/**
 * Portfolio game — temporary SQLite only.
 */
import assert from 'node:assert/strict'
import { mkdtempSync, rmSync } from 'node:fs'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { ValidationPipe } from '@nestjs/common'
import { Test } from '@nestjs/testing'
import { FastifyAdapter, NestFastifyApplication } from '@nestjs/platform-fastify'
import { ApiExceptionFilter } from '../src/common/filters/api-exception.filter'
import { gradePortfolioSubmission } from '../src/gold-land/portfolio/portfolio.grader'
import { simulatePortfolio } from '../src/gold-land/portfolio/portfolio.math'
import { GoldLandProgressionService } from '../src/gold-land/services/progression.service'
import type { DatabaseService } from '../src/database/database.service'
import { createDefaultUserState } from '../src/shared/catalog/default-user-state'

const USER = 'portfolio-test-user'
const testDir = mkdtempSync(join(tmpdir(), 'gold-land-portfolio-'))
process.env.DB_PATH = join(testDir, 'test.db')
process.env.NODE_ENV = 'test'
process.env.PORT = '3996'
process.env.JWT_SECRET = 'gold-land-dev-secret-change-in-production'

const correctQuestions = [
  { questionId: 'q-one', answerId: 'depend' },
  { questionId: 'q-loss', answerId: 'no' },
  { questionId: 'q-name', answerId: 'no' },
  { questionId: 'q-best', answerId: 'no' },
  { questionId: 'q-approach', answerId: 'balanced' },
]
const wrongIds = ['safe', 'yes', 'yes', 'yes', 'count']

function mix(holding: { sun: number; rain: number; wind: number }, count: number) {
  return [
    { questionId: 'portfolio', holdings: holding },
    ...correctQuestions.map((answer, index) =>
      index < count ? answer : { questionId: answer.questionId, answerId: wrongIds[index] ?? 'safe' },
    ),
  ]
}

function scenario(holding: { sun: number; rain: number; wind: number }, id: string) {
  const found = simulatePortfolio(holding).find((item) => item.id === id)
  assert.ok(found)
  return found
}

async function createApp(): Promise<NestFastifyApplication> {
  const { AppModule } = await import('../src/app.module')
  const moduleRef = await Test.createTestingModule({ imports: [AppModule] }).compile()
  const app = moduleRef.createNestApplication<NestFastifyApplication>(new FastifyAdapter())
  app.useGlobalPipes(new ValidationPipe({ transform: true, whitelist: true, forbidNonWhitelisted: true }))
  app.useGlobalFilters(new ApiExceptionFilter())
  await app.init()
  await app.getHttpAdapter().getInstance().ready()
  return app
}

async function run() {
  const concentrated = { sun: 100, rain: 0, wind: 0 }
  const split = { sun: 40, rain: 30, wind: 30 }
  const other = { sun: 20, rain: 50, wind: 30 }

  assert.deepEqual(
    [scenario(concentrated, 'sunny').total, scenario(concentrated, 'rainy').total, scenario(concentrated, 'drop').total],
    [120, 80, 90],
  )
  assert.equal(scenario(concentrated, 'sunny').changeLabel, 'سود 20 سکه')
  assert.equal(scenario(concentrated, 'rainy').changeLabel, 'زیان 20 سکه')
  assert.deepEqual(
    [scenario(split, 'sunny').total, scenario(split, 'rainy').total, scenario(split, 'drop').total],
    [105, 95, 90],
  )
  assert.equal(scenario(split, 'sunny').changeLabel, 'سود 5 سکه')
  assert.equal(scenario(split, 'rainy').changeLabel, 'زیان 5 سکه')
  assert.deepEqual(
    [scenario(other, 'sunny').total, scenario(other, 'rainy').total, scenario(other, 'drop').total],
    [99, 101, 90],
  )
  for (const holding of [concentrated, split, other]) {
    const drop = scenario(holding, 'drop')
    assert.equal(drop.total, 90)
    assert.equal(drop.changeLabel, 'زیان 10 سکه')
  }

  assert.equal(gradePortfolioSubmission(mix(concentrated, 0)).score, 0)
  assert.equal(gradePortfolioSubmission(mix(split, 2)).score, 40)
  assert.equal(gradePortfolioSubmission(mix(other, 3)).score, 60)
  assert.equal(gradePortfolioSubmission(mix(concentrated, 4)).score, 80)
  assert.equal(gradePortfolioSubmission(mix(split, 5)).score, 100)
  assert.equal(gradePortfolioSubmission(mix(concentrated, 5)).score, 100)
  assert.throws(() => gradePortfolioSubmission(mix({ sun: 90, rain: 0, wind: 0 }, 5)))
  assert.throws(() => gradePortfolioSubmission(mix({ sun: 12, rain: 44, wind: 44 }, 5)))
  assert.throws(() => gradePortfolioSubmission(mix({ sun: -10, rain: 60, wind: 50 }, 5)))
  assert.throws(() =>
    gradePortfolioSubmission([{ questionId: 'portfolio', holdings: { sun: 100, rain: 0, wind: 0, gold: 0 } as never }, ...correctQuestions]),
  )
  assert.throws(() => gradePortfolioSubmission([...mix(split, 5), correctQuestions[0]!]))
  assert.throws(() =>
    gradePortfolioSubmission(mix(split, 5).map((answer, index) => (index === 1 ? { ...answer, answerId: 'nope' } : answer))),
  )

  const app = await createApp()
  const database = app.get((await import('../src/database/database.service')).DatabaseService) as DatabaseService
  const progression = app.get(GoldLandProgressionService)
  const db = database.getDb()

  try {
    const now = new Date().toISOString()
    db.prepare('INSERT INTO users (id, state_json, updated_at) VALUES (?, ?, ?)').run(
      USER,
      JSON.stringify(createDefaultUserState(USER)),
      now,
    )
    const insert = db.prepare(`
      INSERT INTO user_level_progress (
        user_id, level_id, best_score, stars, attempts_count, started_at, completed_at, updated_at
      ) VALUES (?, ?, 80, 2, 1, ?, ?, ?)
    `)
    for (let id = 1; id <= 7; id += 1) insert.run(USER, id, now, now, now)
    assert.throws(() => progression.startLevel(USER, 9))
    insert.run(USER, 8, now, now, now)
    assert.equal(progression.buildLevelItems(USER).find((level) => level.id === 9)?.status, 'available')
    assert.equal(progression.buildLevelItems(USER).find((level) => level.id === 10)?.status, 'locked')

    const detail = progression.getGoldLandLevel(USER, 9)
    const payload = JSON.stringify(detail.activity)
    assert.equal(payload.includes('correctOptionId'), false)
    assert.equal(payload.includes('آفتاب'), true)

    assert.throws(() => progression.completeLevel(USER, 9, { answers: mix(split, 2) }))
    const first = progression.completeLevel(USER, 9, { answers: mix(concentrated, 3) })
    assert.equal(first.score, 60)
    assert.equal(first.stars, 1)
    assert.equal(first.reward.xp, 50 + 5)
    assert.equal(first.reward.coins, 20 + 3)
    const replay = progression.completeLevel(USER, 9, { answers: mix(split, 3) })
    assert.equal(replay.score, 60)
    assert.equal(replay.reward.xp, 0)
    assert.equal(replay.reward.coins, 0)
    const improved = progression.completeLevel(USER, 9, { answers: mix(other, 5) })
    assert.equal(improved.score, 100)
    assert.equal(improved.stars, 3)
    assert.equal(improved.reward.xp, 10)
    assert.equal(improved.reward.coins, 6)
    assert.equal(progression.buildLevelItems(USER).find((level) => level.id === 10)?.status, 'available')
    assert.equal(progression.buildLevelItems(USER).find((level) => level.id === 11)?.status, 'locked')

    const parallelId = 'portfolio-parallel-user'
    db.prepare('INSERT INTO users (id, state_json, updated_at) VALUES (?, ?, ?)').run(
      parallelId,
      JSON.stringify(createDefaultUserState(parallelId)),
      now,
    )
    for (let id = 1; id <= 8; id += 1) insert.run(parallelId, id, now, now, now)
    const { JwtService } = await import('@nestjs/jwt')
    const token = app.get(JwtService).sign({ userId: parallelId })
    const body = { answers: mix(split, 5) }
    const [left, right] = await Promise.all([
      app.inject({ method: 'POST', url: '/api/gold-land/levels/9/complete', headers: { authorization: `Bearer ${token}` }, payload: body }),
      app.inject({ method: 'POST', url: '/api/gold-land/levels/9/complete', headers: { authorization: `Bearer ${token}` }, payload: body }),
    ])
    assert.equal(left.statusCode, 200)
    assert.equal(right.statusCode, 200)
    const bodies = [left, right].map((response) => JSON.parse(response.payload) as { reward: { xp: number; coins: number } })
    assert.equal(bodies.reduce((sum, item) => sum + item.reward.coins, 0), 20 + 9)
    assert.equal(bodies.reduce((sum, item) => sum + item.reward.xp, 0), 50 + 15)
    const keys = db.prepare('SELECT reward_key FROM reward_ledger WHERE user_id = ? ORDER BY reward_key').all(parallelId) as Array<{ reward_key: string }>
    assert.deepEqual(keys.map((row) => row.reward_key), [
      'level:9:first-completion',
      'level:9:star:1',
      'level:9:star:2',
      'level:9:star:3',
    ])

    const bad = await app.inject({
      method: 'POST',
      url: '/api/gold-land/levels/9/complete',
      headers: { authorization: `Bearer ${token}` },
      payload: { answers: [{ questionId: 'portfolio', holdings: { sun: 50, rain: 50 } }] },
    })
    assert.equal(bad.statusCode, 400)

    console.log('portfolio tests passed')
  } finally {
    await app.close()
    try {
      rmSync(testDir, { recursive: true, force: true })
    } catch {
      // ignore
    }
  }
}

run().catch((error) => {
  console.error(error)
  process.exit(1)
})