import { describe, it, expect } from '@ohos/hypium';
import { VersionResolver, RemoteConfig, MatchKeys, VersionDecision } from 'domain_resource';

/**
 * 分层版本决策单测（T-M2-06，契约 §4.4）。纯函数，构造典型多层样例验证后层覆盖、
 * 两棵树取更高 version、showmessage 阻断。
 */
export default function versionResolverTest() {
  const keys: MatchKeys = { agentid: 'A1', channelid: 'C1', marketid: 'M1', gameid: 'G1' };

  describe('VersionResolver', () => {
    it('empty_config_zero_decision', 0, () => {
      const d: VersionDecision = VersionResolver.resolve({}, keys);
      expect(d.gameVersion).assertEqual(0);
      expect(d.appVersion).assertEqual(0);
      expect(d.showmessage).assertEqual('');
      expect(d.gameDownload).assertEqual('');
    });

    it('agent_tree_deeper_overrides', 0, () => {
      // 代理树：agent 设 game_version=10，market 覆盖为 20（深层覆盖浅层）
      const remote: RemoteConfig = {
        agentlist: [{
          agentid: 'A1', game_version: '10', game_download: 'a_url', game_size: '100',
          channellist: [{
            channelid: 'C1',
            marketlist: [{ marketid: 'M1', game_version: '20', game_download: 'm_url' }],
          }],
        }],
      };
      const d: VersionDecision = VersionResolver.resolve(remote, keys);
      expect(d.gameVersion).assertEqual(20);
      expect(d.gameDownload).assertEqual('m_url');
    });

    it('market_game_level_overrides', 0, () => {
      // market.gamelist 中 gameid 命中，覆盖到最深
      const remote: RemoteConfig = {
        agentlist: [{
          agentid: 'A1',
          channellist: [{
            channelid: 'C1',
            marketlist: [{
              marketid: 'M1', game_version: '20',
              gamelist: [{ gameid: 'G1', game_version: '30', game_download: 'g_url' }],
            }],
          }],
        }],
      };
      const d: VersionDecision = VersionResolver.resolve(remote, keys);
      expect(d.gameVersion).assertEqual(30);
      expect(d.gameDownload).assertEqual('g_url');
    });

    it('two_trees_take_higher_version', 0, () => {
      // 代理树 game_version=20，游戏树 game_version=25 → 取 25 及其下载地址
      const remote: RemoteConfig = {
        agentlist: [{ agentid: 'A1', game_version: '20', game_download: 'agent_url' }],
        gamelist: [{
          gameid: 'G1',
          agentlist: [{ agentid: 'A1', game_version: '25', game_download: 'game_url' }],
        }],
      };
      const d: VersionDecision = VersionResolver.resolve(remote, keys);
      expect(d.gameVersion).assertEqual(25);
      expect(d.gameDownload).assertEqual('game_url');
    });

    it('app_and_game_independent_winners', 0, () => {
      // app 升级取代理树(app_version=49)，game 升级取游戏树(game_version=30)
      const remote: RemoteConfig = {
        agentlist: [{ agentid: 'A1', app_version: '49', app_download: 'apk_url', game_version: '10' }],
        gamelist: [{
          gameid: 'G1',
          agentlist: [{ agentid: 'A1', app_version: '40', game_version: '30', game_download: 'g_url' }],
        }],
      };
      const d: VersionDecision = VersionResolver.resolve(remote, keys);
      expect(d.appVersion).assertEqual(49);
      expect(d.appDownload).assertEqual('apk_url');
      expect(d.gameVersion).assertEqual(30);
      expect(d.gameDownload).assertEqual('g_url');
    });

    it('no_match_returns_empty', 0, () => {
      const remote: RemoteConfig = {
        agentlist: [{ agentid: 'OTHER', game_version: '99', game_download: 'x' }],
      };
      const d: VersionDecision = VersionResolver.resolve(remote, keys);
      expect(d.gameVersion).assertEqual(0);
      expect(d.gameDownload).assertEqual('');
    });

    it('showmessage_from_layer_or_top', 0, () => {
      const top: RemoteConfig = { showmessage: '停服维护公告' };
      expect(VersionResolver.resolve(top, keys).showmessage).assertEqual('停服维护公告');
      const layer: RemoteConfig = {
        agentlist: [{ agentid: 'A1', showmessage: '代理层公告' }],
      };
      expect(VersionResolver.resolve(layer, keys).showmessage).assertEqual('代理层公告');
    });

    it('empty_string_does_not_override', 0, () => {
      // 深层空串不应覆盖浅层非空值
      const remote: RemoteConfig = {
        agentlist: [{
          agentid: 'A1', game_download: 'keep', game_version: '10',
          channellist: [{ channelid: 'C1', game_download: '' }],
        }],
      };
      const d: VersionDecision = VersionResolver.resolve(remote, keys);
      expect(d.gameDownload).assertEqual('keep');
    });
  });
}