import { readFile } from 'node:fs/promises';
import { createServer } from 'vite';

const storage = new Map();
globalThis.window = {
  localStorage: {
    getItem(key) {
      return storage.has(key) ? storage.get(key) : null;
    },
    setItem(key, value) {
      storage.set(key, String(value));
    },
    removeItem(key) {
      storage.delete(key);
    },
    clear() {
      storage.clear();
    }
  }
};

const server = await createServer({
  logLevel: 'error',
  server: { middlewareMode: true, hmr: false },
  appType: 'custom'
});

try {
  const memoryModule = await server.ssrLoadModule(
    '/src/game/data/firstPursuitScoutMemory.ts'
  );
  const campaignModule = await server.ssrLoadModule(
    '/src/game/state/campaignState.ts'
  );
  const { battleScenarios } = await server.ssrLoadModule(
    '/src/game/data/battles.ts'
  );

  verifyCanonicalIds(memoryModule);
  verifyValidChoices(memoryModule, campaignModule, battleScenarios);
  verifyInvalidMarkers(memoryModule, campaignModule, battleScenarios);
  verifyTargetIsolation(memoryModule, campaignModule, battleScenarios);
  await verifyCampSceneLiteralSync(memoryModule);

  console.log(
    'First-pursuit scout memory verification passed (canonical visit data, strict marker validation, target isolation, and CampScene literal sync).'
  );
} finally {
  await server.close();
}

function verifyCanonicalIds(memoryModule) {
  assert(
    memoryModule.firstPursuitScoutVisitId === 'first-pursuit-scout-tent',
    'The first-pursuit scout visit id must remain stable.'
  );
  assert(
    memoryModule.firstPursuitScoutSourceBattleId ===
      'first-battle-zhuo-commandery' &&
      memoryModule.firstPursuitScoutTargetBattleId ===
        'second-battle-yellow-turban-pursuit',
    'The scout memory must remain scoped from the first victory to the second battle.'
  );
  assert(
    JSON.stringify(memoryModule.firstPursuitScoutChoiceIds) ===
      JSON.stringify(['trace-river-ambush', 'mark-village-relief']),
    'The two canonical scout choice ids must remain stable and ordered.'
  );
}

function verifyValidChoices(memoryModule, campaignModule, battleScenarios) {
  const memories = memoryModule.firstPursuitScoutChoiceIds.map((choiceId) => {
    const campaign = createCompletedScoutCampaign(
      memoryModule,
      campaignModule,
      battleScenarios,
      choiceId
    );
    const memory = memoryModule.resolveFirstPursuitScoutMemory({
      campaign,
      battleId: memoryModule.firstPursuitScoutTargetBattleId
    });
    assert(
      memory?.visitId === memoryModule.firstPursuitScoutVisitId &&
        memory.choiceId === choiceId &&
        memory.choiceLabel.length > 0 &&
        memory.deploymentIntentPreview === true &&
        memory.campSummaryLine.startsWith('군영 준비 · ') &&
        memory.openingLines.length === 2 &&
        memory.openingLines[0] === memory.campSummaryLine,
      `A completed canonical choice must resolve a concise target-battle payoff: ${JSON.stringify(memory)}`
    );
    return memory;
  });

  assert(
    memories[0].campSummaryLine !== memories[1].campSummaryLine &&
      memories[0].openingLines[1] !== memories[1].openingLines[1],
    'Each scout choice must return distinct camp and opening guidance.'
  );

  memories[0].openingLines[0] = 'mutated outside resolver';
  const campaign = createCompletedScoutCampaign(
    memoryModule,
    campaignModule,
    battleScenarios,
    memoryModule.firstPursuitScoutChoiceIds[0]
  );
  const resolvedAgain = memoryModule.resolveFirstPursuitScoutMemory({
    campaign,
    battleId: memoryModule.firstPursuitScoutTargetBattleId
  });
  assert(
    resolvedAgain?.openingLines[0] === resolvedAgain?.campSummaryLine,
    'Resolved opening lines must be cloned instead of exposing canonical data.'
  );
}

function verifyInvalidMarkers(
  memoryModule,
  campaignModule,
  battleScenarios
) {
  const valid = createCompletedScoutCampaign(
    memoryModule,
    campaignModule,
    battleScenarios,
    memoryModule.firstPursuitScoutChoiceIds[0]
  );
  const sourceBattleId = memoryModule.firstPursuitScoutSourceBattleId;
  const targetBattleId = memoryModule.firstPursuitScoutTargetBattleId;
  const visitId = memoryModule.firstPursuitScoutVisitId;
  const cases = [
    {
      label: 'missing source settlement',
      mutate(campaign) {
        delete campaign.battleHistory[sourceBattleId];
      }
    },
    {
      label: 'source defeat',
      mutate(campaign) {
        campaign.battleHistory[sourceBattleId].outcome = 'defeat';
      }
    },
    {
      label: 'mismatched source settlement id',
      mutate(campaign) {
        campaign.battleHistory[sourceBattleId].battleId = targetBattleId;
      }
    },
    {
      label: 'missing visit completion',
      mutate(campaign) {
        campaign.completedCampVisits = [];
      }
    },
    {
      label: 'lookalike visit completion',
      mutate(campaign) {
        campaign.completedCampVisits = [`${visitId}-forged`];
      }
    },
    {
      label: 'missing choice marker',
      mutate(campaign) {
        delete campaign.campVisitChoiceIds[visitId];
      }
    },
    {
      label: 'unknown choice marker',
      mutate(campaign) {
        campaign.campVisitChoiceIds[visitId] = 'reveal-all-enemies';
      }
    },
    {
      label: 'choice stored under a forged visit key',
      mutate(campaign) {
        campaign.campVisitChoiceIds[`${visitId}-forged`] =
          campaign.campVisitChoiceIds[visitId];
        delete campaign.campVisitChoiceIds[visitId];
      }
    }
  ];

  cases.forEach(({ label, mutate }) => {
    const campaign = structuredClone(valid);
    mutate(campaign);
    const memory = memoryModule.resolveFirstPursuitScoutMemory({
      campaign,
      battleId: targetBattleId
    });
    assert(
      memory === undefined,
      `Invalid scout state (${label}) must not grant deployment intent preview: ${JSON.stringify(memory)}`
    );
  });
}

function verifyTargetIsolation(
  memoryModule,
  campaignModule,
  battleScenarios
) {
  const campaign = createCompletedScoutCampaign(
    memoryModule,
    campaignModule,
    battleScenarios,
    memoryModule.firstPursuitScoutChoiceIds[1]
  );
  const unrelatedBattleIds = [
    memoryModule.firstPursuitScoutSourceBattleId,
    'third-battle-guangzong-road'
  ];
  unrelatedBattleIds.forEach((battleId) => {
    const memory = memoryModule.resolveFirstPursuitScoutMemory({
      campaign,
      battleId
    });
    assert(
      memory === undefined,
      `Scout payoff must not leak from the second battle into ${battleId}.`
    );
  });
}

async function verifyCampSceneLiteralSync(memoryModule) {
  const source = await readFile(
    new URL('../src/game/scenes/CampScene.ts', import.meta.url),
    'utf8'
  );
  const visitsStart = source.indexOf(
    'const campVisits: CampVisitDefinition[] = ['
  );
  const visitStart = source.indexOf(
    `id: '${memoryModule.firstPursuitScoutVisitId}'`,
    visitsStart
  );
  assert(
    visitsStart >= 0 && visitStart > visitsStart,
    'CampScene must declare the canonical first-pursuit visit inside campVisits.'
  );

  const visitSource = source.slice(visitStart, visitStart + 2600);
  assert(
    /availableAfterBattleIds:\s*\[\s*campBattleIds\.first\s*\]/.test(
      visitSource
    ),
    'The canonical scout visit must be available immediately after the first battle.'
  );
  memoryModule.firstPursuitScoutChoiceIds.forEach((choiceId) => {
    assert(
      visitSource.includes(`id: '${choiceId}'`),
      `CampScene scout visit is missing canonical choice id ${choiceId}.`
    );
  });

  const campaign = createLiteralSyncCampaign(memoryModule);
  memoryModule.firstPursuitScoutChoiceIds.forEach((choiceId) => {
    campaign.campVisitChoiceIds[memoryModule.firstPursuitScoutVisitId] =
      choiceId;
    const memory = memoryModule.resolveFirstPursuitScoutMemory({
      campaign,
      battleId: memoryModule.firstPursuitScoutTargetBattleId
    });
    assert(
      visitSource.includes(`label: '${memory.choiceLabel}'`),
      `CampScene label for ${choiceId} must match the canonical memory label.`
    );
  });
}

function createCompletedScoutCampaign(
  memoryModule,
  campaignModule,
  battleScenarios,
  choiceId
) {
  storage.clear();
  campaignModule.resetCampaignState();
  const scenario =
    battleScenarios[memoryModule.firstPursuitScoutSourceBattleId];
  campaignModule.setFirstBattleReport({
    battleId: scenario.id,
    battleTitle: scenario.title,
    outcome: 'victory',
    turnNumber: 6,
    rewardGold: scenario.baseVictoryGold,
    defeatedEnemies: scenario.units.filter(
      (unit) => unit.faction === 'enemy'
    ).length,
    totalEnemies: scenario.units.filter(
      (unit) => unit.faction === 'enemy'
    ).length,
    objectives: [],
    units: scenario.units,
    bonds: scenario.bonds.map((bond) => ({ ...bond, battleExp: 0 })),
    itemRewards: [],
    completedCampDialogues: [],
    completedCampVisits: [],
    createdAt: '2026-07-27T00:00:00.000Z'
  });
  const updated = campaignModule.applyCampVisitReward(
    memoryModule.firstPursuitScoutVisitId,
    {},
    choiceId
  );
  assert(
    updated,
    `Campaign state must accept canonical scout choice ${choiceId}.`
  );
  return campaignModule.getCampaignState();
}

function createLiteralSyncCampaign(memoryModule) {
  return {
    battleHistory: {
      [memoryModule.firstPursuitScoutSourceBattleId]: {
        battleId: memoryModule.firstPursuitScoutSourceBattleId,
        outcome: 'victory'
      }
    },
    completedCampVisits: [memoryModule.firstPursuitScoutVisitId],
    campVisitChoiceIds: {}
  };
}

function assert(condition, message) {
  if (!condition) {
    throw new Error(message);
  }
}