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

import {
  LEGACY_PROJECT_RESOURCE_CANVAS_SECTIONS,
  PROJECT_RESOURCE_CANVAS_SECTIONS,
  type ProjectResourceCanvasCategory,
} from '../../../packages/shared/src/contracts/gameCreationApp';
import {
  LEGACY_RESOURCE_CANVAS_SECTION_TARGETS,
  normalizeResourceCanvasPosition,
  resolveResourceCanvasSection,
} from '../src/view/project-development/resourceCanvasSectionMapping';

function categoryByResourceId(category: ProjectResourceCanvasCategory) {
  return new Map<string, ProjectResourceCanvasCategory>([
    ['resource-1', category],
  ]);
}

describe('资源画布分区轴与新旧栏目映射', () => {
  it('现行分区为 6 类资产分类加末尾的项目版本栏目', () => {
    expect(PROJECT_RESOURCE_CANVAS_SECTIONS).toEqual([
      'ui-interaction',
      'character',
      'scene',
      'audio',
      'document',
      'unclassified',
      'version',
    ]);
  });

  it('每个旧栏目值都有归并目标，且目标都落在现行分区里', () => {
    for (const legacy of LEGACY_PROJECT_RESOURCE_CANVAS_SECTIONS) {
      const targets = LEGACY_RESOURCE_CANVAS_SECTION_TARGETS[legacy];
      expect(targets.length).toBeGreaterThan(0);
      for (const target of targets) {
        expect(PROJECT_RESOURCE_CANVAS_SECTIONS).toContain(target);
      }
    }
  });

  it('旧栏目坐标按资源当前分区归并，x / y / manuallyPlaced 原样保留', () => {
    const position = {
      resourceId: 'resource-1',
      section: 'art' as const,
      x: -24,
      y: 96,
      manuallyPlaced: true,
    };

    for (const legacy of LEGACY_PROJECT_RESOURCE_CANVAS_SECTIONS) {
      for (const target of LEGACY_RESOURCE_CANVAS_SECTION_TARGETS[legacy]) {
        const normalized = normalizeResourceCanvasPosition(
          { ...position, section: legacy },
          categoryByResourceId(target),
        );
        expect(normalized).toEqual({
          position: {
            resourceId: 'resource-1',
            section: target,
            x: -24,
            y: 96,
            manuallyPlaced: true,
          },
          changed: legacy !== target,
        });
      }
    }
  });

  it('旧 art 是扩展名口径，按资源当前分区落入四类资产栏目', () => {
    expect(LEGACY_RESOURCE_CANVAS_SECTION_TARGETS.art).toEqual([
      'ui-interaction',
      'character',
      'scene',
      'unclassified',
    ]);
    for (const target of LEGACY_RESOURCE_CANVAS_SECTION_TARGETS.art) {
      expect(resolveResourceCanvasSection('art', target)).toBe(target);
    }
    // 目标集合之外不猜、也不回落到别的栏目：宁可让这条坐标走自动排布，
    // 也不把资源放进它并不属于的栏目。
    expect(resolveResourceCanvasSection('art', 'document')).toBeNull();
  });

  it('旧 code 统一归入待归类', () => {
    expect(LEGACY_RESOURCE_CANVAS_SECTION_TARGETS.code).toEqual([
      'unclassified',
    ]);
    expect(resolveResourceCanvasSection('code', 'unclassified')).toBe(
      'unclassified',
    );
    expect(resolveResourceCanvasSection('code', 'document')).toBeNull();
  });

  it('新旧同名的旧值不产生额外写入，独有旧值改写后必然判定为变化', () => {
    for (const legacy of ['document', 'audio', 'version'] as const) {
      const normalized = normalizeResourceCanvasPosition(
        {
          resourceId: 'resource-1',
          section: legacy,
          x: 12,
          y: 34,
          manuallyPlaced: false,
        },
        categoryByResourceId(legacy),
      );
      expect(normalized?.position.section).toBe(legacy);
      expect(normalized?.changed).toBe(false);
    }

    for (const legacy of ['art', 'code'] as const) {
      const target = LEGACY_RESOURCE_CANVAS_SECTION_TARGETS[legacy][0]!;
      const normalized = normalizeResourceCanvasPosition(
        {
          resourceId: 'resource-1',
          section: legacy,
          x: 12,
          y: 34,
          manuallyPlaced: false,
        },
        categoryByResourceId(target),
      );
      expect(normalized?.position.section).toBe(target);
      expect(normalized?.changed).toBe(true);
    }
  });

  it('现役分区与资源分区不一致时归并到资源当前分类并保留坐标', () => {
    // 旧实现把"现行栏目值但不等于资源当前分类"判 null、整条坐标丢弃 —— 那等于把用户手摆的
    // 位置换成自动排布。资源分类本来就会变（`kind:"UI"` 的 8 条资产从「待归类」被修到
    // 「UI 交互」就是真机一例），所以这里必须归并，语义与旧栏目归并支路完全一致。
    expect(resolveResourceCanvasSection('scene', 'character')).toBe(
      'character',
    );
    expect(resolveResourceCanvasSection('version', 'document')).toBe(
      'document',
    );
    expect(
      normalizeResourceCanvasPosition(
        {
          resourceId: 'resource-1',
          section: 'scene',
          x: 0,
          y: 0,
          manuallyPlaced: true,
        },
        categoryByResourceId('character'),
      ),
    ).toEqual({
      position: {
        resourceId: 'resource-1',
        section: 'character',
        x: 0,
        y: 0,
        manuallyPlaced: true,
      },
      changed: true,
    });
  });

  it('归并到资源当前分类时 x / y / manuallyPlaced 逐项不被改写', () => {
    // 真机现场：`kind:"UI"` 资产落盘在「待归类」栏，分类被修到「UI 交互」之后
    // 它们的坐标必须跟过来，而不是被丢弃后由自动排布重算。
    expect(
      normalizeResourceCanvasPosition(
        {
          resourceId: 'resource-1',
          section: 'unclassified',
          x: -24,
          y: 96,
          manuallyPlaced: true,
        },
        categoryByResourceId('ui-interaction'),
      ),
    ).toEqual({
      position: {
        resourceId: 'resource-1',
        section: 'ui-interaction',
        x: -24,
        y: 96,
        manuallyPlaced: true,
      },
      changed: true,
    });
  });

  it('不猜测无法识别的分区取值和未知资源', () => {
    expect(resolveResourceCanvasSection('not-a-section', 'scene')).toBeNull();
    expect(resolveResourceCanvasSection(undefined, 'scene')).toBeNull();
    expect(resolveResourceCanvasSection(null, 'scene')).toBeNull();
    expect(
      normalizeResourceCanvasPosition(
        {
          resourceId: 'missing-resource',
          section: 'scene',
          x: 0,
          y: 0,
          manuallyPlaced: true,
        },
        new Map<string, ProjectResourceCanvasCategory>(),
      ),
    ).toBeNull();
  });
});