#!/usr/bin/env bun
import { existsSync, mkdirSync, readFileSync, writeFileSync } from 'fs'
import { dirname, join } from 'path'

const root = process.cwd()
const intelRoot = join(root, 'data', 'intelligence')
const outRoot = join(root, 'content_population_exports')
const generatedAt = new Date().toISOString()

function readJson(path: string, fallback: any = null) {
  if (!existsSync(path)) return fallback
  return JSON.parse(readFileSync(path, 'utf8').replace(/^\uFEFF/, ''))
}
function writeJson(path: string, data: any) {
  mkdirSync(dirname(path), { recursive: true })
  writeFileSync(path, JSON.stringify(data, null, 2) + '\n', 'utf8')
}

const apifyRaw = readJson(join(root, 'data', 'sources', 'apify', 'raw', 'top3-market-competitor-capped-apify.json'), {})
const apifyItems = Array.isArray(apifyRaw.items) ? apifyRaw.items : (Array.isArray(apifyRaw.items?.value) ? apifyRaw.items.value : [])
const bySku = new Map(apifyItems.map((item: any) => [item.sku, item]))
function sourceSkuAliases(sku: string) {
  return sku === 'JV-DEFF1000' ? ['JV-DEFF1000', 'JV-D1000'] : [sku]
}

const top3 = [
  {
    sku: 'JV-TURMERIC500',
    name: 'Turmeric with BioPerine (Black Pepper Extract)',
    competitor: {
      brand: 'Feel',
      source: 'Apify capped scrape',
      url: 'https://wearefeel.com/en-us/products/feel-pro-turmeric',
      fallbackUsed: false,
      signals: [
        'Pro Turmeric leads with an outcome-led joint/mobility promise and a strong science wrapper.',
        'The offer foregrounds 29 clinical studies, 100x higher bioavailability, 1 patented ingredient and a 31% improvement proof point.',
        'The PDP sells subscription flexibility hard: discounted subscription, cancellation in two clicks, gifts/rewards and timeline milestones.',
        'The formula uses Longvida Optimised Curcumin plus Boswellia, Bamboo, Quercetin, Ginger, Rosehip, Vitamin C and Vitamin D.'
      ],
      whitespace: [
        'Just Vitamins can win on simpler product truth: 95% curcuminoids and guaranteed 475mg curcuminoids per tablet.',
        'Avoid copying disease/pain language; use strength, transparency and expectation-setting instead.',
        'Add a clear comparison panel: headline mg vs actual curcuminoids vs BioPerine absorption support.'
      ]
    },
    offer: 'Lead with potency transparency: 95% curcuminoids, 475mg curcuminoids per tablet and BioPerine, then set realistic routine expectations.',
    pdpDecisions: [
      'Hero should answer “what makes this turmeric strong/trustworthy?” rather than generic joint relief.',
      'Comparison asset should show actual curcuminoids per tablet, not only 12,500mg headline turmeric.',
      'FAQ should handle time-to-judge, no-effect minority and broken-tablet/replacement reassurance.',
      'Do not use competitor-style anti-inflammatory or pain-relief promises without compliance approval.'
    ]
  },
  {
    sku: 'JV-DEFF1000',
    name: 'Vitamin D Effervescent Tablets - 1000iu',
    competitor: {
      brand: 'Vitabiotics Immunace Fizz',
      source: 'Apify capped scrape',
      url: 'https://www.vitabiotics.com/collections/all-vitabiotics-products/products/immunace-fizz-effervescent-tablets',
      fallbackUsed: false,
      signals: [
        'Immunace Fizz leads with convenient, great-tasting effervescent orange drink format for people who dislike swallowing tablets.',
        'The PDP positions 1000IU Vitamin D inside a broader 12-nutrient immune/vitality formula with Vitamin C, Zinc and Selenium.',
        'The offer uses 3-for-2 and subscribe-and-save mechanics alongside free UK delivery.',
        'The brand proof angle is “from the UK’s No.1 vitamin company”.'
      ],
      whitespace: [
        'Just Vitamins must make the drink format visually obvious: peach/passion fruit, one tablet in 200ml water.',
        'Because the SKU is single-ingredient Vitamin D3, compete on simplicity and daily maintenance rather than broad multinutrient complexity.',
        'Exclude swallow-tablet Amazon/category language from this PDP.'
      ]
    },
    offer: 'Make the format the offer: a simple daily Vitamin D3 drink for low-sun routines, not another capsule/tablet.',
    pdpDecisions: [
      'Hero image/copy should show the tablet dissolving in water and name the peach/passion fruit flavour.',
      'FAQ should explain this is for daily maintenance/support and not a treatment for diagnosed deficiency.',
      'Offer module should compare “drink format” against capsules/tablets, not claim superiority over medical dosing.',
      'Out-of-stock or availability status needs owner confirmation before final export.'
    ]
  },
  {
    sku: 'JV-VISISOFT',
    name: 'Visisoft Original Tablets - 10mg',
    competitor: {
      brand: 'Healthspan OptiVision',
      source: 'Public web evidence; Apify Healthspan request returned no dataset item under cap',
      url: 'https://www.healthspan.co.uk/optivision/',
      fallbackUsed: true,
      signals: [
        'OptiVision leads with an advanced eye-health complex, lutein and zeaxanthin, omega 3 and “maintains normal vision” wording.',
        'The competitor stacks 20mg lutein, 2000mcg zeaxanthin, vegan omega 3 with 250mg DHA and Vitamin A normal-vision support.',
        'The offer uses subscribe-and-save, first-order discounting and free UK delivery thresholds.',
        'Customer proof language references optometrist/eye-health outcomes, which must be treated carefully as review language, not a treatment claim.'
      ],
      whitespace: [
        'Just Vitamins should clarify Original 10mg: Lutein 10mg, Zeaxanthin 400mcg, Bilberry, Grape Seed and Vitamin A.',
        'Use authorised Vitamin A normal-vision wording only; do not imply AMD, cataract or glaucoma treatment.',
        'A comparison asset should show Original vs richer competitor stacks honestly, then position JV on simplicity/value/routine fit.'
      ]
    },
    offer: 'Make ingredient-stack clarity the offer: Original 10mg lutein plus zeaxanthin, bilberry, grape seed and authorised Vitamin A normal-vision support.',
    pdpDecisions: [
      'Hero should be routine/normal-vision support, not medical improvement.',
      'Comparison should clearly distinguish Original 10mg from Ultra/advanced competitor stacks.',
      'FAQ should say effects are hard to prove and eye-health routines should be discussed with an optician/clinician where relevant.',
      'Use optician/consultant language only as audience context, not as proof of efficacy.'
    ]
  }
]

const summaryRows: any[] = []
for (const item of top3) {
  const amazon = readJson(join(intelRoot, item.sku, 'amazon-reviews.json'), {})
  const reddit = readJson(join(intelRoot, item.sku, 'reddit-pulse.json'), {})
  const publicEvidence = readJson(join(intelRoot, item.sku, 'public-internet-evidence.json'), {})
  const apifyItem = sourceSkuAliases(item.sku).map(alias => bySku.get(alias)).find(Boolean) as any
  const competitor = {
    ...item.competitor,
    apifyCaptured: Boolean(apifyItem),
    apifyTitle: apifyItem?.title || null,
    apifyRunId: apifyRaw.runId || null,
    apifyDatasetId: apifyRaw.datasetId || null,
    apifyRequestCap: apifyRaw.requestCap || null
  }
  const synthesis = {
    sku: item.sku,
    name: item.name,
    generatedAt,
    generatedBy: 'synthesize-top3-market-insights.ts',
    sourceCoverage: {
      officialPdpFacts: publicEvidence.facts?.length || 0,
      publicReviewSignals: publicEvidence.reviewSignals?.length || 0,
      amazonSignals: amazon.themes?.length || 0,
      redditSignals: reddit.pulses?.length || 0,
      competitorSignals: competitor.signals.length,
      apifyCaptured: competitor.apifyCaptured,
      apifyFallbackUsed: competitor.fallbackUsed
    },
    offer: item.offer,
    competitor,
    synthesis: {
      customerObjections: (reddit.pulses || []).slice(0, 4).map((row: any) => row.topic || row.theme),
      marketplacePressure: (amazon.themes || []).slice(0, 4).map((row: any) => row.theme),
      pdpDecisions: item.pdpDecisions,
      contentGuardrails: [
        ...(publicEvidence.contaminationExclusions || []),
        ...(amazon.themes || []).filter((row: any) => /guardrail|contamination|not confirmed/i.test(`${row.status} ${row.theme}`)).map((row: any) => row.contentUse || row.evidence),
        'Final copy still requires human content and compliance approval.'
      ]
    }
  }
  writeJson(join(intelRoot, item.sku, 'market-insight-synthesis.json'), synthesis)
  writeJson(join(intelRoot, item.sku, 'competitor-comparison.json'), {
    sku: item.sku,
    name: item.name,
    generatedAt,
    generatedBy: 'synthesize-top3-market-insights.ts',
    coverage: competitor.apifyCaptured ? 'apify_capped_competitor_pdp_plus_market_context' : 'public_competitor_context_apify_no_item',
    sourceStatus: {
      apify: competitor.apifyCaptured ? 'captured_under_request_cap' : 'attempted_under_request_cap_no_dataset_item',
      amazon: amazon.coverage || 'missing',
      reddit: reddit.coverage || 'missing'
    },
    competitors: [
      {
        rank: 1,
        brand: competitor.brand,
        domain: new URL(competitor.url).hostname,
        sourceCoverage: competitor.source,
        whitespace: competitor.whitespace.join(' '),
        status: competitor.apifyCaptured ? 'captured' : 'fallback_public_web_context',
        url: competitor.url,
        signals: competitor.signals
      }
    ],
    comparison: competitor.signals.map((signal: string, index: number) => ({
      rank: index + 1,
      attribute: `${competitor.brand} signal ${index + 1}`,
      justVitamins: item.pdpDecisions[index] || item.offer,
      competitorEvidence: signal,
      recommendation: competitor.whitespace[index % competitor.whitespace.length]
    })),
    jvSignals: item.pdpDecisions.map((decision: string, index: number) => ({ rank: index + 1, signal: decision, source: 'market-insight-synthesis' }))
  })
  summaryRows.push({
    sku: item.sku,
    product: item.name,
    offer: item.offer,
    competitor: competitor.brand,
    apifyCaptured: competitor.apifyCaptured,
    amazonSignals: amazon.themes?.length || 0,
    redditSignals: reddit.pulses?.length || 0,
    output: `data/intelligence/${item.sku}/market-insight-synthesis.json`
  })
}

writeJson(join(outRoot, 'top3_market_insight_synthesis.json'), {
  generatedAt,
  ready: true,
  apifyRun: {
    rawPath: 'data/sources/apify/raw/top3-market-competitor-capped-apify.json',
    status: apifyRaw.status,
    statusMessage: apifyRaw.statusMessage,
    requestCap: apifyRaw.requestCap,
    itemCount: apifyRaw.itemCount,
    computeUnits: apifyRaw.stats?.computeUnits
  },
  counts: {
    products: top3.length,
    marketInsightFiles: top3.length,
    competitorComparisonFiles: top3.length
  },
  products: summaryRows
})

console.log(`Top 3 market insight synthesis ready: ${top3.length}`)
console.log(`Apify captured items: ${summaryRows.filter(row => row.apifyCaptured).length}/${top3.length}`)