import type { AnalysisContext } from '../types/analysis'
import { getAnalysisDefinition } from '../config/analysis-config'
import {
  buildAeMonthlyByOccurrence,
  buildComplaintPareto,
  buildComplianceMatching,
  buildGlobalMonthlyPpm,
  buildInjuryDeviceMatrix,
  buildProvinceAeCounts,
  buildPsurTopProducts,
  buildReportingLagDays,
  buildSaeMonthlyByOccurrence,
  buildSaeShareMonthly,
  buildTopDeviceFailures,
  isSaeRecord,
} from './aggregate'
import {
  buildBatchComplaintVsAeCounts,
  buildComplaintBatchTop,
  buildComplaintCloseCycleDays,
  buildComplaintMonthly,
  buildCompensationDist,
  buildDefectConfirmedProductFault,
  buildFaultByRegisterMonthMatrix,
  buildHospitalAeVsAdmissionScatter,
  buildHospitalComplaintVsAdmissionQty,
  buildHospitalProductComplaintRate,
  buildInvestigationConclusionDist,
  buildIsAeRateByProduct,
  buildProductComplaintHalfYearGrowth,
  buildProvinceComplaintHalfYearGrowth,
  buildTopFaultTypes,
  buildTopHospitalsComplaints,
  buildTopProductsComplaints,
} from './quality-aggregate'
import {
  buildDealerComplaintRatePer1000,
  buildDealerOpWrongRatePer1000,
  buildOpWrongDealerCounts,
  buildOpWrongHospitalTop,
  buildProductOpWrongSharePct,
  buildProvinceComplaintCounts,
  buildProvinceComplaintRatePer1000,
} from './marketing-aggregate'

export type InsightDimension = '合规' | '质量' | '营销' | '事件实质'

export interface InsightRow {
  dimension: InsightDimension
  pageTitle: string
  chartId: string
  chartTitle: string
  bullets: string[]
}

const PAGE_ORDER: { key: string; dimension: InsightDimension }[] = [
  { key: 'compliance-psur', dimension: '合规' },
  { key: 'compliance-audit', dimension: '合规' },
  { key: 'quality-concentration', dimension: '质量' },
  { key: 'quality-trends', dimension: '质量' },
  { key: 'quality-complaint-sales', dimension: '质量' },
  { key: 'quality-complaint-investigation', dimension: '质量' },
  { key: 'quality-complaint-batch', dimension: '质量' },
  { key: 'quality-ae-cause', dimension: '质量' },
  { key: 'quality-ae-only', dimension: '质量' },
  { key: 'quality-ae-with-complaint', dimension: '质量' },
  { key: 'marketing-operation-training', dimension: '营销' },
  { key: 'marketing-region-dealer', dimension: '营销' },
  { key: 'substance-matrix', dimension: '事件实质' },
  { key: 'substance-seasonality', dimension: '事件实质' },
]

function seriesPeak<T extends string | number>(labels: T[], values: number[], unit: string): string[] {
  if (!labels.length) return ['当前序列无有效数据点。']
  let maxI = 0
  let minI = 0
  for (let i = 1; i < values.length; i++) {
    if (values[i] > values[maxI]) maxI = i
    if (values[i] < values[minI]) minI = i
  }
  const sum = values.reduce((a, b) => a + b, 0)
  const avg = sum / values.length
  const bullets = [
    `统计范围内合计 ${sum}${unit}，覆盖 ${labels.length} 个序列点。`,
    `峰值出现在「${labels[maxI]}」（${values[maxI]}${unit}）；低谷为「${labels[minI]}」（${values[minI]}${unit}）。`,
  ]
  if (values[maxI] > avg * 1.25) bullets.push('峰值明显高于均值，建议结合下钻维度核查是否存在集中爆发或外部因素。')
  else bullets.push('波动相对温和，可继续跟踪后续周期是否突破历史区间。')
  return bullets
}

type Builder = (ctx: AnalysisContext) => string[]

const INSIGHTS: Record<string, Builder> = {
  'psur-monthly': (ctx) => {
    const t = buildAeMonthlyByOccurrence(ctx)
    return seriesPeak(t.months, t.values, ' 条 AE')
  },
  'psur-ppm': (ctx) => {
    const p = buildGlobalMonthlyPpm(ctx)
    const pairs = p.months.map((m, i) => ({ m, v: p.ppm[i] }))
    const valid = pairs.filter((x) => x.v != null) as { m: string; v: number }[]
    if (!valid.length) return ['多数月份缺少入院量分母，PPM 不可算；需检查入院数据覆盖。']
    const vals = valid.map((x) => x.v)
    const maxI = vals.indexOf(Math.max(...vals))
    return [
      `可计算 PPM 的月份共 ${valid.length} 个；最高 PPM 出现在 ${valid[maxI].m}（${valid[maxI].v}）。`,
      'PPM 同时受分子（AE 条数）与分母（CY Qty）波动影响，解读时需双因子对照。',
    ]
  },
  'psur-device-top': (ctx) => {
    const top = buildTopDeviceFailures(ctx, 10)
    if (!top.labels.length) return ['暂无器械故障字段数据。']
    return [
      `报告条数最多的器械故障表现为「${top.labels[0]}」（${top.values[0]} 条）。`,
      `Top3 合计约占当期可分类故障的显著份额，适合作为 PSUR「常见原因」叙述抓手。`,
    ]
  },
  'psur-product-top': (ctx) => {
    const t = buildPsurTopProducts(ctx)
    if (!t.labels.length) return ['暂无产品维度 AE。']
    return [`AE 条数最高的产品为「${t.labels[0]}」（${t.values[0]} 条）。`, '建议与投诉侧同产品趋势对照阅读，区分监管通道与市场通道信号。']
  },
  'psur-sae-monthly': (ctx) => {
    const s = buildSaeMonthlyByOccurrence(ctx)
    return seriesPeak(s.months, s.values, ' 条 SAE')
  },
  'psur-sae-share': (ctx) => {
    const s = buildSaeShareMonthly(ctx)
    const avg = s.shares.reduce((a, b) => a + b, 0) / s.shares.length
    const maxI = s.shares.indexOf(Math.max(...s.shares))
    return [
      `SAE 占全部 AE 比例月均约 ${avg.toFixed(1)}%。`,
      `占比峰值出现在 ${s.months[maxI]}（${s.shares[maxI]}%），需关注是否伴随总量上升（量率齐升）。`,
    ]
  },
  'psur-province': (ctx) => {
    const p = buildProvinceAeCounts(ctx)
    if (!p.labels.length) return ['暂无省级 AE 分布。']
    return [
      `AE 报告条数最多的省份为「${p.labels[0]}」（${p.values[0]} 条）。`,
      '省级绝对量需结合人口与装机/入院暴露进一步做率化，再判「热区」。',
    ]
  },
  'psur-lag-histogram': (ctx) => {
    const lags = buildReportingLagDays(ctx).filter((d) => d >= 0)
    if (!lags.length) return ['缺少可计算的滞后天数（审核日或登记日为空）。']
    const mean = lags.reduce((a, b) => a + b, 0) / lags.length
    const ok = lags.filter((d) => d <= 15).length
    return [
      `有效样本 ${lags.length} 条，上报滞后（审核−登记）均值约 ${mean.toFixed(1)} 天。`,
      `其中 ≤15 天约占 ${((ok / lags.length) * 100).toFixed(1)}%（演示阈值）。`,
    ]
  },
  'audit-summary-bar': (ctx) => {
    const m = buildComplianceMatching(ctx)
    return [
      `应报样本（投诉标记不良事件）共 ${m.flaggedTotal} 条，疑似漏报率 ${m.leakRate}%，匹配率 ${m.matchRate}%。`,
      `匹配子集上，按登记与按 C3 起算的 ≤15 天占比分别为 ${m.timelinessFromRegistrationPct}% 与 ${m.timelinessFromC3Pct}%。`,
    ]
  },
  'audit-counts-pie': (ctx) => {
    const m = buildComplianceMatching(ctx)
    return [`已匹配 ${m.matched} 条，疑似漏报 ${m.missed} 条。`, '饼图结构用于审计抽样框说明；漏报清单需进入逐条调查闭环。']
  },
  'quality-pareto-chart': (ctx) => {
    const p = buildComplaintPareto(ctx)
    if (!p.labels.length) return ['暂无产品×故障组合数据。']
    return [
      `贡献最大的组合为「${p.labels[0]}」（${p.bars[0]} 条投诉）。`,
      `Top 组合累计占比曲线末点约 ${p.line[p.line.length - 1]}%，可据此划定「80% 投诉池」优先改进范围。`,
    ]
  },
  'quality-batch-chart': (ctx) => {
    const b = buildComplaintBatchTop(ctx, 8)
    if (!b.labels.length) return ['暂无批号信息。']
    return [`投诉集中度最高的批号为「${b.labels[0]}」（${b.values[0]} 条）。`, '建议对 Top 批号启动批次质量回溯并与 AE 批号对照。']
  },
  'quality-hospital-top': (ctx) => {
    const t = buildTopHospitalsComplaints(ctx, 8)
    return [`投诉条数最多的医院为「${t.labels[0]}」（${t.values[0]} 条）。`, '医院端集中可与培训、跟台及备件策略联动。']
  },
  'quality-product-fault-top': (ctx) => {
    const t = buildTopFaultTypes(ctx, 8)
    return [`频次最高的故障类型为「${t.labels[0]}」（${t.values[0]} 次）。`, '一维故障分布可与 Pareto 组合图交叉验证。']
  },
  'trend-monthly': (ctx) => {
    const t = buildComplaintMonthly(ctx)
    return seriesPeak(t.months, t.values, ' 条投诉')
  },
  'trend-product-half': (ctx) => {
    const g = buildProductComplaintHalfYearGrowth(ctx)
    return [
      `按上下半年对比，满足「增速≥20%」预警规则的产品共 ${g.length} 个（演示规则）。`,
      g.length ? `预警列表首项产品为「${g[0].product}」，建议结合 Pareto 与批号视图复核。` : '当前样本未触发产品增速预警，可结合更长窗口观察。',
    ]
  },
  'trend-product-alert': (ctx) => {
    const g = buildProductComplaintHalfYearGrowth(ctx)
    return [
      g.length
        ? `预警列表首位产品为「${g[0].product}」，建议优先安排工程/质量联合复盘。`
        : '未识别到达阈的增速异常产品（或样本不足）。',
    ]
  },
  'trend-province-half': (ctx) => {
    const rows = buildProvinceComplaintHalfYearGrowth(ctx)
    const hit = rows.filter((r) => r.hit)
    return [
      `共统计 ${rows.length} 个省份上下半年投诉量。`,
      hit.length ? `其中 ${hit.length} 个省下半年相对上半年增幅≥20%，需关注区域侧原因。` : '未识别省级增速达阈信号。',
    ]
  },
  'qc-sales-scatter': (ctx) => {
    const pts = buildHospitalComplaintVsAdmissionQty(ctx)
    const hi = [...pts].sort((a, b) => b.complaints - a.complaints)[0]
    return [
      `共 ${pts.length} 家医院同时具有投诉与入院量数据。`,
      hi ? `投诉条数最多的是「${hi.hospital}」（${hi.complaints} 条，cyQty 汇总 ${hi.cyQty}）。` : '',
      '散点偏离带可提示「相对入院量投诉偏多」的医院，需结合床位与产品结构复核。',
    ].filter(Boolean)
  },
  'qc-sales-rate': (ctx) => {
    const rows = buildHospitalProductComplaintRate(ctx)
    const top = rows[0]
    if (!top) return ['暂无医院×产品投诉率数据。']
    return [
      `医院×产品维度投诉率（件/千件）最高为「${top.hospital} / ${top.product}」（${top.ratePer1000}）。`,
      '率化结果对入院量分母敏感，脚注需固定为 CY Qty 与对齐键版本。',
    ]
  },
  'qc-inv-pie': (ctx) => {
    const d = buildInvestigationConclusionDist(ctx)
    const top = d[0]
    return top ? [`调查结论占比最高为「${top[0]}」（${top[1]} 条）。`, '结构变化适合按季度监控，识别「产品缺陷成立」是否抬升。'] : ['暂无调查结论数据。']
  },
  'qc-defect-bar': (ctx) => {
    const d = buildDefectConfirmedProductFault(ctx)
    return d.labels.length
      ? [`「产品缺陷成立」场景下，最高频组合为「${d.labels[0]}」（${d.values[0]} 条）。`, '该池子应进入 CAPA/设计变更输入优先级队列。']
      : ['暂无产品缺陷成立记录。']
  },
  'qc-comp-pie': (ctx) => {
    const d = buildCompensationDist(ctx)
    const top = d[0]
    return top ? [`赔付方式占比最高为「${top[0]}」（${top[1]} 次）。`, '可与缺陷成立子集交叉，观察质量失败外显成本结构。'] : ['暂无赔付数据。']
  },
  'qc-product-top': (ctx) => {
    const t = buildTopProductsComplaints(ctx, 8)
    return [`投诉条数最多的产品为「${t.labels[0]}」（${t.values[0]} 条）。`, '与调查/赔付饼图联读可快速定位「问题产品」。']
  },
  'qc-batch-ae': (ctx) => {
    const rows = buildBatchComplaintVsAeCounts(ctx).filter((r) => r.complaints + r.aeReports > 0)
    if (!rows.length) return ['暂无可对照的批号双通道数据。']
    const top = [...rows].sort((a, b) => b.complaints + b.aeReports - (a.complaints + a.aeReports))[0]
    return [
      `批号「${top.batchNo}」投诉 ${top.complaints} 条、AE ${top.aeReports} 条，合计通道压力最大（演示口径）。`,
      '双通道同升批号应优先纳入监管沟通与质量联合调查。',
    ]
  },
  'qc-close-cycle': (ctx) => {
    const days = buildComplaintCloseCycleDays(ctx)
    if (!days.length) return ['缺少关闭日期或登记日期，无法计算周期。']
    const mean = days.reduce((a, b) => a + b, 0) / days.length
    return [`投诉关闭周期（关闭−登记）均值约 ${mean.toFixed(1)} 天。`, '分布右尾偏长通常与补件、调查反复或跨部门协同有关。']
  },
  'ae-scatter-hosp': (ctx) => {
    const pts = buildHospitalAeVsAdmissionScatter(ctx)
    const hi = [...pts].sort((a, b) => b.aeCount - a.aeCount)[0]
    return [
      `共 ${pts.length} 家医院具备 AE 与入院量对照数据。`,
      hi ? `AE 条数最多的是「${hi.hospital}」（${hi.aeCount} 条）。` : '',
      '该图为报告行为异常筛查视角，不等同于医院医疗质量差。',
    ].filter(Boolean)
  },
  'ae-upgrade-rate': (ctx) => {
    const rows = buildIsAeRateByProduct(ctx)
    const top = [...rows].sort((a, b) => b.ratePct - a.ratePct)[0]
    return top
      ? [`升级率（是否不良事件=是）最高的产品为「${top.product}」（${top.ratePct}%）。`, '跨 BU 对比可反映上报文化与流程差异。']
      : ['暂无升级率数据。']
  },
  'ae-only-failure': (ctx) => {
    const top = buildTopDeviceFailures(ctx, 8)
    return [`未并发投诉的 AE 中，器械故障 Top1 为「${top.labels[0]}」。`, '用于理解「仅监管通道」事件形态。']
  },
  'ae-only-monthly': (ctx) => {
    const t = buildAeMonthlyByOccurrence(ctx)
    return [`AE 仅报告维度下，月度峰值仍在「${t.months[t.values.indexOf(Math.max(...t.values))]}」。`, '与投诉月度曲线对照时注意双时间轴。']
  },
  'ae-with-fault': (ctx) => {
    const sub = ctx.complaints.filter((c) => c.isAe)
    const m = new Map<string, number>()
    sub.forEach((c) => m.set(c.faultType, (m.get(c.faultType) ?? 0) + 1))
    const sorted = [...m.entries()].sort((a, b) => b[1] - a[1])
    return sorted.length
      ? [`已升级投诉中最高频故障为「${sorted[0][0]}」。`, '可与 AE 伤害×故障矩阵叙事衔接。']
      : ['暂无已升级投诉。']
  },
  'ae-with-monthly': (ctx) => {
    const sub = ctx.complaints.filter((c) => c.isAe)
    return [`当前样本中已升级投诉共 ${sub.length} 条。`, '登记月趋势用于观察升级投诉是否与活动期/政策窗口重叠。']
  },
  'mkt-op-hospital': (ctx) => {
    const d = buildOpWrongHospitalTop(ctx, 14)
    return d.labels.length
      ? [`操作不当投诉最多的医院为「${d.labels[0]}」（${d.values[0]} 条）。`, '适合作为院内操作培训与跟台加强的优先名单。']
      : ['无操作不当子集样本。']
  },
  'mkt-op-dealer-count': (ctx) => {
    const d = buildOpWrongDealerCounts(ctx, 14)
    return d.labels.length
      ? [`操作不当投诉条数最多的经销商为「${d.labels[0]}」（${d.values[0]} 条）。`, '渠道侧可安排联合巡院与标准操作复核。']
      : ['无操作不当子集样本。']
  },
  'mkt-op-dealer-rate': (ctx) => {
    const d = buildDealerOpWrongRatePer1000(ctx, 14)
    return d.labels.length
      ? [`操作不当率（件/千件）最高的经销商为「${d.labels[0]}」（${d.values[0]}）。`, '率化结果提示相对销量下的使用风险，不等于经销商储运问题。']
      : ['无法计算经销商操作不当率（分母或分子不足）。']
  },
  'mkt-op-product-share': (ctx) => {
    const d = buildProductOpWrongSharePct(ctx, 12)
    return d.labels.length
      ? [`操作不当占该产品全部投诉比例最高为「${d.labels[0]}」（${d.values[0]}%）。`, '说明书与数字化指导素材可优先迭代该产品。']
      : ['无操作不当占比数据。']
  },
  'mkt-rg-province-rate': (ctx) => {
    const d = buildProvinceComplaintRatePer1000(ctx, 16)
    return d.labels.length
      ? [`省级投诉率（件/千件）最高为「${d.labels[0]}」（${d.values[0]}）。`, '需与绝对量图对照，避免大省误判。']
      : ['暂无省级投诉率数据。']
  },
  'mkt-rg-dealer-rate': (ctx) => {
    const d = buildDealerComplaintRatePer1000(ctx, 16)
    return d.labels.length
      ? [`经销商维度投诉率（件/千件）最高为「${d.labels[0]}」（${d.values[0]}）。`, '可作为渠道辅导与考核的量化参考之一。']
      : ['暂无经销商投诉率数据。']
  },
  'mkt-rg-province-count': (ctx) => {
    const d = buildProvinceComplaintCounts(ctx, 14)
    return d.labels.length
      ? [`省级投诉绝对量最高为「${d.labels[0]}」（${d.values[0]} 条）。`, '与省级率图并列阅读，区分总量大与相对率高。']
      : ['暂无省级投诉分布。']
  },
  'matrix-all': (ctx) => {
    const { cells } = buildInjuryDeviceMatrix(ctx, false)
    if (!cells.length) return ['暂无伤害×故障交叉数据。']
    const top = [...cells].sort((a, b) => b.value - a.value)[0]
    return [
      `全量 AE 下最高频组合为「${top.injury} × ${top.device}」（${top.value} 条）。`,
      '热力图用于 CAPA 优先级与医学叙述，不等同因果结论。',
    ]
  },
  'matrix-sae': (ctx) => {
    const rows = ctx.ae.filter((r) => isSaeRecord(r))
    const { cells } = buildInjuryDeviceMatrix(ctx, true)
    if (!cells.length) return ['SAE 子集下暂无有效组合。']
    const top = [...cells].sort((a, b) => b.value - a.value)[0]
    return [
      `当前 SAE 子集共 ${rows.length} 条；最高频伤害-故障组合为「${top.injury} × ${top.device}」。`,
      '建议与严重医学评审及对外沟通材料要点对齐。',
    ]
  },
  'seasonality-heatmap': (ctx) => {
    const { cells } = buildFaultByRegisterMonthMatrix(ctx)
    if (!cells.length) return ['暂无故障×月份数据。']
    const top = [...cells].sort((a, b) => b.value - a.value)[0]
    return [
      `投诉侧「故障×登记月」强度最高单元为「${top.fault} / ${top.month}」（${top.value} 条）。`,
      '探索性结论需结合气候/医院排班等外部变量再验证。',
    ]
  },
  'seasonality-monthly-total': (ctx) => {
    const t = buildComplaintMonthly(ctx)
    const maxI = t.values.indexOf(Math.max(...t.values))
    return [`投诉总量峰值月份为 ${t.months[maxI]}（${t.values[maxI]} 条）。`, '与热力图行合计应对齐，用于读整体季节性背景。']
  },
}

export function buildComprehensiveInsightRows(context: AnalysisContext): InsightRow[] {
  const rows: InsightRow[] = []
  for (const { key, dimension } of PAGE_ORDER) {
    const def = getAnalysisDefinition(key)
    if (!def) continue
    for (const sec of def.sections) {
      for (const chart of sec.charts) {
        if (chart.placeholder) continue
        if (!chart.optionBuilder) continue
        const builder = INSIGHTS[chart.id]
        const bullets = builder ? builder(context) : ['该图表已接入数据视图；结论规则尚未注册，可在 comprehensive-insights.ts 中补充。']
        rows.push({
          dimension,
          pageTitle: def.title,
          chartId: chart.id,
          chartTitle: chart.title,
          bullets,
        })
      }
    }
  }
  return rows
}

export function groupInsightsByDimension(rows: InsightRow[]): Record<InsightDimension, InsightRow[]> {
  const init: Record<InsightDimension, InsightRow[]> = { 合规: [], 质量: [], 营销: [], 事件实质: [] }
  for (const r of rows) init[r.dimension].push(r)
  return init
}