import type { Listing } from '@/features/listings/api/listings'

export interface ListingDisplayChip {
  label: string
  value: string
}

export interface ListingDisplayResource {
  key: string
  label: string
  price: string
  quantity: number
  mode: string
  amount: number
}

export function getCoinWan(item: Listing) {
  return Math.round(Number(item.haf_coin_amount || 0) / 10000)
}

export function getCoinM(item: Listing) {
  return getCoinWan(item) / 100
}

export function formatListingCode(item: Listing) {
  if (item.listing_no) return item.listing_no
  return `SP${String(item.id).padStart(6, '0')}`
}

export function formatHafCoinM(amountWan: number) {
  const amountM = amountWan / 100
  const rounded = Math.round(amountM * 10) / 10
  return `${Number.isInteger(rounded) ? rounded : rounded.toFixed(1)}M`
}

export function getListingDisplayPrice(item: Listing) {
  return Number(item.price || 0)
}

export function getListingRentPrice(item: Listing) {
  const buyerCoinBasePrice = readPriceBreakdownNumber(item, 'buyer_coin_base_price')
  if (buyerCoinBasePrice > 0) return roundMoney(buyerCoinBasePrice)
  return Math.max(0, roundMoney(getListingDisplayPrice(item) - getListingConsumablePrice(item)))
}

export function getListingConsumablePrice(item: Listing) {
  const consumablePrice = readPriceBreakdownNumber(item, 'consumable_price')
  if (consumablePrice > 0) return roundMoney(consumablePrice)
  return getListingResources(item).reduce((sum, resource) => sum + resource.amount, 0)
}

export function getListingSellerPrice(item: Listing) {
  const priceBreakdown = item.asset_summary?.price_breakdown
  if (typeof priceBreakdown === 'object' && priceBreakdown !== null) {
    const price = readUnknownNumber((priceBreakdown as Record<string, unknown>).seller_total_price)
    if (price > 0) return price
  }
  return getListingDisplayPrice(item)
}

export function getRatioValue(item: Listing) {
  const ratio = readAssetNumber(item, 'publish_ratio')
  if (ratio > 0) return ratio
  const price = getListingDisplayPrice(item)
  if (price <= 0) return 0
  return getCoinWan(item) / price
}

export function formatRatio(item: Listing) {
  const ratio = getRatioValue(item)
  return ratio > 0 ? `1:${formatRatioNumber(ratio)}` : '--'
}

export function getValuePerYuanText(item: Listing) {
  return formatRatio(item)
}

export function getLoginMethod(item: Listing) {
  return item.login_platform.trim()
}

export function getServerRegion(item: Listing) {
  return item.server_region.trim()
}

export function getListingTitle(item: Listing) {
  const parts = [
    `纯币${formatHafCoinM(getCoinWan(item))}`,
    formatInsuranceSlotText(readAssetString(item, 'season_insurance')),
    formatLevelShort(readAssetString(item, 'stamina_level'), '体'),
    formatLevelShort(readAssetString(item, 'load_level'), '负'),
    formatResourceShort(item, 'armor6', '六甲'),
    formatResourceShort(item, 'helmet6', '六头'),
    ...getSkinNames(item).slice(0, 4),
  ].filter(Boolean)
  return parts.join('/')
}

export function getListingSubtitle(item: Listing) {
  return getValuePerYuanText(item)
}

export function getListingChips(item: Listing): ListingDisplayChip[] {
  const totalAsset = readAssetNumber(item, 'total_asset_wan')
  const chips: ListingDisplayChip[] = [
    { label: '哈夫币', value: formatHafCoinM(getCoinWan(item)) },
    { label: '保险格数', value: readAssetString(item, 'season_insurance') },
    { label: '体力', value: readAssetString(item, 'stamina_level') },
    { label: '负重', value: readAssetString(item, 'load_level') },
    { label: '段位', value: item.rank_level },
  ]
  const awmAmmo = getResourceQuantity(item, 'awmAmmo')
  if (awmAmmo > 0) {
    chips.push({ label: 'AWM', value: `${awmAmmo}发` })
  }
  if (totalAsset > 0) {
    chips.push({ label: '总资产', value: formatHafCoinM(totalAsset) })
  }
  const online = getOnlineTimeText(item)
  if (online) {
    chips.push({ label: '方便上号', value: online })
  }
  return chips.filter(chip => chip.value)
}

export function getListingResources(item: Listing): ListingDisplayResource[] {
  const resources = item.asset_summary?.resources
  if (!Array.isArray(resources)) return []
  return resources
    .map(resource => {
      if (typeof resource !== 'object' || resource === null) return null
      const row = resource as Record<string, unknown>
      return {
        key: typeof row.key === 'string' ? row.key : '',
        label: typeof row.label === 'string' ? row.label : '',
        price: typeof row.price === 'string' ? row.price : '',
        quantity: readUnknownNumber(row.quantity),
        mode: typeof row.mode === 'string' ? row.mode : '',
        amount:
          row.mode === '收费'
            ? roundMoney(
                readUnknownNumber(row.quantity) *
                  readUnitPrice(typeof row.price === 'string' ? row.price : '')
              )
            : 0,
      }
    })
    .filter((resource): resource is ListingDisplayResource => {
      return Boolean(resource?.key && resource.label && resource.quantity > 0)
    })
}

export function getResourceQuantity(item: Listing, resourceKey: string) {
  return getListingResources(item).find(resource => resource.key === resourceKey)?.quantity || 0
}

export function hasGiftResources(item: Listing) {
  return getListingResources(item).some(resource => resource.mode === '赠送')
}

export function hasAcceleratedSaleRatio(item: Listing) {
  if (item.is_accelerated_sale) return true

  const priceBreakdown = item.asset_summary?.price_breakdown
  if (typeof priceBreakdown !== 'object' || priceBreakdown === null) return false

  const row = priceBreakdown as Record<string, unknown>
  const referenceRatio = readUnknownNumber(row.seller_reference_ratio)
  const sellerRatio = readUnknownNumber(row.seller_ratio)
  const acceleratedRatio = readUnknownNumber(row.accelerated_sale_ratio)

  if (referenceRatio <= 0) return false
  return sellerRatio > referenceRatio || acceleratedRatio > referenceRatio
}

export function getSkinGroup(item: Listing, groupKey: string) {
  const skinGroups = item.asset_summary?.skin_groups
  if (
    typeof skinGroups !== 'object' ||
    skinGroups === null ||
    !Array.isArray((skinGroups as Record<string, unknown>)[groupKey])
  ) {
    return []
  }
  return ((skinGroups as Record<string, unknown>)[groupKey] as unknown[]).filter(
    (skin): skin is string => typeof skin === 'string'
  )
}

export function getSkinNames(item: Listing) {
  const skinGroups = item.asset_summary?.skin_groups
  if (typeof skinGroups !== 'object' || skinGroups === null) return []
  return Object.values(skinGroups as Record<string, unknown>)
    .flatMap(group => (Array.isArray(group) ? group : []))
    .filter((skin): skin is string => typeof skin === 'string')
}

export function assetRegions(item: Listing) {
  const regions = item.asset_summary?.common_regions
  return Array.isArray(regions)
    ? regions.filter((region): region is string => typeof region === 'string')
    : []
}

export function getOnlineTimeText(item: Listing) {
  const onlineTime = item.asset_summary?.online_time
  if (typeof onlineTime !== 'object' || onlineTime === null) return ''
  const start = (onlineTime as Record<string, unknown>).start
  const end = (onlineTime as Record<string, unknown>).end
  if (typeof start !== 'string' || typeof end !== 'string' || !start || !end) return ''
  if (start === '全天' || end === '全天' || (start === '00:00' && end === '23:59')) return '全天'
  return `${start.replace(':00', '')}-${end.replace(':00', '')}点`
}

export function getDailyLoss(item: Listing) {
  const dailyLossM = getDailyLossM(item)
  return dailyLossM > 0 ? `${formatCompactNumber(dailyLossM)}M` : ''
}

export function getDailyLossM(item: Listing) {
  const configuredLoss = readAssetNumber(item, 'daily_loss_m')
  if (configuredLoss > 0) return configuredLoss
  return 0
}

export function getEstimatedRentalDays(item: Listing) {
  const coinM = getCoinM(item)
  const dailyLossM = getDailyLossM(item)
  if (coinM <= 0 || dailyLossM <= 0) return 0
  return coinM / dailyLossM
}

export function formatEstimatedRentalDuration(item: Listing) {
  const days = getEstimatedRentalDays(item)
  if (days <= 0) return '--'
  return `${Math.max(1, Math.round(days))}天`
}

export function readAssetString(item: Listing, key: string) {
  const value = item.asset_summary?.[key]
  return typeof value === 'string' ? value : ''
}

export function readAssetNumber(item: Listing, key: string) {
  return readUnknownNumber(item.asset_summary?.[key])
}

function readUnknownNumber(value: unknown) {
  if (typeof value === 'number') return value
  if (typeof value === 'string' && value.trim()) {
    const parsed = Number(value)
    return Number.isFinite(parsed) ? parsed : 0
  }
  return 0
}

function readPriceBreakdownNumber(item: Listing, key: string) {
  const priceBreakdown = item.asset_summary?.price_breakdown
  if (typeof priceBreakdown !== 'object' || priceBreakdown === null) return 0
  return readUnknownNumber((priceBreakdown as Record<string, unknown>)[key])
}

function readUnitPrice(priceText: string) {
  const normalized = priceText.replace(/，/g, ',').trim()
  const fractionMatch = normalized.match(/(\d+(?:\.\d+)?)\s*元\s*\/\s*(\d+(?:\.\d+)?)/)
  if (fractionMatch) {
    const amount = Number(fractionMatch[1])
    const count = Number(fractionMatch[2])
    return count > 0 ? amount / count : 0
  }
  const singleMatch = normalized.match(/(\d+(?:\.\d+)?)\s*元/)
  return singleMatch ? Number(singleMatch[1]) : 0
}

function formatInsuranceSlotText(value: string) {
  const parts = value.split('*').map(item => Number(item))
  const rows = parts[0] || 0
  const cols = parts[1] || 0
  if (!Number.isFinite(rows) || !Number.isFinite(cols) || rows <= 0 || cols <= 0) {
    return value
  }
  return `${rows * cols}格`
}

function formatLevelShort(value: string, suffix: string) {
  const level = value.match(/\d+/)?.[0]
  return level ? `${level}${suffix}` : value
}

function formatResourceShort(item: Listing, key: string, label: string) {
  const quantity = getResourceQuantity(item, key)
  return quantity > 0 ? `${quantity}${label}` : ''
}

function roundMoney(value: number) {
  return Math.round(value * 100) / 100
}

function formatRatioNumber(value: number) {
  const rounded = roundMoney(value)
  return rounded.toFixed(1)
}

function formatCompactNumber(value: number) {
  const rounded = Math.round(value * 10) / 10
  return Number.isInteger(rounded) ? `${rounded}` : rounded.toFixed(1)
}