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

import {
  applyTeamFields,
  findInvalidTeamCatalogReference,
  findUnsupportedTeamWeapon,
  limitPresets,
  parseTeamTransfer,
  parseTeamPresets,
  serializeTeamTransfer,
  teamTransferFileName,
  type TeamToolValue,
} from "./team-tools";

const team = (id: string, title = id): TeamToolValue => ({
  clientId: id, title, rotationSeconds: "20", combo: "E > Q",
  members: [1, 2, 3, 4].map((n) => ({ characterKey: `${id}-${n}`, weaponKey: null, artifactKey: null, secondArtifactKey: null, constellation: 0, refinement: 1, damage: String(n) })),
});

describe("team bulk tools", () => {
  it("copies selected fields without changing titles or mutating source", () => {
    const source = team("source", "Source");
    const target = team("target", "Keep title");
    const result = applyTeamFields([source, target], "source", new Set(["target"]), ["loadout"]);
    expect(result[1].title).toBe("Keep title");
    expect(result[1].members.map((member) => member.characterKey)).toEqual(["source-1", "source-2", "source-3", "source-4"]);
    expect(result[1].members.map((member) => member.damage)).toEqual(["1", "2", "3", "4"]);
    expect(source.members[0].characterKey).toBe("source-1");
  });

  it("does not apply to the source team", () => {
    const source = team("source");
    expect(applyTeamFields([source], "source", new Set(["source"]), ["combo"])).toEqual([source]);
  });

  it("copies one field for one character slot only", () => {
    const source = team("source");
    const target = team("target");
    source.members[0] = { ...source.members[0], characterKey: "mavuika", refinement: 1 };
    target.members[0] = { ...target.members[0], characterKey: "keep-character", refinement: 5 };

    const result = applyTeamFields(
      [source, target],
      "source",
      new Set(["target"]),
      ["member:0:refinement"],
    );

    expect(result[1].members[0].refinement).toBe(1);
    expect(result[1].members[0].characterKey).toBe("keep-character");
    expect(result[1].members.slice(1)).toEqual(target.members.slice(1));
  });

  it("applies fields to the matching character in a different slot", () => {
    const source = team("source");
    const target = team("target");
    source.members[1] = {
      ...source.members[1],
      characterKey: "nicole",
      weaponKey: "source-weapon",
    };
    target.members[3] = {
      ...target.members[3],
      characterKey: "nicole",
      weaponKey: "old-weapon",
    };

    const result = applyTeamFields(
      [source, target],
      "source",
      new Set(["target"]),
      ["member:1:weaponKey"],
    );

    expect(result[1].members[3].weaponKey).toBe("source-weapon");
    expect(result[1].members[1]).toEqual(target.members[1]);
  });

  it("falls back to the same slot when the character is not present", () => {
    const source = team("source");
    const target = team("target");
    source.members[1] = {
      ...source.members[1],
      characterKey: "nicole",
      refinement: 5,
    };

    const result = applyTeamFields(
      [source, target],
      "source",
      new Set(["target"]),
      ["member:1:refinement"],
    );

    expect(result[1].members[1].refinement).toBe(5);
  });

  it("detects an unsupported character and weapon after bulk apply", () => {
    const target = team("target");
    target.members[0] = {
      ...target.members[0],
      characterKey: "varka",
      weaponKey: "wolf-fang",
    };

    expect(
      findUnsupportedTeamWeapon(
        [target],
        new Set(["target"]),
        [{ key: "varka", name: "Varka", weaponType: "WEAPON_CLAYMORE" }],
        [{ key: "wolf-fang", name: "Wolf-Fang", weaponType: "WEAPON_SWORD_ONE_HAND" }],
      ),
    ).toEqual({ characterName: "Varka", weaponName: "Wolf-Fang" });
  });

  it("deduplicates and limits presets", () => {
    const presets = Array.from({ length: 7 }, (_, index) => ({ id: String(index), name: String(index), createdAt: String(index), team: { ...team(String(index)), clientId: undefined as never } }));
    expect(limitPresets([presets[0], presets[0], ...presets.slice(1)])).toHaveLength(5);
  });

  it("rejects malformed preset storage", () => {
    expect(parseTeamPresets("not-json")).toEqual([]);
    expect(parseTeamPresets(JSON.stringify([{ id: 1 }]))).toEqual([]);
  });

  it("round-trips every exported team field without the client id", () => {
    const source = team("source", "Ineffa Exai");
    source.rotationSeconds = "21.5";
    source.members[0] = {
      ...source.members[0],
      weaponKey: "weapon-1",
      artifactKey: "artifact-1",
      secondArtifactKey: "artifact-2",
      constellation: 2,
      refinement: 4,
      damage: "123456.78",
    };

    expect(parseTeamTransfer(serializeTeamTransfer(source))).toEqual({
      title: source.title,
      rotationSeconds: source.rotationSeconds,
      combo: source.combo,
      members: source.members,
    });
  });

  it("rejects malformed and unsupported team transfers", () => {
    expect(() => parseTeamTransfer("not-json")).toThrow();
    expect(() => parseTeamTransfer(JSON.stringify({
      type: "buzz-sheet.team",
      version: 2,
      team: team("source"),
    }))).toThrow();
  });

  it("uses the team name as a safe JSON download filename", () => {
    expect(teamTransferFileName("Ineffa Exai")).toBe("Ineffa Exai.json");
    expect(teamTransferFileName('A/B: Team?')).toBe("A-B- Team-.json");
    expect(teamTransferFileName("... ")).toBe("team.json");
  });

  it("reports missing and incompatible imported catalog references", () => {
    const source = team("source");
    source.members[0] = {
      ...source.members[0],
      characterKey: "varka",
      weaponKey: "wolf-fang",
    };
    const imported = { ...source, clientId: undefined as never };
    const characters = [
      { key: "varka", name: "Varka", weaponType: "WEAPON_CLAYMORE" },
      ...source.members.slice(1).map((member) => ({ key: member.characterKey, name: member.characterKey })),
    ];

    expect(findInvalidTeamCatalogReference(
      imported,
      characters,
      [{ key: "wolf-fang", name: "Wolf-Fang", weaponType: "WEAPON_SWORD_ONE_HAND" }],
      [],
    )).toBe("Varka ไม่รองรับอาวุธ Wolf-Fang");
    expect(findInvalidTeamCatalogReference(imported, [], [], [])).toContain("ไม่พบตัวละคร");
  });
});