowest techStepId", () => {
      const a: TechStepMappingRule = { techStepId: 5, expression: "\\bmelanger\\b", weight: 10 };
      const b: TechStepMappingRule = { techStepId: 2, expression: "\\bmelanger\\b", weight: 10 };
      expect(matchTechStep("Mélanger les ingrédients", [a, b])).to.equal(2);
    });
  });
});