// 融资需求与货币供给 — 图表配置
import { palette as C } from './data'

const tipOpt = {
  backgroundColor: 'rgba(12,43,94,.94)',
  borderWidth: 0,
  textStyle: { color: '#fff', fontSize: 12 },
  padding: [8, 12],
  extraCssText: 'box-shadow:0 6px 18px rgba(12,43,94,.3);border-radius:6px;',
}

function axisStyle(opts = {}) {
  return {
    axisLine: { lineStyle: { color: '#E4E9F2' } },
    axisTick: { show: false },
    axisLabel: { color: C.mut, fontSize: 11 },
    splitLine: { lineStyle: { color: '#F2F5FA', type: 'dashed' } },
    ...opts,
  }
}

const sliceYM = (s) => s.map((x) => String(x[0]).slice(2, 7))

// ============== 图1 社融增速和M2增速 ==============
export function tsfM2LineOption(m2Series, tsfSeries) {
  const m2Map = new Map(m2Series.map((x) => [String(x[0]).slice(0, 10), x[1]]))
  const tsfMap = new Map(tsfSeries.map((x) => [String(x[0]).slice(0, 10), x[1]]))
  const cats = tsfSeries.map((x) => String(x[0]).slice(2, 7))
  return {
    tooltip: { ...tipOpt, trigger: 'axis' },
    legend: {
      data: ['社融存量同比', 'M2 同比'],
      top: 6, textStyle: { color: C.mut, fontSize: 11 }, itemWidth: 14, itemHeight: 8,
    },
    grid: { top: 32, left: 46, right: 18, bottom: 28 },
    xAxis: { type: 'category', data: cats, ...axisStyle({ axisLabel: { color: C.mut, fontSize: 10, hideOverlap: true } }) },
    yAxis: { type: 'value', name: '%', ...axisStyle() },
    series: [
      {
        name: '社融存量同比',
        type: 'line', smooth: true, showSymbol: false, symbol: 'circle', symbolSize: 5,
        data: tsfSeries.map((x) => x[1]),
        lineStyle: { color: C.brandD, width: 2.4 },
        itemStyle: { color: C.brandD },
        areaStyle: {
          type: 'linear', x: 0, y: 0, x2: 0, y2: 1,
          colorStops: [{ offset: 0, color: 'rgba(14,58,150,.14)' }, { offset: 1, color: 'rgba(14,58,150,0)' }],
        },
        markLine: { symbol: ['none', 'none'], data: [{ yAxis: 0, lineStyle: { color: C.faint, type: 'dashed', width: 1 } }], label: { show: false } },
      },
      {
        name: 'M2 同比',
        type: 'line', smooth: true, showSymbol: false, symbol: 'circle', symbolSize: 5,
        data: cats.map((_, i) => {
          const full = tsfSeries[i][0]
          return m2Map.get(String(full).slice(0, 10)) ?? null
        }),
        lineStyle: { color: C.warn, width: 2.2 },
        itemStyle: { color: C.warn },
        markLine: { symbol: ['none', 'none'], data: [{ yAxis: 0, lineStyle: { color: C.faint, type: 'dashed', width: 1 } }], label: { show: false } },
      },
    ],
  }
}

// ============== 图2 社融分项结构 ==============
const TSF_COLORS = ['#1552D0', '#7A4FCB', '#5B8DEF', '#0E3A96', '#E8912D', '#3DB389', '#E13B3B', '#6B7A96']
const TSF_LEGEND = ['人民币贷款', '外币贷款', '委托贷款', '信托贷款', '未贴现银行承兑汇票', '企业债券融资', '股票融资', '政府债券']
export function tsfStructureOption(d) {
  const cats = (d.categories || []).map((x) => String(x).slice(2, 7))
  const series = [
    { key: 'rmbLoan', name: '人民币贷款' },
    { key: 'fxLoan', name: '外币贷款' },
    { key: 'wtLoan', name: '委托贷款' },
    { key: 'xtxLoan', name: '信托贷款' },
    { key: 'wtzbpj', name: '未贴现银行承兑汇票' },
    { key: 'corpBond', name: '企业债券融资' },
    { key: 'equity', name: '股票融资' },
    { key: 'govBond', name: '政府债券' },
  ]
  return {
    tooltip: { ...tipOpt, trigger: 'axis', axisPointer: { type: 'shadow' } },
    legend: {
      data: TSF_LEGEND,
      top: 6, type: 'scroll', textStyle: { color: C.mut, fontSize: 11 }, itemWidth: 14, itemHeight: 8,
    },
    grid: { top: 32, left: 56, right: 18, bottom: 28 },
    xAxis: { type: 'category', data: cats, ...axisStyle({ axisLabel: { color: C.mut, fontSize: 10, hideOverlap: true } }) },
    yAxis: { type: 'value', name: '亿元', ...axisStyle() },
    series: series.map((s, idx) => ({
      name: s.name, type: 'bar', stack: 'tsf', data: d[s.key] || [],
      itemStyle: { color: TSF_COLORS[idx], borderRadius: idx === 0 ? [3, 3, 0, 0] : 0 },
      barWidth: 18,
    })),
  }
}

// ============== 图3 信贷分项结构 ==============
const LOAN_COLORS = ['#1552D0', '#E8912D', '#0E3A96', '#7A4FCB', '#189A65']
const LOAN_LEGEND = ['居民-短贷', '居民-中长贷', '企业-短贷', '企业-中长贷', '企业-票据融资']
export function loanStructureOption(d) {
  const cats = (d.categories || []).map((x) => String(x).slice(2, 7))
  const series = [
    { key: 'hhShort', name: '居民-短贷' },
    { key: 'hhMid', name: '居民-中长贷' },
    { key: 'corpShort', name: '企业-短贷' },
    { key: 'corpMid', name: '企业-中长贷' },
    { key: 'bill', name: '企业-票据融资' },
  ]
  return {
    tooltip: { ...tipOpt, trigger: 'axis', axisPointer: { type: 'shadow' } },
    legend: {
      data: LOAN_LEGEND,
      top: 6, type: 'scroll', textStyle: { color: C.mut, fontSize: 11 }, itemWidth: 14, itemHeight: 8,
    },
    grid: { top: 32, left: 56, right: 18, bottom: 28 },
    xAxis: { type: 'category', data: cats, ...axisStyle({ axisLabel: { color: C.mut, fontSize: 10, hideOverlap: true } }) },
    yAxis: { type: 'value', name: '亿元', ...axisStyle() },
    series: series.map((s, idx) => ({
      name: s.name, type: 'bar', stack: 'loan', data: d[s.key] || [],
      itemStyle: { color: LOAN_COLORS[idx], borderRadius: idx === 0 ? [3, 3, 0, 0] : 0 },
      barWidth: 18,
    })),
  }
}

// ============== 图4 近1年票据融资额 vs 10年国债（双 Y 轴） ==============
export function billVsBond10Option(d) {
  const cats = (d.categories || []).map((x) => String(x).slice(2, 7))
  return {
    tooltip: { ...tipOpt, trigger: 'axis' },
    legend: {
      data: [
        { name: '近1年票据融资额', itemStyle: { color: '#7A4FCB' } },
        '10年国债到期收益率',
      ],
      top: 6, type: 'scroll', textStyle: { color: C.mut, fontSize: 11 }, itemWidth: 14, itemHeight: 8,
    },
    grid: { top: 32, left: 56, right: 56, bottom: 28 },
    xAxis: { type: 'category', data: cats, ...axisStyle({ axisLabel: { color: C.mut, fontSize: 10, hideOverlap: true } }) },
    yAxis: [
      {
        type: 'value', name: '亿元', position: 'left',
        ...axisStyle({ nameTextStyle: { color: C.mut, fontSize: 10 }, nameGap: 14 }),
      },
      {
        type: 'value', name: '%', position: 'right',
        min: 0, max: 5,
        ...axisStyle({ nameTextStyle: { color: C.mut, fontSize: 10 }, nameGap: 14 }),
      },
    ],
    series: [
      {
        name: '近1年票据融资额', type: 'bar',
        data: d.bill12m || [],
        barWidth: 12,
        itemStyle: {
          color: (p) => ({
            type: 'linear', x: 0, y: 0, x2: 0, y2: 1,
            colorStops: [{ offset: 0, color: '#7A4FCB' }, { offset: 1, color: '#5B3DAE' }],
          }),
          borderRadius: [3, 3, 0, 0],
        },
        yAxisIndex: 0,
      },
      {
        name: '10年国债到期收益率', type: 'line', smooth: true,
        showSymbol: false, symbol: 'circle', symbolSize: 5,
        data: d.bond10 || [],
        yAxisIndex: 1,
        lineStyle: { color: C.warn, width: 2.4 },
        itemStyle: { color: C.warn },
        markLine: { symbol: ['none', 'none'], data: [{ yAxis: 0, lineStyle: { color: C.faint, type: 'dashed', width: 1 } }], label: { show: false } },
      },
    ],
  }
}

// ============== 图5 M1 同比 vs 10年国债（双 Y 轴） ==============
export function m1VsBond10Option(d) {
  const cats = (d.categories || []).map((x) => String(x).slice(2, 7))
  return {
    tooltip: { ...tipOpt, trigger: 'axis' },
    legend: {
      data: ['M1 同比', '10年国债到期收益率'],
      top: 6, textStyle: { color: C.mut, fontSize: 11 }, itemWidth: 14, itemHeight: 8,
    },
    grid: { top: 32, left: 46, right: 46, bottom: 28 },
    xAxis: { type: 'category', data: cats, ...axisStyle({ axisLabel: { color: C.mut, fontSize: 10, hideOverlap: true } }) },
    yAxis: [
      {
        type: 'value', name: '%', position: 'left',
        ...axisStyle({ nameTextStyle: { color: C.mut, fontSize: 10 }, nameGap: 14 }),
      },
      {
        type: 'value', name: '%', position: 'right',
        min: 0, max: 5,
        ...axisStyle({ nameTextStyle: { color: C.mut, fontSize: 10 }, nameGap: 14 }),
      },
    ],
    series: [
      {
        name: 'M1 同比', type: 'line', smooth: true,
        showSymbol: false, symbol: 'circle', symbolSize: 5,
        data: d.m1Yoy || [],
        lineStyle: { color: C.brandD, width: 2.4 },
        itemStyle: { color: C.brandD },
        areaStyle: {
          type: 'linear', x: 0, y: 0, x2: 0, y2: 1,
          colorStops: [{ offset: 0, color: 'rgba(14,58,150,.10)' }, { offset: 1, color: 'rgba(14,58,150,0)' }],
        },
        yAxisIndex: 0,
        markLine: { symbol: ['none', 'none'], data: [{ yAxis: 0, lineStyle: { color: C.faint, type: 'dashed', width: 1 } }], label: { show: false } },
      },
      {
        name: '10年国债到期收益率', type: 'line', smooth: true,
        showSymbol: false, symbol: 'circle', symbolSize: 5,
        data: d.bond10 || [],
        yAxisIndex: 1,
        lineStyle: { color: C.warn, width: 2.4 },
        itemStyle: { color: C.warn },
        markLine: { symbol: ['none', 'none'], data: [{ yAxis: 0, lineStyle: { color: C.faint, type: 'dashed', width: 1 } }], label: { show: false } },
      },
    ],
  }
}

export function latestOf(series) {
  if (!series || !series.length) return null
  const last = series[series.length - 1]
  return { value: last[1], date: last[0] }
}