import { expect } from "@esm-bundle/chai";
import { SkillTreeFactory } from "../../src/factories/SkillTreeFactory.js";

describe("System: Skill Tree Factory", () => {
  let factory;
  let mockTemplates;
  let mockSkills;
  let mockClassConfig;

  beforeEach(() => {
    // 1. Setup Mock Data
    mockTemplates = {
      TEMPLATE_STANDARD_30: {
        nodes: {
          ROOT_NODE: {
            tier: 1,
            type: "SLOT_STAT_PRIMARY",
            children: ["CHILD_NODE"],
          },
          CHILD_NODE: { tier: 1, type: "SLOT_SKILL_ACTIVE_1", children: [] },
        },
      },
    };

    mockSkills = {
      SKILL_FIREBALL: { id: "SKILL_FIREBALL", name: "Fireball", damage: 10 },
    };

    mockClassConfig = {
      id: "TEST_CLASS",
      skillTreeData: {
        primary_stat: "attack",
        secondary_stat: "defense",
        active_skills: ["SKILL_FIREBALL"],
        passive_skills: ["PASSIVE_BURNING"],
      },
    };

    // 2. Initialize Factory
    factory = new SkillTreeFactory(mockTemplates, mockSkills);
  });

  it("CoA 1: Should maintain the topology (structure) of the template", () => {
    const tree = factory.createTree(mockClassConfig);

    expect(tree.nodes).to.have.property("ROOT_NODE");
    expect(tree.nodes).to.have.property("CHILD_NODE");
    expect(tree.nodes["ROOT_NODE"].children).to.include("CHILD_NODE");
  });

  it("CoA 2: Should inject Primary Stats based on Class Config", () => {
    const tree = factory.createTree(mockClassConfig);
    const rootNode = tree.nodes["ROOT_NODE"];

    expect(rootNode.type).to.equal("STAT_BOOST");
    expect(rootNode.data.stat).to.equal("attack"); // Injected from config
    expect(rootNode.data.value).to.equal(2); // Tier 1 * 2
  });

  it("CoA 3: Should inject Active Skills based on Class Config", () => {
    const tree = factory.createTree(mockClassConfig);
    const childNode = tree.nodes["CHILD_NODE"];

    expect(childNode.type).to.equal("ACTIVE_SKILL");
    // Should resolve the full skill object from registry
    expect(childNode.data.name).to.equal("Fireball");
  });
});