import { MorLocationTuple } from "./mor-locations.data";
import {
  MorGeoMappingError,
  normalizeName,
  resolveMorGeo,
  tryResolveMorGeo,
} from "./mor-location.resolver";

/**
 * Rows copied verbatim out of the Ministry sheet (`EIMS_COUNTRY_REGION_VW`), chosen for the traps
 * the real data contains rather than for tidiness:
 *
 *  - BABILE and KERSA each exist in two different zones with different LOCALITY_NOs — the reason a
 *    global name lookup is unsafe and the hierarchy is mandatory.
 *  - ILLUBABOR has BURE twice under the same zone with different LOCALITY_NOs (691 and 890, the
 *    second with the Ministry's own trailing space) — a genuine ambiguity that must never be
 *    silently resolved to the first row.
 *  - "Wal-Mera" and "Akaki woreda" carry the sheet's mixed casing and punctuation.
 */
const FIXTURE: MorLocationTuple[] = [
  [70, "Ethiopia", 6, "SOMALI", 31, "FAAFAN ZONE", 190, "JIJIGA"],
  [70, "Ethiopia", 6, "SOMALI", 31, "FAAFAN ZONE", 194, "BABILE"],
  [70, "Ethiopia", 6, "SOMALI", 30, "SITI ZONE", 197, "DENBEL"],
  [70, "Ethiopia", 2, "OROMIA", 8, "MISRAK HARARGE", 495, "BABILE"],
  [70, "Ethiopia", 2, "OROMIA", 8, "MISRAK HARARGE", 482, "KERSA"],
  [70, "Ethiopia", 2, "OROMIA", 72, "JIMMA ZONE", 503, "KERSA"],
  [70, "Ethiopia", 2, "OROMIA", 73, "ILLUBABOR", 691, "BURE"],
  [70, "Ethiopia", 2, "OROMIA", 73, "ILLUBABOR", 890, "BURE "],
  [70, "Ethiopia", 2, "OROMIA", 86, "FINFINE VIC SPEC", 976, "Wal-Mera"],
  [70, "Ethiopia", 2, "OROMIA", 86, "FINFINE VIC SPEC", 909, "Akaki woreda"],
  [70, "Ethiopia", 13, "ADDIS ABABA", 78, "BOLE", 1100, "WOREDA 1"],
  [253, "Djibouti", 1, "DJIBOUTI", 1, "DJIBOUTI VILLE", 1, "BALBALA"],
];

const JIJIGA = {
  country: "Ethiopia",
  region: "SOMALI",
  zone: "FAAFAN ZONE",
  woreda: "JIJIGA",
};

describe("normalizeName", () => {
  it("collapses whitespace, trims, and compares case-insensitively", () => {
    expect(normalizeName("  FAAFAN   ZONE ")).toBe("FAAFAN ZONE");
    expect(normalizeName("faafan zone")).toBe("FAAFAN ZONE");
    expect(normalizeName("  FAAFAN   ZONE ")).toBe(normalizeName("faafan zone"));
  });

  it("normalizes harmless punctuation and hyphen/space differences", () => {
    expect(normalizeName("Wal-Mera")).toBe("WAL MERA");
    expect(normalizeName("Wal Mera")).toBe("WAL MERA");
    expect(normalizeName("ZONE 1 (AYSSAITA)")).toBe("ZONE 1 AYSSAITA");
    expect(normalizeName("Ber'ano")).toBe("BERANO");
    expect(normalizeName("KEAHORE/HADAT/")).toBe("KEAHORE HADAT");
  });

  it("keeps digits, which several MoR locality names depend on", () => {
    expect(normalizeName(" woreda  10 ")).toBe("WOREDA 10");
    expect(normalizeName("WOREDA 1")).not.toBe(normalizeName("WOREDA 10"));
  });
});

describe("resolveMorGeo", () => {
  it("resolves the exact MoR spelling to the Ministry's own codes", () => {
    expect(resolveMorGeo(JIJIGA, FIXTURE)).toEqual({
      Country: "70",
      Region: "6",
      City: "31",
      Wereda: "190",
    });
  });

  it("resolves the EDR/e-Trade spellings through the alias layer", () => {
    expect(
      resolveMorGeo(
        {
          country: "Ethiopia",
          region: "Somali",
          zone: "Fafen",
          woreda: "Jigjiga",
        },
        FIXTURE,
      ),
    ).toEqual({ Country: "70", Region: "6", City: "31", Wereda: "190" });
  });

  it("is case-insensitive", () => {
    expect(
      resolveMorGeo(
        {
          country: "ethiopia",
          region: "somali",
          zone: "faafan zone",
          woreda: "jijiga",
        },
        FIXTURE,
      ),
    ).toEqual({ Country: "70", Region: "6", City: "31", Wereda: "190" });
  });

  it("ignores leading, trailing and repeated whitespace on every level", () => {
    expect(
      resolveMorGeo(
        {
          country: "  Ethiopia ",
          region: " SOMALI  ",
          zone: "  FAAFAN   ZONE ",
          woreda: "\tJIJIGA  ",
        },
        FIXTURE,
      ),
    ).toEqual({ Country: "70", Region: "6", City: "31", Wereda: "190" });
  });

  it("treats a hyphen as a space, in either direction", () => {
    const expected = { Country: "70", Region: "2", City: "86", Wereda: "976" };
    const base = {
      country: "Ethiopia",
      region: "Oromia",
      zone: "Finfine Vic Spec",
    };
    expect(resolveMorGeo({ ...base, woreda: "Wal-Mera" }, FIXTURE)).toEqual(expected);
    expect(resolveMorGeo({ ...base, woreda: "wal mera" }, FIXTURE)).toEqual(expected);
  });

  it("matches a zone whose MoR label carries the ' ZONE' suffix EDR does not store", () => {
    expect(resolveMorGeo({ ...JIJIGA, zone: "Faafan" }, FIXTURE).City).toBe("31");
    expect(
      resolveMorGeo(
        {
          country: "Ethiopia",
          region: "Somali",
          zone: "Siti",
          woreda: "Denbel",
        },
        FIXTURE,
      ),
    ).toEqual({ Country: "70", Region: "6", City: "30", Wereda: "197" });
  });

  describe("a locality name that exists in more than one zone", () => {
    it("picks BABILE by its full hierarchy, never by name alone", () => {
      expect(resolveMorGeo({ ...JIJIGA, woreda: "BABILE" }, FIXTURE).Wereda).toBe("194");
      expect(
        resolveMorGeo(
          {
            country: "Ethiopia",
            region: "OROMIA",
            zone: "MISRAK HARARGE",
            woreda: "BABILE",
          },
          FIXTURE,
        ).Wereda,
      ).toBe("495");
    });

    it("picks KERSA by its full hierarchy", () => {
      const oromia = { country: "Ethiopia", region: "OROMIA" };
      expect(
        resolveMorGeo({ ...oromia, zone: "MISRAK HARARGE", woreda: "KERSA" }, FIXTURE).Wereda,
      ).toBe("482");
      expect(
        resolveMorGeo({ ...oromia, zone: "JIMMA ZONE", woreda: "KERSA" }, FIXTURE).Wereda,
      ).toBe("503");
    });

    it("does not let a locality leak across regions", () => {
      // DENBEL exists under SOMALI/SITI ZONE only — asking for it under OROMIA must fail, not
      // fall back to the nationwide match the old flat maps would have found.
      expect(() =>
        resolveMorGeo(
          {
            country: "Ethiopia",
            region: "OROMIA",
            zone: "MISRAK HARARGE",
            woreda: "DENBEL",
          },
          FIXTURE,
        ),
      ).toThrow(/no MoR LOCALITY_DESC match/);
    });
  });

  describe("failures happen locally, before anything is filed", () => {
    const cases: Array<[string, Record<string, string>, RegExp]> = [
      ["unknown country", { ...JIJIGA, country: "Wakanda" }, /no MoR COUNTRY_NAME match/],
      ["unknown region", { ...JIJIGA, region: "Atlantis" }, /no MoR PARISH_NAME match/],
      ["unknown zone", { ...JIJIGA, zone: "Nowhere Zone" }, /no MoR CITY_NAME match/],
      ["unknown woreda", { ...JIJIGA, woreda: "Example" }, /no MoR LOCALITY_DESC match/],
    ];

    it.each(cases)("%s fails with an actionable validation error", (_label, input, pattern) => {
      expect(() => resolveMorGeo(input, FIXTURE)).toThrow(MorGeoMappingError);
      expect(() => resolveMorGeo(input, FIXTURE)).toThrow(pattern);
    });

    it("names the offending address in the message so the company record can be corrected", () => {
      expect(() => resolveMorGeo({ ...JIJIGA, woreda: "Example" }, FIXTURE)).toThrow(
        /country="Ethiopia", region="SOMALI", zone="FAAFAN ZONE", woreda="Example"/,
      );
    });

    it("refuses an ambiguous locality instead of taking the first row", () => {
      const input = {
        country: "Ethiopia",
        region: "OROMIA",
        zone: "ILLUBABOR",
        woreda: "BURE",
      };
      expect(() => resolveMorGeo(input, FIXTURE)).toThrow(MorGeoMappingError);
      expect(() => resolveMorGeo(input, FIXTURE)).toThrow(/ambiguous/);
      // Both colliding codes are named, and neither is silently selected.
      expect(() => resolveMorGeo(input, FIXTURE)).toThrow(/691, 890/);
      expect(tryResolveMorGeo(input, FIXTURE)).toBeNull();
    });

    it("fails loudly when the MoR master has not been generated yet", () => {
      expect(() => resolveMorGeo(JIJIGA, [])).toThrow(/MoR location master is empty/);
    });
  });

  it("reproduces MoR's numeric values unchanged, as strings", () => {
    const codes = resolveMorGeo(JIJIGA, FIXTURE);
    expect(codes).toEqual({
      Country: "70",
      Region: "6",
      City: "31",
      Wereda: "190",
    });
    for (const value of Object.values(codes)) {
      expect(typeof value).toBe("string");
      expect(value).toMatch(/^[0-9]+$/);
    }
    // The source row is the only origin of every code — no renumbering, no derivation.
    const [countryNo, , parishNo, , cityNo, , localityNo] = FIXTURE[0];
    expect(codes).toEqual({
      Country: String(countryNo),
      Region: String(parishNo),
      City: String(cityNo),
      Wereda: String(localityNo),
    });
  });

  it("never emits an Open Admin Data ETxx identifier", () => {
    for (const value of Object.values(resolveMorGeo(JIJIGA, FIXTURE))) {
      expect(value).not.toMatch(/^ET/i);
    }
  });

  it("treats a blank country as domestic, matching the column default", () => {
    expect(resolveMorGeo({ ...JIJIGA, country: "" }, FIXTURE).Country).toBe("70");
    expect(resolveMorGeo({ ...JIJIGA, country: null }, FIXTURE).Country).toBe("70");
  });

  it("resolves a named foreign country rather than defaulting it to Ethiopia", () => {
    expect(
      resolveMorGeo(
        {
          country: "Djibouti",
          region: "DJIBOUTI",
          zone: "DJIBOUTI VILLE",
          woreda: "BALBALA",
        },
        FIXTURE,
      ),
    ).toEqual({ Country: "253", Region: "1", City: "1", Wereda: "1" });
  });

  it("accepts a company record that already holds a MoR code, but only a real one", () => {
    expect(resolveMorGeo({ ...JIJIGA, region: "6" }, FIXTURE).Region).toBe("6");
    expect(() => resolveMorGeo({ ...JIJIGA, region: "999" }, FIXTURE)).toThrow(
      /no MoR PARISH_NAME match/,
    );
  });
});