import { computed, type Ref } from 'vue'

import type { ChargeMode, ListingPublishOptions, PublishSalePriceConfig, QuantityKey, ScreenshotKey } from '@/api/listingOptions'
import type { PublishForm } from '@/types/publish'
import {
  buildDepositBreakdownItems,
  calculateConsumablePrice,
  calculateDailyLossRatioAdjustment,
  calculatePlatformPricing,
  calculateRecommendedDeposit,
  calculateSellerReferenceRatio,
  formatNumber,
  hasAcceleratedSaleRatioInput as hasAcceleratedSaleRatioValue,
  isQuantityItemDisabledForInsurance,
  readFinalSaleRatio,
  roundMoney,
  roundRatio,
} from '@/utils/pricing'

export function usePricingCalculator(options: {
  publishOptions: Ref<ListingPublishOptions>
  salePriceConfig: Ref<PublishSalePriceConfig>
  form: PublishForm
  quantityValues: Record<QuantityKey, number>
  quantityModes: Record<QuantityKey, ChargeMode>
  screenshotFiles: Record<ScreenshotKey, string>
  selectedSkins: Ref<string[]>
}) {
  const serverOptions = computed(() => options.publishOptions.value.server_options)
  const faceOptions = computed(() => options.publishOptions.value.face_options)
  const rankOptions = computed(() => options.publishOptions.value.rank_options)
  const insuranceOptions = computed(() => options.publishOptions.value.insurance_options)
  const levelOptions = computed(() => options.publishOptions.value.level_options)
  const loginMethodOptions = computed(() => options.publishOptions.value.login_method_options)
  const regionOptions = computed(() => options.publishOptions.value.region_options)
  const banRecordOptions = computed(() => options.publishOptions.value.ban_record_options)
  const banEvidenceOptions = computed(() => options.publishOptions.value.ban_evidence_options)
  const skinGroups = computed(() => options.publishOptions.value.skin_groups)
  const quantityItems = computed(() => options.publishOptions.value.quantity_items)
  const screenshotSlots = computed(() => options.publishOptions.value.screenshot_slots)
  const priceConfig = computed(() => options.publishOptions.value.price_config)
  const depositRecommendConfig = computed(() => options.publishOptions.value.deposit_recommend_config)
  const fireLevelMin = computed(() => options.publishOptions.value.fire_level_min || 38)
  const fireLevelPlaceholder = computed(() => `等级低于${fireLevelMin.value}级的号无法发布`)
  const coinMAmount = computed(() => Number(options.form.haf_coin_amount || 0))
  const coinWanAmount = computed(() => coinMAmount.value * 100)
  const dailyLossMAmount = computed(() => Number(options.form.daily_loss_m || 10))
  const dailyLossRatioAdjustment = computed(() => calculateDailyLossRatioAdjustment(dailyLossMAmount.value))
  const screenshotUrls = computed(() =>
    screenshotSlots.value.map((item) => options.screenshotFiles?.[item.key]).filter((url): url is string => Boolean(url)),
  )

  function hasAcceleratedSaleRatioInput() {
    return hasAcceleratedSaleRatioValue(options.form.accelerated_sale_ratio)
  }

  function isQuantityItemDisabled(item: { key: string; label: string }) {
    return isQuantityItemDisabledForInsurance(item, options.form.season_insurance)
  }

  const calculatedSellerReferenceRatio = computed(() =>
    calculateSellerReferenceRatio({
      coinMAmount: coinMAmount.value,
      form: options.form,
      ratioConfig: options.publishOptions.value.ratio_config,
      skinGroups: skinGroups.value,
      selectedSkins: options.selectedSkins.value,
      levelOptions: levelOptions.value,
      dailyLossRatioAdjustment: dailyLossRatioAdjustment.value,
    }),
  )
  const calculatedDefaultSaleRatio = computed(() => calculatedSellerReferenceRatio.value)
  const maxAcceleratedSaleRatio = computed(() =>
    calculatedDefaultSaleRatio.value > 0 ? roundRatio(calculatedDefaultSaleRatio.value + 10) : 0,
  )
  const calculatedRatio = computed(() =>
    readFinalSaleRatio(
      calculatedDefaultSaleRatio.value,
      options.form.accelerated_sale_ratio,
      maxAcceleratedSaleRatio.value,
    ),
  )
  const calculatedCoinBasePrice = computed(() => {
    if (calculatedRatio.value <= 0) return 0
    return roundMoney(coinWanAmount.value / calculatedRatio.value)
  })
  const calculatedConsumablePrice = computed(() =>
    calculateConsumablePrice({
      quantityItems: quantityItems.value,
      quantityValues: options.quantityValues,
      quantityModes: options.quantityModes,
      seasonInsurance: options.form.season_insurance,
    }),
  )
  const calculatedSellerPrice = computed(() =>
    calculatedRatio.value > 0 ? roundMoney(calculatedCoinBasePrice.value + calculatedConsumablePrice.value) : 0,
  )
  const calculatedPlatformPricing = computed(() =>
    calculatePlatformPricing({
      coinMAmount: coinMAmount.value,
      coinWanAmount: coinWanAmount.value,
      sellerRatio: calculatedRatio.value,
      sellerCoinBasePrice: calculatedCoinBasePrice.value,
      sellerTotalPrice: calculatedSellerPrice.value,
      consumablePrice: calculatedConsumablePrice.value,
      salePriceConfig: options.salePriceConfig.value,
    }),
  )
  const calculatedFinalPrice = computed(() => calculatedPlatformPricing.value.buyerTotalPrice)
  const calculatedRatioText = computed(() => (calculatedRatio.value > 0 ? `1:${formatNumber(calculatedRatio.value)}` : '--'))
  const calculatedDefaultSaleRatioText = computed(() =>
    calculatedDefaultSaleRatio.value > 0 ? `1:${formatNumber(calculatedDefaultSaleRatio.value)}` : '--',
  )
  const saleRatioRangeText = computed(() => {
    if (calculatedDefaultSaleRatio.value <= 0) return '完成基础信息后自动计算参考比例'
    return `可设置 1:${formatNumber(calculatedDefaultSaleRatio.value)} ~ 1:${formatNumber(maxAcceleratedSaleRatio.value)}`
  })
  const acceleratedSaleRatioPlaceholder = computed(() => {
    if (calculatedDefaultSaleRatio.value <= 0) return '填写资料后自动生成可设置范围'
    return `默认 ${formatNumber(calculatedDefaultSaleRatio.value)}，最高 ${formatNumber(maxAcceleratedSaleRatio.value)}`
  })
  const recommendedDepositAmount = computed(() =>
    calculateRecommendedDeposit({
      depositRecommendConfig: depositRecommendConfig.value,
      skinGroups: skinGroups.value,
      selectedSkins: options.selectedSkins.value,
    }),
  )
  const depositBreakdownItems = computed(() =>
    buildDepositBreakdownItems({
      depositRecommendConfig: depositRecommendConfig.value,
      skinGroups: skinGroups.value,
      selectedSkins: options.selectedSkins.value,
    }),
  )
  const platformRuleLabel = computed(() => {
    const labels: Record<string, string> = {
      fixed_markup: '固定加价',
      ratio_subtract: '比例修正',
      none: '无加价',
    }
    return labels[calculatedPlatformPricing.value.ruleType] || calculatedPlatformPricing.value.ruleType
  })
  const publishTitle = computed(() => {
    const parts = [
      options.form.server_region,
      options.form.rank_level,
      coinMAmount.value ? `${coinMAmount.value}M哈夫币` : '',
    ].filter(Boolean)
    return parts.length ? parts.join(' ') : '待完善账号信息'
  })

  return {
    serverOptions,
    faceOptions,
    rankOptions,
    insuranceOptions,
    levelOptions,
    loginMethodOptions,
    regionOptions,
    banRecordOptions,
    banEvidenceOptions,
    skinGroups,
    quantityItems,
    screenshotSlots,
    priceConfig,
    depositRecommendConfig,
    fireLevelMin,
    fireLevelPlaceholder,
    coinMAmount,
    coinWanAmount,
    dailyLossMAmount,
    dailyLossRatioAdjustment,
    screenshotUrls,
    calculatedSellerReferenceRatio,
    calculatedDefaultSaleRatio,
    maxAcceleratedSaleRatio,
    calculatedRatio,
    calculatedCoinBasePrice,
    calculatedConsumablePrice,
    calculatedSellerPrice,
    calculatedPlatformPricing,
    calculatedFinalPrice,
    calculatedRatioText,
    calculatedDefaultSaleRatioText,
    saleRatioRangeText,
    acceleratedSaleRatioPlaceholder,
    recommendedDepositAmount,
    depositBreakdownItems,
    platformRuleLabel,
    publishTitle,
    hasAcceleratedSaleRatioInput,
    isQuantityItemDisabled,
  }
}